{ "title": "Statistics on Windows Server Versions in Use, End-of-Life Dates, and What Happens Next: statistics dataset", "slug": "windows-server-end-of-life-statistics", "version": "1.0", "last_source_check": "2026-10-14", "publisher": "Zinstall", "permalink_base": "https://www.zinstall.com/research/windows-server-end-of-life-statistics", "methodology": null, "record_count": 596, "source_count": 313, "records": [ { "id": "spiceworks-2015-03-server-2003-at-least-one-instance-61pct", "family": "eol-history-2003-2008", "statement": "61% of companies in the Spiceworks network had at least one instance of Windows Server 2003 running in January 2015, six months before its 14 July 2015 end of support (Spiceworks, 2015).", "short_statement": "Six months before the deadline, in January 2015, the share was **61%**.", "short_refs": null, "value": 61, "unit": "% of companies in the Spiceworks network (at least one Windows Server 2003 instance)", "display_value": "61%", "display_label": "Companies in the Spiceworks network, January 2015 (Spiceworks)", "display_hook": null, "row_label": "January 2015", "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Companies in the Spiceworks network (the release does not say whether this share comes from network inventory data or from the 1,300+ survey respondents)", "sample_n": null, "publisher": "Spiceworks", "source_title": "Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)", "source_url": "http://www.spiceworks.com/press/releases/2015-03-18/2", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "Sixty-one percent of companies in the Spiceworks network have at least one instance of Windows Server 2003 running within their environment, representing millions of installations across both physical and virtualized infrastructures.", "locator": "Second paragraph. Snapshot: https://web.archive.org/web/20150518043350/http://www.spiceworks.com:80/press/releases/2015-03-18/2", "derived": false, "formula": null, "headline": false, "series": "eol-deadline-share-still-running-organisations", "history": [], "notes": "Spiceworks' own release, recovered from the Wayback Machine (the page is gone from spiceworks.com); page 2 cited eWeek's 23 March 2015 report of the same figures. Vendor-run survey sponsored by SanDisk (labelled manufacturer). Measured in January 2015, six months before the 14 July 2015 deadline; published 18 March 2015, four months before. The 61% describes 'companies in the Spiceworks network', a wider base than the survey sample (which only included people who still ran or had recently migrated Server 2003). Later points of the same measure: 60% in September 2015, 53% in June 2016. The Register reported a different Spiceworks poll in May 2015 with 57% (not re-fetched).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-at-least-one-instance-61pct", "citation_text": "61% of companies in the Spiceworks network had at least one instance of Windows Server 2003 running in January 2015, six months before its 14 July 2015 end of support (Spiceworks, 2015). Source: Spiceworks, \"Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)\" (http://www.spiceworks.com/press/releases/2015-03-18/2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-at-least-one-instance-61pct." }, { "id": "spiceworks-2015-03-server-2003-fully-migrated-15pct", "family": "eol-history-2003-2008", "statement": "15% of respondents had fully migrated off Windows Server 2003 by January 2015, six months before its July 2015 end of support, in Spiceworks' survey of over 1,300 IT professionals who still ran it or had recently migrated (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 15, "unit": "% of survey respondents", "display_value": "15%", "display_label": "", "display_hook": null, "row_label": "Fully migrated", "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Over 1,300 IT professionals in the Spiceworks network in North America, EMEA and APAC who had migrated a Windows Server 2003 server in the past year or still ran one, surveyed in January 2015 (study sponsored by SanDisk)", "sample_n": 1300, "publisher": "Spiceworks", "source_title": "Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)", "source_url": "http://www.spiceworks.com/press/releases/2015-03-18/2", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "Fifteen percent of respondents have fully migrated their environment while 48 percent have partially migrated and 28 percent remain in the planning stages.", "locator": "Third paragraph ('The survey found a majority...'). Snapshot: https://web.archive.org/web/20150518043350/http://www.spiceworks.com:80/press/releases/2015-03-18/2", "derived": false, "formula": null, "headline": false, "series": "spiceworks-2015-server-2003-migration-stage", "history": [], "notes": "Spiceworks' own release, recovered from the Wayback Machine (the page is gone from spiceworks.com); page 2 cited eWeek's 23 March 2015 report of the same figures. Vendor-run survey sponsored by SanDisk (labelled manufacturer). Measured in January 2015, six months before the 14 July 2015 deadline; published 18 March 2015, four months before. Migration-stage split: 15% fully, 48% partially, 28% planning, 8% no plans.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-fully-migrated-15pct", "citation_text": "15% of respondents had fully migrated off Windows Server 2003 by January 2015, six months before its July 2015 end of support, in Spiceworks' survey of over 1,300 IT professionals who still ran it or had recently migrated (Spiceworks, 2015). Source: Spiceworks, \"Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)\" (http://www.spiceworks.com/press/releases/2015-03-18/2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-fully-migrated-15pct." }, { "id": "spiceworks-2015-03-server-2003-partially-migrated-48pct", "family": "eol-history-2003-2008", "statement": "48% of respondents had only partially migrated off Windows Server 2003 by January 2015, six months before its July 2015 end of support, in Spiceworks' survey of over 1,300 IT professionals (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 48, "unit": "% of survey respondents", "display_value": "48%", "display_label": "", "display_hook": null, "row_label": "Partially migrated", "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Over 1,300 IT professionals in the Spiceworks network in North America, EMEA and APAC who had migrated a Windows Server 2003 server in the past year or still ran one, surveyed in January 2015 (study sponsored by SanDisk)", "sample_n": 1300, "publisher": "Spiceworks", "source_title": "Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)", "source_url": "http://www.spiceworks.com/press/releases/2015-03-18/2", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "Fifteen percent of respondents have fully migrated their environment while 48 percent have partially migrated and 28 percent remain in the planning stages.", "locator": "Third paragraph. Snapshot: https://web.archive.org/web/20150518043350/http://www.spiceworks.com:80/press/releases/2015-03-18/2", "derived": false, "formula": null, "headline": false, "series": "spiceworks-2015-server-2003-migration-stage", "history": [], "notes": "Spiceworks' own release, recovered from the Wayback Machine (the page is gone from spiceworks.com); page 2 cited eWeek's 23 March 2015 report of the same figures. Vendor-run survey sponsored by SanDisk (labelled manufacturer). Measured in January 2015, six months before the 14 July 2015 deadline; published 18 March 2015, four months before.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-partially-migrated-48pct", "citation_text": "48% of respondents had only partially migrated off Windows Server 2003 by January 2015, six months before its July 2015 end of support, in Spiceworks' survey of over 1,300 IT professionals (Spiceworks, 2015). Source: Spiceworks, \"Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)\" (http://www.spiceworks.com/press/releases/2015-03-18/2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-partially-migrated-48pct." }, { "id": "spiceworks-2015-03-server-2003-still-planning-28pct", "family": "eol-history-2003-2008", "statement": "28% of respondents were still at the planning stage of their Windows Server 2003 migration in January 2015, six months before its July 2015 end of support, in Spiceworks' survey of over 1,300 IT professionals (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 28, "unit": "% of survey respondents", "display_value": "28%", "display_label": "", "display_hook": null, "row_label": "Still planning", "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Over 1,300 IT professionals in the Spiceworks network in North America, EMEA and APAC who had migrated a Windows Server 2003 server in the past year or still ran one, surveyed in January 2015 (study sponsored by SanDisk)", "sample_n": 1300, "publisher": "Spiceworks", "source_title": "Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)", "source_url": "http://www.spiceworks.com/press/releases/2015-03-18/2", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "Fifteen percent of respondents have fully migrated their environment while 48 percent have partially migrated and 28 percent remain in the planning stages.", "locator": "Third paragraph. Snapshot: https://web.archive.org/web/20150518043350/http://www.spiceworks.com:80/press/releases/2015-03-18/2", "derived": false, "formula": null, "headline": false, "series": "spiceworks-2015-server-2003-migration-stage", "history": [], "notes": "Spiceworks' own release, recovered from the Wayback Machine (the page is gone from spiceworks.com); page 2 cited eWeek's 23 March 2015 report of the same figures. Vendor-run survey sponsored by SanDisk (labelled manufacturer). Measured in January 2015, six months before the 14 July 2015 deadline; published 18 March 2015, four months before.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-still-planning-28pct", "citation_text": "28% of respondents were still at the planning stage of their Windows Server 2003 migration in January 2015, six months before its July 2015 end of support, in Spiceworks' survey of over 1,300 IT professionals (Spiceworks, 2015). Source: Spiceworks, \"Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)\" (http://www.spiceworks.com/press/releases/2015-03-18/2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-still-planning-28pct." }, { "id": "spiceworks-2015-03-server-2003-no-plans-to-migrate-8pct", "family": "eol-history-2003-2008", "statement": "8% of IT professionals had no plans at all to migrate off Windows Server 2003 in January 2015, six months before its July 2015 end of support, in Spiceworks' survey of over 1,300 IT professionals (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 8, "unit": "% of survey respondents", "display_value": "8%", "display_label": "", "display_hook": null, "row_label": "No plans to migrate", "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Over 1,300 IT professionals in the Spiceworks network in North America, EMEA and APAC who had migrated a Windows Server 2003 server in the past year or still ran one, surveyed in January 2015 (study sponsored by SanDisk)", "sample_n": 1300, "publisher": "Spiceworks", "source_title": "Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)", "source_url": "http://www.spiceworks.com/press/releases/2015-03-18/2", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "Eight percent of IT professionals have no plans to migrate at all.", "locator": "Third paragraph. Snapshot: https://web.archive.org/web/20150518043350/http://www.spiceworks.com:80/press/releases/2015-03-18/2", "derived": false, "formula": null, "headline": false, "series": "spiceworks-2015-server-2003-migration-stage", "history": [], "notes": "Spiceworks' own release, recovered from the Wayback Machine (the page is gone from spiceworks.com); page 2 cited eWeek's 23 March 2015 report of the same figures. Vendor-run survey sponsored by SanDisk (labelled manufacturer). Measured in January 2015, six months before the 14 July 2015 deadline; published 18 March 2015, four months before.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-no-plans-to-migrate-8pct", "citation_text": "8% of IT professionals had no plans at all to migrate off Windows Server 2003 in January 2015, six months before its July 2015 end of support, in Spiceworks' survey of over 1,300 IT professionals (Spiceworks, 2015). Source: Spiceworks, \"Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)\" (http://www.spiceworks.com/press/releases/2015-03-18/2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-no-plans-to-migrate-8pct." }, { "id": "spiceworks-2015-03-server-2003-keepers-cite-software-compatibility-72pct", "family": "eol-history-2003-2008", "statement": "72% of respondents who planned to keep Windows Server 2003 after its July 2015 end of support cited software compatibility concerns, after security vulnerability (85%) and before compliance risk (66%), in Spiceworks' January 2015 survey (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 72, "unit": "% of respondents planning to keep Windows Server 2003 after end of support", "display_value": "72%", "display_label": "", "display_hook": null, "row_label": "Those keeping it: citing software compatibility", "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Over 1,300 IT professionals in the Spiceworks network in North America, EMEA and APAC who had migrated a Windows Server 2003 server in the past year or still ran one, surveyed in January 2015 (study sponsored by SanDisk)", "sample_n": null, "publisher": "Spiceworks", "source_title": "Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)", "source_url": "http://www.spiceworks.com/press/releases/2015-03-18/2", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "Of those who plan to keep Windows Server 2003 after end of life, 85 percent cited concerns with security vulnerability, 72 percent were concerned with software compatibility, and 66 percent cited concerns with compliance risks.", "locator": "Third paragraph. Snapshot: https://web.archive.org/web/20150518043350/http://www.spiceworks.com:80/press/releases/2015-03-18/2", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Spiceworks' own release, recovered from the Wayback Machine (the page is gone from spiceworks.com); page 2 cited eWeek's 23 March 2015 report of the same figures. Vendor-run survey sponsored by SanDisk (labelled manufacturer). Measured in January 2015, six months before the 14 July 2015 deadline; published 18 March 2015, four months before. Sub-sample (those keeping Server 2003) not sized. The release does not say whether these are concerns about staying or reasons for staying; read as concerns.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-keepers-cite-software-compatibility-72pct", "citation_text": "72% of respondents who planned to keep Windows Server 2003 after its July 2015 end of support cited software compatibility concerns, after security vulnerability (85%) and before compliance risk (66%), in Spiceworks' January 2015 survey (Spiceworks, 2015). Source: Spiceworks, \"Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)\" (http://www.spiceworks.com/press/releases/2015-03-18/2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-keepers-cite-software-compatibility-72pct." }, { "id": "spiceworks-2015-03-server-2003-average-migration-budget-60000-usd", "family": "eol-history-2003-2008", "statement": "$60,000 was the average budget companies allocated to Windows Server 2003 migration-related projects in Spiceworks' January 2015 survey of over 1,300 IT professionals, which Spiceworks scaled to a $100 billion opportunity (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 60000, "unit": "USD average migration-related budget per company", "display_value": "$60,000", "display_label": "Spiceworks survey of 1,300+ IT professionals, January 2015", "display_hook": null, "row_label": "Average migration budget", "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Over 1,300 IT professionals in the Spiceworks network in North America, EMEA and APAC who had migrated a Windows Server 2003 server in the past year or still ran one, surveyed in January 2015 (study sponsored by SanDisk)", "sample_n": 1300, "publisher": "Spiceworks", "source_title": "Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)", "source_url": "http://www.spiceworks.com/press/releases/2015-03-18/2", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "According to the report, companies are allocating an average of $60,000 for use in migration-related projects.", "locator": "Second paragraph. Snapshot: https://web.archive.org/web/20150518043350/http://www.spiceworks.com:80/press/releases/2015-03-18/2", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Spiceworks' own release, recovered from the Wayback Machine (the page is gone from spiceworks.com); page 2 cited eWeek's 23 March 2015 report of the same figures. Vendor-run survey sponsored by SanDisk (labelled manufacturer). Measured in January 2015, six months before the 14 July 2015 deadline; published 18 March 2015, four months before. The $100 billion is Spiceworks' extrapolation (hardware, software, cloud and services), not a measured spend. TechRadar restated the budget as GBP 40,000 (separate restatement record). migration-effort-cost cites this id.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-average-migration-budget-60000-usd", "citation_text": "$60,000 was the average budget companies allocated to Windows Server 2003 migration-related projects in Spiceworks' January 2015 survey of over 1,300 IT professionals, which Spiceworks scaled to a $100 billion opportunity (Spiceworks, 2015). Source: Spiceworks, \"Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)\" (http://www.spiceworks.com/press/releases/2015-03-18/2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-average-migration-budget-60000-usd." }, { "id": "spiceworks-2015-03-server-2003-migrating-to-2012-r2-64pct", "family": "eol-history-2003-2008", "statement": "64% of IT professionals migrating off Windows Server 2003 planned to move to Windows Server 2012 R2 and 14% to Windows Server 2012, in Spiceworks' January 2015 survey of over 1,300 IT professionals (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 64, "unit": "% of survey respondents (planned target; several answers allowed)", "display_value": "64%", "display_label": "", "display_hook": null, "row_label": "Moving to Windows Server 2012 R2", "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Over 1,300 IT professionals in the Spiceworks network in North America, EMEA and APAC who had migrated a Windows Server 2003 server in the past year or still ran one, surveyed in January 2015 (study sponsored by SanDisk)", "sample_n": 1300, "publisher": "Spiceworks", "source_title": "Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)", "source_url": "http://www.spiceworks.com/press/releases/2015-03-18/2", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "Sixty-four percent of IT professionals are planning to migrate from Windows Server 2003 to Windows Server 2012 R2 and 14 percent are planning to migrate to Windows Server 2012.", "locator": "Section 'Windows Server 2012 R2 is the clear operating system of choice for those migrating'. Snapshot: https://web.archive.org/web/20150518043350/http://www.spiceworks.com:80/press/releases/2015-03-18/2", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Spiceworks' own release, recovered from the Wayback Machine (the page is gone from spiceworks.com); page 2 cited eWeek's 23 March 2015 report of the same figures. Vendor-run survey sponsored by SanDisk (labelled manufacturer). Measured in January 2015, six months before the 14 July 2015 deadline; published 18 March 2015, four months before. Targets add up to more than 100% (2012 R2 64%, 2012 14%, 2008 R2 39%, 2008 6%, Linux/CentOS 9%), so respondents could name several. Contrast: Softchoice's scans of real servers (October 2014 to March 2015) found 66% on Windows Server 2008 and 12% on 2012.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-migrating-to-2012-r2-64pct", "citation_text": "64% of IT professionals migrating off Windows Server 2003 planned to move to Windows Server 2012 R2 and 14% to Windows Server 2012, in Spiceworks' January 2015 survey of over 1,300 IT professionals (Spiceworks, 2015). Source: Spiceworks, \"Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)\" (http://www.spiceworks.com/press/releases/2015-03-18/2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-migrating-to-2012-r2-64pct." }, { "id": "spiceworks-2015-03-server-2003-migrating-to-2008-r2-39pct", "family": "eol-history-2003-2008", "statement": "39% of IT professionals migrating off Windows Server 2003 named Windows Server 2008 R2 as a migration path, and 6% Windows Server 2008, a version itself due to leave support in January 2020, in Spiceworks' January 2015 survey (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 39, "unit": "% of survey respondents (planned target; several answers allowed)", "display_value": "39%", "display_label": "", "display_hook": null, "row_label": "Naming Windows Server 2008 R2 as a path", "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Over 1,300 IT professionals in the Spiceworks network in North America, EMEA and APAC who had migrated a Windows Server 2003 server in the past year or still ran one, surveyed in January 2015 (study sponsored by SanDisk)", "sample_n": 1300, "publisher": "Spiceworks", "source_title": "Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)", "source_url": "http://www.spiceworks.com/press/releases/2015-03-18/2", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "Windows Server 2008 R2 and Windows Server 2008 were cited by 39 percent and six percent of IT professionals respectively as their migration paths of choice.", "locator": "Section 'Windows Server 2012 R2 is the clear operating system of choice...', second paragraph. Snapshot: https://web.archive.org/web/20150518043350/http://www.spiceworks.com:80/press/releases/2015-03-18/2", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Spiceworks' own release, recovered from the Wayback Machine (the page is gone from spiceworks.com); page 2 cited eWeek's 23 March 2015 report of the same figures. Vendor-run survey sponsored by SanDisk (labelled manufacturer). Measured in January 2015, six months before the 14 July 2015 deadline; published 18 March 2015, four months before. Several answers allowed. Moving to 2008 R2 bought at most four and a half years of support (to 14 January 2020).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-migrating-to-2008-r2-39pct", "citation_text": "39% of IT professionals migrating off Windows Server 2003 named Windows Server 2008 R2 as a migration path, and 6% Windows Server 2008, a version itself due to leave support in January 2020, in Spiceworks' January 2015 survey (Spiceworks, 2015). Source: Spiceworks, \"Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)\" (http://www.spiceworks.com/press/releases/2015-03-18/2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-migrating-to-2008-r2-39pct." }, { "id": "spiceworks-2015-03-server-2003-not-upgrading-every-system-22pct", "family": "eol-history-2003-2008", "statement": "22% of IT professionals said they did not plan to upgrade every system running Windows Server 2003, six months before its July 2015 end of support, in Spiceworks' January 2015 survey (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 22, "unit": "% of survey respondents", "display_value": "22%", "display_label": "", "display_hook": null, "row_label": "Not upgrading every system", "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Over 1,300 IT professionals in the Spiceworks network in North America, EMEA and APAC who had migrated a Windows Server 2003 server in the past year or still ran one, surveyed in January 2015 (study sponsored by SanDisk)", "sample_n": 1300, "publisher": "Spiceworks", "source_title": "Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)", "source_url": "http://www.spiceworks.com/press/releases/2015-03-18/2", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "Twenty-two percent of IT professionals said they don't plan to upgrade every system currently running Windows Server 2003.", "locator": "Section 'Windows Server 2003 will remain in place for some'. Snapshot: https://web.archive.org/web/20150518043350/http://www.spiceworks.com:80/press/releases/2015-03-18/2", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Spiceworks' own release, recovered from the Wayback Machine (the page is gone from spiceworks.com); page 2 cited eWeek's 23 March 2015 report of the same figures. Vendor-run survey sponsored by SanDisk (labelled manufacturer). Measured in January 2015, six months before the 14 July 2015 deadline; published 18 March 2015, four months before. Those not fully migrated cited lack of time and budget constraints.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-not-upgrading-every-system-22pct", "citation_text": "22% of IT professionals said they did not plan to upgrade every system running Windows Server 2003, six months before its July 2015 end of support, in Spiceworks' January 2015 survey (Spiceworks, 2015). Source: Spiceworks, \"Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)\" (http://www.spiceworks.com/press/releases/2015-03-18/2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-not-upgrading-every-system-22pct." }, { "id": "spiceworks-2015-03-server-2003-apps-to-virtualised-environment-74pct", "family": "eol-history-2003-2008", "statement": "74% of IT professionals migrating or planning to migrate off Windows Server 2003 planned to move its applications to a virtualised environment, while only 12% planned to move to a cloud or hosted solution, in Spiceworks' January 2015 survey (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 74, "unit": "% of respondents fully, partially or planning to migrate", "display_value": "74%", "display_label": "", "display_hook": null, "row_label": "Moving its applications to a virtualised environment", "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Over 1,300 IT professionals in the Spiceworks network in North America, EMEA and APAC who had migrated a Windows Server 2003 server in the past year or still ran one, surveyed in January 2015 (study sponsored by SanDisk)", "sample_n": 1300, "publisher": "Spiceworks", "source_title": "Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)", "source_url": "http://www.spiceworks.com/press/releases/2015-03-18/2", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "Seventy-four percent of IT professionals who are either fully, partially, or planning to migrate, plan to move applications currently running on Windows Server 2003 to a virtualized environment.", "locator": "Section 'Virtualization leads the way in terms of migration approaches'. Snapshot: https://web.archive.org/web/20150518043350/http://www.spiceworks.com:80/press/releases/2015-03-18/2", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Spiceworks' own release, recovered from the Wayback Machine (the page is gone from spiceworks.com); page 2 cited eWeek's 23 March 2015 report of the same figures. Vendor-run survey sponsored by SanDisk (labelled manufacturer). Measured in January 2015, six months before the 14 July 2015 deadline; published 18 March 2015, four months before. Same release: 'Only 12 percent of respondents plan to move to a cloud/hosted solution.'", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-apps-to-virtualised-environment-74pct", "citation_text": "74% of IT professionals migrating or planning to migrate off Windows Server 2003 planned to move its applications to a virtualised environment, while only 12% planned to move to a cloud or hosted solution, in Spiceworks' January 2015 survey (Spiceworks, 2015). Source: Spiceworks, \"Survey: Windows Server 2003 End of Life Represents a $100 Billion Opportunity for the Technology Industry (Spiceworks press release on 'The Great IT Upgrade', 18 March 2015)\" (http://www.spiceworks.com/press/releases/2015-03-18/2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-apps-to-virtualised-environment-74pct." }, { "id": "spiceworks-2015-09-server-2003-companies-still-running-60pct", "family": "eol-history-2003-2008", "statement": "60% of companies in the Spiceworks network were still running Windows Server 2003 in September 2015, about 11 weeks after its 14 July 2015 end of support, by Spiceworks' network data (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 60, "unit": "% of companies in the Spiceworks network (still running Windows Server 2003)", "display_value": "60%", "display_label": "Companies in the Spiceworks network, September 2015 (Spiceworks)", "display_hook": null, "row_label": "September 2015", "publisher_short": null, "geography": "North America and EMEA (Spiceworks network)", "period": "2015-09", "population": "Companies in the Spiceworks network (anonymised network data; date of the data not stated beyond the 30 September 2015 release)", "sample_n": null, "publisher": "Spiceworks", "source_title": "Survey: IT Budgets Expected to Grow Slowly in 2016 as IT Pros Grapple with Competing Priorities (Spiceworks press release on the 2016 State of IT report, 30 September 2015)", "source_url": "https://www.spiceworks.com/press/releases/2015-09-30-2/", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-09-30", "accessed_at": "2026-10-14", "quote": "In fact, Spiceworks' network data shows 66 and 60 percent of companies in Spiceworks are still running Windows XP and Windows Server 2003 respectively, operating systems that have reached EOL.", "locator": "Second paragraph. Snapshot: https://web.archive.org/web/20190817184104/https://www.spiceworks.com/press/releases/2015-09-30-2/", "derived": false, "formula": null, "headline": false, "series": "eol-deadline-share-still-running-organisations", "history": [], "notes": "Spiceworks' own release via Wayback. Network data, not the release's July 2015 survey of 839 IT professionals. The EMEA release of the same day also gives 60% of EMEA companies. Spiceworks' June 2016 article says Server 2003 usage 'fell a mere 7%' in the following 10 months (to 53%). Measure matches the 61% (January 2015) and 53% (June 2016) points as 'companies running at least one instance', although this release says 'still running'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-09-server-2003-companies-still-running-60pct", "citation_text": "60% of companies in the Spiceworks network were still running Windows Server 2003 in September 2015, about 11 weeks after its 14 July 2015 end of support, by Spiceworks' network data (Spiceworks, 2015). Source: Spiceworks, \"Survey: IT Budgets Expected to Grow Slowly in 2016 as IT Pros Grapple with Competing Priorities (Spiceworks press release on the 2016 State of IT report, 30 September 2015)\" (https://www.spiceworks.com/press/releases/2015-09-30-2/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-09-server-2003-companies-still-running-60pct." }, { "id": "spiceworks-2015-09-server-2003-migration-planned-for-2016-32pct", "family": "eol-history-2003-2008", "statement": "32% of IT professionals planning operating system refreshes in 2016 said they planned a Windows Server 2003 migration, months after its July 2015 end of support, in Spiceworks' July 2015 survey of 839 IT professionals in North America and EMEA (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 32, "unit": "% of respondents planning OS refreshes in 2016", "display_value": "32%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and EMEA (Spiceworks network)", "period": "2015-07", "population": "839 IT professionals in North America and EMEA in the Spiceworks network, surveyed in July 2015 for the 2016 State of IT report", "sample_n": 839, "publisher": "Spiceworks", "source_title": "Survey: IT Budgets Expected to Grow Slowly in 2016 as IT Pros Grapple with Competing Priorities (Spiceworks press release on the 2016 State of IT report, 30 September 2015)", "source_url": "https://www.spiceworks.com/press/releases/2015-09-30-2/", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-09-30", "accessed_at": "2026-10-14", "quote": "Among those planning operating system refreshes in 2016, 47 percent said they planned to invest in Windows 10 and 32 percent said they planned a Windows Server 2003 migration.", "locator": "Second paragraph. Snapshot: https://web.archive.org/web/20190817184104/https://www.spiceworks.com/press/releases/2015-09-30-2/", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Spiceworks' own release via Wayback. Same release: 12% planned a SQL Server 2005 migration (end of support 12 April 2016). EMEA release: 28% of EMEA respondents planned a Server 2003 migration.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-09-server-2003-migration-planned-for-2016-32pct", "citation_text": "32% of IT professionals planning operating system refreshes in 2016 said they planned a Windows Server 2003 migration, months after its July 2015 end of support, in Spiceworks' July 2015 survey of 839 IT professionals in North America and EMEA (Spiceworks, 2015). Source: Spiceworks, \"Survey: IT Budgets Expected to Grow Slowly in 2016 as IT Pros Grapple with Competing Priorities (Spiceworks press release on the 2016 State of IT report, 30 September 2015)\" (https://www.spiceworks.com/press/releases/2015-09-30-2/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-09-server-2003-migration-planned-for-2016-32pct." }, { "id": "spiceworks-2016-07-server-2003-at-least-one-instance-53pct", "family": "eol-history-2003-2008", "statement": "53% of companies in the Spiceworks network still had at least one instance of Windows Server 2003 running in June 2016, 11 months after its July 2015 end of support, down from 61% in January 2015 (Spiceworks, 2016).", "short_statement": "**53%** of organisations still ran Windows Server 2003 in June 2016, 11 months after its end of support (Spiceworks, 2016).", "short_refs": null, "value": 53, "unit": "% of companies in the Spiceworks network (at least one Windows Server 2003 instance)", "display_value": "53%", "display_label": "Companies in the Spiceworks network, June 2016 (Spiceworks)", "display_hook": null, "row_label": "June 2016", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly on-premises)", "period": "2016-06", "population": "Physical servers and virtual machines, and the organisations running them, in Spiceworks' anonymised network inventory data, June 2016 (mostly on-premises, skewed to small and mid-sized businesses)", "sample_n": null, "publisher": "Spiceworks", "source_title": "Server Virtualization and OS Trends: 2016 Operating Systems and Hypervisor Market Share (Peter Tsai, Spiceworks Community)", "source_url": "https://community.spiceworks.com/networking/articles/2462-server-virtualization-and-os-trends", "source_type": "manufacturer", "source_access": "open", "published_at": "2016-08-30", "accessed_at": "2026-10-14", "quote": "In June 2016, the overall market share of Windows Server 2003 was relatively low, but the majority of companies (53%) had at least one instance of the unsupported OS running in the server room.", "locator": "Paragraph after the server OS chart. Snapshot: https://web.archive.org/web/20181117134211/https://community.spiceworks.com/networking/articles/2462-server-virtualization-and-os-trends", "derived": false, "formula": null, "headline": true, "series": "eol-deadline-share-still-running-organisations", "history": [], "notes": "Spiceworks' own article, recovered from the Wayback Machine (snapshot of 17 November 2018; the archived page is dated 30 August 2016, but trade press reported the same figures from 12 July 2016 from an earlier URL, community.spiceworks.com/networking/article/virtualization-os-server-market-share, which by 2018 redirected here). Page 2 cited Redmond Channel Partner, which rounded the figures. Same article: 'Windows Server 2003 usage fell a mere 7% in the 10 months following September 2015' (60% to 53%). Reasons given: no immediate need, lack of time, budget constraints. SC Magazine described the research as covering 800+ IT pros; Redmond's Spiceworks spokesperson said it drew on 'hundreds of millions of devices'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-07-server-2003-at-least-one-instance-53pct", "citation_text": "53% of companies in the Spiceworks network still had at least one instance of Windows Server 2003 running in June 2016, 11 months after its July 2015 end of support, down from 61% in January 2015 (Spiceworks, 2016). Source: Spiceworks, \"Server Virtualization and OS Trends: 2016 Operating Systems and Hypervisor Market Share (Peter Tsai, Spiceworks Community)\" (https://community.spiceworks.com/networking/articles/2462-server-virtualization-and-os-trends). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-07-server-2003-at-least-one-instance-53pct." }, { "id": "spiceworks-2016-07-server-2003-share-of-server-os-18pct", "family": "eol-history-2003-2008", "statement": "17.9% of the physical servers and virtual machines in the Spiceworks network still ran Windows Server 2003 in June 2016, a year after its July 2015 end of support (Spiceworks, 2016).", "short_statement": null, "short_refs": null, "value": 17.9, "unit": "% of server operating system installations (physical servers and VMs) in the Spiceworks network", "display_value": "17.9%", "display_label": "Physical servers and VMs in the Spiceworks network, June 2016 (Spiceworks)", "display_hook": null, "row_label": "Servers and VMs on Windows Server 2003, June 2016", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly on-premises)", "period": "2016-06", "population": "Physical servers and virtual machines, and the organisations running them, in Spiceworks' anonymised network inventory data, June 2016 (mostly on-premises, skewed to small and mid-sized businesses)", "sample_n": null, "publisher": "Spiceworks", "source_title": "Server Virtualization and OS Trends: 2016 Operating Systems and Hypervisor Market Share (Peter Tsai, Spiceworks Community)", "source_url": "https://community.spiceworks.com/networking/articles/2462-server-virtualization-and-os-trends", "source_type": "manufacturer", "source_access": "open", "published_at": "2016-08-30", "accessed_at": "2026-10-14", "quote": "While 23.6% of server OSes were Windows Server 2012, 45.4% were still Windows Server 2008 (making it the most popular server OS), and 17.9% of VMs and servers were stuck on the end-of-life Windows Server 2003.", "locator": "Paragraph beginning 'And few are using the latest operating systems'. Snapshot: https://web.archive.org/web/20181117134211/https://community.spiceworks.com/networking/articles/2462-server-virtualization-and-os-trends", "derived": false, "formula": null, "headline": false, "series": "eol-deadline-share-still-running-instances", "history": [], "notes": "Spiceworks' own article, recovered from the Wayback Machine (snapshot of 17 November 2018; the archived page is dated 30 August 2016, but trade press reported the same figures from 12 July 2016 from an earlier URL, community.spiceworks.com/networking/article/virtualization-os-server-market-share, which by 2018 redirected here). Page 2 cited Redmond Channel Partner, which rounded the figures. Trade press and page 2 rounded to 18% (the id keeps '18pct'). Redmond noted CloudPhysics had found the same 18% a year earlier in a different sample (not fetched). Same article: 87.7% of servers and VMs ran Windows Server (install-base-audits records Spiceworks' server-OS mix).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-07-server-2003-share-of-server-os-18pct", "citation_text": "17.9% of the physical servers and virtual machines in the Spiceworks network still ran Windows Server 2003 in June 2016, a year after its July 2015 end of support (Spiceworks, 2016). Source: Spiceworks, \"Server Virtualization and OS Trends: 2016 Operating Systems and Hypervisor Market Share (Peter Tsai, Spiceworks Community)\" (https://community.spiceworks.com/networking/articles/2462-server-virtualization-and-os-trends). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-07-server-2003-share-of-server-os-18pct." }, { "id": "spiceworks-2016-07-server-2008-most-used-server-os-45pct", "family": "eol-history-2003-2008", "statement": "45.4% of the physical servers and virtual machines in the Spiceworks network ran Windows Server 2008 in June 2016, the most-used server OS three and a half years before its own January 2020 end of support (Spiceworks, 2016).", "short_statement": "In June 2016, Windows Server 2008 ran **45.4%** of the servers and virtual machines Spiceworks could see.", "short_refs": null, "value": 45.4, "unit": "% of server operating system installations (physical servers and VMs) in the Spiceworks network", "display_value": "45.4%", "display_label": "", "display_hook": null, "row_label": "Servers and VMs on Windows Server 2008, June 2016", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly on-premises)", "period": "2016-06", "population": "Physical servers and virtual machines, and the organisations running them, in Spiceworks' anonymised network inventory data, June 2016 (mostly on-premises, skewed to small and mid-sized businesses)", "sample_n": null, "publisher": "Spiceworks", "source_title": "Server Virtualization and OS Trends: 2016 Operating Systems and Hypervisor Market Share (Peter Tsai, Spiceworks Community)", "source_url": "https://community.spiceworks.com/networking/articles/2462-server-virtualization-and-os-trends", "source_type": "manufacturer", "source_access": "open", "published_at": "2016-08-30", "accessed_at": "2026-10-14", "quote": "While 23.6% of server OSes were Windows Server 2012, 45.4% were still Windows Server 2008 (making it the most popular server OS), and 17.9% of VMs and servers were stuck on the end-of-life Windows Server 2003.", "locator": "Paragraph beginning 'And few are using the latest operating systems'. Snapshot: https://web.archive.org/web/20181117134211/https://community.spiceworks.com/networking/articles/2462-server-virtualization-and-os-trends", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Spiceworks' own article, recovered from the Wayback Machine (snapshot of 17 November 2018; the archived page is dated 30 August 2016, but trade press reported the same figures from 12 July 2016 from an earlier URL, community.spiceworks.com/networking/article/virtualization-os-server-market-share, which by 2018 redirected here). Page 2 cited Redmond Channel Partner, which rounded the figures. Rounded to 45% in trade press and on page 2 (id keeps '45pct'). Network World restated it as '45 percent of companies' (restatement record).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-07-server-2008-most-used-server-os-45pct", "citation_text": "45.4% of the physical servers and virtual machines in the Spiceworks network ran Windows Server 2008 in June 2016, the most-used server OS three and a half years before its own January 2020 end of support (Spiceworks, 2016). Source: Spiceworks, \"Server Virtualization and OS Trends: 2016 Operating Systems and Hypervisor Market Share (Peter Tsai, Spiceworks Community)\" (https://community.spiceworks.com/networking/articles/2462-server-virtualization-and-os-trends). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-07-server-2008-most-used-server-os-45pct." }, { "id": "spiceworks-2016-07-server-2012-share-of-server-os-24pct", "family": "eol-history-2003-2008", "statement": "23.6% of the physical servers and virtual machines in the Spiceworks network ran Windows Server 2012 in June 2016, four years after its release (Spiceworks, 2016).", "short_statement": null, "short_refs": null, "value": 23.6, "unit": "% of server operating system installations (physical servers and VMs) in the Spiceworks network", "display_value": "23.6%", "display_label": "", "display_hook": null, "row_label": "Servers and VMs on Windows Server 2012, June 2016", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly on-premises)", "period": "2016-06", "population": "Physical servers and virtual machines, and the organisations running them, in Spiceworks' anonymised network inventory data, June 2016 (mostly on-premises, skewed to small and mid-sized businesses)", "sample_n": null, "publisher": "Spiceworks", "source_title": "Server Virtualization and OS Trends: 2016 Operating Systems and Hypervisor Market Share (Peter Tsai, Spiceworks Community)", "source_url": "https://community.spiceworks.com/networking/articles/2462-server-virtualization-and-os-trends", "source_type": "manufacturer", "source_access": "open", "published_at": "2016-08-30", "accessed_at": "2026-10-14", "quote": "While 23.6% of server OSes were Windows Server 2012, 45.4% were still Windows Server 2008 (making it the most popular server OS), and 17.9% of VMs and servers were stuck on the end-of-life Windows Server 2003.", "locator": "Paragraph beginning 'And few are using the latest operating systems'. Snapshot: https://web.archive.org/web/20181117134211/https://community.spiceworks.com/networking/articles/2462-server-virtualization-and-os-trends", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Spiceworks' own article, recovered from the Wayback Machine (snapshot of 17 November 2018; the archived page is dated 30 August 2016, but trade press reported the same figures from 12 July 2016 from an earlier URL, community.spiceworks.com/networking/article/virtualization-os-server-market-share, which by 2018 redirected here). Page 2 cited Redmond Channel Partner, which rounded the figures. Rounded to 24% in trade press and on page 2 (id keeps '24pct'). BetaNews printed it as 'Windows Server 2013' (restatement record).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-07-server-2012-share-of-server-os-24pct", "citation_text": "23.6% of the physical servers and virtual machines in the Spiceworks network ran Windows Server 2012 in June 2016, four years after its release (Spiceworks, 2016). Source: Spiceworks, \"Server Virtualization and OS Trends: 2016 Operating Systems and Hypervisor Market Share (Peter Tsai, Spiceworks Community)\" (https://community.spiceworks.com/networking/articles/2462-server-virtualization-and-os-trends). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-07-server-2012-share-of-server-os-24pct." }, { "id": "datacenterknowledge-2016-07-13-restates-spiceworks-53pct-as-still-running-server-2003", "family": "eol-history-2003-2008", "statement": "53% of companies were 'still running' Windows Server 2003 a year after its end of life, as Data Center Knowledge headlined Spiceworks' 2016 finding, dropping the qualifier 'at least one instance' (Data Center Knowledge, 2016).", "short_statement": null, "short_refs": null, "value": 53, "unit": "% of companies (restated)", "display_value": "53%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Spiceworks network)", "period": "2016-06", "population": "Companies in Spiceworks' June 2016 network data (as restated)", "sample_n": null, "publisher": "Data Center Knowledge", "source_title": "One Year After EOL, Windows Server 2003 Still Running in 53 Percent of Companies (Data Center Knowledge, 13 July 2016)", "source_url": "https://www.datacenterknowledge.com/servers/one-year-after-eol-windows-server-2003-still-running-in-53-percent-of-companies", "source_type": "secondary", "source_access": "open", "published_at": "2016-07-13", "accessed_at": "2026-10-14", "quote": "One Year After EOL, Windows Server 2003 Still Running in 53 Percent of Companies", "locator": "Headline", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record: the headline reads as if 53% of companies ran their estate on Server 2003; Spiceworks measured companies with at least one instance. The article links to Spiceworks' now-redirected community article.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#datacenterknowledge-2016-07-13-restates-spiceworks-53pct-as-still-running-server-2003", "citation_text": "53% of companies were 'still running' Windows Server 2003 a year after its end of life, as Data Center Knowledge headlined Spiceworks' 2016 finding, dropping the qualifier 'at least one instance' (Data Center Knowledge, 2016). Source: Data Center Knowledge, \"One Year After EOL, Windows Server 2003 Still Running in 53 Percent of Companies (Data Center Knowledge, 13 July 2016)\" (https://www.datacenterknowledge.com/servers/one-year-after-eol-windows-server-2003-still-running-in-53-percent-of-companies). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#datacenterknowledge-2016-07-13-restates-spiceworks-53pct-as-still-running-server-2003." }, { "id": "networkworld-2016-07-12-restates-spiceworks-45pct-server-os-share-as-share-of-companies", "family": "eol-history-2003-2008", "statement": "45% of companies were using Windows Server 2008 in 2016, as Network World restated Spiceworks' finding, turning a share of server operating system installations into a share of companies (Network World, 2016).", "short_statement": null, "short_refs": null, "value": 45, "unit": "% of companies (restated; the source measured % of server OS installations)", "display_value": "45%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Spiceworks network)", "period": "2016-06", "population": "Spiceworks' June 2016 network data (as restated)", "sample_n": null, "publisher": "Network World", "source_title": "One year after its demise, Windows Server 2003 is hanging around (Network World, Andy Patrizio, 12 July 2016)", "source_url": "https://www.networkworld.com/article/953125/one-year-after-its-demise-windows-server-2003-is-hanging-around.html", "source_type": "secondary", "source_access": "open", "published_at": "2016-07-12", "accessed_at": "2026-10-14", "quote": "Spiceworks found Windows Server 2008 at the head of the pack by a wide margin, with 45 percent of companies using the OS, followed by Server 2012 at 24 percent, Server 2003 at 18 percent", "locator": "Ninth paragraph ('In terms of server deployments')", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record. Spiceworks' article gives 45.4% of server OSes (physical servers and VMs), not of companies. The same Network World piece correctly says 53% of companies had at least one Server 2003 instance and recalls 60% the previous September.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2016-07-12-restates-spiceworks-45pct-server-os-share-as-share-of-companies", "citation_text": "45% of companies were using Windows Server 2008 in 2016, as Network World restated Spiceworks' finding, turning a share of server operating system installations into a share of companies (Network World, 2016). Source: Network World, \"One year after its demise, Windows Server 2003 is hanging around (Network World, Andy Patrizio, 12 July 2016)\" (https://www.networkworld.com/article/953125/one-year-after-its-demise-windows-server-2003-is-hanging-around.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2016-07-12-restates-spiceworks-45pct-server-os-share-as-share-of-companies." }, { "id": "betanews-2016-07-13-restates-spiceworks-server-2012-24pct-as-windows-server-2013", "family": "eol-history-2003-2008", "statement": "24% of servers were said to run 'Windows Server 2013' in BetaNews' July 2016 report of Spiceworks' data, a Windows Server version that does not exist; Spiceworks measured Windows Server 2012 (BetaNews, 2016).", "short_statement": null, "short_refs": null, "value": 24, "unit": "% of server OS installations (restated, version misnamed)", "display_value": "24%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Spiceworks network)", "period": "2016-06", "population": "Spiceworks' June 2016 network data (as restated)", "sample_n": null, "publisher": "BetaNews (under licence from ITProPortal)", "source_title": "More than half of companies still use Windows Server 2003 (BetaNews, 13 July 2016)", "source_url": "https://betanews.com/article/windows-server-2003-instances/", "source_type": "secondary", "source_access": "open", "published_at": "2016-07-13", "accessed_at": "2026-10-14", "quote": "Windows Server 2008 is still the most popular one, holding 45 percent of the market. It is followed by Windows Server 2013 with 24 percent.", "locator": "Fifth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record showing drift: Spiceworks' figure was Windows Server 2012 at 23.6%. Raw file name says 2015 but the article's published_time is 13 July 2016. Source title is the article's subject as fetched; verify headline wording at merge if displayed.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#betanews-2016-07-13-restates-spiceworks-server-2012-24pct-as-windows-server-2013", "citation_text": "24% of servers were said to run 'Windows Server 2013' in BetaNews' July 2016 report of Spiceworks' data, a Windows Server version that does not exist; Spiceworks measured Windows Server 2012 (BetaNews, 2016). Source: BetaNews (under licence from ITProPortal), \"More than half of companies still use Windows Server 2003 (BetaNews, 13 July 2016)\" (https://betanews.com/article/windows-server-2003-instances/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#betanews-2016-07-13-restates-spiceworks-server-2012-24pct-as-windows-server-2013." }, { "id": "dck-2014-09-12-microsoft-estimate-server-2003-23-8-million-instances-11-9-million-servers", "family": "eol-history-2003-2008", "statement": "23.8 million Windows Server 2003 instances were running across 11.9 million physical servers worldwide in September 2014, by a Microsoft estimate reported by Data Center Knowledge, the earliest dated appearance of the figure found (Microsoft via Data Center Knowledge, 2014).", "short_statement": null, "short_refs": null, "value": 23800000, "unit": "Windows Server 2003 instances worldwide (Microsoft estimate)", "display_value": "23.8 million", "display_label": "", "display_hook": null, "row_label": "Data Center Knowledge, September 2014: 'Microsoft estimate', instances", "publisher_short": null, "geography": "Worldwide", "period": "2014-09", "population": "Windows Server 2003 instances worldwide, physical and virtual (Microsoft estimate; method not published)", "sample_n": null, "publisher": "Data Center Knowledge (reporting a Microsoft estimate)", "source_title": "Ditching Windows Server 2003 is Necessary if Not Easy (Data Center Knowledge, Jason Verge, 12 September 2014)", "source_url": "https://www.datacenterknowledge.com/servers/ditching-windows-server-2003-is-necessary-if-not-easy", "source_type": "secondary", "source_access": "open", "published_at": "2014-09-12", "accessed_at": "2026-10-14", "quote": "Microsoft estimates there are about 23.8 million instances of Windows Server 2003 running today across 11.9 million physical servers worldwide, counting for about 39 percent of the entire Windows install base.", "locator": "First paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "UNVERIFIED AT ORIGIN: the quote was fetched and is in this trade-press source, but no Microsoft document carrying the figure was found (Microsoft's own 2014-2015 pages and releases give no count; the September 2014 appearances trace to Insight Enterprises' campaign). Publish only as 'reported by', or not at all, per the brief's list of numbers we will not publish. Unrounded form of the claim later printed as 24 million on 12 million servers (Redmond, 18 September 2014). DCK names no Microsoft document; the article is built on an interview with Insight Enterprises. Microsoft origin unverified.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#dck-2014-09-12-microsoft-estimate-server-2003-23-8-million-instances-11-9-million-servers", "citation_text": "23.8 million Windows Server 2003 instances were running across 11.9 million physical servers worldwide in September 2014, by a Microsoft estimate reported by Data Center Knowledge, the earliest dated appearance of the figure found (Microsoft via Data Center Knowledge, 2014). Source: Data Center Knowledge (reporting a Microsoft estimate), \"Ditching Windows Server 2003 is Necessary if Not Easy (Data Center Knowledge, Jason Verge, 12 September 2014)\" (https://www.datacenterknowledge.com/servers/ditching-windows-server-2003-is-necessary-if-not-easy). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#dck-2014-09-12-microsoft-estimate-server-2003-23-8-million-instances-11-9-million-servers." }, { "id": "rcp-2015-04-07-microsoft-wpc-2014-server-2003-22-million-instances", "family": "eol-history-2003-2008", "statement": "22 million instances of Windows Server 2003 were still running worldwide in July 2014, Microsoft corporate vice president John Case told its Worldwide Partner Conference, putting the partner opportunity at $6 billion (Microsoft via Redmond Channel Partner, 2015).", "short_statement": "Microsoft's own July 2014 count was **22 million** Windows Server 2003 instances; the 24 million quoted since has no Microsoft source.", "short_refs": [ "redmondmag-2014-09-18-restates-microsoft-24-million-server-2003-instances-on-12-million-servers" ], "value": 22000000, "unit": "Windows Server 2003 instances worldwide (Microsoft statement)", "display_value": "22 million", "display_label": "", "display_hook": null, "row_label": "Microsoft (John Case), July 2014: instances", "publisher_short": null, "geography": "Worldwide", "period": "2014-07", "population": "Windows Server 2003 instances worldwide (Microsoft statement at WPC 2014)", "sample_n": null, "publisher": "Redmond Channel Partner (reporting a Microsoft statement)", "source_title": "Retiring Windows Server 2003: Lessons from Windows XP's End-of-Life (Redmond Channel Partner, 7 April 2015)", "source_url": "https://rcpmag.com/articles/2015/04/01/retiring-windows-server-2003.aspx", "source_type": "secondary", "source_access": "open", "published_at": "2015-04-07", "accessed_at": "2026-10-14", "quote": "At the 2014 Worldwide Partner Conference (WPC), Microsoft Office Corporate Vice President John Case said that there were still 22 million instances of Windows Server 2003 running worldwide, amounting to an estimated $6 billion in potential partner revenue.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Contradicts the 24 million / 23.8 million instances that trade press attributed to Microsoft data from the same month. WPC 2014 keynote transcript not fetched; Microsoft origin unverified. URL path is dated 2015/04/01, page shows 7 April 2015.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcp-2015-04-07-microsoft-wpc-2014-server-2003-22-million-instances", "citation_text": "22 million instances of Windows Server 2003 were still running worldwide in July 2014, Microsoft corporate vice president John Case told its Worldwide Partner Conference, putting the partner opportunity at $6 billion (Microsoft via Redmond Channel Partner, 2015). Source: Redmond Channel Partner (reporting a Microsoft statement), \"Retiring Windows Server 2003: Lessons from Windows XP's End-of-Life (Redmond Channel Partner, 7 April 2015)\" (https://rcpmag.com/articles/2015/04/01/retiring-windows-server-2003.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcp-2015-04-07-microsoft-wpc-2014-server-2003-22-million-instances." }, { "id": "networkworld-2015-07-10-microsoft-almost-24-million-server-2003-instances-no-newer-count", "family": "eol-history-2003-2008", "statement": "Almost 24 million Windows Server 2003 instances in July 2014 was still Microsoft's latest published count on 10 July 2015, four days before end of support, as Microsoft had released no newer number (Network World, 2015).", "short_statement": null, "short_refs": null, "value": 24000000, "unit": "Windows Server 2003 instances worldwide (Microsoft, July 2014)", "display_value": "almost 24 million", "display_label": "", "display_hook": null, "row_label": "Network World, July 2015: instances", "publisher_short": null, "geography": "Worldwide", "period": "2014-07", "population": "Windows Server 2003 instances worldwide (Microsoft statement)", "sample_n": null, "publisher": "Network World (IDG News Service)", "source_title": "The grim reaper approaches for Windows Server 2003 (Network World, Blair Hanley Frank, 10 July 2015)", "source_url": "https://www.networkworld.com/article/940968/the-grim-reaper-approaches-for-windows-server-2003.html", "source_type": "secondary", "source_access": "open", "published_at": "2015-07-10", "accessed_at": "2026-10-14", "quote": "Microsoft says there were almost 24 million instances of Windows Server 2003 running in July 2014, though it hasn't released more recent numbers as the end-of-support date has loomed.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "UNVERIFIED AT ORIGIN: the quote was fetched and is in this trade-press source, but no Microsoft document carrying the figure was found (Microsoft's own 2014-2015 pages and releases give no count; the September 2014 appearances trace to Insight Enterprises' campaign). Publish only as 'reported by', or not at all, per the brief's list of numbers we will not publish. Shows that Microsoft gave no count at the deadline itself. Microsoft's Mike Schutz said most customers had moved 'the vast percentage' of their workloads (no figure).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2015-07-10-microsoft-almost-24-million-server-2003-instances-no-newer-count", "citation_text": "Almost 24 million Windows Server 2003 instances in July 2014 was still Microsoft's latest published count on 10 July 2015, four days before end of support, as Microsoft had released no newer number (Network World, 2015). Source: Network World (IDG News Service), \"The grim reaper approaches for Windows Server 2003 (Network World, Blair Hanley Frank, 10 July 2015)\" (https://www.networkworld.com/article/940968/the-grim-reaper-approaches-for-windows-server-2003.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2015-07-10-microsoft-almost-24-million-server-2003-instances-no-newer-count." }, { "id": "microsoft-2015-06-server-2003-page-1-in-6-instances-host-sql-server-2005", "family": "eol-history-2003-2008", "statement": "1 in 6 Windows Server 2003 instances hosted SQL Server 2005, Microsoft said on its Windows Server 2003 end-of-support page in June 2015, a month before the deadline (Microsoft, 2015).", "short_statement": null, "short_refs": null, "value": 16.7, "unit": "% of Windows Server 2003 instances hosting SQL Server 2005 (1 in 6)", "display_value": "1 in 6", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2015-06", "population": "Windows Server 2003 instances (Microsoft statement; base not given)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2003 end of support (Microsoft Server and Cloud Platform page, archived 3 June 2015)", "source_url": "http://www.microsoft.com/en-us/server-cloud/products/windows-server-2003/default.aspx", "source_type": "primary", "source_access": "open", "published_at": "2015-06-03", "accessed_at": "2026-10-14", "quote": "Did you know that 1 in 6 Windows Server 2003 instances host SQL Server 2005?", "locator": "Section 'Upgrade Your Microsoft Platform: Windows Server + SQL Server'. Snapshot: https://web.archive.org/web/20150603155424/http://www.microsoft.com/en-us/server-cloud/products/windows-server-2003/default.aspx", "derived": true, "formula": "1 / 6 = 16.7%; Microsoft states '1 in 6'", "headline": false, "series": "", "history": [], "notes": "Microsoft's own page (undated; published_at is the snapshot date). The August 2014 snapshot of the same page carried no instance figures. SQL Server 2005 left extended support on 12 April 2016, nine months after Server 2003.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2015-06-server-2003-page-1-in-6-instances-host-sql-server-2005", "citation_text": "1 in 6 Windows Server 2003 instances hosted SQL Server 2005, Microsoft said on its Windows Server 2003 end-of-support page in June 2015, a month before the deadline (Microsoft, 2015). Source: Microsoft, \"Windows Server 2003 end of support (Microsoft Server and Cloud Platform page, archived 3 June 2015)\" (http://www.microsoft.com/en-us/server-cloud/products/windows-server-2003/default.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2015-06-server-2003-page-1-in-6-instances-host-sql-server-2005." }, { "id": "microsoft-apac-2014-07-16-spiceworks-asia-pacific-64-5pct-running-server-2003", "family": "eol-history-2003-2008", "statement": "64.5% of Asia Pacific organisations using Spiceworks' tools were still running at least one instance of Windows Server 2003 in June 2014, 13 months before its end of support, by Spiceworks data cited by Microsoft (Microsoft, 2014).", "short_statement": null, "short_refs": null, "value": 64.5, "unit": "% of Asia Pacific organisations using Spiceworks tools (at least one Windows Server 2003 instance)", "display_value": "64.5%", "display_label": "", "display_hook": null, "row_label": "June 2014, Asia Pacific organisations (cited by Microsoft)", "publisher_short": null, "geography": "Asia Pacific", "period": "2014-06", "population": "Organisations in Asia Pacific using Spiceworks' tools (Spiceworks inventory data)", "sample_n": null, "publisher": "Microsoft (citing Spiceworks)", "source_title": "One year countdown to Windows Server 2003 end of support begins (Microsoft Stories Asia, 16 July 2014)", "source_url": "https://news.microsoft.com/apac/2014/07/16/oneyearcountdowntowinserver/", "source_type": "manufacturer", "source_access": "open", "published_at": "2014-07-16", "accessed_at": "2026-10-14", "quote": "According to Spiceworks, a global professional network of more than 5 million IT Professionals, 64.5% of organizations who use its tools in Asia Pacific are still running at least one instance of Windows Server 2003 as of June 2014.", "locator": "Third paragraph", "derived": false, "formula": null, "headline": false, "series": "eol-deadline-share-still-running-organisations", "history": [], "notes": "Microsoft's own one-year-countdown release cites Spiceworks rather than its own installed-base count. Asia Pacific only: not directly comparable with Spiceworks' global 61% (January 2015). Spiceworks' own APAC publication not located. The release gives the end date as 15 July 2015 (Asia Pacific time).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-apac-2014-07-16-spiceworks-asia-pacific-64-5pct-running-server-2003", "citation_text": "64.5% of Asia Pacific organisations using Spiceworks' tools were still running at least one instance of Windows Server 2003 in June 2014, 13 months before its end of support, by Spiceworks data cited by Microsoft (Microsoft, 2014). Source: Microsoft (citing Spiceworks), \"One year countdown to Windows Server 2003 end of support begins (Microsoft Stories Asia, 16 July 2014)\" (https://news.microsoft.com/apac/2014/07/16/oneyearcountdowntowinserver/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-apac-2014-07-16-spiceworks-asia-pacific-64-5pct-running-server-2003." }, { "id": "microsoft-apac-2014-07-16-server-migration-200-days-application-migration-300-days", "family": "eol-history-2003-2008", "statement": "200 days for a typical server migration and over 300 days for an application migration was Microsoft's estimate a year before Windows Server 2003's end of support (Microsoft, 2014).", "short_statement": null, "short_refs": null, "value": 200, "unit": "days (typical server migration, Microsoft estimate)", "display_value": "200 days", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Asia Pacific (Microsoft statement)", "period": "2014-07", "population": "Server and application migrations (Microsoft statement; no method given)", "sample_n": null, "publisher": "Microsoft", "source_title": "One year countdown to Windows Server 2003 end of support begins (Microsoft Stories Asia, 16 July 2014)", "source_url": "https://news.microsoft.com/apac/2014/07/16/oneyearcountdowntowinserver/", "source_type": "manufacturer", "source_access": "open", "published_at": "2014-07-16", "accessed_at": "2026-10-14", "quote": "A typical server migration takes 200 days while an application migration takes over 300 days.", "locator": "Quote from Arun Ulag, General Manager, Cloud & Enterprise Division, Microsoft Asia Pacific", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor claim without method. HP's Doug Oathout gave the same 200-day average at WPC 2014 (ChannelBuzz, 14 July 2014); The Register (14 July 2014) attributed 200 days to 'Microsoft partner QA'. migration-effort-cost may cite this record.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-apac-2014-07-16-server-migration-200-days-application-migration-300-days", "citation_text": "200 days for a typical server migration and over 300 days for an application migration was Microsoft's estimate a year before Windows Server 2003's end of support (Microsoft, 2014). Source: Microsoft, \"One year countdown to Windows Server 2003 end of support begins (Microsoft Stories Asia, 16 July 2014)\" (https://news.microsoft.com/apac/2014/07/16/oneyearcountdowntowinserver/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-apac-2014-07-16-server-migration-200-days-application-migration-300-days." }, { "id": "theregister-2014-07-14-microsoft-custom-support-200000-usd-a-year-server-2003", "family": "eol-history-2003-2008", "statement": "$200,000 or more a year on average was Microsoft's own estimate of the cost of custom support for organisations keeping Windows Server 2003 past its July 2015 end of support (Microsoft via The Register, 2014).", "short_statement": "Microsoft put custom support for Windows Server 2003 after its end at **$200,000** or more a year.", "short_refs": null, "value": 200000, "unit": "USD per year (custom support, Microsoft estimate of average)", "display_value": "$200,000+ a year", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2014-07", "population": "Organisations buying Microsoft custom support for Windows Server 2003 (Microsoft statement)", "sample_n": null, "publisher": "The Register (reporting Microsoft)", "source_title": "July 14 2015, Tuesday: No more support for Windows Server 2003. Good luck (The Register, 14 July 2014)", "source_url": "https://www.theregister.com/off-prem/2014/07/14/july-14-2015-tuesday-no-more-support-for-windows-server-2003-good-luck/1147918", "source_type": "secondary", "source_access": "open", "published_at": "2014-07-14", "accessed_at": "2026-10-14", "quote": "Failure to do so could be costly for customers: Microsoft reckons the end of support impact can be \"$200,000 + a year on average\" for anyone that wants custom support.", "locator": "Ninth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Microsoft source document not fetched. Softchoice (RCP, May 2015) also put a Server 2003 custom support agreement at '$200,000 or more per year', with an entry payment that doubles each year. Source title follows the article URL slug.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-07-14-microsoft-custom-support-200000-usd-a-year-server-2003", "citation_text": "$200,000 or more a year on average was Microsoft's own estimate of the cost of custom support for organisations keeping Windows Server 2003 past its July 2015 end of support (Microsoft via The Register, 2014). Source: The Register (reporting Microsoft), \"July 14 2015, Tuesday: No more support for Windows Server 2003. Good luck (The Register, 14 July 2014)\" (https://www.theregister.com/off-prem/2014/07/14/july-14-2015-tuesday-no-more-support-for-windows-server-2003-good-luck/1147918). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-07-14-microsoft-custom-support-200000-usd-a-year-server-2003." }, { "id": "networkworld-2015-07-10-us-navy-9-1-million-usd-extended-support-server-2003-xp", "family": "eol-history-2003-2008", "statement": "$9.1 million was what the US Navy was paying Microsoft in 2015 for extended support covering Windows Server 2003, Windows XP, Office 2003 and Exchange 2003 (Network World, 2015).", "short_statement": null, "short_refs": null, "value": 9100000, "unit": "USD (US Navy custom support contract)", "display_value": "$9.1 million", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United States", "period": "2015", "population": "US Navy custom support contract with Microsoft", "sample_n": null, "publisher": "Network World (IDG News Service)", "source_title": "The grim reaper approaches for Windows Server 2003 (Network World, Blair Hanley Frank, 10 July 2015)", "source_url": "https://www.networkworld.com/article/940968/the-grim-reaper-approaches-for-windows-server-2003.html", "source_type": "secondary", "source_access": "open", "published_at": "2015-07-10", "accessed_at": "2026-10-14", "quote": "That's borne out by the experience of the U.S. Navy, which is paying Microsoft $9.1 million for a contract that provides extended support for Windows Server 2003, Windows XP, Office 2003 and Exchange 2003.", "locator": "Twelfth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The Navy contract itself was not fetched; Network World is the report. Covers four products, so it is not a Server 2003 price.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2015-07-10-us-navy-9-1-million-usd-extended-support-server-2003-xp", "citation_text": "$9.1 million was what the US Navy was paying Microsoft in 2015 for extended support covering Windows Server 2003, Windows XP, Office 2003 and Exchange 2003 (Network World, 2015). Source: Network World (IDG News Service), \"The grim reaper approaches for Windows Server 2003 (Network World, Blair Hanley Frank, 10 July 2015)\" (https://www.networkworld.com/article/940968/the-grim-reaper-approaches-for-windows-server-2003.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2015-07-10-us-navy-9-1-million-usd-extended-support-server-2003-xp." }, { "id": "insight-2014-09-17-release-restates-24-million-instances-as-24-million-servers", "family": "eol-history-2003-2008", "statement": "24 million servers could be affected by Windows Server 2003's end of support, Insight Enterprises' September 2014 release said, turning the 24 million instances attributed to Microsoft (on 12 million physical servers) into servers (Insight Enterprises, 2014).", "short_statement": null, "short_refs": null, "value": 24000000, "unit": "servers (restated; the Microsoft-attributed figure counted instances)", "display_value": "24 million", "display_label": "", "display_hook": null, "row_label": "Insight Enterprises, September 2014: 'servers'", "publisher_short": null, "geography": "Worldwide", "period": "2014-09", "population": "Windows Server 2003 installations worldwide (as restated by a Microsoft licensing partner)", "sample_n": null, "publisher": "Insight Enterprises (press release, reprinted by In Business Magazine, Phoenix)", "source_title": "End-of-Service for Microsoft Server 2003 to Impact Millions of Businesses (Insight Enterprises press release, 17 September 2014)", "source_url": "https://inbusinessphx.com/just-in/end-service-microsoft-server-2003-impact-millions-businesses-2", "source_type": "manufacturer", "source_access": "open", "published_at": "2014-09-17", "accessed_at": "2026-10-14", "quote": "The end of service for Windows Server 2003, set for July 14, 2015, has the potential to affect 24 million servers that run large and small businesses.", "locator": "First paragraph of the release", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record and a key link in the trail: the release names no source, and also says 'An estimated 39 percent of all installed Microsoft Server operating systems are the 2003 edition.' Every September 2014 appearance of 24 million / 39% found traces to Insight's campaign (Data Center Knowledge 12 September, interview with Insight; RCP's Q&A with Insight 17 September, republished by Redmond 18 September, which attributes the figures to 'Microsoft data' as of July; CIO.com 25 September, quoting Insight's David Mayer). GlobeNewswire's copy of the release returned HTTP 403 and has no Wayback capture.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#insight-2014-09-17-release-restates-24-million-instances-as-24-million-servers", "citation_text": "24 million servers could be affected by Windows Server 2003's end of support, Insight Enterprises' September 2014 release said, turning the 24 million instances attributed to Microsoft (on 12 million physical servers) into servers (Insight Enterprises, 2014). Source: Insight Enterprises (press release, reprinted by In Business Magazine, Phoenix), \"End-of-Service for Microsoft Server 2003 to Impact Millions of Businesses (Insight Enterprises press release, 17 September 2014)\" (https://inbusinessphx.com/just-in/end-service-microsoft-server-2003-impact-millions-businesses-2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#insight-2014-09-17-release-restates-24-million-instances-as-24-million-servers." }, { "id": "cio-2014-09-25-restates-24-million-instances-as-servers-and-9-4-million-in-us", "family": "eol-history-2003-2008", "statement": "24 million servers, 9.4 million of them in the US, were running Windows Server 2003 in September 2014, CIO.com reported from Insight, where Redmond's report of the same figures had 24 million instances and 9.4 million in North America (CIO.com, 2014).", "short_statement": null, "short_refs": null, "value": 24000000, "unit": "servers (restated)", "display_value": "24 million", "display_label": "", "display_hook": null, "row_label": "CIO.com, September 2014: 'servers'", "publisher_short": null, "geography": "Worldwide; United States", "period": "2014-09", "population": "Windows Server 2003 installations (as restated)", "sample_n": null, "publisher": "CIO.com", "source_title": "Windows Server 2003 End of Support Looms (CIO.com, 25 September 2014)", "source_url": "https://www.cio.com/article/250557/windows-server-2003-end-of-support-loom.html", "source_type": "secondary", "source_access": "open", "published_at": "2014-09-25", "accessed_at": "2026-10-14", "quote": "Mayer says an estimated 39 percent of all installed Microsoft Server operating systems are the 2003 edition. That's about 24 million servers, of which about 9.4 million are in the U.S.", "locator": "Paragraph after the link 'Microsoft urges customers to ditch XP, Office 2003'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record showing two drifts in one sentence: instances become servers (Microsoft's figure was 24 million instances on 12 million physical servers) and North America becomes the US. Attributed to Insight's David Mayer, not to Microsoft.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cio-2014-09-25-restates-24-million-instances-as-servers-and-9-4-million-in-us", "citation_text": "24 million servers, 9.4 million of them in the US, were running Windows Server 2003 in September 2014, CIO.com reported from Insight, where Redmond's report of the same figures had 24 million instances and 9.4 million in North America (CIO.com, 2014). Source: CIO.com, \"Windows Server 2003 End of Support Looms (CIO.com, 25 September 2014)\" (https://www.cio.com/article/250557/windows-server-2003-end-of-support-loom.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cio-2014-09-25-restates-24-million-instances-as-servers-and-9-4-million-in-us." }, { "id": "redmond-2015-06-30-cloudphysics-server-2003-18pct-of-vm-instances", "family": "eol-history-2003-2008", "statement": "18% of virtual machine instances in CloudPhysics' sample of VMware datacenters ran Windows Server 2003 in June 2015, weeks before its end of support, and CloudPhysics projected some use until mid-2018 (CloudPhysics via Redmond, 2015).", "short_statement": null, "short_refs": null, "value": 18, "unit": "% of virtual machine instances in VMware vSphere datacenters monitored by CloudPhysics", "display_value": "18%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (CloudPhysics customers' VMware datacenters)", "period": "2015-06", "population": "Virtual machines in thousands of VMware vSphere datacenters sending data to CloudPhysics, trend data June 2013 to June 2015", "sample_n": null, "publisher": "Redmond Magazine (reporting a CloudPhysics announcement)", "source_title": "Windows Server 2003 Use Expected To Linger until 2018 (Redmond Magazine, Kurt Mackie, 30 June 2015)", "source_url": "https://redmondmag.com/articles/2015/06/30/windows-server-2003-survey.aspx", "source_type": "secondary", "source_access": "open", "published_at": "2015-06-30", "accessed_at": "2026-10-14", "quote": "Currently, one in five (18 percent) virtual machine instances in datacenters are running Windows Server 2003, according an announcement by CloudPhysics.", "locator": "Fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "eol-deadline-share-still-running-instances", "history": [], "notes": "Vendor telemetry (CloudPhysics, VMware analytics) reported by trade press; CloudPhysics' own announcement not fetched. VMs only, so physical Server 2003 boxes are excluded. Same report: Windows Server 2012 (19%) overtook 2003 only in May 2015; Windows Server 2008 was 63% of Windows Server VMs. RCP ran the same text on 1 July 2015. A year later Spiceworks found 17.9% of servers and VMs on Server 2003. Source title taken from RCP's headline wording; check at merge if displayed.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#redmond-2015-06-30-cloudphysics-server-2003-18pct-of-vm-instances", "citation_text": "18% of virtual machine instances in CloudPhysics' sample of VMware datacenters ran Windows Server 2003 in June 2015, weeks before its end of support, and CloudPhysics projected some use until mid-2018 (CloudPhysics via Redmond, 2015). Source: Redmond Magazine (reporting a CloudPhysics announcement), \"Windows Server 2003 Use Expected To Linger until 2018 (Redmond Magazine, Kurt Mackie, 30 June 2015)\" (https://redmondmag.com/articles/2015/06/30/windows-server-2003-survey.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#redmond-2015-06-30-cloudphysics-server-2003-18pct-of-vm-instances." }, { "id": "theregister-2014-05-02-hp-server-2003-11-million-systems", "family": "eol-history-2003-2008", "statement": "11 million systems were running Windows Server 2003 in May 2014, 438 days before its end of support, by HP's estimate (HP via The Register, 2014).", "short_statement": null, "short_refs": null, "value": 11000000, "unit": "systems running Windows Server 2003 (HP estimate)", "display_value": "11 million", "display_label": "", "display_hook": null, "row_label": "HP via The Register, May 2014: systems", "publisher_short": null, "geography": "Worldwide", "period": "2014-05", "population": "Servers running Windows Server 2003 worldwide (HP estimate; method not published)", "sample_n": null, "publisher": "The Register (reporting HP)", "source_title": "'25,000 Windows Server 2003 boxes' must be upgraded A DAY to meet OS support death date (The Register, 2 May 2014)", "source_url": "https://www.theregister.com/off-prem/2014/05/02/25000-windows-server-2003-boxes-must-be-upgraded-a-day-to-meet-os-support-death-date/1284786", "source_type": "secondary", "source_access": "open", "published_at": "2014-05-02", "accessed_at": "2026-10-14", "quote": "About 11 million systems are running Windows Server 2003, according to HP estimates - some 438 days before Microsoft pulls down the shutters on support for the OS.", "locator": "First paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "HP's Bill Veghte: 'There are 11 million servers in the market today running Windows 2003.' The '11 million' claim traces to HP (May 2014), repeated by HP at WPC in July 2014 (ChannelBuzz) and as 11.7 million by CRN. No HP press release with the figure was found (HP's 2014 newsroom snapshots returned 'Internet Archive temporarily offline' to the earlier collector). Gartner put the count at 8 million in November 2014.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-05-02-hp-server-2003-11-million-systems", "citation_text": "11 million systems were running Windows Server 2003 in May 2014, 438 days before its end of support, by HP's estimate (HP via The Register, 2014). Source: The Register (reporting HP), \"'25,000 Windows Server 2003 boxes' must be upgraded A DAY to meet OS support death date (The Register, 2 May 2014)\" (https://www.theregister.com/off-prem/2014/05/02/25000-windows-server-2003-boxes-must-be-upgraded-a-day-to-meet-os-support-death-date/1284786). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-05-02-hp-server-2003-11-million-systems." }, { "id": "theregister-2014-05-02-derived-25000-server-2003-upgrades-a-day", "family": "eol-history-2003-2008", "statement": "25,000 Windows Server 2003 systems a day would have needed upgrading from May 2014 to clear HP's 11 million estimate before end of support, The Register calculated (The Register, 2014).", "short_statement": null, "short_refs": null, "value": 25000, "unit": "systems per day (derived by The Register)", "display_value": "25,000 a day", "display_label": "", "display_hook": null, "row_label": "The Register's arithmetic, May 2014: upgrades a day needed", "publisher_short": null, "geography": "Worldwide", "period": "2014-05", "population": "HP's estimate of 11 million Windows Server 2003 systems divided by the 438 days left", "sample_n": null, "publisher": "The Register", "source_title": "'25,000 Windows Server 2003 boxes' must be upgraded A DAY to meet OS support death date (The Register, 2 May 2014)", "source_url": "https://www.theregister.com/off-prem/2014/05/02/25000-windows-server-2003-boxes-must-be-upgraded-a-day-to-meet-os-support-death-date/1284786", "source_type": "secondary", "source_access": "open", "published_at": "2014-05-02", "accessed_at": "2026-10-14", "quote": "That means more than 25,000 systems a day, starting right now, need to be upgraded to continue receiving crucial updates past the cutoff date, assuming HP's guesstimate are correct.", "locator": "Second paragraph", "derived": true, "formula": "11,000,000 systems / 438 days = 25,114 per day (The Register's arithmetic)", "headline": false, "series": "", "history": [], "notes": "Arithmetic by The Register on HP's estimate. In July 2014 The Register put the European share at nearly 7,400 a day (2.7 million over a year).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-05-02-derived-25000-server-2003-upgrades-a-day", "citation_text": "25,000 Windows Server 2003 systems a day would have needed upgrading from May 2014 to clear HP's 11 million estimate before end of support, The Register calculated (The Register, 2014). Source: The Register, \"'25,000 Windows Server 2003 boxes' must be upgraded A DAY to meet OS support death date (The Register, 2 May 2014)\" (https://www.theregister.com/off-prem/2014/05/02/25000-windows-server-2003-boxes-must-be-upgraded-a-day-to-meet-os-support-death-date/1284786). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-05-02-derived-25000-server-2003-upgrades-a-day." }, { "id": "theregister-2014-07-14-hp-server-2003-2-7-million-servers-europe", "family": "eol-history-2003-2008", "statement": "2.7 million servers in Europe were running Windows Server 2003 in July 2014, a year before its end of support, by HP's estimate (HP via The Register, 2014).", "short_statement": null, "short_refs": null, "value": 2700000, "unit": "servers running Windows Server 2003 in Europe (HP estimate)", "display_value": "2.7 million", "display_label": "", "display_hook": null, "row_label": "HP via The Register, July 2014: servers in Europe", "publisher_short": null, "geography": "Europe", "period": "2014-07", "population": "Servers running Windows Server 2003 in Europe (HP estimate; method not published)", "sample_n": null, "publisher": "The Register (reporting HP)", "source_title": "July 14 2015, Tuesday: No more support for Windows Server 2003. Good luck (The Register, 14 July 2014)", "source_url": "https://www.theregister.com/off-prem/2014/07/14/july-14-2015-tuesday-no-more-support-for-windows-server-2003-good-luck/1147918", "source_type": "secondary", "source_access": "open", "published_at": "2014-07-14", "accessed_at": "2026-10-14", "quote": "Bill Veghte, exec veep and GM for HP's Enterprise Group, has now told The Channel that some 2.7 million servers in Europe are running on the operating system that he launched when at Microsoft all those years ago.", "locator": "Fifth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Same 2.7 million figure appears in Bit9's March 2015 estimate of servers left unprotected worldwide, an unrelated calculation.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-07-14-hp-server-2003-2-7-million-servers-europe", "citation_text": "2.7 million servers in Europe were running Windows Server 2003 in July 2014, a year before its end of support, by HP's estimate (HP via The Register, 2014). Source: The Register (reporting HP), \"July 14 2015, Tuesday: No more support for Windows Server 2003. Good luck (The Register, 14 July 2014)\" (https://www.theregister.com/off-prem/2014/07/14/july-14-2015-tuesday-no-more-support-for-windows-server-2003-good-luck/1147918). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-07-14-hp-server-2003-2-7-million-servers-europe." }, { "id": "channelbuzz-2014-07-14-hp-server-2003-11-million-servers-10-billion-usd-opportunity", "family": "eol-history-2003-2008", "statement": "11 million servers ran Windows Server 2003 in July 2014, about a year's worth of server shipments and a $10 billion opportunity, HP said as it launched a joint migration programme with Microsoft at WPC 2014 (HP via ChannelBuzz, 2014).", "short_statement": null, "short_refs": null, "value": 11000000, "unit": "servers running Windows Server 2003 (HP estimate)", "display_value": "11 million", "display_label": "", "display_hook": null, "row_label": "HP via ChannelBuzz, July 2014: servers", "publisher_short": null, "geography": "Worldwide", "period": "2014-07", "population": "Servers running Windows Server 2003 worldwide (HP estimate)", "sample_n": null, "publisher": "ChannelBuzz.ca (reporting HP)", "source_title": "HP, Microsoft joint initiative to capture Windows Server 2003 transition (ChannelBuzz.ca, 14 July 2014)", "source_url": "https://channelbuzz.ca/2014/07/hp-microsoft-joint-initiative-capture-windows-server-2003-transition-10102/", "source_type": "secondary", "source_access": "open", "published_at": "2014-07-14", "accessed_at": "2026-10-14", "quote": "\"There are 11 million servers out there with Windows Server 2003 on them today\" he said. \"It's basically the equivalent of an entire year's worth of server volume, a ten billion dollar opportunity.", "locator": "Fourth paragraph (Doug Oathout, HP vice president of global marketing, SMB and alliances)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "HP also said 'The average time for a migration is 200 days'. CRN's report of the same launch says 11.7 million servers. Data Center Knowledge's report (18 July 2014) gives the $10 billion but no server count.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#channelbuzz-2014-07-14-hp-server-2003-11-million-servers-10-billion-usd-opportunity", "citation_text": "11 million servers ran Windows Server 2003 in July 2014, about a year's worth of server shipments and a $10 billion opportunity, HP said as it launched a joint migration programme with Microsoft at WPC 2014 (HP via ChannelBuzz, 2014). Source: ChannelBuzz.ca (reporting HP), \"HP, Microsoft joint initiative to capture Windows Server 2003 transition (ChannelBuzz.ca, 14 July 2014)\" (https://channelbuzz.ca/2014/07/hp-microsoft-joint-initiative-capture-windows-server-2003-transition-10102/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#channelbuzz-2014-07-14-hp-server-2003-11-million-servers-10-billion-usd-opportunity." }, { "id": "crn-2014-07-14-hp-server-2003-11-7-million-servers", "family": "eol-history-2003-2008", "statement": "11.7 million servers were still running Windows Server 2003 in July 2014, CRN reported as HP and Microsoft launched their joint migration programme for partners (CRN, 2014).", "short_statement": null, "short_refs": null, "value": 11700000, "unit": "servers running Windows Server 2003 (as reported)", "display_value": "11.7 million", "display_label": "", "display_hook": null, "row_label": "CRN, July 2014: servers", "publisher_short": null, "geography": "Worldwide", "period": "2014-07", "population": "Servers running Windows Server 2003 worldwide (HP figure as reported by CRN)", "sample_n": null, "publisher": "CRN (reposted on the OpenText Cybersecurity Community)", "source_title": "HP, Microsoft Roll Out Partner Program For Windows Server 2003 Upgrade Opportunity (CRN, Steve Burke, 14 July 2014; repost)", "source_url": "https://community.opentextcybersecurity.com/tech-talk-7/hp-microsoft-roll-out-partner-program-for-windows-server-2003-upgrade-opportunity-127720", "source_type": "secondary", "source_access": "open", "published_at": "2014-07-14", "accessed_at": "2026-10-14", "quote": "HP is engaging solution providers to upgrade a big chunk of 11.7 million servers still running the 11-year old OS", "locator": "Standfirst of the reposted CRN article", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Fetched from a community repost of CRN's article (excerpt with 'Full Article' link); CRN's original page not fetched. Differs from HP's own '11 million' (ChannelBuzz, same day).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#crn-2014-07-14-hp-server-2003-11-7-million-servers", "citation_text": "11.7 million servers were still running Windows Server 2003 in July 2014, CRN reported as HP and Microsoft launched their joint migration programme for partners (CRN, 2014). Source: CRN (reposted on the OpenText Cybersecurity Community), \"HP, Microsoft Roll Out Partner Program For Windows Server 2003 Upgrade Opportunity (CRN, Steve Burke, 14 July 2014; repost)\" (https://community.opentextcybersecurity.com/tech-talk-7/hp-microsoft-roll-out-partner-program-for-windows-server-2003-upgrade-opportunity-127720). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#crn-2014-07-14-hp-server-2003-11-7-million-servers." }, { "id": "computerworld-2014-07-31-dell-up-to-12-million-server-2003-servers", "family": "eol-history-2003-2008", "statement": "Up to 12 million Windows Server 2003 servers could still be in use in July 2014, Dell's server general manager Forrest Norrod estimated, expecting the deadline to lift server sales in 2015 (Dell via Computerworld, 2014).", "short_statement": null, "short_refs": null, "value": 12000000, "unit": "servers running Windows Server 2003 (Dell estimate, upper bound)", "display_value": "up to 12 million", "display_label": "", "display_hook": null, "row_label": "Dell via Computerworld, July 2014: servers", "publisher_short": null, "geography": "Worldwide", "period": "2014-07", "population": "Servers running Windows Server 2003 worldwide (Dell estimate; method not published)", "sample_n": null, "publisher": "Computerworld (IDG News Service, reporting Dell)", "source_title": "End for Windows Server 2003 support could push sales in '15 (Computerworld, Agam Shah, 31 July 2014)", "source_url": "https://www.computerworld.com/article/1525258/end-for-windows-server-2003-support-could-push-sales-in-15.html", "source_type": "secondary", "source_access": "open", "published_at": "2014-07-31", "accessed_at": "2026-10-14", "quote": "Windows Server is the dominant OS and there could be up to 12 million Windows Server 2003 servers now in use, Norrod said.", "locator": "Fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Same IDG story ran in PCWorld and TechCentral.ie. No Dell press release with the figure was found.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#computerworld-2014-07-31-dell-up-to-12-million-server-2003-servers", "citation_text": "Up to 12 million Windows Server 2003 servers could still be in use in July 2014, Dell's server general manager Forrest Norrod estimated, expecting the deadline to lift server sales in 2015 (Dell via Computerworld, 2014). Source: Computerworld (IDG News Service, reporting Dell), \"End for Windows Server 2003 support could push sales in '15 (Computerworld, Agam Shah, 31 July 2014)\" (https://www.computerworld.com/article/1525258/end-for-windows-server-2003-support-could-push-sales-in-15.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#computerworld-2014-07-31-dell-up-to-12-million-server-2003-servers." }, { "id": "theregister-2014-11-27-gartner-8-million-server-2003-servers", "family": "eol-history-2003-2008", "statement": "8 million servers running Windows Server 2003 were still in use worldwide in November 2014, by Gartner's estimate, which expected two-thirds to three-quarters to be replaced by the end of 2015 (Gartner via The Register, 2014).", "short_statement": null, "short_refs": null, "value": 8000000, "unit": "servers running Windows Server 2003 (Gartner estimate)", "display_value": "8 million", "display_label": "", "display_hook": null, "row_label": "Gartner via The Register, November 2014: servers", "publisher_short": null, "geography": "Worldwide", "period": "2014-11", "population": "Servers running Windows Server 2003 worldwide (Gartner estimate; method not published)", "sample_n": null, "publisher": "The Register (reporting Gartner)", "source_title": "A whopping 8 million Windows Server 2003 systems still out there (The Register, 27 November 2014)", "source_url": "https://www.theregister.com/off-prem/2014/11/27/a-whopping-8-million-windows-server-2003-systems-still-out-there/1520249", "source_type": "secondary", "source_access": "open", "published_at": "2014-11-27", "accessed_at": "2026-10-14", "quote": "According to Gartner, some eight million servers running the OS are out there globally, and it expects between two-thirds to three-quarters to be replaced by the end of next year.", "locator": "Eighth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Analyst estimate (Gartner research director Errol Rasit). Counts physical systems, so not comparable with Microsoft's instance counts (24 million instances on 12 million physical servers, July 2014). Gartner's own note not fetched. Source title follows the article URL slug.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-11-27-gartner-8-million-server-2003-servers", "citation_text": "8 million servers running Windows Server 2003 were still in use worldwide in November 2014, by Gartner's estimate, which expected two-thirds to three-quarters to be replaced by the end of 2015 (Gartner via The Register, 2014). Source: The Register (reporting Gartner), \"A whopping 8 million Windows Server 2003 systems still out there (The Register, 27 November 2014)\" (https://www.theregister.com/off-prem/2014/11/27/a-whopping-8-million-windows-server-2003-systems-still-out-there/1520249). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-11-27-gartner-8-million-server-2003-servers." }, { "id": "theregister-2014-11-27-gartner-5-5-million-server-2003-systems-replaced", "family": "eol-history-2003-2008", "statement": "5.5 million Windows Server 2003 systems would be replaced with other systems, Gartner expected in November 2014, fewer than the 8 million in use because customers would virtualise (Gartner via The Register, 2014).", "short_statement": null, "short_refs": null, "value": 5500000, "unit": "systems to be replaced (Gartner forecast)", "display_value": "5.5 million", "display_label": "", "display_hook": null, "row_label": "Gartner, November 2014: systems to be replaced", "publisher_short": null, "geography": "Worldwide", "period": "2014-11", "population": "Servers running Windows Server 2003 worldwide (Gartner forecast)", "sample_n": null, "publisher": "The Register (reporting Gartner)", "source_title": "A whopping 8 million Windows Server 2003 systems still out there (The Register, 27 November 2014)", "source_url": "https://www.theregister.com/off-prem/2014/11/27/a-whopping-8-million-windows-server-2003-systems-still-out-there/1520249", "source_type": "secondary", "source_access": "open", "published_at": "2014-11-27", "accessed_at": "2026-10-14", "quote": "But only 5.5 million systems will be replaced with other systems as customers choose to virtualise, said Errol Rasit, research director at the market watcher.", "locator": "Ninth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Analyst forecast; the same article reports Tech Data's CEO saying refresh activity had not yet shown up.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-11-27-gartner-5-5-million-server-2003-systems-replaced", "citation_text": "5.5 million Windows Server 2003 systems would be replaced with other systems, Gartner expected in November 2014, fewer than the 8 million in use because customers would virtualise (Gartner via The Register, 2014). Source: The Register (reporting Gartner), \"A whopping 8 million Windows Server 2003 systems still out there (The Register, 27 November 2014)\" (https://www.theregister.com/off-prem/2014/11/27/a-whopping-8-million-windows-server-2003-systems-still-out-there/1520249). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-11-27-gartner-5-5-million-server-2003-systems-replaced." }, { "id": "redmond-2014-09-18-gartner-1500-usd-per-server-per-year-to-keep-server-2003", "family": "eol-history-2003-2008", "statement": "$1,500 per server per year was the budget Gartner advised for organisations planning to keep running Windows Server 2003 past its July 2015 deadline, as cited by Insight Enterprises in September 2014 (Gartner via Redmond, 2014).", "short_statement": null, "short_refs": null, "value": 1500, "unit": "USD per server per year (Gartner budgeting guidance)", "display_value": "$1,500", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2014", "population": "Servers kept on Windows Server 2003 after end of support (Gartner guidance as cited)", "sample_n": null, "publisher": "Redmond Magazine (Insight Enterprises citing Gartner)", "source_title": "Prepare for Windows Server 2003's End of Support (Redmond Magazine, 18 September 2014)", "source_url": "https://redmondmag.com/articles/2014/09/18/server-2003-end-of-support.aspx", "source_type": "secondary", "source_access": "open", "published_at": "2014-09-18", "accessed_at": "2026-10-14", "quote": "Gartner put out a brief a few months back and they said that organizations that plan to continue to run [Windows Server] 2003 past the deadline should budget $1,500 per year per server.", "locator": "Interview with David Mayer, Insight Enterprises, answer on lessons from Windows XP", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Second-hand: a reseller quoting a Gartner brief that was not fetched (Gartner research is paywalled). Treat as unverified at Gartner. Same article: Microsoft released 37 critical updates for Server 2003 in 2013; Insight's customers with 100+ servers faced projects of 3 to 18 months.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#redmond-2014-09-18-gartner-1500-usd-per-server-per-year-to-keep-server-2003", "citation_text": "$1,500 per server per year was the budget Gartner advised for organisations planning to keep running Windows Server 2003 past its July 2015 deadline, as cited by Insight Enterprises in September 2014 (Gartner via Redmond, 2014). Source: Redmond Magazine (Insight Enterprises citing Gartner), \"Prepare for Windows Server 2003's End of Support (Redmond Magazine, 18 September 2014)\" (https://redmondmag.com/articles/2014/09/18/server-2003-end-of-support.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#redmond-2014-09-18-gartner-1500-usd-per-server-per-year-to-keep-server-2003." }, { "id": "theregister-2014-07-14-appzero-62pct-had-no-plan-for-server-2003", "family": "eol-history-2003-2008", "statement": "62% of customers had no plan to upgrade or migrate from Windows Server 2003, or did not know its support was ending, in AppZero's survey at the start of 2014 (AppZero via The Register, 2014).", "short_statement": null, "short_refs": null, "value": 62, "unit": "% of customers surveyed by AppZero", "display_value": "62%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated", "period": "2014-01", "population": "Customers surveyed by AppZero, a Microsoft partner, at the start of 2014 (sample not stated)", "sample_n": null, "publisher": "The Register (reporting AppZero)", "source_title": "July 14 2015, Tuesday: No more support for Windows Server 2003. Good luck (The Register, 14 July 2014)", "source_url": "https://www.theregister.com/off-prem/2014/07/14/july-14-2015-tuesday-no-more-support-for-windows-server-2003-good-luck/1147918", "source_type": "secondary", "source_access": "open", "published_at": "2014-07-14", "accessed_at": "2026-10-14", "quote": "According to a survey by Microsoft partner App Zero at the start of this year, 62 per cent of customers didn't have a plan to upgrade or migrate from Windows Server 2003 or didn't know end of support was coming.", "locator": "Eleventh paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor survey (AppZero sells application migration tools); sample size and method not given; AppZero's own release not fetched.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-07-14-appzero-62pct-had-no-plan-for-server-2003", "citation_text": "62% of customers had no plan to upgrade or migrate from Windows Server 2003, or did not know its support was ending, in AppZero's survey at the start of 2014 (AppZero via The Register, 2014). Source: The Register (reporting AppZero), \"July 14 2015, Tuesday: No more support for Windows Server 2003. Good luck (The Register, 14 July 2014)\" (https://www.theregister.com/off-prem/2014/07/14/july-14-2015-tuesday-no-more-support-for-windows-server-2003-good-luck/1147918). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-07-14-appzero-62pct-had-no-plan-for-server-2003." }, { "id": "bit9-2015-03-25-server-2003-30pct-enterprises-plan-to-keep-running", "family": "eol-history-2003-2008", "statement": "30% of US and UK enterprises planned to keep running Windows Server 2003 after its 14 July 2015 deadline, in Bit9 + Carbon Black's February 2015 survey of 500 IT leaders (Bit9 + Carbon Black, 2015).", "short_statement": null, "short_refs": null, "value": 30, "unit": "% of enterprises surveyed", "display_value": "30%", "display_label": "500 US and UK enterprises, February 2015 (Bit9 + Carbon Black)", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United States and United Kingdom", "period": "2015-02", "population": "IT leaders at 500 medium and large enterprises (at least 500 employees) in the US and UK, surveyed by Bit9 + Carbon Black in February 2015", "sample_n": 500, "publisher": "Bit9 + Carbon Black (press release published by Dark Reading)", "source_title": "Windows Server 2003 End-of-Life Survey Finds Nearly One in Three Companies Will Miss Deadline, Leaving Nearly 3 Million Servers Vulnerable to Breach (Bit9 + Carbon Black press release, 25 March 2015)", "source_url": "https://www.darkreading.com/vulnerabilities-threats/windows-server-2003-end-of-life-survey-finds-nearly-one-in-three-companies-will-miss-deadline-leaving-nearly-3-million-servers-vulnerable-to-breach", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-25", "accessed_at": "2026-10-14", "quote": "Nearly one in three enterprises (30 percent) plan to continue to run WS2K3 after the July 14 deadline, leaving an estimated 2.7 million servers unprotected", "locator": "Key findings, first bullet", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Security-vendor survey (Bit9 + Carbon Black sold application whitelisting for unpatched servers); the press release is carried verbatim on Dark Reading. Copies on broadcom.com and vmware.com returned no text. UK sub-sample (153 organisations already running Server 2003): 68% would keep using it past end of life (DatacenterDynamics, 30 April 2015).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bit9-2015-03-25-server-2003-30pct-enterprises-plan-to-keep-running", "citation_text": "30% of US and UK enterprises planned to keep running Windows Server 2003 after its 14 July 2015 deadline, in Bit9 + Carbon Black's February 2015 survey of 500 IT leaders (Bit9 + Carbon Black, 2015). Source: Bit9 + Carbon Black (press release published by Dark Reading), \"Windows Server 2003 End-of-Life Survey Finds Nearly One in Three Companies Will Miss Deadline, Leaving Nearly 3 Million Servers Vulnerable to Breach (Bit9 + Carbon Black press release, 25 March 2015)\" (https://www.darkreading.com/vulnerabilities-threats/windows-server-2003-end-of-life-survey-finds-nearly-one-in-three-companies-will-miss-deadline-leaving-nearly-3-million-servers-vulnerable-to-breach). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bit9-2015-03-25-server-2003-30pct-enterprises-plan-to-keep-running." }, { "id": "bit9-2015-03-25-server-2003-2-7-million-servers-unprotected-estimate", "family": "eol-history-2003-2008", "statement": "2.7 million servers would be left unprotected after Windows Server 2003's 14 July 2015 deadline, Bit9 + Carbon Black estimated from its survey and a base of about 9 million systems still in use (Bit9 + Carbon Black, 2015).", "short_statement": null, "short_refs": null, "value": 2700000, "unit": "servers (vendor estimate)", "display_value": "2.7 million", "display_label": "", "display_hook": null, "row_label": "Bit9 + Carbon Black: servers left unprotected", "publisher_short": null, "geography": "Worldwide (extrapolated)", "period": "2015-02", "population": "Windows Server 2003 systems worldwide (Bit9's base of about 9 million, times the 30% planning to stay)", "sample_n": null, "publisher": "Bit9 + Carbon Black (press release published by Dark Reading)", "source_title": "Windows Server 2003 End-of-Life Survey Finds Nearly One in Three Companies Will Miss Deadline, Leaving Nearly 3 Million Servers Vulnerable to Breach (Bit9 + Carbon Black press release, 25 March 2015)", "source_url": "https://www.darkreading.com/vulnerabilities-threats/windows-server-2003-end-of-life-survey-finds-nearly-one-in-three-companies-will-miss-deadline-leaving-nearly-3-million-servers-vulnerable-to-breach", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-25", "accessed_at": "2026-10-14", "quote": "An estimated 2.7 million servers—potentially containing hundreds of millions of files—will be unprotected after July 14, 2015, the end-of-life deadline, according to the survey Bit9 + Carbon Black conducted in February 2015.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Security-vendor survey (Bit9 + Carbon Black sold application whitelisting for unpatched servers); the press release is carried verbatim on Dark Reading. Copies on broadcom.com and vmware.com returned no text. Extrapolation: SecurityWeek (2015) explains it as 30% of 'roughly 9 million machines'. The 9 million base is itself unsourced (separate record).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bit9-2015-03-25-server-2003-2-7-million-servers-unprotected-estimate", "citation_text": "2.7 million servers would be left unprotected after Windows Server 2003's 14 July 2015 deadline, Bit9 + Carbon Black estimated from its survey and a base of about 9 million systems still in use (Bit9 + Carbon Black, 2015). Source: Bit9 + Carbon Black (press release published by Dark Reading), \"Windows Server 2003 End-of-Life Survey Finds Nearly One in Three Companies Will Miss Deadline, Leaving Nearly 3 Million Servers Vulnerable to Breach (Bit9 + Carbon Black press release, 25 March 2015)\" (https://www.darkreading.com/vulnerabilities-threats/windows-server-2003-end-of-life-survey-finds-nearly-one-in-three-companies-will-miss-deadline-leaving-nearly-3-million-servers-vulnerable-to-breach). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bit9-2015-03-25-server-2003-2-7-million-servers-unprotected-estimate." }, { "id": "bit9-2015-03-25-server-2003-about-9-million-systems-still-in-use", "family": "eol-history-2003-2008", "statement": "Approximately 9 million Windows Server 2003 systems were still in use in March 2015, four months before its end of support, by Bit9 + Carbon Black's unsourced estimate (Bit9 + Carbon Black, 2015).", "short_statement": null, "short_refs": null, "value": 9000000, "unit": "systems (vendor estimate, unsourced)", "display_value": "about 9 million", "display_label": "", "display_hook": null, "row_label": "Bit9 + Carbon Black, March 2015: systems (unsourced)", "publisher_short": null, "geography": "Worldwide", "period": "2015-03", "population": "Windows Server 2003 systems worldwide (no source or method given)", "sample_n": null, "publisher": "Bit9 + Carbon Black (press release published by Dark Reading)", "source_title": "Windows Server 2003 End-of-Life Survey Finds Nearly One in Three Companies Will Miss Deadline, Leaving Nearly 3 Million Servers Vulnerable to Breach (Bit9 + Carbon Black press release, 25 March 2015)", "source_url": "https://www.darkreading.com/vulnerabilities-threats/windows-server-2003-end-of-life-survey-finds-nearly-one-in-three-companies-will-miss-deadline-leaving-nearly-3-million-servers-vulnerable-to-breach", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-25", "accessed_at": "2026-10-14", "quote": "There are approximately 9 million WS2K3 systems still in use.", "locator": "Final paragraph before 'About Bit9 + Carbon Black'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Security-vendor survey (Bit9 + Carbon Black sold application whitelisting for unpatched servers); the press release is carried verbatim on Dark Reading. Copies on broadcom.com and vmware.com returned no text. No source given. Sits between Gartner's 8 million (November 2014) and HP's 11 million (May 2014).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bit9-2015-03-25-server-2003-about-9-million-systems-still-in-use", "citation_text": "Approximately 9 million Windows Server 2003 systems were still in use in March 2015, four months before its end of support, by Bit9 + Carbon Black's unsourced estimate (Bit9 + Carbon Black, 2015). Source: Bit9 + Carbon Black (press release published by Dark Reading), \"Windows Server 2003 End-of-Life Survey Finds Nearly One in Three Companies Will Miss Deadline, Leaving Nearly 3 Million Servers Vulnerable to Breach (Bit9 + Carbon Black press release, 25 March 2015)\" (https://www.darkreading.com/vulnerabilities-threats/windows-server-2003-end-of-life-survey-finds-nearly-one-in-three-companies-will-miss-deadline-leaving-nearly-3-million-servers-vulnerable-to-breach). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bit9-2015-03-25-server-2003-about-9-million-systems-still-in-use." }, { "id": "bit9-2015-03-25-server-2003-57pct-did-not-know-deadline", "family": "eol-history-2003-2008", "statement": "57% of US and UK enterprises did not know when Windows Server 2003's end-of-life deadline was, four months before it, in Bit9 + Carbon Black's February 2015 survey of 500 IT leaders (Bit9 + Carbon Black, 2015).", "short_statement": null, "short_refs": null, "value": 57, "unit": "% of enterprises surveyed", "display_value": "57%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United States and United Kingdom", "period": "2015-02", "population": "IT leaders at 500 medium and large enterprises (at least 500 employees) in the US and UK, surveyed by Bit9 + Carbon Black in February 2015", "sample_n": 500, "publisher": "Bit9 + Carbon Black (press release published by Dark Reading)", "source_title": "Windows Server 2003 End-of-Life Survey Finds Nearly One in Three Companies Will Miss Deadline, Leaving Nearly 3 Million Servers Vulnerable to Breach (Bit9 + Carbon Black press release, 25 March 2015)", "source_url": "https://www.darkreading.com/vulnerabilities-threats/windows-server-2003-end-of-life-survey-finds-nearly-one-in-three-companies-will-miss-deadline-leaving-nearly-3-million-servers-vulnerable-to-breach", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-03-25", "accessed_at": "2026-10-14", "quote": "More than half of enterprises (57 percent) do not know when the end of life deadline is", "locator": "Key findings, second bullet", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Security-vendor survey (Bit9 + Carbon Black sold application whitelisting for unpatched servers); the press release is carried verbatim on Dark Reading. Copies on broadcom.com and vmware.com returned no text. Third bullet: 14% of enterprises had no upgrade plan for Server 2003.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bit9-2015-03-25-server-2003-57pct-did-not-know-deadline", "citation_text": "57% of US and UK enterprises did not know when Windows Server 2003's end-of-life deadline was, four months before it, in Bit9 + Carbon Black's February 2015 survey of 500 IT leaders (Bit9 + Carbon Black, 2015). Source: Bit9 + Carbon Black (press release published by Dark Reading), \"Windows Server 2003 End-of-Life Survey Finds Nearly One in Three Companies Will Miss Deadline, Leaving Nearly 3 Million Servers Vulnerable to Breach (Bit9 + Carbon Black press release, 25 March 2015)\" (https://www.darkreading.com/vulnerabilities-threats/windows-server-2003-end-of-life-survey-finds-nearly-one-in-three-companies-will-miss-deadline-leaving-nearly-3-million-servers-vulnerable-to-breach). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bit9-2015-03-25-server-2003-57pct-did-not-know-deadline." }, { "id": "dcd-2015-04-30-bit9-uk-68pct-will-keep-server-2003-past-end-of-life", "family": "eol-history-2003-2008", "statement": "68% of 153 UK organisations running Windows Server 2003 would keep using it past its July 2015 end of life, and 38% of those upgrading would miss the deadline, in Bit9 + Carbon Black's survey (Bit9 + Carbon Black via DatacenterDynamics, 2015).", "short_statement": null, "short_refs": null, "value": 68, "unit": "% of UK organisations running Windows Server 2003", "display_value": "68%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United Kingdom", "period": "2015-02", "population": "153 medium and large UK organisations running Windows Server 2003 (UK sub-sample of Bit9 + Carbon Black's February 2015 survey)", "sample_n": 153, "publisher": "DatacenterDynamics (reporting Bit9 + Carbon Black)", "source_title": "Windows Server 2003 deadline threatens British business (DatacenterDynamics, 30 April 2015)", "source_url": "https://www.datacenterdynamics.com/en/news/windows-server-2003-deadline-threatens-british-business/", "source_type": "secondary", "source_access": "open", "published_at": "2015-04-30", "accessed_at": "2026-10-14", "quote": "questioned 153 medium and large UK-based organizations that were running Windows Server 2003, and found that 68 percent would continue using it past the 'end-of-life'.", "locator": "Sixth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor survey reported by trade press; Bit9's UK release not fetched. Same article: 26% would move workloads to the cloud; 10% had no contingency plan.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#dcd-2015-04-30-bit9-uk-68pct-will-keep-server-2003-past-end-of-life", "citation_text": "68% of 153 UK organisations running Windows Server 2003 would keep using it past its July 2015 end of life, and 38% of those upgrading would miss the deadline, in Bit9 + Carbon Black's survey (Bit9 + Carbon Black via DatacenterDynamics, 2015). Source: DatacenterDynamics (reporting Bit9 + Carbon Black), \"Windows Server 2003 deadline threatens British business (DatacenterDynamics, 30 April 2015)\" (https://www.datacenterdynamics.com/en/news/windows-server-2003-deadline-threatens-british-business/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#dcd-2015-04-30-bit9-uk-68pct-will-keep-server-2003-past-end-of-life." }, { "id": "rcp-2015-05-15-softchoice-server-2003-21pct-of-servers", "family": "eol-history-2003-2008", "statement": "21% of about 87,000 client servers scanned by Softchoice between October 2014 and March 2015 still ran Windows Server 2003, four to nine months before its end of support, 7 points fewer than a year earlier (Softchoice via Redmond Channel Partner, 2015).", "short_statement": null, "short_refs": null, "value": 21, "unit": "% of servers scanned by Softchoice's TechCheck service", "display_value": "21%", "display_label": "About 87,000 client servers, October 2014 to March 2015 (Softchoice)", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America (Softchoice clients)", "period": "2014-10/2015-03", "population": "About 87,000 client servers scanned by Softchoice's Windows Server 2003 TechCheck service, October 2014 to March 2015", "sample_n": 87000, "publisher": "Redmond Channel Partner (reporting Softchoice)", "source_title": "Survey: One-Fifth of Servers Still on Windows Server 2003 (Redmond Channel Partner, 15 May 2015)", "source_url": "https://rcpmag.com/articles/2015/05/15/softchoice-survey-windows-server-2003.aspx", "source_type": "secondary", "source_access": "open", "published_at": "2015-05-15", "accessed_at": "2026-10-14", "quote": "used its Windows Server 2003 TechCheck service to gather data from about 87,000 client servers between October 2014 and March 2015. The company found 21 percent of servers still run on Windows Server 2003.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "eol-deadline-share-still-running-instances", "history": [], "notes": "Reseller scan data (Softchoice is a Microsoft reseller and managed service provider in Toronto), reported before Softchoice's own report; Softchoice's report was not found in the Wayback Machine (press-page captures list no 2015 Server 2003 release). Instances measure, closest in kind to Lansweeper's 2023 share for Server 2012.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcp-2015-05-15-softchoice-server-2003-21pct-of-servers", "citation_text": "21% of about 87,000 client servers scanned by Softchoice between October 2014 and March 2015 still ran Windows Server 2003, four to nine months before its end of support, 7 points fewer than a year earlier (Softchoice via Redmond Channel Partner, 2015). Source: Redmond Channel Partner (reporting Softchoice), \"Survey: One-Fifth of Servers Still on Windows Server 2003 (Redmond Channel Partner, 15 May 2015)\" (https://rcpmag.com/articles/2015/05/15/softchoice-survey-windows-server-2003.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcp-2015-05-15-softchoice-server-2003-21pct-of-servers." }, { "id": "rcp-2015-05-15-softchoice-server-2003-28pct-a-year-earlier-derived", "family": "eol-history-2003-2008", "statement": "28% of servers scanned by Softchoice ran Windows Server 2003 a year before its October 2014 to March 2015 scans, implied by Softchoice's 21% being 7 points lower (Softchoice via Redmond Channel Partner, 2015).", "short_statement": null, "short_refs": null, "value": 28, "unit": "% of servers scanned by Softchoice (derived)", "display_value": "28%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America (Softchoice clients)", "period": "2013-10/2014-03", "population": "Client servers scanned by Softchoice in the year-earlier period (sample not stated)", "sample_n": null, "publisher": "Redmond Channel Partner (reporting Softchoice)", "source_title": "Survey: One-Fifth of Servers Still on Windows Server 2003 (Redmond Channel Partner, 15 May 2015)", "source_url": "https://rcpmag.com/articles/2015/05/15/softchoice-survey-windows-server-2003.aspx", "source_type": "secondary", "source_access": "open", "published_at": "2015-05-15", "accessed_at": "2026-10-14", "quote": "The company found 21 percent of servers still run on Windows Server 2003. That's only 7 percentage points down from the year-ago period.", "locator": "Second paragraph", "derived": true, "formula": "21% + 7 percentage points = 28% (year-ago period, as implied by RCP's report)", "headline": false, "series": "eol-deadline-share-still-running-instances", "history": [], "notes": "Derived from the reported change; the year-ago sample size is not given.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcp-2015-05-15-softchoice-server-2003-28pct-a-year-earlier-derived", "citation_text": "28% of servers scanned by Softchoice ran Windows Server 2003 a year before its October 2014 to March 2015 scans, implied by Softchoice's 21% being 7 points lower (Softchoice via Redmond Channel Partner, 2015). Source: Redmond Channel Partner (reporting Softchoice), \"Survey: One-Fifth of Servers Still on Windows Server 2003 (Redmond Channel Partner, 15 May 2015)\" (https://rcpmag.com/articles/2015/05/15/softchoice-survey-windows-server-2003.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcp-2015-05-15-softchoice-server-2003-28pct-a-year-earlier-derived." }, { "id": "rcp-2015-05-15-softchoice-server-2008-66pct-server-2012-12pct", "family": "eol-history-2003-2008", "statement": "66% of the servers Softchoice scanned between October 2014 and March 2015 ran Windows Server 2008 and only 12% Windows Server 2012, as organisations leaving Server 2003 chose 2008 (Softchoice via Redmond Channel Partner, 2015).", "short_statement": null, "short_refs": null, "value": 66, "unit": "% of servers scanned by Softchoice's TechCheck service", "display_value": "66%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America (Softchoice clients)", "period": "2014-10/2015-03", "population": "About 87,000 client servers scanned by Softchoice, October 2014 to March 2015", "sample_n": 87000, "publisher": "Redmond Channel Partner (reporting Softchoice)", "source_title": "Survey: One-Fifth of Servers Still on Windows Server 2003 (Redmond Channel Partner, 15 May 2015)", "source_url": "https://rcpmag.com/articles/2015/05/15/softchoice-survey-windows-server-2003.aspx", "source_type": "secondary", "source_access": "open", "published_at": "2015-05-15", "accessed_at": "2026-10-14", "quote": "Softchoice found that a full 66 percent of the server systems it surveyed run Windows Server 2008, while Windows Server 2012 clocked in at only 12 percent.", "locator": "Eighth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Explains why the 2020 deadline was bigger: in 2015 most servers moved to or stayed on 2008, which lost support four and a half years later. Same article: Softchoice put custom support at '$200,000 or more per year'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcp-2015-05-15-softchoice-server-2008-66pct-server-2012-12pct", "citation_text": "66% of the servers Softchoice scanned between October 2014 and March 2015 ran Windows Server 2008 and only 12% Windows Server 2012, as organisations leaving Server 2003 chose 2008 (Softchoice via Redmond Channel Partner, 2015). Source: Redmond Channel Partner (reporting Softchoice), \"Survey: One-Fifth of Servers Still on Windows Server 2003 (Redmond Channel Partner, 15 May 2015)\" (https://rcpmag.com/articles/2015/05/15/softchoice-survey-windows-server-2003.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcp-2015-05-15-softchoice-server-2008-66pct-server-2012-12pct." }, { "id": "techradar-2015-03-18-restates-spiceworks-60000-usd-budget-as-40000-gbp", "family": "eol-history-2003-2008", "statement": "40,000 pounds was the average Windows Server 2003 migration budget as TechRadar reported Spiceworks' study, converting Spiceworks' $60,000 into sterling and back to about $59,500 (TechRadar, 2015).", "short_statement": null, "short_refs": null, "value": 40000, "unit": "GBP average migration budget (restated)", "display_value": "GBP 40,000", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Spiceworks' January 2015 survey (as restated)", "sample_n": null, "publisher": "TechRadar", "source_title": "Windows Server 2003 end of life presents a $100bn opportunity (TechRadar Pro, 18 March 2015)", "source_url": "https://www.techradar.com/news/computing/servers/windows-server-2003-end-of-life-presents-a-100bn-opportunity-1288754", "source_type": "secondary", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "A report titled \"The Great IT Upgrade\" points out that on average companies have set aside £40,000 (approximately $59,500, or AU$76,800) to be used in migration-related projects.", "locator": "Third paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record: Spiceworks' release gives $60,000. Minor drift, but GBP 40,000 circulates in UK coverage.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techradar-2015-03-18-restates-spiceworks-60000-usd-budget-as-40000-gbp", "citation_text": "40,000 pounds was the average Windows Server 2003 migration budget as TechRadar reported Spiceworks' study, converting Spiceworks' $60,000 into sterling and back to about $59,500 (TechRadar, 2015). Source: TechRadar, \"Windows Server 2003 end of life presents a $100bn opportunity (TechRadar Pro, 18 March 2015)\" (https://www.techradar.com/news/computing/servers/windows-server-2003-end-of-life-presents-a-100bn-opportunity-1288754). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techradar-2015-03-18-restates-spiceworks-60000-usd-budget-as-40000-gbp." }, { "id": "techradar-2015-03-18-unsourced-range-2-6-to-11-million-server-2003-installations", "family": "eol-history-2003-2008", "statement": "2.6 million to 11 million Windows Server 2003 installations were said to remain in November 2014, a range TechRadar printed without a source, its top end matching HP's estimate (TechRadar, 2015).", "short_statement": null, "short_refs": null, "value": null, "unit": "Windows Server 2003 installations (unsourced range)", "display_value": "2.6 million to 11 million", "display_label": "", "display_hook": null, "row_label": "TechRadar, March 2015: installations (no source)", "publisher_short": null, "geography": "Worldwide", "period": "2014-11", "population": "Windows Server 2003 installations worldwide (unsourced)", "sample_n": null, "publisher": "TechRadar", "source_title": "Windows Server 2003 end of life presents a $100bn opportunity (TechRadar Pro, 18 March 2015)", "source_url": "https://www.techradar.com/news/computing/servers/windows-server-2003-end-of-life-presents-a-100bn-opportunity-1288754", "source_type": "secondary", "source_access": "open", "published_at": "2015-03-18", "accessed_at": "2026-10-14", "quote": "At the last check, in November, there were between 2.6 million and 11 million global installations of Windows Server 2003 still in the wild", "locator": "Seventh paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record for the claims in circulation: the 11 million is HP's (May 2014); the 2.6 million has no traced origin. Shows how far estimates of the remaining base diverged (2.6 to 24 million).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techradar-2015-03-18-unsourced-range-2-6-to-11-million-server-2003-installations", "citation_text": "2.6 million to 11 million Windows Server 2003 installations were said to remain in November 2014, a range TechRadar printed without a source, its top end matching HP's estimate (TechRadar, 2015). Source: TechRadar, \"Windows Server 2003 end of life presents a $100bn opportunity (TechRadar Pro, 18 March 2015)\" (https://www.techradar.com/news/computing/servers/windows-server-2003-end-of-life-presents-a-100bn-opportunity-1288754). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techradar-2015-03-18-unsourced-range-2-6-to-11-million-server-2003-installations." }, { "id": "scottish-government-2017-06-foi-17-01556-server-2003-39-of-2200-servers", "family": "eol-history-2003-2008", "statement": "39 servers of the more than 2,200 on the Scottish Government network still ran Windows Server 2003 in June 2017, almost two years after its end of support, with 22 being decommissioned (Scottish Government, 2017).", "short_statement": null, "short_refs": null, "value": 39, "unit": "servers running Windows Server 2003 (of over 2,200)", "display_value": "39 of 2,200+", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Scotland (Scottish Government network, SCOTS)", "period": "2017-06", "population": "Servers on the Scottish Government's network (SCOTS), over 2,200 in total", "sample_n": null, "publisher": "Scottish Government", "source_title": "Systems running on unsupported technologies: FOI release (FOI/17/01556, gov.scot, published 13 July 2017)", "source_url": "https://www.gov.scot/publications/foi-17-01556/", "source_type": "primary", "source_access": "open", "published_at": "2017-07-13", "accessed_at": "2026-10-14", "quote": "I can confirm that of over 2200 servers running in the Scottish Government's Network (SCOTS), 39 servers are running on the Windows 2003 Server platform.", "locator": "Response, first paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Primary public-sector count. 39 of 2,200+ is under 1.8% of servers. The internal review (published 10 August 2017) reported the number down to 35, with seven systems due in August 2017 and almost all by end of 2017. Two UK Attorney General's Office FOI answers (August 2015) only said the information was held by the Scottish Government.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#scottish-government-2017-06-foi-17-01556-server-2003-39-of-2200-servers", "citation_text": "39 servers of the more than 2,200 on the Scottish Government network still ran Windows Server 2003 in June 2017, almost two years after its end of support, with 22 being decommissioned (Scottish Government, 2017). Source: Scottish Government, \"Systems running on unsupported technologies: FOI release (FOI/17/01556, gov.scot, published 13 July 2017)\" (https://www.gov.scot/publications/foi-17-01556/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#scottish-government-2017-06-foi-17-01556-server-2003-39-of-2200-servers." }, { "id": "scottish-government-2017-08-foi-review-server-2003-down-to-35", "family": "eol-history-2003-2008", "statement": "35 Scottish Government servers were still on Windows Server 2003 by late July 2017, down from 39 in June 2017, two years after its end of support (Scottish Government, 2017).", "short_statement": null, "short_refs": null, "value": 35, "unit": "servers running Windows Server 2003", "display_value": "35", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Scotland (Scottish Government network, SCOTS)", "period": "2017-07", "population": "Servers on the Scottish Government's network (SCOTS)", "sample_n": null, "publisher": "Scottish Government", "source_title": "Table and timeframe of outstanding Windows 2003 servers: FOI review (FOI/17/01556 review, gov.scot, published 10 August 2017)", "source_url": "https://www.gov.scot/publications/foi-17-01556-review/", "source_type": "primary", "source_access": "open", "published_at": "2017-08-10", "accessed_at": "2026-10-14", "quote": "the progress in lowering the overall number of legacy servers has reduced from 39 to 35.", "locator": "Final paragraph before the Annex", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Review response dated 28 July 2017; the annex PDF with the decommissioning timetable was not fetched.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#scottish-government-2017-08-foi-review-server-2003-down-to-35", "citation_text": "35 Scottish Government servers were still on Windows Server 2003 by late July 2017, down from 39 in June 2017, two years after its end of support (Scottish Government, 2017). Source: Scottish Government, \"Table and timeframe of outstanding Windows 2003 servers: FOI review (FOI/17/01556 review, gov.scot, published 10 August 2017)\" (https://www.gov.scot/publications/foi-17-01556-review/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#scottish-government-2017-08-foi-review-server-2003-down-to-35." }, { "id": "publictechnology-2018-08-24-comparex-foi-24pct-councils-windows-2000-or-2003-server", "family": "eol-history-2003-2008", "statement": "24% of English councils answering Comparex's April 2018 FOI requests still ran Windows 2000 Server or Windows Server 2003, nearly three years after Server 2003's end of support, and 38% ran SQL Server 2005 (Comparex via PublicTechnology, 2018).", "short_statement": null, "short_refs": null, "value": 24, "unit": "% of responding councils", "display_value": "24%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "England (95 councils asked)", "period": "2018-04", "population": "English councils answering FOI requests sent by Comparex UK in April 2018 to 95 councils (32 London boroughs, 36 metropolitan, 27 county councils)", "sample_n": null, "publisher": "PublicTechnology (reporting Comparex UK FOI requests)", "source_title": "Almost half of councils using unsupported server software, FOI finds (PublicTechnology, 24 August 2018)", "source_url": "https://www.publictechnology.net/2018/08/24/communities-housing-and-planning/almost-half-councils-using-unsupported-server-software-foi-finds/", "source_type": "secondary", "source_access": "open", "published_at": "2018-08-24", "accessed_at": "2026-10-14", "quote": "found that 24% of respondents were running one or both of the 2000 or 2003 editions of the Microsoft tools, while 38% were running the 2005 version.", "locator": "Fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor-commissioned FOI exercise (Comparex is a licensing reseller); number of councils that answered not given. Headline: 46% ran at least one of Windows 2000 Server, Windows Server 2003 or SQL Server 2005.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#publictechnology-2018-08-24-comparex-foi-24pct-councils-windows-2000-or-2003-server", "citation_text": "24% of English councils answering Comparex's April 2018 FOI requests still ran Windows 2000 Server or Windows Server 2003, nearly three years after Server 2003's end of support, and 38% ran SQL Server 2005 (Comparex via PublicTechnology, 2018). Source: PublicTechnology (reporting Comparex UK FOI requests), \"Almost half of councils using unsupported server software, FOI finds (PublicTechnology, 24 August 2018)\" (https://www.publictechnology.net/2018/08/24/communities-housing-and-planning/almost-half-councils-using-unsupported-server-software-foi-finds/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#publictechnology-2018-08-24-comparex-foi-24pct-councils-windows-2000-or-2003-server." }, { "id": "publictechnology-2018-08-24-comparex-foi-94pct-councils-windows-server-2008", "family": "eol-history-2003-2008", "statement": "94% of English councils answering Comparex's April 2018 FOI requests were using Windows Server 2008, 21 months before its January 2020 end of support, and as many ran SQL Server 2008 (Comparex via PublicTechnology, 2018).", "short_statement": null, "short_refs": null, "value": 94, "unit": "% of responding councils (running Windows Server 2008)", "display_value": "94%", "display_label": "Councils answering Comparex FOI requests, April 2018", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "England (95 councils asked)", "period": "2018-04", "population": "English councils answering FOI requests sent by Comparex UK in April 2018 to 95 councils", "sample_n": null, "publisher": "PublicTechnology (reporting Comparex UK FOI requests)", "source_title": "Almost half of councils using unsupported server software, FOI finds (PublicTechnology, 24 August 2018)", "source_url": "https://www.publictechnology.net/2018/08/24/communities-housing-and-planning/almost-half-councils-using-unsupported-server-software-foi-finds/", "source_type": "secondary", "source_access": "open", "published_at": "2018-08-24", "accessed_at": "2026-10-14", "quote": "Some 94% of authorities are using Windows Server 2008, with the same amount running Windows SQL Server 2008.", "locator": "Sixth paragraph", "derived": false, "formula": null, "headline": false, "series": "eol-deadline-share-still-running-organisations", "history": [], "notes": "An organisations measure (any use), comparable in kind with Spiceworks' 'at least one instance' for Server 2003, but a small public-sector population. Vendor-commissioned FOI.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#publictechnology-2018-08-24-comparex-foi-94pct-councils-windows-server-2008", "citation_text": "94% of English councils answering Comparex's April 2018 FOI requests were using Windows Server 2008, 21 months before its January 2020 end of support, and as many ran SQL Server 2008 (Comparex via PublicTechnology, 2018). Source: PublicTechnology (reporting Comparex UK FOI requests), \"Almost half of councils using unsupported server software, FOI finds (PublicTechnology, 24 August 2018)\" (https://www.publictechnology.net/2018/08/24/communities-housing-and-planning/almost-half-councils-using-unsupported-server-software-foi-finds/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#publictechnology-2018-08-24-comparex-foi-94pct-councils-windows-server-2008." }, { "id": "computerworld-2017-05-22-kaspersky-wannacry-98-4pct-windows-7-server-2008-targeted", "family": "eol-history-2003-2008", "statement": "98.4% of the WannaCry detections Kaspersky logged in May 2017 were on Windows 7, with Windows Server 2008 the other platform hit and Windows XP almost absent (Kaspersky via Computerworld, 2017).", "short_statement": null, "short_refs": null, "value": 98.4, "unit": "% of WannaCry detections logged by Kaspersky", "display_value": "98.4%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Kaspersky customers)", "period": "2017-05", "population": "WannaCry detections logged (and blocked) by Kaspersky security software, May 2017", "sample_n": null, "publisher": "Computerworld (reporting Kaspersky data)", "source_title": "No, Windows XP didn't fuel WannaCry (Computerworld, Gregg Keizer, 22 May 2017)", "source_url": "https://www.computerworld.com/article/1681335/no-windows-xp-didnt-fuel-wannacry.html", "source_type": "secondary", "source_access": "open", "published_at": "2017-05-22", "accessed_at": "2026-10-14", "quote": "Rather than take aim at Windows XP, WannaCry targeted Windows 7 and Windows Server 2008, Kaspersky's data showed. The vast majority - 98.4% - had put the crosshairs on Windows 7", "locator": "Fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor telemetry (detections, not infections). SecurityWeek (22 May 2017) gives the Windows 7 x64 share at 60.35% and x86 at 31.72% from Kaspersky's Costin Raiu. Microsoft issued emergency patches on 12-13 May 2017 for platforms in custom support only, including Windows XP and Windows Server 2003 (Computerworld). The NAO's NHS investigation (October 2017) names no Windows Server version: most infected NHS devices were unpatched Windows 7.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#computerworld-2017-05-22-kaspersky-wannacry-98-4pct-windows-7-server-2008-targeted", "citation_text": "98.4% of the WannaCry detections Kaspersky logged in May 2017 were on Windows 7, with Windows Server 2008 the other platform hit and Windows XP almost absent (Kaspersky via Computerworld, 2017). Source: Computerworld (reporting Kaspersky data), \"No, Windows XP didn't fuel WannaCry (Computerworld, Gregg Keizer, 22 May 2017)\" (https://www.computerworld.com/article/1681335/no-windows-xp-didnt-fuel-wannacry.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#computerworld-2017-05-22-kaspersky-wannacry-98-4pct-windows-7-server-2008-targeted." }, { "id": "microsoft-azure-blog-2018-07-12-free-esu-in-azure-three-years-2008", "family": "eol-history-2003-2008", "statement": "3 more years of Extended Security Updates were offered free in Azure for Windows Server 2008 and SQL Server 2008 workloads after their end of support, Microsoft announced in July 2018, 18 months before the Windows Server deadline (Microsoft, 2018).", "short_statement": null, "short_refs": null, "value": 3, "unit": "years of free Extended Security Updates in Azure", "display_value": "3 years", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2018-07", "population": "Windows Server 2008/2008 R2 and SQL Server 2008/2008 R2 workloads rehosted in Azure", "sample_n": null, "publisher": "Microsoft", "source_title": "Announcing new options for SQL Server 2008 and Windows Server 2008 End of Support (Microsoft Azure Blog, Takeshi Numoto, 12 July 2018)", "source_url": "https://azure.microsoft.com/en-us/blog/announcing-new-options-for-sql-server-2008-and-windows-server-2008-end-of-support/", "source_type": "manufacturer", "source_access": "open", "published_at": "2018-07-12", "accessed_at": "2026-10-14", "quote": "Extended Security Updates will be available for free in Azure for 2008 and 2008 R2 versions of SQL Server and Windows Server to help secure your workloads for three more years after the end of support deadline.", "locator": "Paragraph beginning 'End of support is an ideal time'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Microsoft's offer, not an uptake figure: no Microsoft statement of how many 2008 workloads moved to Azure for free ESU was found. In July 2021 Microsoft added a fourth Azure-only year (separate record). The page was last modified on 11 May 2023; the sentence is also in the Wayback capture of 30 October 2018. lifecycle-dates-esu records the ESU dates and prices from Microsoft's lifecycle pages.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-azure-blog-2018-07-12-free-esu-in-azure-three-years-2008", "citation_text": "3 more years of Extended Security Updates were offered free in Azure for Windows Server 2008 and SQL Server 2008 workloads after their end of support, Microsoft announced in July 2018, 18 months before the Windows Server deadline (Microsoft, 2018). Source: Microsoft, \"Announcing new options for SQL Server 2008 and Windows Server 2008 End of Support (Microsoft Azure Blog, Takeshi Numoto, 12 July 2018)\" (https://azure.microsoft.com/en-us/blog/announcing-new-options-for-sql-server-2008-and-windows-server-2008-end-of-support/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-azure-blog-2018-07-12-free-esu-in-azure-three-years-2008." }, { "id": "microsoft-azure-blog-2018-07-12-on-premises-esu-75pct-of-licence-cost-a-year", "family": "eol-history-2003-2008", "statement": "75% of the full licence cost of the latest Windows Server or SQL Server version a year was the on-premises Extended Security Updates price Microsoft's July 2018 announcement gave for Windows Server 2008 and SQL Server 2008 (Microsoft, 2018).", "short_statement": null, "short_refs": null, "value": 75, "unit": "% of the full licence cost of the latest version, per year (on-premises ESU)", "display_value": "75%", "display_label": "", "display_hook": null, "row_label": "Windows Server and SQL Server 2008, as announced in July 2018", "publisher_short": null, "geography": "Worldwide", "period": "2018-07", "population": "Customers with active Software Assurance or subscription licences buying ESU for on-premises 2008 servers", "sample_n": null, "publisher": "Microsoft", "source_title": "Announcing new options for SQL Server 2008 and Windows Server 2008 End of Support (Microsoft Azure Blog, Takeshi Numoto, 12 July 2018)", "source_url": "https://azure.microsoft.com/en-us/blog/announcing-new-options-for-sql-server-2008-and-windows-server-2008-end-of-support/", "source_type": "manufacturer", "source_access": "open", "published_at": "2018-07-12", "accessed_at": "2026-10-14", "quote": "Customers with active Software Assurance or subscription licenses can purchase Extended Security Updates annually for 75 percent of the full license cost of the latest version of SQL Server or Windows Server.", "locator": "FAQ section 'What does End of Support for 2008 and 2008 R2 ... mean?', 'On-premises'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The page as fetched (last modified 11 May 2023) states 75% a year without a rise; Microsoft's later ESU FAQ priced 2008 ESU at 75% in year 1 rising in years 2 and 3 (lifecycle-dates-esu records the current rule; for 2012 the on-premises price became 100% of the licence each year). The same sentence is in the Wayback capture of 30 October 2018 (https://web.archive.org/web/20181030193930/https://azure.microsoft.com/en-us/blog/announcing-new-options-for-sql-server-2008-and-windows-server-2008-end-of-support/), so it was in the 2018 text.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-azure-blog-2018-07-12-on-premises-esu-75pct-of-licence-cost-a-year", "citation_text": "75% of the full licence cost of the latest Windows Server or SQL Server version a year was the on-premises Extended Security Updates price Microsoft's July 2018 announcement gave for Windows Server 2008 and SQL Server 2008 (Microsoft, 2018). Source: Microsoft, \"Announcing new options for SQL Server 2008 and Windows Server 2008 End of Support (Microsoft Azure Blog, Takeshi Numoto, 12 July 2018)\" (https://azure.microsoft.com/en-us/blog/announcing-new-options-for-sql-server-2008-and-windows-server-2008-end-of-support/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-azure-blog-2018-07-12-on-premises-esu-75pct-of-licence-cost-a-year." }, { "id": "microsoft-azure-blog-2018-07-12-azure-hybrid-benefit-save-up-to-55pct", "family": "eol-history-2003-2008", "statement": "Up to 55% was the saving Microsoft claimed for Software Assurance customers running SQL Server and Windows Server in Azure with the Azure Hybrid Benefit, in its July 2018 announcement for the 2008 end of support (Microsoft, 2018).", "short_statement": null, "short_refs": null, "value": 55, "unit": "% saving claimed (up to)", "display_value": "up to 55%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2018-07", "population": "Customers with Software Assurance moving SQL Server and Windows Server to Azure (Microsoft claim)", "sample_n": null, "publisher": "Microsoft", "source_title": "Announcing new options for SQL Server 2008 and Windows Server 2008 End of Support (Microsoft Azure Blog, Takeshi Numoto, 12 July 2018)", "source_url": "https://azure.microsoft.com/en-us/blog/announcing-new-options-for-sql-server-2008-and-windows-server-2008-end-of-support/", "source_type": "manufacturer", "source_access": "open", "published_at": "2018-07-12", "accessed_at": "2026-10-14", "quote": "With this benefit, customers with Software Assurance save up to 55 percent on the cost of running SQL Server and Windows Server in Azure.", "locator": "Paragraph beginning 'You can use existing licenses and the Azure Hybrid Benefit'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Manufacturer claim with no method on the page.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-azure-blog-2018-07-12-azure-hybrid-benefit-save-up-to-55pct", "citation_text": "Up to 55% was the saving Microsoft claimed for Software Assurance customers running SQL Server and Windows Server in Azure with the Azure Hybrid Benefit, in its July 2018 announcement for the 2008 end of support (Microsoft, 2018). Source: Microsoft, \"Announcing new options for SQL Server 2008 and Windows Server 2008 End of Support (Microsoft Azure Blog, Takeshi Numoto, 12 July 2018)\" (https://azure.microsoft.com/en-us/blog/announcing-new-options-for-sql-server-2008-and-windows-server-2008-end-of-support/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-azure-blog-2018-07-12-azure-hybrid-benefit-save-up-to-55pct." }, { "id": "rcp-2019-07-22-microsoft-estimate-60pct-server-install-base-on-2008", "family": "eol-history-2003-2008", "statement": "About 60% of Microsoft's server install base was on Windows Server 2008 and SQL Server 2008 in July 2019, six months before Windows Server 2008's end of support, by Microsoft's internal estimates (Microsoft via Redmond Channel Partner, 2019).", "short_statement": "In July 2019, six months before the deadline, Microsoft put **60%** of its server install base on the 2008 versions.", "short_refs": null, "value": 60, "unit": "% of Microsoft's server install base (Windows Server 2008 and SQL Server 2008, Microsoft estimate)", "display_value": "about 60%", "display_label": "Microsoft internal estimate, Inspire, July 2019", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2019-07", "population": "Microsoft's server install base (Windows Server and SQL Server; Microsoft internal estimate, method not published)", "sample_n": null, "publisher": "Redmond Channel Partner (reporting Microsoft at Inspire 2019)", "source_title": "Microsoft Inspire 2019: 11 Quotes (Redmond Channel Partner, Scott Bekker, 22 July 2019)", "source_url": "https://rcpmag.com/blogs/scott-bekker/2019/07/microsoft-inspire-2019-11-quotes.aspx", "source_type": "secondary", "source_access": "open", "published_at": "2019-07-22", "accessed_at": "2026-10-14", "quote": "According to Microsoft's internal estimates, about 60 percent of its server install base is on Windows Server 2008 and SQL Server 2008, which just passed its own support deadline earlier this month.", "locator": "Item 1, 'Windows Server to Azure'", "derived": false, "formula": null, "headline": false, "series": "eol-deadline-share-still-running-instances", "history": [], "notes": "Microsoft's own estimate as reported; no Microsoft-published document with the figure was found. The base mixes Windows Server and SQL Server, so it is not a pure Windows Server share. Redmond (8 August 2019) added 'or 24 million instances'; Network World (January 2020) and Wikipedia later dropped SQL Server and called it 60% of Windows Servers (restatement records). Comparable in kind with Microsoft's 39% for Server 2003 in July 2014.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcp-2019-07-22-microsoft-estimate-60pct-server-install-base-on-2008", "citation_text": "About 60% of Microsoft's server install base was on Windows Server 2008 and SQL Server 2008 in July 2019, six months before Windows Server 2008's end of support, by Microsoft's internal estimates (Microsoft via Redmond Channel Partner, 2019). Source: Redmond Channel Partner (reporting Microsoft at Inspire 2019), \"Microsoft Inspire 2019: 11 Quotes (Redmond Channel Partner, Scott Bekker, 22 July 2019)\" (https://rcpmag.com/blogs/scott-bekker/2019/07/microsoft-inspire-2019-11-quotes.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcp-2019-07-22-microsoft-estimate-60pct-server-install-base-on-2008." }, { "id": "rcp-2019-07-22-microsoft-2008-migration-opportunity-50-billion-usd", "family": "eol-history-2003-2008", "statement": "$50 billion was the partner market opportunity Microsoft put on migrations off Windows Server 2008 and SQL Server 2008 at its July 2019 Inspire conference, against $6 billion it gave for Windows Server 2003 in 2014 (Microsoft via Redmond Channel Partner, 2019).", "short_statement": null, "short_refs": null, "value": 50000000000, "unit": "USD market opportunity (Microsoft estimate)", "display_value": "$50 billion", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2019-07", "population": "Migrations off Windows Server 2008 and SQL Server 2008 (Microsoft estimate)", "sample_n": null, "publisher": "Redmond Channel Partner (reporting Microsoft at Inspire 2019)", "source_title": "Microsoft Inspire 2019: 11 Quotes (Redmond Channel Partner, Scott Bekker, 22 July 2019)", "source_url": "https://rcpmag.com/blogs/scott-bekker/2019/07/microsoft-inspire-2019-11-quotes.aspx", "source_type": "secondary", "source_access": "open", "published_at": "2019-07-22", "accessed_at": "2026-10-14", "quote": "Microsoft puts the market opportunity for those migrations at $50 billion.", "locator": "Item 1, 'Windows Server to Azure'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor sizing, not measured spend. The $6 billion comparison is John Case's WPC 2014 partner-revenue figure for Server 2003 (RCP, April 2015); HP put Server 2003 at $10 billion and Spiceworks at $100 billion, so these sizings use different scopes.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcp-2019-07-22-microsoft-2008-migration-opportunity-50-billion-usd", "citation_text": "$50 billion was the partner market opportunity Microsoft put on migrations off Windows Server 2008 and SQL Server 2008 at its July 2019 Inspire conference, against $6 billion it gave for Windows Server 2003 in 2014 (Microsoft via Redmond Channel Partner, 2019). Source: Redmond Channel Partner (reporting Microsoft at Inspire 2019), \"Microsoft Inspire 2019: 11 Quotes (Redmond Channel Partner, Scott Bekker, 22 July 2019)\" (https://rcpmag.com/blogs/scott-bekker/2019/07/microsoft-inspire-2019-11-quotes.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcp-2019-07-22-microsoft-2008-migration-opportunity-50-billion-usd." }, { "id": "redmond-2019-08-08-microsoft-estimate-60pct-or-24-million-instances-on-2008", "family": "eol-history-2003-2008", "statement": "24 million instances, or 60% of Microsoft's server installed base, remained on Windows Server 2008 and/or SQL Server 2008 in mid-2019 by a Microsoft estimate reported by Redmond Magazine, the same count as the 24 million Server 2003 instances that 2014 reports attributed to Microsoft (Microsoft via Redmond, 2019).", "short_statement": null, "short_refs": null, "value": 24000000, "unit": "instances on Windows Server 2008 and/or SQL Server 2008 (Microsoft estimate as reported)", "display_value": "24 million", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2019-07", "population": "Microsoft's server installed base on Windows Server 2008 and/or SQL Server 2008 (Microsoft estimate; method not published)", "sample_n": null, "publisher": "Redmond Magazine (reporting a Microsoft estimate)", "source_title": "For Windows Server 2008 Stragglers, Microsoft Dangles Extended Security Updates (Redmond Magazine, Scott Bekker, 8 August 2019)", "source_url": "https://redmondmag.com/blogs/scott-bekker/2019/08/windows-server-2008-stragglers-esu.aspx", "source_type": "secondary", "source_access": "open", "published_at": "2019-08-08", "accessed_at": "2026-10-14", "quote": "Microsoft recently estimated that 60 percent of its server installed base, or 24 million instances, remain on Windows Server 2008 and/or SQL Server 2008, which fell out of support last month.", "locator": "Third paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The 24 million is not in RCP's Inspire report and no Microsoft document with it was found; Network World (15 January 2020) attributes it to a Microsoft executive's interview with Carbonite. Coincides exactly with the 24 million Server 2003 instances of 2014, which implies an unchanged total base of about 40 million (24 / 0.60) across Windows Server and SQL Server, against 61.5 million implied in 2014 (24 / 0.39) for Windows Server alone. Treat as unverified at Microsoft.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#redmond-2019-08-08-microsoft-estimate-60pct-or-24-million-instances-on-2008", "citation_text": "24 million instances, or 60% of Microsoft's server installed base, remained on Windows Server 2008 and/or SQL Server 2008 in mid-2019 by a Microsoft estimate reported by Redmond Magazine, the same count as the 24 million Server 2003 instances that 2014 reports attributed to Microsoft (Microsoft via Redmond, 2019). Source: Redmond Magazine (reporting a Microsoft estimate), \"For Windows Server 2008 Stragglers, Microsoft Dangles Extended Security Updates (Redmond Magazine, Scott Bekker, 8 August 2019)\" (https://redmondmag.com/blogs/scott-bekker/2019/08/windows-server-2008-stragglers-esu.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#redmond-2019-08-08-microsoft-estimate-60pct-or-24-million-instances-on-2008." }, { "id": "networkworld-2020-01-15-restates-microsoft-60pct-as-windows-server-installed-base-on-2008", "family": "eol-history-2003-2008", "statement": "60% of Microsoft's 'current Windows Server installed base' was running Server 2008, Network World reported on 15 January 2020, dropping the SQL Server 2008 that Microsoft's July 2019 estimate included (Network World, 2020).", "short_statement": null, "short_refs": null, "value": 60, "unit": "% of Windows Server installed base (restated)", "display_value": "60%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2019-07", "population": "Microsoft's installed base (as restated)", "sample_n": null, "publisher": "Network World", "source_title": "It's the end for Windows Server 2008 support (Network World, Andy Patrizio, 15 January 2020)", "source_url": "https://www.networkworld.com/article/968277/it-s-the-end-for-windows-server-2008-support.html", "source_type": "secondary", "source_access": "open", "published_at": "2020-01-15", "accessed_at": "2026-10-14", "quote": "a Microsoft executive said in an interview with cloud storage provider and Microsoft partner Carbonite that 60% of its current Windows Server installed base was running Server 2008, accounting for 24 million instances.", "locator": "Third paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record. The Carbonite interview was not located. Wikipedia's Windows Server 2008 article carries the same drift.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2020-01-15-restates-microsoft-60pct-as-windows-server-installed-base-on-2008", "citation_text": "60% of Microsoft's 'current Windows Server installed base' was running Server 2008, Network World reported on 15 January 2020, dropping the SQL Server 2008 that Microsoft's July 2019 estimate included (Network World, 2020). Source: Network World, \"It's the end for Windows Server 2008 support (Network World, Andy Patrizio, 15 January 2020)\" (https://www.networkworld.com/article/968277/it-s-the-end-for-windows-server-2008-support.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2020-01-15-restates-microsoft-60pct-as-windows-server-installed-base-on-2008." }, { "id": "wikipedia-2026-08-restates-60pct-of-windows-servers-running-2008-july-2019", "family": "eol-history-2003-2008", "statement": "60% of Windows Servers were running Windows Server 2008 as of July 2019, Wikipedia's Windows Server 2008 article states, citing a January 2020 Channel Asia article rather than Microsoft, and omitting the SQL Server 2008 in Microsoft's estimate (Wikipedia, 2026).", "short_statement": null, "short_refs": null, "value": 60, "unit": "% of Windows Servers (restated)", "display_value": "60%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2019-07", "population": "Windows Servers (as restated)", "sample_n": null, "publisher": "Wikipedia", "source_title": "Windows Server 2008 (Wikipedia article, revision of 22 August 2026)", "source_url": "https://en.wikipedia.org/wiki/Windows_Server_2008", "source_type": "secondary", "source_access": "open", "published_at": "2026-08-22", "accessed_at": "2026-10-14", "quote": "As of July 2019, 60% of Windows Servers were running Windows Server 2008.", "locator": "Lead section, end of first paragraph; footnote 11: 'Not dead yet: Windows Server 2008 users have options', channelasia.tech, 21 January 2020", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record (restatements-and-aggregators covers Wikipedia's 2012 share; this is the 2008 counterpart). Channel Asia's article was not fetched; it is probably a syndicated copy of IDG coverage such as Network World's.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#wikipedia-2026-08-restates-60pct-of-windows-servers-running-2008-july-2019", "citation_text": "60% of Windows Servers were running Windows Server 2008 as of July 2019, Wikipedia's Windows Server 2008 article states, citing a January 2020 Channel Asia article rather than Microsoft, and omitting the SQL Server 2008 in Microsoft's estimate (Wikipedia, 2026). Source: Wikipedia, \"Windows Server 2008 (Wikipedia article, revision of 22 August 2026)\" (https://en.wikipedia.org/wiki/Windows_Server_2008). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#wikipedia-2026-08-restates-60pct-of-windows-servers-running-2008-july-2019." }, { "id": "microsoft-2020-01-29-on-premises-server-grew-10pct-4-points-from-2008-end-of-support", "family": "eol-history-2003-2008", "statement": "Roughly 4 points of the 10% growth in Microsoft's on-premises server business in October to December 2019 came from the end of support for Windows Server 2008, Microsoft's CFO said on its January 2020 earnings call (Microsoft, 2020).", "short_statement": "**4 points** of Microsoft's 10% on-premises server growth at the end of 2019 came from Windows Server 2008's end of support.", "short_refs": null, "value": 4, "unit": "percentage points of on-premises server revenue growth (quarter to December 2019)", "display_value": "about 4 points", "display_label": "Microsoft earnings call, quarter to December 2019", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2019-10/2019-12", "population": "Microsoft's on-premises server products revenue, fiscal 2020 second quarter", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Fiscal Year 2020 Second Quarter Earnings Conference Call (transcript, 29 January 2020)", "source_url": "http://www.microsoft.com/en-us/Investor/events/FY-2020/earnings-fy-2020-q2.aspx", "source_type": "primary", "source_access": "open", "published_at": "2020-01-29", "accessed_at": "2026-10-14", "quote": "And our on-premises server business grew 10 percent and 12 percent in constant currency, with roughly 4 points of benefit from the end of support for Windows Server 2008", "locator": "CFO Amy Hood's prepared remarks, Intelligent Cloud segment. Snapshot: https://web.archive.org/web/20200629015235/http://www.microsoft.com/en-us/Investor/events/FY-2020/earnings-fy-2020-q2.aspx", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Microsoft's own transcript, recovered from the Wayback Machine (the live investor page returns 'page cannot be found'). Guidance in the same call: on-premises server growth 'should be high single digits... as well as some continued benefit related to the end of support for Windows Server 2008'. Reported by Redmond Channel Partner (30 January 2020) and Petri (31 January 2020). on-premises-and-cloud-share may cite this record. No comparable Microsoft revenue statement was found for the 2003 or 2012 deadlines.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2020-01-29-on-premises-server-grew-10pct-4-points-from-2008-end-of-support", "citation_text": "Roughly 4 points of the 10% growth in Microsoft's on-premises server business in October to December 2019 came from the end of support for Windows Server 2008, Microsoft's CFO said on its January 2020 earnings call (Microsoft, 2020). Source: Microsoft, \"Microsoft Fiscal Year 2020 Second Quarter Earnings Conference Call (transcript, 29 January 2020)\" (http://www.microsoft.com/en-us/Investor/events/FY-2020/earnings-fy-2020-q2.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2020-01-29-on-premises-server-grew-10pct-4-points-from-2008-end-of-support." }, { "id": "microsoft-2020-01-29-nearly-one-third-server-customers-use-hybrid-benefit", "family": "eol-history-2003-2008", "statement": "Nearly one-third of Microsoft's Windows Server and SQL Server enterprise customers were using its hybrid use benefits to deploy Azure in January 2020, the month Windows Server 2008 left support, Microsoft's CFO said (Microsoft, 2020).", "short_statement": null, "short_refs": null, "value": 33, "unit": "% of Windows Server and SQL Server enterprise customers (nearly one-third)", "display_value": "nearly one-third", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2020-01", "population": "Microsoft's Windows Server and SQL Server enterprise customers (Microsoft statement)", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Fiscal Year 2020 Second Quarter Earnings Conference Call (transcript, 29 January 2020)", "source_url": "http://www.microsoft.com/en-us/Investor/events/FY-2020/earnings-fy-2020-q2.aspx", "source_type": "primary", "source_access": "open", "published_at": "2020-01-29", "accessed_at": "2026-10-14", "quote": "Nearly one third of our Windows Server and SQL Server enterprise customers are already using our hybrid use benefits to deploy Azure, reflecting the value and flexibility of these offerings.", "locator": "CFO Amy Hood's prepared remarks, Intelligent Cloud segment. Snapshot: https://web.archive.org/web/20200629015235/http://www.microsoft.com/en-us/Investor/events/FY-2020/earnings-fy-2020-q2.aspx", "derived": true, "formula": "'nearly one third' expressed as 33", "headline": false, "series": "", "history": [], "notes": "The closest Microsoft came to an uptake figure for its Azure offers at the 2008 deadline; it is not a count of 2008 workloads moved to Azure or of free ESU users (none found).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2020-01-29-nearly-one-third-server-customers-use-hybrid-benefit", "citation_text": "Nearly one-third of Microsoft's Windows Server and SQL Server enterprise customers were using its hybrid use benefits to deploy Azure in January 2020, the month Windows Server 2008 left support, Microsoft's CFO said (Microsoft, 2020). Source: Microsoft, \"Microsoft Fiscal Year 2020 Second Quarter Earnings Conference Call (transcript, 29 January 2020)\" (http://www.microsoft.com/en-us/Investor/events/FY-2020/earnings-fy-2020-q2.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2020-01-29-nearly-one-third-server-customers-use-hybrid-benefit." }, { "id": "microsoft-2021-07-14-fourth-esu-year-for-2008-only-on-azure", "family": "eol-history-2003-2008", "statement": "1 additional year of Extended Security Updates for Windows Server 2008 and 2008 R2, only on Azure, was announced by Microsoft in July 2021 alongside three free ESU years in Azure for Windows Server 2012 (Microsoft, 2021).", "short_statement": null, "short_refs": null, "value": 1, "unit": "additional ESU year (Azure only)", "display_value": "1 extra year", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2021-07", "population": "Windows Server 2008 and 2008 R2 workloads running on Azure", "sample_n": null, "publisher": "Microsoft", "source_title": "Plan your Windows Server 2012 and 2012 R2 End of Support (Microsoft Windows Server Blog, 14 July 2021)", "source_url": "https://www.microsoft.com/en-us/windows-server/blog/2021/07/14/plan-your-windows-server-2012-and-2012-r2-end-of-support/", "source_type": "primary", "source_access": "open", "published_at": "2021-07-14", "accessed_at": "2026-10-14", "quote": "Furthermore, we are also announcing, one additional year of extended security update for Windows Server 2008 and 2008 R2 only on Azure.", "locator": "Sixth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Announcement record; the resulting dates are lifecycle-dates-esu's (reusable ids microsoft-2025-10-lifecycle-faq-esu-windows-server-2008-one-additional-year-azure-only and microsoft-lifecycle-windows-server-2008-r2-esu-year-4-azure-ended-2024-01-10). Same post: 'Customers can migrate their workloads to Azure and get free Extended Security Updates for three more years, only in Azure' (Server 2012).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2021-07-14-fourth-esu-year-for-2008-only-on-azure", "citation_text": "1 additional year of Extended Security Updates for Windows Server 2008 and 2008 R2, only on Azure, was announced by Microsoft in July 2021 alongside three free ESU years in Azure for Windows Server 2012 (Microsoft, 2021). Source: Microsoft, \"Plan your Windows Server 2012 and 2012 R2 End of Support (Microsoft Windows Server Blog, 14 July 2021)\" (https://www.microsoft.com/en-us/windows-server/blog/2021/07/14/plan-your-windows-server-2012-and-2012-r2-end-of-support/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2021-07-14-fourth-esu-year-for-2008-only-on-azure." }, { "id": "ciodive-2019-03-04-spiceworks-one-third-buy-servers-because-of-os-end-of-life", "family": "eol-history-2003-2008", "statement": "One-third of organisations bought new servers because the server's operating system reached end of life, Spiceworks found in early 2019, ten months before Windows Server 2008's end of support (Spiceworks via CIO Dive, 2019).", "short_statement": null, "short_refs": null, "value": 33, "unit": "% of organisations surveyed (one-third)", "display_value": "one-third", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe (Spiceworks survey)", "period": "2019-01", "population": "More than 500 IT decision makers surveyed by Spiceworks (2019 server purchase-intent research)", "sample_n": 500, "publisher": "CIO Dive (reporting Spiceworks)", "source_title": "On-premise servers persist in 98% of businesses, even with cloud hype (CIO Dive, 4 March 2019)", "source_url": "https://www.ciodive.com/news/on-premise-servers-persist-in-98-of-businesses-even-with-cloud-hype/549643/", "source_type": "secondary", "source_access": "open", "published_at": "2019-03-04", "accessed_at": "2026-10-14", "quote": "One-third of organizations buy new servers because of the end of life for a server's operating system, according to Spiceworks, and such a large scale event is on the horizon.", "locator": "Paragraph after 'end-of-life events can direct investments'", "derived": true, "formula": "'one-third' expressed as 33", "headline": false, "series": "", "history": [], "notes": "Spiceworks' 2019 server research (the 98% on-premises figure belongs to on-premises-and-cloud-share). Survey month and regions not stated by CIO Dive; period set to early 2019. No Spiceworks 2019 figure for the share of organisations still running Windows Server 2008 was found, which leaves the Spiceworks organisations series without a 2008 point.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#ciodive-2019-03-04-spiceworks-one-third-buy-servers-because-of-os-end-of-life", "citation_text": "One-third of organisations bought new servers because the server's operating system reached end of life, Spiceworks found in early 2019, ten months before Windows Server 2008's end of support (Spiceworks via CIO Dive, 2019). Source: CIO Dive (reporting Spiceworks), \"On-premise servers persist in 98% of businesses, even with cloud hype (CIO Dive, 4 March 2019)\" (https://www.ciodive.com/news/on-premise-servers-persist-in-98-of-businesses-even-with-cloud-hype/549643/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#ciodive-2019-03-04-spiceworks-one-third-buy-servers-because-of-os-end-of-life." }, { "id": "microsoft-azure-update-2023-10-13-server-2012-free-esu-on-four-azure-platforms", "family": "eol-history-2003-2008", "statement": "4 Azure platforms (Azure Virtual Machines, Azure Dedicated Host, Azure VMware Solution and Azure Stack HCI) qualified for free Extended Security Updates when Windows Server 2012/R2 reached end of support on 10 October 2023, Microsoft said, where its 2018 offer for 2008 named Azure virtual machines (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 4, "unit": "Azure platforms eligible for free Windows Server 2012 ESU (count of named options)", "display_value": "4 platforms", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10", "population": "Windows Server 2012/R2 workloads moved to Azure (Microsoft offer)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012/R2 reaches end of support (Azure updates, published 13 October 2023)", "source_url": "https://azure.microsoft.com/en-us/updates/windows-server-2012r2-reaches-end-of-support/", "source_type": "manufacturer", "source_access": "open", "published_at": "2023-10-13", "accessed_at": "2026-10-14", "quote": "Migrating to Azure for free Extended Security Updates. This includes options such as Azure Virtual Machines, Azure Dedicated Host, Azure VMware Solution, and Azure Stack HCI.", "locator": "Second bullet. Snapshot: https://web.archive.org/web/20231015005601/https://azure.microsoft.com/en-us/updates/windows-server-2012r2-reaches-end-of-support/", "derived": true, "formula": "count of the platforms Microsoft names for free ESU: Azure Virtual Machines, Azure Dedicated Host, Azure VMware Solution, Azure Stack HCI = 4", "headline": false, "series": "", "history": [], "notes": "Microsoft's statement on the day of the 2012 deadline (the live Azure updates page now renders by script; text taken from the Wayback capture of 15 October 2023). Third option named: 'Purchasing Extended Security Updates enabled by Azure Arc'. Microsoft gave no count of 2012 servers still running at the deadline; the only audit at that deadline is Lansweeper's (20.94% of 1.3 million instances, September 2023, recorded by install-base-audits). Redmond (19 September 2023) reported Arc-managed ESU reaching general availability with flat yearly pricing; lifecycle-dates-esu records those prices.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-azure-update-2023-10-13-server-2012-free-esu-on-four-azure-platforms", "citation_text": "4 Azure platforms (Azure Virtual Machines, Azure Dedicated Host, Azure VMware Solution and Azure Stack HCI) qualified for free Extended Security Updates when Windows Server 2012/R2 reached end of support on 10 October 2023, Microsoft said, where its 2018 offer for 2008 named Azure virtual machines (Microsoft, 2023). Source: Microsoft, \"Windows Server 2012/R2 reaches end of support (Azure updates, published 13 October 2023)\" (https://azure.microsoft.com/en-us/updates/windows-server-2012r2-reaches-end-of-support/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-azure-update-2023-10-13-server-2012-free-esu-on-four-azure-platforms." }, { "id": "rapid7-2020-10-19-unsupported-windows-server-internet-exposed-59pct", "family": "eol-history-2003-2008", "statement": "59% of all uniquely observed internet-exposed Windows Server instances were running unsupported versions in Rapid7's September 2020 Project Sonar scans, against 41% supported, eight months after Windows Server 2008 and 2008 R2 left support (Rapid7, 2020).", "short_statement": null, "short_refs": null, "value": 59, "unit": "% of uniquely observed internet-exposed Windows Server instances", "display_value": "59%", "display_label": "Rapid7 Project Sonar scans, September 2020", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (internet-exposed servers)", "period": "2020-09", "population": "Windows Server instances exposed to the internet and fingerprinted by Rapid7's Project Sonar scans during September 2020 (internet-facing instances only)", "sample_n": null, "publisher": "Rapid7", "source_title": "Are You Still Running End-of-Life Windows Servers? (Rapid7 blog, Kwan Lin, 19 October 2020)", "source_url": "https://www.rapid7.com/blog/post/2020/10/19/are-you-still-running-end-of-life-windows-servers/", "source_type": "primary", "source_access": "open", "published_at": "2020-10-19", "accessed_at": "2026-10-14", "quote": "Over the course of September 2020, 59% of all uniquely observed instances of Windows Server were unsupported, while 41% were supported.", "locator": "Paragraph beginning 'What we found was alarming'", "derived": false, "formula": null, "headline": false, "series": "eol-deadline-share-still-running-instances", "history": [], "notes": "Security vendor publishing its own scan research (primary for the measurement). Internet-exposed instances over-represent neglected servers and include Server 2003 as well as 2008; not comparable with inventory shares. The US had nearly half a million more unsupported than supported instances. exposure-security cites this id.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#rapid7-2020-10-19-unsupported-windows-server-internet-exposed-59pct", "citation_text": "59% of all uniquely observed internet-exposed Windows Server instances were running unsupported versions in Rapid7's September 2020 Project Sonar scans, against 41% supported, eight months after Windows Server 2008 and 2008 R2 left support (Rapid7, 2020). Source: Rapid7, \"Are You Still Running End-of-Life Windows Servers? (Rapid7 blog, Kwan Lin, 19 October 2020)\" (https://www.rapid7.com/blog/post/2020/10/19/are-you-still-running-end-of-life-windows-servers/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#rapid7-2020-10-19-unsupported-windows-server-internet-exposed-59pct." }, { "id": "rapid7-2020-10-19-unsupported-server-2008-r2-instances-fell-by-over-2-million", "family": "eol-history-2003-2008", "statement": "2,000,000+ internet-exposed Windows Server 2008 R2 instances disappeared from Rapid7's Project Sonar scans in the months after its January 2020 end of support, against about 40,000 for Windows Server 2008 (Rapid7, 2020).", "short_statement": null, "short_refs": null, "value": 2000000, "unit": "internet-exposed Windows Server 2008 R2 instances (decline observed in scans)", "display_value": "2 million+", "display_label": "Rapid7 Project Sonar, early to September 2020", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (internet-exposed servers)", "period": "2020", "population": "Windows Server instances exposed to the internet and fingerprinted by Rapid7's Project Sonar scans, early 2020 to September 2020", "sample_n": null, "publisher": "Rapid7", "source_title": "Are You Still Running End-of-Life Windows Servers? (Rapid7 blog, Kwan Lin, 19 October 2020)", "source_url": "https://www.rapid7.com/blog/post/2020/10/19/are-you-still-running-end-of-life-windows-servers/", "source_type": "primary", "source_access": "open", "published_at": "2020-10-19", "accessed_at": "2026-10-14", "quote": "The decline in usage of Server 2008 and Server 2008 R2 amounted to approximately 40,000 and over 2,000,000 instances, respectively.", "locator": "Paragraph after 'there does appear to be some level of progress'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "A decline in observed instances may mean upgrades, decommissioning or removal from the internet; Rapid7 does not separate these, and notes Netcraft saw web servers shift away from Windows.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#rapid7-2020-10-19-unsupported-server-2008-r2-instances-fell-by-over-2-million", "citation_text": "2,000,000+ internet-exposed Windows Server 2008 R2 instances disappeared from Rapid7's Project Sonar scans in the months after its January 2020 end of support, against about 40,000 for Windows Server 2008 (Rapid7, 2020). Source: Rapid7, \"Are You Still Running End-of-Life Windows Servers? (Rapid7 blog, Kwan Lin, 19 October 2020)\" (https://www.rapid7.com/blog/post/2020/10/19/are-you-still-running-end-of-life-windows-servers/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#rapid7-2020-10-19-unsupported-server-2008-r2-instances-fell-by-over-2-million." }, { "id": "brentozar-2019-03-26-sql-constantcare-15pct-sql-server-2008", "family": "eol-history-2003-2008", "statement": "15% of 2,396 SQL Server instances monitored by Brent Ozar Unlimited's SQL ConstantCare service ran SQL Server 2008 or 2008 R2 in March 2019, 15 weeks before their 9 July 2019 end of support (Brent Ozar Unlimited, 2019).", "short_statement": null, "short_refs": null, "value": 15, "unit": "% of SQL Server instances monitored by SQL ConstantCare", "display_value": "15%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (SQL ConstantCare users)", "period": "2019-03", "population": "2,396 SQL Server instances sending diagnostics to Brent Ozar Unlimited's SQL ConstantCare service, March 2019", "sample_n": 2396, "publisher": "Brent Ozar Unlimited", "source_title": "What Are You Going to Do About SQL Server 2008? (Brent Ozar Unlimited blog, Brent Ozar, 26 March 2019)", "source_url": "https://www.brentozar.com/archive/2019/03/what-are-you-going-to-do-about-sql-server-2008/", "source_type": "manufacturer", "source_access": "open", "published_at": "2019-03-26", "accessed_at": "2026-10-14", "quote": "That means 15% of your servers are going to be out of support in about 106 days: SQL Server 2008 & R2 both end support on July 9th.", "locator": "Sentence after the opening version list ('2,396 SQL Servers... 15% (362 instances) of SQL Server 2008 and 2008 R2')", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor telemetry from a paid monitoring service (small, self-selected base). Same post: SQL Server 2012 18%, 2014 27%, 2016 32%, 2017 7%. Later counterpart: Lansweeper found just under 8% of SQL Server instances still on SQL Server 2008 in June 2024 (install-base-audits, id theregister-2024-06-17-lansweeper-sql-server-2008-share-just-under-8pct).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#brentozar-2019-03-26-sql-constantcare-15pct-sql-server-2008", "citation_text": "15% of 2,396 SQL Server instances monitored by Brent Ozar Unlimited's SQL ConstantCare service ran SQL Server 2008 or 2008 R2 in March 2019, 15 weeks before their 9 July 2019 end of support (Brent Ozar Unlimited, 2019). Source: Brent Ozar Unlimited, \"What Are You Going to Do About SQL Server 2008? (Brent Ozar Unlimited blog, Brent Ozar, 26 March 2019)\" (https://www.brentozar.com/archive/2019/03/what-are-you-going-to-do-about-sql-server-2008/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#brentozar-2019-03-26-sql-constantcare-15pct-sql-server-2008." }, { "id": "msrc-cvrf-2023-windows-server-2012-r2-cves-450-derived", "family": "exposure-security", "statement": "450 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's twelve 2023 monthly security update documents, the version's last year of extended support before 10 October 2023 (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 450, "unit": "distinct CVEs listing Windows Server 2012 R2 as an affected product", "display_value": "450", "display_label": "Distinct CVEs in Microsoft's 2023 security update documents (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2012 R2, 2023", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2023", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2012 R2", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to December 2023 (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2023-Jan", "source_type": "primary", "source_access": "open", "published_at": "2023-12-12", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2023 Security Updates\"} ... {\"ProductID\":\"10483\",\"Value\":\"Windows Server 2012 R2\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to December 2023; per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to December 2023 (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2012 R2/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2012 R2', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-listing-windows-server-version-per-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 433 for 2023. Per month: Jan 48, Feb 35, Mar 45, Apr 62, May 16, Jun 29, Jul 72, Aug 27, Sep 18, Oct 61, Nov 19, Dec 18 (the November and December fixes reached ESU customers only).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2023-windows-server-2012-r2-cves-450-derived", "citation_text": "450 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's twelve 2023 monthly security update documents, the version's last year of extended support before 10 October 2023 (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to December 2023 (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2023-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2023-windows-server-2012-r2-cves-450-derived." }, { "id": "msrc-cvrf-2024-windows-server-2012-r2-cves-430-derived", "family": "exposure-security", "statement": "430 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's 2024 monthly security update documents, the version's first year of paid Extended Security Updates (Microsoft MSRC, counted 2026).", "short_statement": "Microsoft's 2024 security updates listed **430** vulnerabilities affecting Windows Server 2012 R2, in its first paid year.", "short_refs": null, "value": 430, "unit": "distinct CVEs listing Windows Server 2012 R2 as an affected product", "display_value": "430", "display_label": "Distinct CVEs in Microsoft's 2024 security update documents (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2012 R2, 2024 (first ESU year)", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2024", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2012 R2", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to December 2024 (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2024-Jan", "source_type": "primary", "source_access": "open", "published_at": "2024-12-10", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2024 Security Updates\"} ... {\"ProductID\":\"10483\",\"Value\":\"Windows Server 2012 R2\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to December 2024; per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to December 2024 (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2012 R2/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2012 R2', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-listing-windows-server-version-per-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 421 for 2024.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2024-windows-server-2012-r2-cves-430-derived", "citation_text": "430 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's 2024 monthly security update documents, the version's first year of paid Extended Security Updates (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to December 2024 (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2024-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2024-windows-server-2012-r2-cves-430-derived." }, { "id": "msrc-cvrf-2025-windows-server-2012-r2-cves-466-derived", "family": "exposure-security", "statement": "466 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's 2025 security update documents, its second paid ESU year, not counting the November 2025 release the MSRC API no longer serves (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 466, "unit": "distinct CVEs listing Windows Server 2012 R2 as an affected product", "display_value": "466", "display_label": "Distinct CVEs in Microsoft's 2025 security update documents, November release missing (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2012 R2, 2025 (without November)", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2025", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2012 R2", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to December 2025 (November 2025 Patch Tuesday not served by the API) (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Jan", "source_type": "primary", "source_access": "open", "published_at": "2025-12-09", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2025 Security Updates\"} ... {\"ProductID\":\"10483\",\"Value\":\"Windows Server 2012 R2\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to December 2025 (November 2025 Patch Tuesday not served by the API); per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to December 2025 (November 2025 Patch Tuesday not served by the API) (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2012 R2/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2012 R2', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-listing-windows-server-version-per-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 464 for 2025. The MSRC API's '2025-Nov' document is titled 'December 2025 Early Security Updates' and holds only 110 early December/third-party entries; the 11 November 2025 Patch Tuesday release (e.g. CVE-2025-62215, added to KEV 2025-11-12) is absent from both the CVRF v3.0 and the Security Update Guide v2.0 APIs as of 2026-10-14, so every 2025 count is a lower bound by roughly one month.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2025-windows-server-2012-r2-cves-466-derived", "citation_text": "466 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's 2025 security update documents, its second paid ESU year, not counting the November 2025 release the MSRC API no longer serves (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to December 2025 (November 2025 Patch Tuesday not served by the API) (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2025-windows-server-2012-r2-cves-466-derived." }, { "id": "msrc-cvrf-2026-ytd-windows-server-2012-r2-cves-1693-derived", "family": "exposure-security", "statement": "1,693 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's ten 2026 monthly security update documents up to 13 October 2026, its final ESU year, nearly four times the 2023 count (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 1693, "unit": "distinct CVEs listing Windows Server 2012 R2 as an affected product", "display_value": "1,693", "display_label": "Distinct CVEs in Microsoft's January-October 2026 security update documents (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2012 R2, January to October 2026", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2026-01/2026-10", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2012 R2", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2026 Security Updates\"} ... {\"ProductID\":\"10483\",\"Value\":\"Windows Server 2012 R2\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to October 2026; per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to October 2026 (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2012 R2/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2012 R2', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-listing-windows-server-version-per-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 1,656 for 2026. Per month 2026: Jan 37, Feb 15, Mar 32, Apr 63, May 44, Jun 65, Jul 197, Aug 148, Sep 419, Oct 673. Microsoft's whole monthly volume rose from mid-2026 (all-product counts in the same documents: 2,005 in July, 2,776 in September, 1,759 in October), so the rise is not specific to 2012 R2.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-windows-server-2012-r2-cves-1693-derived", "citation_text": "1,693 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's ten 2026 monthly security update documents up to 13 October 2026, its final ESU year, nearly four times the 2023 count (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-windows-server-2012-r2-cves-1693-derived." }, { "id": "msrc-cvrf-2025-windows-server-2016-cves-587-derived", "family": "exposure-security", "statement": "587 distinct CVEs listed Windows Server 2016 as an affected product in Microsoft's 2025 security update documents, not counting the November 2025 release the MSRC API no longer serves (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 587, "unit": "distinct CVEs listing Windows Server 2016 as an affected product", "display_value": "587", "display_label": "Distinct CVEs in Microsoft's 2025 security update documents, November release missing (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2016, 2025 (without November)", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2025", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2016", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to December 2025 (November 2025 Patch Tuesday not served by the API) (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Jan", "source_type": "primary", "source_access": "open", "published_at": "2025-12-09", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2025 Security Updates\"} ... {\"ProductID\":\"10816\",\"Value\":\"Windows Server 2016\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to December 2025 (November 2025 Patch Tuesday not served by the API); per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to December 2025 (November 2025 Patch Tuesday not served by the API) (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2016/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2016', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-listing-windows-server-version-per-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 585 for 2025. The MSRC API's '2025-Nov' document is titled 'December 2025 Early Security Updates' and holds only 110 early December/third-party entries; the 11 November 2025 Patch Tuesday release (e.g. CVE-2025-62215, added to KEV 2025-11-12) is absent from both the CVRF v3.0 and the Security Update Guide v2.0 APIs as of 2026-10-14, so every 2025 count is a lower bound by roughly one month.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2025-windows-server-2016-cves-587-derived", "citation_text": "587 distinct CVEs listed Windows Server 2016 as an affected product in Microsoft's 2025 security update documents, not counting the November 2025 release the MSRC API no longer serves (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to December 2025 (November 2025 Patch Tuesday not served by the API) (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2025-windows-server-2016-cves-587-derived." }, { "id": "msrc-cvrf-2026-ytd-windows-server-2016-cves-2076-derived", "family": "exposure-security", "statement": "2,076 distinct CVEs listed Windows Server 2016 as an affected product in Microsoft's ten 2026 monthly security update documents up to 13 October 2026, three months before its end of extended support (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 2076, "unit": "distinct CVEs listing Windows Server 2016 as an affected product", "display_value": "2,076", "display_label": "Distinct CVEs in Microsoft's January-October 2026 security update documents (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2016, January to October 2026", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2026-01/2026-10", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2016", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2026 Security Updates\"} ... {\"ProductID\":\"10816\",\"Value\":\"Windows Server 2016\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to October 2026; per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to October 2026 (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2016/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2016', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-listing-windows-server-version-per-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 2,042 for 2026. The 2026 documents carry far more CVEs than any earlier year for every product, so 2026 is not comparable with 2019-2025 without that caveat.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-windows-server-2016-cves-2076-derived", "citation_text": "2,076 distinct CVEs listed Windows Server 2016 as an affected product in Microsoft's ten 2026 monthly security update documents up to 13 October 2026, three months before its end of extended support (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-windows-server-2016-cves-2076-derived." }, { "id": "msrc-cvrf-2025-windows-server-2019-cves-664-derived", "family": "exposure-security", "statement": "664 distinct CVEs listed Windows Server 2019 as an affected product in Microsoft's 2025 security update documents, not counting the November 2025 release the MSRC API no longer serves; Windows Server 2019 is in extended support until 9 January 2029 (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 664, "unit": "distinct CVEs listing Windows Server 2019 as an affected product", "display_value": "664", "display_label": "Distinct CVEs in Microsoft's 2025 security update documents, November release missing (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2019, 2025 (without November)", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2025", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2019", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to December 2025 (November 2025 Patch Tuesday not served by the API) (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Jan", "source_type": "primary", "source_access": "open", "published_at": "2025-12-09", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2025 Security Updates\"} ... {\"ProductID\":\"11571\",\"Value\":\"Windows Server 2019\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to December 2025 (November 2025 Patch Tuesday not served by the API); per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to December 2025 (November 2025 Patch Tuesday not served by the API) (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2019/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2019', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-listing-windows-server-version-per-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 661 for 2025. The MSRC API's '2025-Nov' document is titled 'December 2025 Early Security Updates' and holds only 110 early December/third-party entries; the 11 November 2025 Patch Tuesday release (e.g. CVE-2025-62215, added to KEV 2025-11-12) is absent from both the CVRF v3.0 and the Security Update Guide v2.0 APIs as of 2026-10-14, so every 2025 count is a lower bound by roughly one month.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2025-windows-server-2019-cves-664-derived", "citation_text": "664 distinct CVEs listed Windows Server 2019 as an affected product in Microsoft's 2025 security update documents, not counting the November 2025 release the MSRC API no longer serves; Windows Server 2019 is in extended support until 9 January 2029 (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to December 2025 (November 2025 Patch Tuesday not served by the API) (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2025-windows-server-2019-cves-664-derived." }, { "id": "msrc-cvrf-2026-ytd-windows-server-2019-cves-2451-derived", "family": "exposure-security", "statement": "2,451 distinct CVEs listed Windows Server 2019 as an affected product in Microsoft's ten 2026 monthly security update documents up to 13 October 2026; Windows Server 2019 is in extended support until 9 January 2029 (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 2451, "unit": "distinct CVEs listing Windows Server 2019 as an affected product", "display_value": "2,451", "display_label": "Distinct CVEs in Microsoft's January-October 2026 security update documents (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2019, January to October 2026", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2026-01/2026-10", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2019", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2026 Security Updates\"} ... {\"ProductID\":\"11571\",\"Value\":\"Windows Server 2019\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to October 2026; per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to October 2026 (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2019/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2019', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-listing-windows-server-version-per-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 2,415 for 2026. The 2026 documents carry far more CVEs than any earlier year for every product, so 2026 is not comparable with 2019-2025 without that caveat.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-windows-server-2019-cves-2451-derived", "citation_text": "2,451 distinct CVEs listed Windows Server 2019 as an affected product in Microsoft's ten 2026 monthly security update documents up to 13 October 2026; Windows Server 2019 is in extended support until 9 January 2029 (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-windows-server-2019-cves-2451-derived." }, { "id": "msrc-cvrf-2025-windows-server-2022-cves-731-derived", "family": "exposure-security", "statement": "731 distinct CVEs listed Windows Server 2022 as an affected product in Microsoft's 2025 security update documents, not counting the November 2025 release the MSRC API no longer serves (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 731, "unit": "distinct CVEs listing Windows Server 2022 as an affected product", "display_value": "731", "display_label": "Distinct CVEs in Microsoft's 2025 security update documents, November release missing (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2022, 2025 (without November)", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2025", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2022", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to December 2025 (November 2025 Patch Tuesday not served by the API) (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Jan", "source_type": "primary", "source_access": "open", "published_at": "2025-12-09", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2025 Security Updates\"} ... {\"ProductID\":\"11923\",\"Value\":\"Windows Server 2022\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to December 2025 (November 2025 Patch Tuesday not served by the API); per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to December 2025 (November 2025 Patch Tuesday not served by the API) (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2022/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2022', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-listing-windows-server-version-per-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 728 for 2025. The MSRC API's '2025-Nov' document is titled 'December 2025 Early Security Updates' and holds only 110 early December/third-party entries; the 11 November 2025 Patch Tuesday release (e.g. CVE-2025-62215, added to KEV 2025-11-12) is absent from both the CVRF v3.0 and the Security Update Guide v2.0 APIs as of 2026-10-14, so every 2025 count is a lower bound by roughly one month.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2025-windows-server-2022-cves-731-derived", "citation_text": "731 distinct CVEs listed Windows Server 2022 as an affected product in Microsoft's 2025 security update documents, not counting the November 2025 release the MSRC API no longer serves (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to December 2025 (November 2025 Patch Tuesday not served by the API) (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2025-windows-server-2022-cves-731-derived." }, { "id": "msrc-cvrf-2026-ytd-windows-server-2022-cves-2624-derived", "family": "exposure-security", "statement": "2,624 distinct CVEs listed Windows Server 2022 as an affected product in Microsoft's ten 2026 monthly security update documents up to 13 October 2026, when it left mainstream support (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 2624, "unit": "distinct CVEs listing Windows Server 2022 as an affected product", "display_value": "2,624", "display_label": "Distinct CVEs in Microsoft's January-October 2026 security update documents (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2022, January to October 2026", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2026-01/2026-10", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2022", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2026 Security Updates\"} ... {\"ProductID\":\"11923\",\"Value\":\"Windows Server 2022\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to October 2026; per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to October 2026 (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2022/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2022', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-listing-windows-server-version-per-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 2,583 for 2026. The 2026 documents carry far more CVEs than any earlier year for every product, so 2026 is not comparable with 2019-2025 without that caveat.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-windows-server-2022-cves-2624-derived", "citation_text": "2,624 distinct CVEs listed Windows Server 2022 as an affected product in Microsoft's ten 2026 monthly security update documents up to 13 October 2026, when it left mainstream support (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-windows-server-2022-cves-2624-derived." }, { "id": "msrc-cvrf-2025-windows-server-2025-cves-755-derived", "family": "exposure-security", "statement": "755 distinct CVEs listed Windows Server 2025 as an affected product in Microsoft's 2025 security update documents, not counting the November 2025 release the MSRC API no longer serves; Windows Server 2025 is the current release (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 755, "unit": "distinct CVEs listing Windows Server 2025 as an affected product", "display_value": "755", "display_label": "Distinct CVEs in Microsoft's 2025 security update documents, November release missing (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2025, 2025 (without November)", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2025", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2025", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to December 2025 (November 2025 Patch Tuesday not served by the API) (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Jan", "source_type": "primary", "source_access": "open", "published_at": "2025-12-09", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2025 Security Updates\"} ... {\"ProductID\":\"12436\",\"Value\":\"Windows Server 2025\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to December 2025 (November 2025 Patch Tuesday not served by the API); per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to December 2025 (November 2025 Patch Tuesday not served by the API) (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2025/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2025', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-listing-windows-server-version-per-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 754 for 2025. The MSRC API's '2025-Nov' document is titled 'December 2025 Early Security Updates' and holds only 110 early December/third-party entries; the 11 November 2025 Patch Tuesday release (e.g. CVE-2025-62215, added to KEV 2025-11-12) is absent from both the CVRF v3.0 and the Security Update Guide v2.0 APIs as of 2026-10-14, so every 2025 count is a lower bound by roughly one month.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2025-windows-server-2025-cves-755-derived", "citation_text": "755 distinct CVEs listed Windows Server 2025 as an affected product in Microsoft's 2025 security update documents, not counting the November 2025 release the MSRC API no longer serves; Windows Server 2025 is the current release (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to December 2025 (November 2025 Patch Tuesday not served by the API) (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2025-windows-server-2025-cves-755-derived." }, { "id": "msrc-cvrf-2026-ytd-windows-server-2025-cves-2815-derived", "family": "exposure-security", "statement": "2,815 distinct CVEs listed Windows Server 2025 as an affected product in Microsoft's ten 2026 monthly security update documents up to 13 October 2026; Windows Server 2025 is the current release (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 2815, "unit": "distinct CVEs listing Windows Server 2025 as an affected product", "display_value": "2,815", "display_label": "Distinct CVEs in Microsoft's January-October 2026 security update documents (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2025, January to October 2026", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2026-01/2026-10", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2025", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2026 Security Updates\"} ... {\"ProductID\":\"12436\",\"Value\":\"Windows Server 2025\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to October 2026; per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to October 2026 (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2025/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2025', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-listing-windows-server-version-per-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 2,785 for 2026. The 2026 documents carry far more CVEs than any earlier year for every product, so 2026 is not comparable with 2019-2025 without that caveat.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-windows-server-2025-cves-2815-derived", "citation_text": "2,815 distinct CVEs listed Windows Server 2025 as an affected product in Microsoft's ten 2026 monthly security update documents up to 13 October 2026; Windows Server 2025 is the current release (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-windows-server-2025-cves-2815-derived." }, { "id": "msrc-cvrf-2019-windows-server-2008-r2-cves-385-derived", "family": "exposure-security", "statement": "385 distinct CVEs listed Windows Server 2008 R2 as an affected product in Microsoft's twelve 2019 monthly security update documents, the version's last full year of extended support before 14 January 2020 (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 385, "unit": "distinct CVEs listing Windows Server 2008 R2 as an affected product", "display_value": "385", "display_label": "Distinct CVEs in Microsoft's 2019 security update documents (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2008 R2, 2019 (its last full supported year)", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2019", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2008 R2", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to December 2019 (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2019-Jan", "source_type": "primary", "source_access": "open", "published_at": "2019-12-10", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2019 Security Updates\"} ... {\"ProductID\":\"10051\",\"Value\":\"Windows Server 2008 R2 for x64-based Systems Service Pack 1\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to December 2019; per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to December 2019 (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2008 R2/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2008 R2', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "msrc-cves-in-last-supported-year", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 319 for 2019 (the gap is mostly Internet Explorer CVEs listed 'on Windows Server 2008 R2'). Comparator for the 2012 R2 figure of 450 in 2023 (same method). Rapid7's 2020 exposure records for 2008 R2 belong to the eol-history-2003-2008 family (ids rapid7-2020-10-19-unsupported-windows-server-internet-exposed-59pct and rapid7-2020-10-19-unsupported-server-2008-r2-instances-fell-by-over-2-million).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2019-windows-server-2008-r2-cves-385-derived", "citation_text": "385 distinct CVEs listed Windows Server 2008 R2 as an affected product in Microsoft's twelve 2019 monthly security update documents, the version's last full year of extended support before 14 January 2020 (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to December 2019 (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2019-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2019-windows-server-2008-r2-cves-385-derived." }, { "id": "msrc-cvrf-2026-10-windows-server-2012-r2-final-esu-month-cves-673-derived", "family": "exposure-security", "statement": "673 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's October 2026 security update document of 13 October 2026, the last update of the version's paid ESU programme (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 673, "unit": "distinct CVEs listing Windows Server 2012 R2 as an affected product", "display_value": "673", "display_label": "Microsoft's October 2026 security update document, 13 Oct 2026 (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2012 R2, October 2026 (final ESU update)", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2026-10", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2012 R2", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, October 2026 (one document) (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Oct", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"October 2026 Security Updates\"} ... {\"ProductID\":\"10483\",\"Value\":\"Windows Server 2012 R2\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document October 2026 (one document); per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents October 2026 (one document) (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2012 R2/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2012 R2', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives a similar figure (OS rows only). 24 of the 673 carry a Critical severity rating for a 2012 R2 product (count_msrc_extra_output.txt). The same document lists 1,759 CVEs across all Microsoft products.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-10-windows-server-2012-r2-final-esu-month-cves-673-derived", "citation_text": "673 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's October 2026 security update document of 13 October 2026, the last update of the version's paid ESU programme (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, October 2026 (one document) (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Oct). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-10-windows-server-2012-r2-final-esu-month-cves-673-derived." }, { "id": "msrc-cvrf-2023-11-to-2026-10-windows-server-2012-r2-esu-window-cves-2626-derived", "family": "exposure-security", "statement": "2,626 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's security update documents from November 2023 to October 2026, the version's three paid Extended Security Update years (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 2626, "unit": "distinct CVEs listing Windows Server 2012 R2 as an affected product", "display_value": "2,626", "display_label": "Distinct CVEs, November 2023 to October 2026 documents (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "Windows Server 2012 R2, the three ESU years", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2023-11/2026-10", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2012 R2", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, November 2023 to October 2026 (36 documents) (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2023-Nov", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"November 2023 Security Updates\"} ... {\"ProductID\":\"10483\",\"Value\":\"Windows Server 2012 R2\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document November 2023 to October 2026 (36 documents); per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents November 2023 to October 2026 (36 documents) (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2012 R2/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2012 R2', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives a slightly lower figure (OS rows only). 178 of them carry a Critical rating for a 2012 R2 product. Fixes for these CVEs were delivered to 2012 R2 only through ESU (the SUG API lists the 2012 R2 rows under productFamily 'ESU', raw/exposure-security/msrc/_sug-v2-test-2025-11.json). Lower bound: The MSRC API's '2025-Nov' document is titled 'December 2025 Early Security Updates' and holds only 110 early December/third-party entries; the 11 November 2025 Patch Tuesday release (e.g. CVE-2025-62215, added to KEV 2025-11-12) is absent from both the CVRF v3.0 and the Security Update Guide v2.0 APIs as of 2026-10-14, so every 2025 count is a lower bound by roughly one month.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2023-11-to-2026-10-windows-server-2012-r2-esu-window-cves-2626-derived", "citation_text": "2,626 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's security update documents from November 2023 to October 2026, the version's three paid Extended Security Update years (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, November 2023 to October 2026 (36 documents) (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2023-Nov). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2023-11-to-2026-10-windows-server-2012-r2-esu-window-cves-2626-derived." }, { "id": "msrc-cvrf-2023-jan-oct-windows-server-2012-r2-last-supported-months-cves-413-derived", "family": "exposure-security", "statement": "413 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's January to October 2023 security update documents, its last ten months of extended support (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 413, "unit": "distinct CVEs listing Windows Server 2012 R2 as an affected product", "display_value": "413", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012 R2, January to October 2023 (last supported months)", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2023-01/2023-10", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2012 R2", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to October 2023 (10 documents) (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2023-Jan", "source_type": "primary", "source_access": "open", "published_at": "2023-10-10", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2023 Security Updates\"} ... {\"ProductID\":\"10483\",\"Value\":\"Windows Server 2012 R2\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to October 2023 (10 documents); per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to October 2023 (10 documents) (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2012 R2/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2012 R2', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives a slightly lower figure (OS rows only). 52 carry a Critical rating for a 2012 R2 product.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2023-jan-oct-windows-server-2012-r2-last-supported-months-cves-413-derived", "citation_text": "413 distinct CVEs listed Windows Server 2012 R2 as an affected product in Microsoft's January to October 2023 security update documents, its last ten months of extended support (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to October 2023 (10 documents) (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2023-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2023-jan-oct-windows-server-2012-r2-last-supported-months-cves-413-derived." }, { "id": "msrc-cvrf-2026-ytd-windows-server-2012-r2-critical-cves-120-derived", "family": "exposure-security", "statement": "120 CVEs rated Critical for a Windows Server 2012 R2 product appeared in Microsoft's January to October 2026 security update documents, against 56 in all of 2023 (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 120, "unit": "CVEs rated Critical for a Windows Server 2012 R2 product", "display_value": "120", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012 R2, Critical, January to October 2026", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2026-01/2026-10", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2012 R2", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2026 Security Updates\"} ... {\"ProductID\":\"10483\",\"Value\":\"Windows Server 2012 R2\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January to October 2026; per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January to October 2026 (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2012 R2/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2012 R2', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives n/a (Critical subset computed on the broad filter only). Critical = a Vulnerability[].Threats entry of Type 3 (Severity) with Description 'Critical' for at least one matching 2012 R2 product id (count_msrc_extra.py). Critical counts per year for 2012 R2: 2019 45, 2020 59, 2021 51, 2022 52, 2023 56, 2024 21, 2025 33, 2026 to date 120.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-windows-server-2012-r2-critical-cves-120-derived", "citation_text": "120 CVEs rated Critical for a Windows Server 2012 R2 product appeared in Microsoft's January to October 2026 security update documents, against 56 in all of 2023 (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-windows-server-2012-r2-critical-cves-120-derived." }, { "id": "msrc-cvrf-2026-01-windows-server-2008-r2-last-document-listing-28-cves-derived", "family": "exposure-security", "statement": "28 CVEs listed Windows Server 2008 R2 as an affected product in Microsoft's January 2026 security update document, the last monthly document to list the version, six years after its January 2020 end of extended support (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 28, "unit": "distinct CVEs listing Windows Server 2008 R2 as an affected product", "display_value": "28", "display_label": "", "display_hook": null, "row_label": "Windows Server 2008 R2, January 2026 (last document to list it)", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2026-01", "population": "Security vulnerabilities (CVE ids) in Microsoft's monthly security update documents whose affected products include Windows Server 2008 R2", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January 2026 (and February to October 2026, zero) (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan", "source_type": "primary", "source_access": "open", "published_at": "2026-01-13", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"January 2026 Security Updates\"} ... {\"ProductID\":\"10051\",\"Value\":\"Windows Server 2008 R2 for x64-based Systems Service Pack 1\"}", "locator": "ProductTree.FullProductName and Vulnerability[].ProductStatuses (Type 3) in each document January 2026 (and February to October 2026, zero); per-month counts in raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "Distinct CVE ids across the MSRC CVRF v3.0 monthly documents January 2026 (and February to October 2026, zero) (GET https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/ with header Accept: application/json) whose Vulnerability[].ProductStatuses entries of Type 3 (Known Affected) include a product id that ProductTree.FullProductName maps to a name matching the regex /Windows Server 2008 R2/ (the OS rows, their Server Core rows and components listed 'on Windows Server 2008 R2', e.g. .NET Framework or Internet Explorer); a CVE counts once per period even if a later document re-lists it. Documents downloaded and counted 2026-10-14 with raw/exposure-security/count_msrc_cvrf.py (output count_msrc_cvrf_output.txt; series and subsets from count_msrc_extra.py).", "headline": false, "series": "", "history": [], "notes": "Derived count from Microsoft's own machine-readable advisories; the same method as page 1 (windows-11-adoption-statistics). Not comparable with Tenable or ZDI Patch Tuesday totals, which count each release's new CVEs across all products. MSRC revises old documents (every document downloaded carried a CurrentReleaseDate in 2026), so a re-run later can differ slightly; the strict OS-rows-only filter (count_msrc_strict.py) gives 28 (OS rows only). Windows Server 2008 R2 appears as an affected product in every year's documents through 2025 (2023: 363, 2024: 309, 2025: 379) although its public ESU ended in January 2023 and the Azure-only fourth year in January 2024; the lifecycle-dates-esu family should record which support programme ran to January 2026 (not verified here).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-01-windows-server-2008-r2-last-document-listing-28-cves-derived", "citation_text": "28 CVEs listed Windows Server 2008 R2 as an affected product in Microsoft's January 2026 security update document, the last monthly document to list the version, six years after its January 2020 end of extended support (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January 2026 (and February to October 2026, zero) (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jan). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-01-windows-server-2008-r2-last-document-listing-28-cves-derived." }, { "id": "msrc-cvrf-2026-ytd-all-products-cves-12276-derived", "family": "exposure-security", "statement": "12,276 distinct CVEs appeared across all products in Microsoft's ten 2026 monthly security update documents up to 13 October 2026, against 3,990 in 2025 and 2,296 in 2023, including third-party and Azure Linux entries (Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 12276, "unit": "distinct CVEs in Microsoft's monthly security update documents (all products)", "display_value": "12,276", "display_label": "All products incl. third-party and Linux entries (MSRC CVRF, counted 14 Oct 2026)", "display_hook": null, "row_label": "All Microsoft products, January to October 2026", "publisher_short": null, "geography": "Worldwide (all customers of the product)", "period": "2026-01/2026-10", "population": "All vulnerabilities (CVE ids) in Microsoft's monthly CVRF documents, any product, any issuing CNA", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)", "source_url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Oct", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"DocumentTitle\":{\"Value\":\"October 2026 Security Updates\"}", "locator": "Column all_cves in raw/exposure-security/count_msrc_cvrf_output.txt (per month and per year sections)", "derived": true, "formula": "Distinct Vulnerability[].CVE ids across the 2026-Jan .. 2026-Oct CVRF v3.0 documents, no product filter (count_msrc_cvrf.py, run 2026-10-14). 2025: 3,990 (November 2025 Patch Tuesday missing); 2023: 2,296; 2019: 1,068.", "headline": false, "series": "", "history": [], "notes": "Context for the per-version counts: the documents include CVEs Microsoft re-publishes for third-party components (Chromium, Azure Linux/Mariner), which inflate the all-product total; the per-version Windows Server counts are unaffected by Linux entries. Not comparable with Tenable's 1,130 or ZDI's 1,139 Patch Tuesday CVEs for 2025 (page-1 ids tenable-2025-12-10-microsoft-patched-1130-cves-in-2025-patch-tuesday-releases, zdi-2025-12-09-microsoft-total-1139-cves-patched-in-2025), which count new Microsoft CVEs per release.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-all-products-cves-12276-derived", "citation_text": "12,276 distinct CVEs appeared across all products in Microsoft's ten 2026 monthly security update documents up to 13 October 2026, against 3,990 in 2025 and 2,296 in 2023, including third-party and Azure Linux entries (Microsoft MSRC, counted 2026). Source: Microsoft Security Response Center (MSRC), \"Microsoft Security Updates CVRF documents, January to October 2026 (MSRC CVRF API v3.0)\" (https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Oct). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-cvrf-2026-ytd-all-products-cves-12276-derived." }, { "id": "cisa-kev-2026-10-13-catalogue-entries-1741-derived", "family": "exposure-security", "statement": "1,741 vulnerabilities were listed in CISA's Known Exploited Vulnerabilities catalogue at version 2026.10.13, released on 13 October 2026 (CISA, 2026).", "short_statement": null, "short_refs": null, "value": 1741, "unit": "vulnerabilities in the KEV catalogue", "display_value": "1,741", "display_label": "", "display_hook": null, "row_label": "All entries in the catalogue", "publisher_short": null, "geography": "Worldwide (catalogue maintained by the US CISA)", "period": "2026-10-13", "population": "Vulnerabilities CISA has evidence of active exploitation for", "sample_n": null, "publisher": "Cybersecurity and Infrastructure Security Agency (CISA)", "source_title": "CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)", "source_url": "https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"title\": \"CISA Catalog of Known Exploited Vulnerabilities\", \"catalogVersion\": \"2026.10.13\", \"dateReleased\": \"2026-10-13T19:10:43.6568Z\", \"count\": 1741", "locator": "Header fields and vulnerabilities[]; counts in raw/exposure-security/count_kev_output.txt", "derived": true, "formula": "KEV JSON feed downloaded 2026-10-14 (catalogVersion 2026.10.13, dateReleased 2026-10-13T19:10:43Z) to raw/exposure-security/kev/; script raw/exposure-security/count_kev.py, output count_kev_output.txt. count field and len(vulnerabilities) both 1,741.", "headline": false, "series": "", "history": [], "notes": "The catalogue lists vulnerabilities with reliable evidence of exploitation in the wild; this version is dated the day of Windows Server 2012 R2's last ESU update.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-catalogue-entries-1741-derived", "citation_text": "1,741 vulnerabilities were listed in CISA's Known Exploited Vulnerabilities catalogue at version 2026.10.13, released on 13 October 2026 (CISA, 2026). Source: Cybersecurity and Infrastructure Security Agency (CISA), \"CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)\" (https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-catalogue-entries-1741-derived." }, { "id": "cisa-kev-2026-10-13-microsoft-entries-390-derived", "family": "exposure-security", "statement": "390 of the 1,741 entries (22.4%) in CISA's Known Exploited Vulnerabilities catalogue at 13 October 2026 have Microsoft as the vendor, more than any other vendor, ahead of Cisco (100) and Apple (95) (CISA, 2026).", "short_statement": null, "short_refs": null, "value": 390, "unit": "KEV entries with vendorProject Microsoft", "display_value": "390 (22.4%)", "display_label": "KEV catalogue, 13 Oct 2026", "display_hook": null, "row_label": "Microsoft entries", "publisher_short": null, "geography": "Worldwide (catalogue maintained by the US CISA)", "period": "2026-10-13", "population": "KEV catalogue entries", "sample_n": null, "publisher": "Cybersecurity and Infrastructure Security Agency (CISA)", "source_title": "CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)", "source_url": "https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"title\": \"CISA Catalog of Known Exploited Vulnerabilities\", \"catalogVersion\": \"2026.10.13\", \"dateReleased\": \"2026-10-13T19:10:43.6568Z\", \"count\": 1741", "locator": "Header fields and vulnerabilities[]; counts in raw/exposure-security/count_kev_output.txt", "derived": true, "formula": "KEV JSON feed downloaded 2026-10-14 (catalogVersion 2026.10.13, dateReleased 2026-10-13T19:10:43Z) to raw/exposure-security/kev/; script raw/exposure-security/count_kev.py, output count_kev_output.txt. vendorProject.strip().lower() == 'microsoft'; share 390/1,741 = 22.4%; vendor ranking by Counter(vendorProject).", "headline": false, "series": "", "history": [], "notes": "Covers all Microsoft products (Windows, Office, Exchange, IIS, Internet Explorer and others).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-microsoft-entries-390-derived", "citation_text": "390 of the 1,741 entries (22.4%) in CISA's Known Exploited Vulnerabilities catalogue at 13 October 2026 have Microsoft as the vendor, more than any other vendor, ahead of Cisco (100) and Apple (95) (CISA, 2026). Source: Cybersecurity and Infrastructure Security Agency (CISA), \"CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)\" (https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-microsoft-entries-390-derived." }, { "id": "cisa-kev-2026-10-13-microsoft-windows-entries-181-derived", "family": "exposure-security", "statement": "181 entries in CISA's Known Exploited Vulnerabilities catalogue at 13 October 2026 are Microsoft vulnerabilities whose product or name mentions Windows, 51 of them flagged as known to be used in ransomware campaigns (CISA, 2026).", "short_statement": null, "short_refs": null, "value": 181, "unit": "KEV entries (vendor Microsoft) whose product or vulnerabilityName contains the word Windows", "display_value": "181", "display_label": "KEV catalogue, 13 Oct 2026; 51 used in ransomware", "display_hook": null, "row_label": "Microsoft entries naming Windows", "publisher_short": null, "geography": "Worldwide (catalogue maintained by the US CISA)", "period": "2026-10-13", "population": "KEV catalogue entries with vendor Microsoft", "sample_n": null, "publisher": "Cybersecurity and Infrastructure Security Agency (CISA)", "source_title": "CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)", "source_url": "https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"title\": \"CISA Catalog of Known Exploited Vulnerabilities\", \"catalogVersion\": \"2026.10.13\", \"dateReleased\": \"2026-10-13T19:10:43.6568Z\", \"count\": 1741", "locator": "Header fields and vulnerabilities[]; counts in raw/exposure-security/count_kev_output.txt", "derived": true, "formula": "KEV JSON feed downloaded 2026-10-14 (catalogVersion 2026.10.13, dateReleased 2026-10-13T19:10:43Z) to raw/exposure-security/kev/; script raw/exposure-security/count_kev.py, output count_kev_output.txt. vendorProject Microsoft AND regex /\\bwindows\\b/i on product + ' | ' + vulnerabilityName (178 on product alone); knownRansomwareCampaignUse == 'Known' for 51. By dateAdded: 2021 29, 2022 69, 2023 15, 2024 24, 2025 29, 2026 15.", "headline": false, "series": "", "history": [], "notes": "KEV names products generically ('Windows'), not by version, so this count covers client and server Windows alike; see the MSRC cross-reference records for Windows Server 2012 R2, 2016 and 2019.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-microsoft-windows-entries-181-derived", "citation_text": "181 entries in CISA's Known Exploited Vulnerabilities catalogue at 13 October 2026 are Microsoft vulnerabilities whose product or name mentions Windows, 51 of them flagged as known to be used in ransomware campaigns (CISA, 2026). Source: Cybersecurity and Infrastructure Security Agency (CISA), \"CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)\" (https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-microsoft-windows-entries-181-derived." }, { "id": "cisa-kev-2026-10-13-windows-server-named-entries-3-derived", "family": "exposure-security", "statement": "3 entries in CISA's Known Exploited Vulnerabilities catalogue at 13 October 2026 name Windows Server in their product or vulnerability name, and only one of them (CVE-2017-7269, IIS 6.0 on Windows Server 2003 R2) targets a Windows Server version (CISA, 2026).", "short_statement": null, "short_refs": null, "value": 3, "unit": "KEV entries whose product or vulnerabilityName contains 'Windows Server'", "display_value": "3", "display_label": "", "display_hook": null, "row_label": "Entries naming Windows Server", "publisher_short": null, "geography": "Worldwide (catalogue maintained by the US CISA)", "period": "2026-10-13", "population": "KEV catalogue entries with vendor Microsoft", "sample_n": null, "publisher": "Cybersecurity and Infrastructure Security Agency (CISA)", "source_title": "CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)", "source_url": "https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"cveID\": \"CVE-2017-7269\", \"vendorProject\": \"Microsoft\", \"product\": \"Internet Information Services (IIS)\", \"vulnerabilityName\": \"Microsoft Windows Server Buffer Overflow Vulnerability\"", "locator": "vulnerabilities[] entries CVE-2017-7269, CVE-2017-0143, CVE-2025-59287; list in count_kev_output.txt", "derived": true, "formula": "KEV JSON feed downloaded 2026-10-14 (catalogVersion 2026.10.13, dateReleased 2026-10-13T19:10:43Z) to raw/exposure-security/kev/; script raw/exposure-security/count_kev.py, output count_kev_output.txt. vendorProject Microsoft AND regex /windows server/i on product + vulnerabilityName: CVE-2025-59287 (Windows Server Update Service), CVE-2017-7269 (IIS, 'Microsoft Windows Server Buffer Overflow Vulnerability'), CVE-2017-0143 (Windows Server Message Block). Including shortDescription: 8 entries.", "headline": false, "series": "", "history": [], "notes": "The two other matches are component names (WSUS, Server Message Block), not the OS version. Searching shortDescription too gives 8 entries; version strings appear in 3 (Windows Server 2003 R2 in CVE-2017-7269; Windows Server 2008 SP2/R2 SP1 and 2012 in CVE-2017-8540 and CVE-2017-0001). The catalogue cannot by itself count Windows Server exposure.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-windows-server-named-entries-3-derived", "citation_text": "3 entries in CISA's Known Exploited Vulnerabilities catalogue at 13 October 2026 name Windows Server in their product or vulnerability name, and only one of them (CVE-2017-7269, IIS 6.0 on Windows Server 2003 R2) targets a Windows Server version (CISA, 2026). Source: Cybersecurity and Infrastructure Security Agency (CISA), \"CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)\" (https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-windows-server-named-entries-3-derived." }, { "id": "cisa-kev-2026-10-13-msrc-windows-server-2012-r2-entries-132-derived", "family": "exposure-security", "statement": "132 entries in CISA's Known Exploited Vulnerabilities catalogue at 13 October 2026 are Microsoft CVEs whose 2019-2026 MSRC advisories list Windows Server 2012 R2 as an affected product (CISA and Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 132, "unit": "KEV entries whose CVE is listed for Windows Server 2012 R2 in an MSRC CVRF document", "display_value": "132", "display_label": "", "display_hook": null, "row_label": "Entries affecting Windows Server 2012 R2 (joined with Microsoft's advisories)", "publisher_short": null, "geography": "Worldwide (catalogue maintained by the US CISA)", "period": "2026-10-13", "population": "KEV catalogue entries with vendor Microsoft and a 2019-2026 MSRC CVRF record", "sample_n": null, "publisher": "Cybersecurity and Infrastructure Security Agency (CISA); Microsoft Security Response Center (MSRC)", "source_title": "CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)", "source_url": "https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"title\": \"CISA Catalog of Known Exploited Vulnerabilities\", \"catalogVersion\": \"2026.10.13\", \"dateReleased\": \"2026-10-13T19:10:43.6568Z\", \"count\": 1741", "locator": "KEV cross-reference section of raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "KEV JSON feed downloaded 2026-10-14 (catalogVersion 2026.10.13, dateReleased 2026-10-13T19:10:43Z) to raw/exposure-security/kev/; script raw/exposure-security/count_kev.py, output count_kev_output.txt. Join of the KEV feed (vendor Microsoft, 390 entries) with the CVE ids that list /Windows Server 2012 R2/ as Known Affected in the 94 MSRC CVRF v3.0 documents 2019-Jan .. 2026-Oct (count_msrc_cvrf.py, KEV cross-reference section). By KEV dateAdded: 2021 40, 2022 32, 2023 14, 2024 15, 2025 20, 2026 11.", "headline": false, "series": "", "history": [], "notes": "Lower bound: CVEs published before 2019 (EternalBlue CVE-2017-0144, for example) are not in the downloaded documents and so are not mapped, and the November 2025 Patch Tuesday is missing from the MSRC API.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-msrc-windows-server-2012-r2-entries-132-derived", "citation_text": "132 entries in CISA's Known Exploited Vulnerabilities catalogue at 13 October 2026 are Microsoft CVEs whose 2019-2026 MSRC advisories list Windows Server 2012 R2 as an affected product (CISA and Microsoft MSRC, counted 2026). Source: Cybersecurity and Infrastructure Security Agency (CISA); Microsoft Security Response Center (MSRC), \"CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)\" (https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-msrc-windows-server-2012-r2-entries-132-derived." }, { "id": "cisa-kev-2023-10-to-2026-10-windows-server-2012-r2-entries-added-during-esu-49-derived", "family": "exposure-security", "statement": "49 actively exploited Microsoft vulnerabilities affecting Windows Server 2012 R2 were added to CISA's Known Exploited Vulnerabilities catalogue between 11 October 2023 and 13 October 2026, the version's three paid ESU years, 4 of them known to be used by ransomware (CISA and Microsoft MSRC, counted 2026).", "short_statement": "**49** actively exploited vulnerabilities affecting Windows Server 2012 R2 were catalogued by US authorities during its three paid update years (CISA and Microsoft, counted 2026).", "short_refs": null, "value": 49, "unit": "KEV entries listing Windows Server 2012 R2 (via MSRC) added after its end of extended support", "display_value": "49", "display_label": "Added to CISA's KEV catalogue, Oct 2023 to Oct 2026", "display_hook": null, "row_label": "Added during Windows Server 2012 R2's ESU years", "publisher_short": null, "geography": "Worldwide (catalogue maintained by the US CISA)", "period": "2023-10-11/2026-10-13", "population": "KEV catalogue entries with vendor Microsoft whose MSRC advisory lists Windows Server 2012 R2", "sample_n": null, "publisher": "Cybersecurity and Infrastructure Security Agency (CISA); Microsoft Security Response Center (MSRC)", "source_title": "CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)", "source_url": "https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"cveID\": \"CVE-2025-59287\", \"vendorProject\": \"Microsoft\", \"product\": \"Windows\", \"vulnerabilityName\": \"Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability\", \"dateAdded\": \"2025-10-24\"", "locator": "KEV cross-reference list (added to KEV after 2023-10-10) in raw/exposure-security/count_msrc_cvrf_output.txt; CVE-2025-59287 is one of the 49", "derived": true, "formula": "KEV JSON feed downloaded 2026-10-14 (catalogVersion 2026.10.13, dateReleased 2026-10-13T19:10:43Z) to raw/exposure-security/kev/; script raw/exposure-security/count_kev.py, output count_kev_output.txt. As the 132-entry join, restricted to dateAdded 2023-10-11 .. 2026-10-13 (49; knownRansomwareCampaignUse 'Known' for CVE-2024-26169, CVE-2025-26633, CVE-2025-29824, CVE-2021-43226). 46 of the 49 were first published in a November 2023 or later MSRC document (count_msrc_extra_output.txt).", "headline": true, "series": "", "history": [], "notes": "Every one of these fixes reached Windows Server 2012 R2 only through paid ESU. The full list with dates is in count_msrc_cvrf_output.txt. Lower bound for the reasons given on the 132-entry record.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2023-10-to-2026-10-windows-server-2012-r2-entries-added-during-esu-49-derived", "citation_text": "49 actively exploited Microsoft vulnerabilities affecting Windows Server 2012 R2 were added to CISA's Known Exploited Vulnerabilities catalogue between 11 October 2023 and 13 October 2026, the version's three paid ESU years, 4 of them known to be used by ransomware (CISA and Microsoft MSRC, counted 2026). Source: Cybersecurity and Infrastructure Security Agency (CISA); Microsoft Security Response Center (MSRC), \"CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)\" (https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2023-10-to-2026-10-windows-server-2012-r2-entries-added-during-esu-49-derived." }, { "id": "cisa-kev-2026-10-13-msrc-windows-server-2016-entries-150-derived", "family": "exposure-security", "statement": "150 entries in CISA's Known Exploited Vulnerabilities catalogue at 13 October 2026 are Microsoft CVEs whose 2019-2026 MSRC advisories list Windows Server 2016 as an affected product, 59 of them added since October 2023 (CISA and Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 150, "unit": "KEV entries whose CVE is listed for Windows Server 2016 in an MSRC CVRF document", "display_value": "150", "display_label": "", "display_hook": null, "row_label": "Entries affecting Windows Server 2016", "publisher_short": null, "geography": "Worldwide (catalogue maintained by the US CISA)", "period": "2026-10-13", "population": "KEV catalogue entries with vendor Microsoft and a 2019-2026 MSRC CVRF record", "sample_n": null, "publisher": "Cybersecurity and Infrastructure Security Agency (CISA); Microsoft Security Response Center (MSRC)", "source_title": "CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)", "source_url": "https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"title\": \"CISA Catalog of Known Exploited Vulnerabilities\", \"catalogVersion\": \"2026.10.13\", \"dateReleased\": \"2026-10-13T19:10:43.6568Z\", \"count\": 1741", "locator": "KEV cross-reference section of raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "KEV JSON feed downloaded 2026-10-14 (catalogVersion 2026.10.13, dateReleased 2026-10-13T19:10:43Z) to raw/exposure-security/kev/; script raw/exposure-security/count_kev.py, output count_kev_output.txt. Join of the KEV feed (vendor Microsoft) with CVE ids listing /Windows Server 2016/ as Known Affected in the 2019-Jan .. 2026-Oct CVRF documents; 59 with dateAdded after 2023-10-10. KEV entries listed for Windows Server 2016 in 2025 documents: 19; in 2026 documents: 12 (count_msrc_extra_output.txt).", "headline": false, "series": "", "history": [], "notes": "Lower bound for the same reasons as the 2012 R2 join (pre-2019 CVEs not mapped; November 2025 Patch Tuesday missing).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-msrc-windows-server-2016-entries-150-derived", "citation_text": "150 entries in CISA's Known Exploited Vulnerabilities catalogue at 13 October 2026 are Microsoft CVEs whose 2019-2026 MSRC advisories list Windows Server 2016 as an affected product, 59 of them added since October 2023 (CISA and Microsoft MSRC, counted 2026). Source: Cybersecurity and Infrastructure Security Agency (CISA); Microsoft Security Response Center (MSRC), \"CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)\" (https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-msrc-windows-server-2016-entries-150-derived." }, { "id": "cisa-kev-2026-10-13-msrc-windows-server-2019-entries-168-derived", "family": "exposure-security", "statement": "168 entries in CISA's Known Exploited Vulnerabilities catalogue at 13 October 2026 are Microsoft CVEs whose 2019-2026 MSRC advisories list Windows Server 2019 as an affected product, 64 of them added since October 2023 (CISA and Microsoft MSRC, counted 2026).", "short_statement": null, "short_refs": null, "value": 168, "unit": "KEV entries whose CVE is listed for Windows Server 2019 in an MSRC CVRF document", "display_value": "168", "display_label": "", "display_hook": null, "row_label": "Entries affecting Windows Server 2019", "publisher_short": null, "geography": "Worldwide (catalogue maintained by the US CISA)", "period": "2026-10-13", "population": "KEV catalogue entries with vendor Microsoft and a 2019-2026 MSRC CVRF record", "sample_n": null, "publisher": "Cybersecurity and Infrastructure Security Agency (CISA); Microsoft Security Response Center (MSRC)", "source_title": "CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)", "source_url": "https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json", "source_type": "primary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "\"title\": \"CISA Catalog of Known Exploited Vulnerabilities\", \"catalogVersion\": \"2026.10.13\", \"dateReleased\": \"2026-10-13T19:10:43.6568Z\", \"count\": 1741", "locator": "KEV cross-reference section of raw/exposure-security/count_msrc_cvrf_output.txt", "derived": true, "formula": "KEV JSON feed downloaded 2026-10-14 (catalogVersion 2026.10.13, dateReleased 2026-10-13T19:10:43Z) to raw/exposure-security/kev/; script raw/exposure-security/count_kev.py, output count_kev_output.txt. Join of the KEV feed (vendor Microsoft) with CVE ids listing /Windows Server 2019/ as Known Affected in the 2019-Jan .. 2026-Oct CVRF documents; 64 with dateAdded after 2023-10-10. KEV entries listed for Windows Server 2019 in 2025 documents: 20; in 2026 documents: 12 (count_msrc_extra_output.txt).", "headline": false, "series": "", "history": [], "notes": "Lower bound for the same reasons as the 2012 R2 join (pre-2019 CVEs not mapped; November 2025 Patch Tuesday missing).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-msrc-windows-server-2019-entries-168-derived", "citation_text": "168 entries in CISA's Known Exploited Vulnerabilities catalogue at 13 October 2026 are Microsoft CVEs whose 2019-2026 MSRC advisories list Windows Server 2019 as an affected product, 64 of them added since October 2023 (CISA and Microsoft MSRC, counted 2026). Source: Cybersecurity and Infrastructure Security Agency (CISA); Microsoft Security Response Center (MSRC), \"CISA Catalog of Known Exploited Vulnerabilities (JSON feed, catalogVersion 2026.10.13)\" (https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-kev-2026-10-13-msrc-windows-server-2019-entries-168-derived." }, { "id": "shadowserver-2026-03-eol-microsoft-iis-instances-511000", "family": "exposure-security", "statement": "511,000+ internet-facing Microsoft IIS web servers running end-of-life IIS versions were seen in Shadowserver's daily scans in March 2026, the IIS releases that ship with Windows Server 2012 R2 and older (Shadowserver, 2026).", "short_statement": "Scanners saw **511,000** internet-facing web servers on end-of-life IIS versions in March 2026.", "short_refs": null, "value": 511000, "unit": "internet-facing end-of-life Microsoft IIS instances", "display_value": "511,000+", "display_label": "Shadowserver daily scans, March 2026 (IIS 8.5 and older = Windows Server 2012 R2 and older)", "display_hook": null, "row_label": "Shadowserver, March 2026: IIS servers on end-of-life IIS versions", "publisher_short": null, "geography": "Worldwide (IPv4 and IPv6 hosts scanned daily by Shadowserver)", "period": "2026-03", "population": "Internet-reachable HTTP services identifying as Microsoft IIS in Shadowserver's daily scans", "sample_n": null, "publisher": "The Shadowserver Foundation", "source_title": "Shadowserver Dashboard: Trending queries (Attack statistics: Vulnerabilities)", "source_url": "https://dashboard.shadowserver.org/help/trending-queries/", "source_type": "primary", "source_access": "open", "published_at": "2026-03-23", "accessed_at": "2026-10-14", "quote": "Over 511 000 End-of-Life Microsoft IIS instances seen in our daily scans, out of those over 227 000 instances that are beyond the official Microsoft Extended Security Updates (ESU) period", "locator": "Trending queries entry on end-of-life IIS (tags 'eol-iis' and 'eos-iis' in the Vulnerable HTTP report); Wayback snapshot https://web.archive.org/web/20260401142631/https://dashboard.shadowserver.org/help/trending-queries/; saved raw/exposure-security/shadowserver-trending-queries-wayback-2026-04.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Shadowserver tags these 'eol-iis'. IIS versions map to Windows Server releases (IIS 8.5 = 2012 R2, 8.0 = 2012, 7.5 = 2008 R2, 7.0 = 2008, 6.0 = 2003; mapping as given in the Bangladesh CIRT advisory of 24 March 2026, record bgd-cirt-2026-03-24-bangladesh-eol-iis-ip-addresses-452). Counts web servers that announce an IIS banner, not every exposed Windows Server; the live trending-queries page on 2026-10-14 no longer carries this entry (saved as shadowserver-trending-queries-live-2026-10-14.html), so the March 2026 snapshot is the source. Post dated from the linked X status id (2026-03-23).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#shadowserver-2026-03-eol-microsoft-iis-instances-511000", "citation_text": "511,000+ internet-facing Microsoft IIS web servers running end-of-life IIS versions were seen in Shadowserver's daily scans in March 2026, the IIS releases that ship with Windows Server 2012 R2 and older (Shadowserver, 2026). Source: The Shadowserver Foundation, \"Shadowserver Dashboard: Trending queries (Attack statistics: Vulnerabilities)\" (https://dashboard.shadowserver.org/help/trending-queries/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#shadowserver-2026-03-eol-microsoft-iis-instances-511000." }, { "id": "shadowserver-2026-03-iis-instances-beyond-esu-227000", "family": "exposure-security", "statement": "227,000+ internet-facing Microsoft IIS web servers seen by Shadowserver in March 2026 ran IIS versions beyond Microsoft's Extended Security Updates period, that is Windows Server 2008 R2 or older (Shadowserver, 2026).", "short_statement": null, "short_refs": null, "value": 227000, "unit": "internet-facing IIS instances beyond Microsoft's ESU period", "display_value": "227,000+", "display_label": "Beyond ESU, Shadowserver daily scans, March 2026", "display_hook": null, "row_label": "Shadowserver, March 2026: on IIS releases beyond ESU (2008 R2 or older)", "publisher_short": null, "geography": "Worldwide (IPv4 and IPv6 hosts scanned daily by Shadowserver)", "period": "2026-03", "population": "Internet-reachable HTTP services identifying as Microsoft IIS in Shadowserver's daily scans", "sample_n": null, "publisher": "The Shadowserver Foundation", "source_title": "Shadowserver Dashboard: Trending queries (Attack statistics: Vulnerabilities)", "source_url": "https://dashboard.shadowserver.org/help/trending-queries/", "source_type": "primary", "source_access": "open", "published_at": "2026-03-23", "accessed_at": "2026-10-14", "quote": "Over 511 000 End-of-Life Microsoft IIS instances seen in our daily scans, out of those over 227 000 instances that are beyond the official Microsoft Extended Security Updates (ESU) period", "locator": "Trending queries entry on end-of-life IIS (tags 'eol-iis' and 'eos-iis' in the Vulnerable HTTP report); Wayback snapshot https://web.archive.org/web/20260401142631/https://dashboard.shadowserver.org/help/trending-queries/; saved raw/exposure-security/shadowserver-trending-queries-wayback-2026-04.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Shadowserver tags these 'eos-iis' (IIS 7.5 and older = Windows Server 2008 R2 and older, whose ESU ended by January 2024 at the latest). Same caveats as the 511,000 record.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#shadowserver-2026-03-iis-instances-beyond-esu-227000", "citation_text": "227,000+ internet-facing Microsoft IIS web servers seen by Shadowserver in March 2026 ran IIS versions beyond Microsoft's Extended Security Updates period, that is Windows Server 2008 R2 or older (Shadowserver, 2026). Source: The Shadowserver Foundation, \"Shadowserver Dashboard: Trending queries (Attack statistics: Vulnerabilities)\" (https://dashboard.shadowserver.org/help/trending-queries/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#shadowserver-2026-03-iis-instances-beyond-esu-227000." }, { "id": "shadowserver-2026-03-iis-instances-on-windows-server-2012-esu-versions-284000-derived", "family": "exposure-security", "statement": "About 284,000 internet-facing IIS web servers seen by Shadowserver in March 2026 ran the IIS 8.0 and 8.5 releases of Windows Server 2012 and 2012 R2, whose paid ESU ended on 13 October 2026 (Shadowserver data, derived 2026).", "short_statement": null, "short_refs": null, "value": 284000, "unit": "internet-facing IIS instances end-of-life but still within ESU (IIS 8.0/8.5)", "display_value": "~284,000", "display_label": "511,000 end-of-life minus 227,000 beyond ESU, Shadowserver March 2026", "display_hook": null, "row_label": "Shadowserver, March 2026: on the IIS releases of Windows Server 2012 and 2012 R2 (derived)", "publisher_short": null, "geography": "Worldwide (IPv4 and IPv6 hosts scanned daily by Shadowserver)", "period": "2026-03", "population": "Internet-reachable HTTP services identifying as Microsoft IIS in Shadowserver's daily scans", "sample_n": null, "publisher": "The Shadowserver Foundation", "source_title": "Shadowserver Dashboard: Trending queries (Attack statistics: Vulnerabilities)", "source_url": "https://dashboard.shadowserver.org/help/trending-queries/", "source_type": "primary", "source_access": "open", "published_at": "2026-03-23", "accessed_at": "2026-10-14", "quote": "Over 511 000 End-of-Life Microsoft IIS instances seen in our daily scans, out of those over 227 000 instances that are beyond the official Microsoft Extended Security Updates (ESU) period", "locator": "Trending queries entry on end-of-life IIS (tags 'eol-iis' and 'eos-iis' in the Vulnerable HTTP report); Wayback snapshot https://web.archive.org/web/20260401142631/https://dashboard.shadowserver.org/help/trending-queries/; saved raw/exposure-security/shadowserver-trending-queries-wayback-2026-04.html", "derived": true, "formula": "511,000 end-of-life IIS instances ('eol-iis') minus 227,000 instances beyond ESU ('eos-iis') = 284,000 instances end-of-life but within ESU in March 2026; per Microsoft's lifecycle, only Windows Server 2012/2012 R2 (IIS 8.0/8.5) were in ESU then. Both inputs are 'over' figures, so the difference is approximate. Computed 2026-10-14.", "headline": false, "series": "", "history": [], "notes": "Shadowserver does not publish this difference; it is our subtraction. The two inputs are rounded lower bounds ('over 511 000', 'over 227 000'), so the result could be off by a few thousand either way. Not every IIS 8.x host runs unpatched: some had ESU until 13 October 2026.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#shadowserver-2026-03-iis-instances-on-windows-server-2012-esu-versions-284000-derived", "citation_text": "About 284,000 internet-facing IIS web servers seen by Shadowserver in March 2026 ran the IIS 8.0 and 8.5 releases of Windows Server 2012 and 2012 R2, whose paid ESU ended on 13 October 2026 (Shadowserver data, derived 2026). Source: The Shadowserver Foundation, \"Shadowserver Dashboard: Trending queries (Attack statistics: Vulnerabilities)\" (https://dashboard.shadowserver.org/help/trending-queries/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#shadowserver-2026-03-iis-instances-on-windows-server-2012-esu-versions-284000-derived." }, { "id": "bgd-cirt-2026-03-24-bangladesh-eol-iis-ip-addresses-452", "family": "exposure-security", "statement": "452 unique IP addresses in Bangladesh were running end-of-life Microsoft IIS services on 23 March 2026, Bangladesh's national CIRT reported, citing over 511,000 such servers worldwide (BGD e-GOV CIRT, 2026).", "short_statement": null, "short_refs": null, "value": 452, "unit": "IP addresses in Bangladesh running end-of-life IIS", "display_value": "452", "display_label": "", "display_hook": null, "row_label": "Bangladesh national CIRT, March 2026: IP addresses with end-of-life IIS", "publisher_short": null, "geography": "Bangladesh", "period": "2026-03-23", "population": "Internet-facing IP addresses in Bangladesh running end-of-life IIS", "sample_n": null, "publisher": "Bangladesh e-Government Computer Incident Response Team (BGD e-GOV CIRT)", "source_title": "Exposure of End-of-Life Microsoft IIS Servers in Bangladesh", "source_url": "https://cirt.gov.bd/advisories/end-of-life-microsoft-iis-servers-in-bangladesh", "source_type": "primary", "source_access": "open", "published_at": "2026-03-24", "accessed_at": "2026-10-14", "quote": "Alarmingly, as of yesterday, 452 unique IP addresses in Bangladesh were found running outdated IIS services.", "locator": "Advisory body, first paragraph; IIS-to-Windows Server version list under 'Affected versions'; saved raw/exposure-security/bgd-cirt-2026-03-24-eol-iis.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The advisory attributes the 511,000 figure to 'recent global scanning data' (Shadowserver's post of 23 March 2026). It maps IIS 8.5 to Windows Server 2012 R2, 8.0 to 2012, 7.5 to 2008 R2, 7.0 to 2008 and 6.0 to 2003, the mapping used for the derived Shadowserver record. It says 'No ESU exists for older versions (2008/2008 R2 or earlier)', true at the time of writing (their ESU had ended).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bgd-cirt-2026-03-24-bangladesh-eol-iis-ip-addresses-452", "citation_text": "452 unique IP addresses in Bangladesh were running end-of-life Microsoft IIS services on 23 March 2026, Bangladesh's national CIRT reported, citing over 511,000 such servers worldwide (BGD e-GOV CIRT, 2026). Source: Bangladesh e-Government Computer Incident Response Team (BGD e-GOV CIRT), \"Exposure of End-of-Life Microsoft IIS Servers in Bangladesh\" (https://cirt.gov.bd/advisories/end-of-life-microsoft-iis-servers-in-bangladesh). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bgd-cirt-2026-03-24-bangladesh-eol-iis-ip-addresses-452." }, { "id": "techradar-2023-12-04-shadowserver-eol-exchange-servers-almost-20000", "family": "exposure-security", "statement": "Almost 20,000 internet-connected Microsoft Exchange servers ran end-of-life Exchange versions in December 2023, according to a Shadowserver report summarised by TechRadar (TechRadar, 2023).", "short_statement": null, "short_refs": null, "value": 20000, "unit": "internet-connected end-of-life Exchange servers", "display_value": "~20,000", "display_label": "", "display_hook": null, "row_label": "Shadowserver via TechRadar, December 2023: end-of-life Exchange servers", "publisher_short": null, "geography": "Worldwide (more than half in Europe, about 6,000 in the US)", "period": "2023-12", "population": "Internet-connected Microsoft Exchange servers seen in Shadowserver scans", "sample_n": null, "publisher": "TechRadar (reporting The Shadowserver Foundation)", "source_title": "Thousands of Microsoft Exchange servers left open to attack", "source_url": "https://www.techradar.com/pro/security/thousands-of-microsoft-exchange-servers-left-open-to-attack", "source_type": "secondary", "source_access": "open", "published_at": "2023-12-04", "accessed_at": "2026-10-14", "quote": "A new report from The ShadowServer Foundation uncovered almost 20,000 internet-connected servers running versions of software that reached end-of-life (EoL) and are as such no longer receiving critical security updates.", "locator": "Article body, paragraph 2; saved raw/exposure-security/techradar-2023-12-shadowserver-exchange-eol.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Exchange runs on Windows Server; Exchange 2013 left support on 11 April 2023. The same article reports a Macnica researcher's Shodan count of 30,000+ (26,000+ Exchange 2013, 4,000+ Exchange 2010, 275 Exchange 2007, late November 2023), a separate method. Shadowserver's own post (December 2023) was not retrieved; the December 2023 snapshot of its trending-queries page (shadowserver-trending-queries-wayback-2023-12.html) holds other items.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techradar-2023-12-04-shadowserver-eol-exchange-servers-almost-20000", "citation_text": "Almost 20,000 internet-connected Microsoft Exchange servers ran end-of-life Exchange versions in December 2023, according to a Shadowserver report summarised by TechRadar (TechRadar, 2023). Source: TechRadar (reporting The Shadowserver Foundation), \"Thousands of Microsoft Exchange servers left open to attack\" (https://www.techradar.com/pro/security/thousands-of-microsoft-exchange-servers-left-open-to-attack). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techradar-2023-12-04-shadowserver-eol-exchange-servers-almost-20000." }, { "id": "cybernews-2021-09-09-unsupported-iis-web-servers-over-2-million", "family": "exposure-security", "statement": "2 million+ internet-facing web servers ran Microsoft IIS versions no longer supported by Microsoft in September 2021, in Cybernews' Shodan search after excluding honeypots (Cybernews, 2021).", "short_statement": null, "short_refs": null, "value": 2000000, "unit": "internet-facing web servers on unsupported IIS versions", "display_value": "2 million+", "display_label": "", "display_hook": null, "row_label": "Cybernews via Shodan, September 2021: web servers on unsupported IIS", "publisher_short": null, "geography": "Worldwide (Shodan search results)", "period": "2021-09", "population": "Internet-facing web servers announcing a legacy Microsoft IIS version in Shodan, honeypots excluded", "sample_n": null, "publisher": "Cybernews (research team)", "source_title": "Millions of Microsoft web servers powered by vulnerable legacy software", "source_url": "https://cybernews.com/security/millions-of-microsoft-web-servers-powered-by-vulnerable-legacy-software/", "source_type": "secondary", "source_access": "open", "published_at": "2021-09-09", "accessed_at": "2026-10-14", "quote": "While 72% of these servers were honeypots used as bait by researchers and security teams, more than 2 million of the instances we discovered were actually running on vulnerable software that is no longer supported by Microsoft.", "locator": "Section '2 million Microsoft IIS servers are vulnerable to threat actors'; saved raw/exposure-security/cybernews-legacy-iis.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Cybernews ran the Shodan search itself and published the counts (7,335,868 hits before removing an estimated 72% honeypots). A media outlet's own research, so labelled secondary; method details are thin. China (679,941) and the US (581,708) led.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cybernews-2021-09-09-unsupported-iis-web-servers-over-2-million", "citation_text": "2 million+ internet-facing web servers ran Microsoft IIS versions no longer supported by Microsoft in September 2021, in Cybernews' Shodan search after excluding honeypots (Cybernews, 2021). Source: Cybernews (research team), \"Millions of Microsoft web servers powered by vulnerable legacy software\" (https://cybernews.com/security/millions-of-microsoft-web-servers-powered-by-vulnerable-legacy-software/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cybernews-2021-09-09-unsupported-iis-web-servers-over-2-million." }, { "id": "cybernews-2021-09-09-iis-7-5-windows-server-2008-r2-instances-1376216", "family": "exposure-security", "statement": "1,376,216 internet-facing web servers ran IIS 7.5, the Windows Server 2008 R2 release of IIS, in September 2021, 20 months after its end of support, in Cybernews' Shodan search (Cybernews, 2021).", "short_statement": null, "short_refs": null, "value": 1376216, "unit": "internet-facing IIS 7.5 instances", "display_value": "1,376,216", "display_label": "", "display_hook": null, "row_label": "Cybernews via Shodan, September 2021: IIS 7.5 (Windows Server 2008 R2)", "publisher_short": null, "geography": "Worldwide (Shodan search results)", "period": "2021-09", "population": "Internet-facing web servers announcing a legacy Microsoft IIS version in Shodan, honeypots excluded", "sample_n": null, "publisher": "Cybernews (research team)", "source_title": "Millions of Microsoft web servers powered by vulnerable legacy software", "source_url": "https://cybernews.com/security/millions-of-microsoft-web-servers-powered-by-vulnerable-legacy-software/", "source_type": "secondary", "source_access": "open", "published_at": "2021-09-09", "accessed_at": "2026-10-14", "quote": "version 7.5, which was discontinued by Microsoft on January 14, 2020, seems to be by far the most popular Microsoft IIS version run by the vulnerable servers ... a grand total of 1,376,216 instances across the web.", "locator": "Section '1.4 million vulnerable servers run IIS version 7.5'; saved raw/exposure-security/cybernews-legacy-iis.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "IIS 6.0 (Windows Server 2003): 167,870; IIS 7.0 (Windows Server 2008): 47,620 in the same search. Compare Rapid7's 2020 Project Sonar records (eol-history-2003-2008 family, ids rapid7-2020-10-19-unsupported-windows-server-internet-exposed-59pct and rapid7-2020-10-19-unsupported-server-2008-r2-instances-fell-by-over-2-million): different scanner and measure.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cybernews-2021-09-09-iis-7-5-windows-server-2008-r2-instances-1376216", "citation_text": "1,376,216 internet-facing web servers ran IIS 7.5, the Windows Server 2008 R2 release of IIS, in September 2021, 20 months after its end of support, in Cybernews' Shodan search (Cybernews, 2021). Source: Cybernews (research team), \"Millions of Microsoft web servers powered by vulnerable legacy software\" (https://cybernews.com/security/millions-of-microsoft-web-servers-powered-by-vulnerable-legacy-software/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cybernews-2021-09-09-iis-7-5-windows-server-2008-r2-instances-1376216." }, { "id": "bitsight-2019-07-23-bluekeep-vulnerable-exposed-systems-788214", "family": "exposure-security", "statement": "788,214 internet-exposed systems were still vulnerable to BlueKeep on 23 July 2019, a flaw affecting only Windows XP, Windows 7 and Windows Server 2003, 2008 and 2008 R2, in Bitsight's scans (Bitsight, 2019).", "short_statement": null, "short_refs": null, "value": 788214, "unit": "internet-exposed systems vulnerable to CVE-2019-0708", "display_value": "788,214", "display_label": "", "display_hook": null, "row_label": "Bitsight, July 2019: exposed systems vulnerable to BlueKeep", "publisher_short": null, "geography": "Worldwide (Bitsight internet scans)", "period": "2019-07-23", "population": "Internet-exposed RDP systems vulnerable to BlueKeep (CVE-2019-0708): Windows XP, 7, Server 2003, 2008 and 2008 R2", "sample_n": null, "publisher": "Bitsight", "source_title": "The State of BlueKeep Exposure: Insight Into Affected Systems", "source_url": "https://www.bitsight.com/blog/state-bluekeep-exposure-insight-into-affected-systems", "source_type": "manufacturer", "source_access": "open", "published_at": "2019-08-07", "accessed_at": "2026-10-14", "quote": "As of July 23, 2019, approximately 788,214 systems remain vulnerable, a decrease of almost 20,000 systems from July 2nd", "locator": "Post body, paragraph 2; saved raw/exposure-security/bitsight-2019-bluekeep-exposure.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor telemetry. 972,829 vulnerable exposed systems on 31 May 2019; Bitsight identified the OS with high confidence for 462,923 (58.73%) on 23 July. Windows Server 2008 R2 showed the largest change between observations; per-family counts are only in charts (images), not recorded.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-2019-07-23-bluekeep-vulnerable-exposed-systems-788214", "citation_text": "788,214 internet-exposed systems were still vulnerable to BlueKeep on 23 July 2019, a flaw affecting only Windows XP, Windows 7 and Windows Server 2003, 2008 and 2008 R2, in Bitsight's scans (Bitsight, 2019). Source: Bitsight, \"The State of BlueKeep Exposure: Insight Into Affected Systems\" (https://www.bitsight.com/blog/state-bluekeep-exposure-insight-into-affected-systems). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-2019-07-23-bluekeep-vulnerable-exposed-systems-788214." }, { "id": "bitsight-2019-07-23-bluekeep-exposed-systems-still-unpatched-81pct", "family": "exposure-security", "statement": "81% of the internet-exposed systems vulnerable to BlueKeep on 31 May 2019 were still unpatched on 23 July 2019, ten weeks after Microsoft's fix, in Bitsight's scans (Bitsight, 2019).", "short_statement": null, "short_refs": null, "value": 81, "unit": "% of vulnerable exposed systems still unpatched", "display_value": "81%", "display_label": "", "display_hook": null, "row_label": "Bitsight, July 2019: still unpatched ten weeks after the fix", "publisher_short": null, "geography": "Worldwide (Bitsight internet scans)", "period": "2019-05-31/2019-07-23", "population": "Internet-exposed RDP systems vulnerable to BlueKeep (CVE-2019-0708): Windows XP, 7, Server 2003, 2008 and 2008 R2", "sample_n": null, "publisher": "Bitsight", "source_title": "The State of BlueKeep Exposure: Insight Into Affected Systems", "source_url": "https://www.bitsight.com/blog/state-bluekeep-exposure-insight-into-affected-systems", "source_type": "manufacturer", "source_access": "open", "published_at": "2019-08-07", "accessed_at": "2026-10-14", "quote": "As such, about 81% of the exposed vulnerable systems observed on May 31 remain unpatched.", "locator": "Post body, paragraph 2; saved raw/exposure-security/bitsight-2019-bluekeep-exposure.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor telemetry. Microsoft shipped the fix on 14 May 2019, including for out-of-support Windows Server 2003 and XP (record msrc-2019-05-14-bluekeep-fix-for-out-of-support-windows-server-2003).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-2019-07-23-bluekeep-exposed-systems-still-unpatched-81pct", "citation_text": "81% of the internet-exposed systems vulnerable to BlueKeep on 31 May 2019 were still unpatched on 23 July 2019, ten weeks after Microsoft's fix, in Bitsight's scans (Bitsight, 2019). Source: Bitsight, \"The State of BlueKeep Exposure: Insight Into Affected Systems\" (https://www.bitsight.com/blog/state-bluekeep-exposure-insight-into-affected-systems). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-2019-07-23-bluekeep-exposed-systems-still-unpatched-81pct." }, { "id": "rapid7-2017-05-16-internet-exposed-smb-windows-devices-over-800000", "family": "exposure-security", "statement": "800,000+ internet-connected Windows devices exposed SMB on port 445 in May 2017, the vast majority of them Windows server operating systems, in Rapid7's Project Sonar scan during the WannaCry outbreak (Rapid7, 2017).", "short_statement": null, "short_refs": null, "value": 800000, "unit": "internet-connected Windows devices exposing SMB (port 445)", "display_value": "800,000+", "display_label": "", "display_hook": null, "row_label": "Rapid7, May 2017: Windows devices exposing SMB", "publisher_short": null, "geography": "Worldwide (Rapid7 Project Sonar)", "period": "2017-05", "population": "Internet-connected devices exposing SMB on TCP 445, fingerprinted by Rapid7 recog", "sample_n": null, "publisher": "Rapid7", "source_title": "WannaCry Update: Vulnerable SMB Shares Are Widely Deployed And People Are Scanning For Them (Port 445 Exploit)", "source_url": "https://www.rapid7.com/blog/post/2017/05/16/update-on-wannacry-vulnerable-smb-shares-are-widely-deployed-and-people-are-scanning-for-them/", "source_type": "manufacturer", "source_access": "open", "published_at": "2017-05-16", "accessed_at": "2026-10-14", "quote": "We find that there are over 1 million internet-connected devices that expose SMB on port 445. Of those, over 800,000 run Windows", "locator": "Section on Project Sonar results, paragraph 2; saved raw/exposure-security/rapid7-2017-05-16-wannacry-smb.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor telemetry. The post adds 'The vast majority of these are server-based Windows operating systems' with versions spanning the release history, including old ones. Rapid7's 2020 end-of-life Windows Server counts belong to the eol-history-2003-2008 family (ids rapid7-2020-10-19-...).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#rapid7-2017-05-16-internet-exposed-smb-windows-devices-over-800000", "citation_text": "800,000+ internet-connected Windows devices exposed SMB on port 445 in May 2017, the vast majority of them Windows server operating systems, in Rapid7's Project Sonar scan during the WannaCry outbreak (Rapid7, 2017). Source: Rapid7, \"WannaCry Update: Vulnerable SMB Shares Are Widely Deployed And People Are Scanning For Them (Port 445 Exploit)\" (https://www.rapid7.com/blog/post/2017/05/16/update-on-wannacry-vulnerable-smb-shares-are-widely-deployed-and-people-are-scanning-for-them/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#rapid7-2017-05-16-internet-exposed-smb-windows-devices-over-800000." }, { "id": "rapid7-2020-09-18-nicer-smb-exposed-windows-server-nodes-298296", "family": "exposure-security", "statement": "298,296 internet-exposed nodes offering SMB file sharing were Windows Server systems in Rapid7's 2020 National / Industry / Cloud Exposure Report scan, half of the 593,749 SMB nodes found (Rapid7, 2020).", "short_statement": null, "short_refs": null, "value": 298296, "unit": "internet-exposed SMB nodes identified as Windows (Server)", "display_value": "298,296", "display_label": "", "display_hook": null, "row_label": "Rapid7, 2020: Windows Server nodes exposing SMB", "publisher_short": null, "geography": "Worldwide (Rapid7 Project Sonar)", "period": "2020", "population": "Internet-exposed SMB services found by Project Sonar in 2020", "sample_n": null, "publisher": "Rapid7", "source_title": "NICER Protocol Deep Dive: Internet Exposure of SMB", "source_url": "https://www.rapid7.com/blog/post/2020/09/18/nicer-protocol-deep-dive-internet-exposure-of-smb/", "source_type": "manufacturer", "source_access": "open", "published_at": "2020-09-18", "accessed_at": "2026-10-14", "quote": "HOW MANY: 593,749 discovered nodes ... Windows (Server) 298,296 ... Windows (Desktop) 110,340", "locator": "Summary box ('HOW MANY') and the SMB node table under 'Exposure information'; saved raw/exposure-security/rapid7-2020-09-18-nicer-smb.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor telemetry. 298,296 / 593,749 = 50.2%. Exposure fell 16% from 2019, 'thanks mostly to ISPs'. Version split not given here; Rapid7's separate October 2020 post on end-of-life Windows Server (59% unsupported) is a history-family record.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#rapid7-2020-09-18-nicer-smb-exposed-windows-server-nodes-298296", "citation_text": "298,296 internet-exposed nodes offering SMB file sharing were Windows Server systems in Rapid7's 2020 National / Industry / Cloud Exposure Report scan, half of the 593,749 SMB nodes found (Rapid7, 2020). Source: Rapid7, \"NICER Protocol Deep Dive: Internet Exposure of SMB\" (https://www.rapid7.com/blog/post/2020/09/18/nicer-protocol-deep-dive-internet-exposure-of-smb/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#rapid7-2020-09-18-nicer-smb-exposed-windows-server-nodes-298296." }, { "id": "shodan-2017-06-15-smb-services-vulnerable-to-ms17-010-91081", "family": "exposure-security", "statement": "91,081 internet-facing SMB services were still vulnerable to MS17-010, the flaw WannaCry exploited, a month after the outbreak, out of 2,306,820 SMB services Shodan saw in June 2017 (Shodan, 2017).", "short_statement": null, "short_refs": null, "value": 91081, "unit": "internet-facing SMB services vulnerable to MS17-010", "display_value": "91,081", "display_label": "", "display_hook": null, "row_label": "Shodan, June 2017: SMB services still vulnerable to WannaCry's flaw", "publisher_short": null, "geography": "Worldwide (Shodan crawlers)", "period": "2017-06-15", "population": "SMB services visible to Shodan on the internet", "sample_n": null, "publisher": "Shodan", "source_title": "Analyzing Post-WannaCry SMB Exposure", "source_url": "http://blog.shodan.io/analyzing-post-wannacry-smb-exposure/", "source_type": "manufacturer", "source_access": "open", "published_at": "2017-06-15", "accessed_at": "2026-10-14", "quote": "However, there are still at least 91,081 devices vulnerable to MS17-010 which means that there remains a significant exposure of vulnerable SMB services on the Internet.", "locator": "Post body, 'DoublePulsar and MS17-010' section; saved raw/exposure-security/shodan-2017-post-wannacry-smb.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Shodan's own published count, not a query we ran. 96% of SMB services supported SMBv1; 16,206 had DoublePulsar. Not split by Windows version; MS17-010 fixes for out-of-support Windows Server 2003 were released only after the outbreak (record msrc-2017-05-13-wannacrypt-fix-for-custom-support-windows-server-2003).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#shodan-2017-06-15-smb-services-vulnerable-to-ms17-010-91081", "citation_text": "91,081 internet-facing SMB services were still vulnerable to MS17-010, the flaw WannaCry exploited, a month after the outbreak, out of 2,306,820 SMB services Shodan saw in June 2017 (Shodan, 2017). Source: Shodan, \"Analyzing Post-WannaCry SMB Exposure\" (http://blog.shodan.io/analyzing-post-wannacry-smb-exposure/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#shodan-2017-06-15-smb-services-vulnerable-to-ms17-010-91081." }, { "id": "bleepingcomputer-2017-05-20-kaspersky-wannacry-infections-windows-7-98pct", "family": "exposure-security", "statement": "98% of documented WannaCry infections ran Windows 7, with Windows Server 2008 R2 the second most hit version, according to Kaspersky Lab figures reported in May 2017, contrary to the belief that Windows XP was to blame (BleepingComputer, 2017).", "short_statement": null, "short_refs": null, "value": 98, "unit": "% of documented WannaCry infections", "display_value": "98%+", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Kaspersky telemetry)", "period": "2017-05", "population": "WannaCry infections documented by Kaspersky Lab", "sample_n": null, "publisher": "BleepingComputer (reporting Kaspersky Lab)", "source_title": "Over 98% of All WannaCry Victims Were Using Windows 7", "source_url": "https://www.bleepingcomputer.com/news/security/over-98-percent-of-all-wannacry-victims-were-using-windows-7/", "source_type": "secondary", "source_access": "open", "published_at": "2017-05-20", "accessed_at": "2026-10-14", "quote": "Numbers released by Kaspersky Lab on Friday reveal that over 98% of all documented WannaCry infections were running versions of the Windows 7 operating system.", "locator": "Article body, paragraphs 1 and 3 ('The second and third most targeted OS versions were Windows Server 2008 R2, and Windows 10'); saved raw/exposure-security/bleepingcomputer-2017-05-wannacry-98pct-windows7.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Primary is a tweet by Kaspersky's Costin Raiu (image), not retrieved. SecurityWeek (22 May 2017) gives Windows 7 x64 60.35% and x86 31.72% (saved securityweek-2017-05-wannacry-windows7.html). Windows 7 and 2008 R2 were still supported in 2017: WannaCry is evidence of unpatched rather than unsupported systems.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bleepingcomputer-2017-05-20-kaspersky-wannacry-infections-windows-7-98pct", "citation_text": "98% of documented WannaCry infections ran Windows 7, with Windows Server 2008 R2 the second most hit version, according to Kaspersky Lab figures reported in May 2017, contrary to the belief that Windows XP was to blame (BleepingComputer, 2017). Source: BleepingComputer (reporting Kaspersky Lab), \"Over 98% of All WannaCry Victims Were Using Windows 7\" (https://www.bleepingcomputer.com/news/security/over-98-percent-of-all-wannacry-victims-were-using-windows-7/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bleepingcomputer-2017-05-20-kaspersky-wannacry-infections-windows-7-98pct." }, { "id": "microsoft-sir-v18-4q14-infection-rate-windows-server-2003-sp2-6-5-ccm", "family": "exposure-security", "statement": "6.5 of every 1,000 computers running Windows Server 2003 SP2 were cleaned of malware by Microsoft's Malicious Software Removal Tool in the fourth quarter of 2014 (Microsoft Security Intelligence Report, 2015).", "short_statement": null, "short_refs": null, "value": 6.5, "unit": "computers cleaned per 1,000 scanned (CCM)", "display_value": "6.5 per 1,000", "display_label": "Computers cleaned per 1,000 scanned, 4Q14 (Microsoft SIR v18)", "display_hook": null, "row_label": "Windows Server 2003 SP2", "publisher_short": null, "geography": "Worldwide (computers running Microsoft's Malicious Software Removal Tool)", "period": "2014-Q4", "population": "Computers running each Windows version that executed Microsoft's Malicious Software Removal Tool, normalised per 1,000", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Security Intelligence Report, Volume 18 (July through December 2014)", "source_url": "http://download.microsoft.com/download/7/1/A/71ABB4EC-E255-4DAF-9496-A46D67D875CD/Microsoft_Security_Intelligence_Report_Volume_18_English.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-05-19", "accessed_at": "2026-10-14", "quote": "Figure 33. Infection rate by client and server operating system in 3Q14 and 4Q14", "locator": "Figure 33 'Infection rate by client and server operating system in 3Q14 and 4Q14', PDF page 63-64 (printed page 53-54); chart data labels in raw/exposure-security/pdf/sir-v18.txt", "derived": false, "formula": null, "headline": false, "series": "microsoft-sir-v18-infection-rate-by-server-os-4q14", "history": [], "notes": "Microsoft telemetry from MSRT executions, normalised per 1,000 computers per version. Values read from Figure 33's data labels: the labels run 3Q14 then 4Q14 in platform order (Vista SP2, 7 SP1, 8 RTM, 8.1 RTM, Server 2003 SP2, 2008 SP2, 2008 R2 SP1, 2012 RTM, 2012 R2 RTM); the order is confirmed by the report's text (Vista SP2 4Q14 5.2, Server 2008 SP2 3.7, Windows 8 5.0, Server 2012 1.2). Windows Server 2003 was in its last year of support. Volume 18 is the only SIR edition in v15-v22 whose infection-rate chart lists every server version with readable data labels (v15 shows only Server 2012 at 0.4 CCM in 2Q13; v16's 3Q13/4Q13 chart labels cannot be mapped reliably; v17 and v19-v22 do not chart server versions). Server 2003 SP2's 6.5 is 13 times Server 2012 R2's 0.5 in the same quarter (6.8 in 3Q14).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-sir-v18-4q14-infection-rate-windows-server-2003-sp2-6-5-ccm", "citation_text": "6.5 of every 1,000 computers running Windows Server 2003 SP2 were cleaned of malware by Microsoft's Malicious Software Removal Tool in the fourth quarter of 2014 (Microsoft Security Intelligence Report, 2015). Source: Microsoft, \"Microsoft Security Intelligence Report, Volume 18 (July through December 2014)\" (http://download.microsoft.com/download/7/1/A/71ABB4EC-E255-4DAF-9496-A46D67D875CD/Microsoft_Security_Intelligence_Report_Volume_18_English.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-sir-v18-4q14-infection-rate-windows-server-2003-sp2-6-5-ccm." }, { "id": "microsoft-sir-v18-4q14-infection-rate-windows-server-2008-sp2-3-7-ccm", "family": "exposure-security", "statement": "3.7 of every 1,000 computers running Windows Server 2008 SP2 were cleaned of malware by Microsoft's Malicious Software Removal Tool in the fourth quarter of 2014 (Microsoft Security Intelligence Report, 2015).", "short_statement": null, "short_refs": null, "value": 3.7, "unit": "computers cleaned per 1,000 scanned (CCM)", "display_value": "3.7 per 1,000", "display_label": "", "display_hook": null, "row_label": "Windows Server 2008 SP2", "publisher_short": null, "geography": "Worldwide (computers running Microsoft's Malicious Software Removal Tool)", "period": "2014-Q4", "population": "Computers running each Windows version that executed Microsoft's Malicious Software Removal Tool, normalised per 1,000", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Security Intelligence Report, Volume 18 (July through December 2014)", "source_url": "http://download.microsoft.com/download/7/1/A/71ABB4EC-E255-4DAF-9496-A46D67D875CD/Microsoft_Security_Intelligence_Report_Volume_18_English.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-05-19", "accessed_at": "2026-10-14", "quote": "Windows Vista SP2, with a 4Q14 CCM of 5.2, shares a code base with Windows Server 2008 SP2, with a 4Q14 CCM of 3.7", "locator": "Figure 33 'Infection rate by client and server operating system in 3Q14 and 4Q14', PDF page 63-64 (printed page 53-54); chart data labels in raw/exposure-security/pdf/sir-v18.txt", "derived": false, "formula": null, "headline": false, "series": "microsoft-sir-v18-infection-rate-by-server-os-4q14", "history": [], "notes": "Microsoft telemetry from MSRT executions, normalised per 1,000 computers per version. Values read from Figure 33's data labels: the labels run 3Q14 then 4Q14 in platform order (Vista SP2, 7 SP1, 8 RTM, 8.1 RTM, Server 2003 SP2, 2008 SP2, 2008 R2 SP1, 2012 RTM, 2012 R2 RTM); the order is confirmed by the report's text (Vista SP2 4Q14 5.2, Server 2008 SP2 3.7, Windows 8 5.0, Server 2012 1.2). Windows Server 2003 was in its last year of support. Volume 18 is the only SIR edition in v15-v22 whose infection-rate chart lists every server version with readable data labels (v15 shows only Server 2012 at 0.4 CCM in 2Q13; v16's 3Q13/4Q13 chart labels cannot be mapped reliably; v17 and v19-v22 do not chart server versions).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-sir-v18-4q14-infection-rate-windows-server-2008-sp2-3-7-ccm", "citation_text": "3.7 of every 1,000 computers running Windows Server 2008 SP2 were cleaned of malware by Microsoft's Malicious Software Removal Tool in the fourth quarter of 2014 (Microsoft Security Intelligence Report, 2015). Source: Microsoft, \"Microsoft Security Intelligence Report, Volume 18 (July through December 2014)\" (http://download.microsoft.com/download/7/1/A/71ABB4EC-E255-4DAF-9496-A46D67D875CD/Microsoft_Security_Intelligence_Report_Volume_18_English.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-sir-v18-4q14-infection-rate-windows-server-2008-sp2-3-7-ccm." }, { "id": "microsoft-sir-v18-4q14-infection-rate-windows-server-2008-r2-sp1-2-5-ccm", "family": "exposure-security", "statement": "2.5 of every 1,000 computers running Windows Server 2008 R2 SP1 were cleaned of malware by Microsoft's Malicious Software Removal Tool in the fourth quarter of 2014 (Microsoft Security Intelligence Report, 2015).", "short_statement": null, "short_refs": null, "value": 2.5, "unit": "computers cleaned per 1,000 scanned (CCM)", "display_value": "2.5 per 1,000", "display_label": "", "display_hook": null, "row_label": "Windows Server 2008 R2 SP1", "publisher_short": null, "geography": "Worldwide (computers running Microsoft's Malicious Software Removal Tool)", "period": "2014-Q4", "population": "Computers running each Windows version that executed Microsoft's Malicious Software Removal Tool, normalised per 1,000", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Security Intelligence Report, Volume 18 (July through December 2014)", "source_url": "http://download.microsoft.com/download/7/1/A/71ABB4EC-E255-4DAF-9496-A46D67D875CD/Microsoft_Security_Intelligence_Report_Volume_18_English.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-05-19", "accessed_at": "2026-10-14", "quote": "Figure 33. Infection rate by client and server operating system in 3Q14 and 4Q14", "locator": "Figure 33 'Infection rate by client and server operating system in 3Q14 and 4Q14', PDF page 63-64 (printed page 53-54); chart data labels in raw/exposure-security/pdf/sir-v18.txt", "derived": false, "formula": null, "headline": false, "series": "microsoft-sir-v18-infection-rate-by-server-os-4q14", "history": [], "notes": "Microsoft telemetry from MSRT executions, normalised per 1,000 computers per version. Values read from Figure 33's data labels: the labels run 3Q14 then 4Q14 in platform order (Vista SP2, 7 SP1, 8 RTM, 8.1 RTM, Server 2003 SP2, 2008 SP2, 2008 R2 SP1, 2012 RTM, 2012 R2 RTM); the order is confirmed by the report's text (Vista SP2 4Q14 5.2, Server 2008 SP2 3.7, Windows 8 5.0, Server 2012 1.2). Windows Server 2003 was in its last year of support. Volume 18 is the only SIR edition in v15-v22 whose infection-rate chart lists every server version with readable data labels (v15 shows only Server 2012 at 0.4 CCM in 2Q13; v16's 3Q13/4Q13 chart labels cannot be mapped reliably; v17 and v19-v22 do not chart server versions).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-sir-v18-4q14-infection-rate-windows-server-2008-r2-sp1-2-5-ccm", "citation_text": "2.5 of every 1,000 computers running Windows Server 2008 R2 SP1 were cleaned of malware by Microsoft's Malicious Software Removal Tool in the fourth quarter of 2014 (Microsoft Security Intelligence Report, 2015). Source: Microsoft, \"Microsoft Security Intelligence Report, Volume 18 (July through December 2014)\" (http://download.microsoft.com/download/7/1/A/71ABB4EC-E255-4DAF-9496-A46D67D875CD/Microsoft_Security_Intelligence_Report_Volume_18_English.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-sir-v18-4q14-infection-rate-windows-server-2008-r2-sp1-2-5-ccm." }, { "id": "microsoft-sir-v18-4q14-infection-rate-windows-server-2012-1-2-ccm", "family": "exposure-security", "statement": "1.2 of every 1,000 computers running Windows Server 2012 were cleaned of malware by Microsoft's Malicious Software Removal Tool in the fourth quarter of 2014 (Microsoft Security Intelligence Report, 2015).", "short_statement": null, "short_refs": null, "value": 1.2, "unit": "computers cleaned per 1,000 scanned (CCM)", "display_value": "1.2 per 1,000", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012", "publisher_short": null, "geography": "Worldwide (computers running Microsoft's Malicious Software Removal Tool)", "period": "2014-Q4", "population": "Computers running each Windows version that executed Microsoft's Malicious Software Removal Tool, normalised per 1,000", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Security Intelligence Report, Volume 18 (July through December 2014)", "source_url": "http://download.microsoft.com/download/7/1/A/71ABB4EC-E255-4DAF-9496-A46D67D875CD/Microsoft_Security_Intelligence_Report_Volume_18_English.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-05-19", "accessed_at": "2026-10-14", "quote": "Windows 8, with a CCM of 5.0 in the fourth quarter, shares a code base with Windows Server 2012, with a CCM of 1.2.", "locator": "Figure 33 'Infection rate by client and server operating system in 3Q14 and 4Q14', PDF page 63-64 (printed page 53-54); chart data labels in raw/exposure-security/pdf/sir-v18.txt", "derived": false, "formula": null, "headline": false, "series": "microsoft-sir-v18-infection-rate-by-server-os-4q14", "history": [], "notes": "Microsoft telemetry from MSRT executions, normalised per 1,000 computers per version. Values read from Figure 33's data labels: the labels run 3Q14 then 4Q14 in platform order (Vista SP2, 7 SP1, 8 RTM, 8.1 RTM, Server 2003 SP2, 2008 SP2, 2008 R2 SP1, 2012 RTM, 2012 R2 RTM); the order is confirmed by the report's text (Vista SP2 4Q14 5.2, Server 2008 SP2 3.7, Windows 8 5.0, Server 2012 1.2). Windows Server 2003 was in its last year of support. Volume 18 is the only SIR edition in v15-v22 whose infection-rate chart lists every server version with readable data labels (v15 shows only Server 2012 at 0.4 CCM in 2Q13; v16's 3Q13/4Q13 chart labels cannot be mapped reliably; v17 and v19-v22 do not chart server versions).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-sir-v18-4q14-infection-rate-windows-server-2012-1-2-ccm", "citation_text": "1.2 of every 1,000 computers running Windows Server 2012 were cleaned of malware by Microsoft's Malicious Software Removal Tool in the fourth quarter of 2014 (Microsoft Security Intelligence Report, 2015). Source: Microsoft, \"Microsoft Security Intelligence Report, Volume 18 (July through December 2014)\" (http://download.microsoft.com/download/7/1/A/71ABB4EC-E255-4DAF-9496-A46D67D875CD/Microsoft_Security_Intelligence_Report_Volume_18_English.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-sir-v18-4q14-infection-rate-windows-server-2012-1-2-ccm." }, { "id": "microsoft-sir-v18-4q14-infection-rate-windows-server-2012-r2-0-5-ccm", "family": "exposure-security", "statement": "0.5 of every 1,000 computers running Windows Server 2012 R2 were cleaned of malware by Microsoft's Malicious Software Removal Tool in the fourth quarter of 2014 (Microsoft Security Intelligence Report, 2015).", "short_statement": null, "short_refs": null, "value": 0.5, "unit": "computers cleaned per 1,000 scanned (CCM)", "display_value": "0.5 per 1,000", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012 R2", "publisher_short": null, "geography": "Worldwide (computers running Microsoft's Malicious Software Removal Tool)", "period": "2014-Q4", "population": "Computers running each Windows version that executed Microsoft's Malicious Software Removal Tool, normalised per 1,000", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Security Intelligence Report, Volume 18 (July through December 2014)", "source_url": "http://download.microsoft.com/download/7/1/A/71ABB4EC-E255-4DAF-9496-A46D67D875CD/Microsoft_Security_Intelligence_Report_Volume_18_English.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-05-19", "accessed_at": "2026-10-14", "quote": "Infection rates decreased from 3Q14 to 4Q14 on every supported client and server platform except Windows Server 2012 R2, which remained stable and low.", "locator": "Figure 33 'Infection rate by client and server operating system in 3Q14 and 4Q14', PDF page 63-64 (printed page 53-54); chart data labels in raw/exposure-security/pdf/sir-v18.txt", "derived": false, "formula": null, "headline": false, "series": "microsoft-sir-v18-infection-rate-by-server-os-4q14", "history": [], "notes": "Microsoft telemetry from MSRT executions, normalised per 1,000 computers per version. Values read from Figure 33's data labels: the labels run 3Q14 then 4Q14 in platform order (Vista SP2, 7 SP1, 8 RTM, 8.1 RTM, Server 2003 SP2, 2008 SP2, 2008 R2 SP1, 2012 RTM, 2012 R2 RTM); the order is confirmed by the report's text (Vista SP2 4Q14 5.2, Server 2008 SP2 3.7, Windows 8 5.0, Server 2012 1.2). Windows Server 2003 was in its last year of support. Volume 18 is the only SIR edition in v15-v22 whose infection-rate chart lists every server version with readable data labels (v15 shows only Server 2012 at 0.4 CCM in 2Q13; v16's 3Q13/4Q13 chart labels cannot be mapped reliably; v17 and v19-v22 do not chart server versions). 0.5 in both 3Q14 and 4Q14; the report calls 2012 R2 and Windows 8.1 'some of the lowest malware infection rates we have seen'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-sir-v18-4q14-infection-rate-windows-server-2012-r2-0-5-ccm", "citation_text": "0.5 of every 1,000 computers running Windows Server 2012 R2 were cleaned of malware by Microsoft's Malicious Software Removal Tool in the fourth quarter of 2014 (Microsoft Security Intelligence Report, 2015). Source: Microsoft, \"Microsoft Security Intelligence Report, Volume 18 (July through December 2014)\" (http://download.microsoft.com/download/7/1/A/71ABB4EC-E255-4DAF-9496-A46D67D875CD/Microsoft_Security_Intelligence_Report_Volume_18_English.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-sir-v18-4q14-infection-rate-windows-server-2012-r2-0-5-ccm." }, { "id": "microsoft-mddr-2023-incident-response-customers-with-legacy-or-unsupported-os-14pct", "family": "exposure-security", "statement": "14% of the customer environments Microsoft Incident Response reviewed in its 2023 engagements ran legacy or unsupported operating systems, and 43% had missing or inconsistent update management (Microsoft Digital Defense Report, 2023).", "short_statement": "**14%** of the networks Microsoft's incident responders examined in 2023 ran legacy or unsupported operating systems.", "short_refs": null, "value": 14, "unit": "% of customer environments reviewed in incident response engagements", "display_value": "14%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Microsoft telemetry and incident response)", "period": "2022-07/2023-06", "population": "Customer environments reviewed during Microsoft Incident Response engagements", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Digital Defense Report 2023: Building and improving cyber resilience", "source_url": "https://www.microsoft.com/en-us/security/security-insider/microsoft-digital-defense-report-2023", "source_type": "manufacturer", "source_access": "open", "published_at": "2023-10-05", "accessed_at": "2026-10-14", "quote": "ROM Issues found % of customers with the issue ... Legacy or unsupported operating systems 14%", "locator": "Chapter 2, 'Return on mitigation: Targeting investment to increase resilience' table, PDF page 43 (printed page 41-42)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Manufacturer-labelled (Microsoft sells ESU and migration). Population is organisations that called Microsoft's incident responders, so not a prevalence rate. Same table: 'Missing or inconsistent update management 43%', 'No vulnerability management 30%'. The report period is July 2022 to June 2023. Report PDF saved as raw/exposure-security/pdf/mddr-2023.pdf (text mddr-2023.txt); the hub URL is the landing page (it returned 403 to curl on 2026-10-14). October 2023 edition; exact release day taken as 5 October 2023 (report cover says October 2023).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2023-incident-response-customers-with-legacy-or-unsupported-os-14pct", "citation_text": "14% of the customer environments Microsoft Incident Response reviewed in its 2023 engagements ran legacy or unsupported operating systems, and 43% had missing or inconsistent update management (Microsoft Digital Defense Report, 2023). Source: Microsoft, \"Microsoft Digital Defense Report 2023: Building and improving cyber resilience\" (https://www.microsoft.com/en-us/security/security-insider/microsoft-digital-defense-report-2023). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2023-incident-response-customers-with-legacy-or-unsupported-os-14pct." }, { "id": "microsoft-mddr-2023-incident-response-missing-update-management-43pct", "family": "exposure-security", "statement": "43% of the customer environments Microsoft Incident Response reviewed in its 2023 engagements had missing or inconsistent update management (Microsoft Digital Defense Report, 2023).", "short_statement": null, "short_refs": null, "value": 43, "unit": "% of customer environments reviewed in incident response engagements", "display_value": "43%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Microsoft telemetry and incident response)", "period": "2022-07/2023-06", "population": "Customer environments reviewed during Microsoft Incident Response engagements", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Digital Defense Report 2023: Building and improving cyber resilience", "source_url": "https://www.microsoft.com/en-us/security/security-insider/microsoft-digital-defense-report-2023", "source_type": "manufacturer", "source_access": "open", "published_at": "2023-10-05", "accessed_at": "2026-10-14", "quote": "Missing or inconsistent update management 43%", "locator": "Chapter 2, 'Return on mitigation' table, PDF page 43 (printed page 41-42)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Same table as the 14% legacy-OS record; the short quote is the full table row. Report PDF saved as raw/exposure-security/pdf/mddr-2023.pdf (text mddr-2023.txt); the hub URL is the landing page (it returned 403 to curl on 2026-10-14). October 2023 edition; exact release day taken as 5 October 2023 (report cover says October 2023).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2023-incident-response-missing-update-management-43pct", "citation_text": "43% of the customer environments Microsoft Incident Response reviewed in its 2023 engagements had missing or inconsistent update management (Microsoft Digital Defense Report, 2023). Source: Microsoft, \"Microsoft Digital Defense Report 2023: Building and improving cyber resilience\" (https://www.microsoft.com/en-us/security/security-insider/microsoft-digital-defense-report-2023). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2023-incident-response-missing-update-management-43pct." }, { "id": "microsoft-mddr-2023-ransomware-compromises-via-unmanaged-devices-80-90pct", "family": "exposure-security", "statement": "80% to 90% of all successful ransomware compromises originated through unmanaged devices in Microsoft's observations for its 2023 Digital Defense Report (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 80, "unit": "% of successful ransomware compromises (lower end of 80-90% range)", "display_value": "80-90%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Microsoft telemetry and incident response)", "period": "2022-07/2023-06", "population": "Successful ransomware compromises observed by Microsoft", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Digital Defense Report 2023: Building and improving cyber resilience", "source_url": "https://www.microsoft.com/en-us/security/security-insider/microsoft-digital-defense-report-2023", "source_type": "manufacturer", "source_access": "open", "published_at": "2023-10-05", "accessed_at": "2026-10-14", "quote": "80-90% of all successful ransomware compromises originate through unmanaged devices.", "locator": "Chapter 1 key findings, PDF page 14; repeated in Chapter 2 'Ransomware targeting unmanaged devices', PDF page 19", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Unmanaged means not enrolled in device management or security tooling; Microsoft does not equate it with unsupported OS versions. Value records the lower bound of the stated range. Report PDF saved as raw/exposure-security/pdf/mddr-2023.pdf (text mddr-2023.txt); the hub URL is the landing page (it returned 403 to curl on 2026-10-14). October 2023 edition; exact release day taken as 5 October 2023 (report cover says October 2023).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2023-ransomware-compromises-via-unmanaged-devices-80-90pct", "citation_text": "80% to 90% of all successful ransomware compromises originated through unmanaged devices in Microsoft's observations for its 2023 Digital Defense Report (Microsoft, 2023). Source: Microsoft, \"Microsoft Digital Defense Report 2023: Building and improving cyber resilience\" (https://www.microsoft.com/en-us/security/security-insider/microsoft-digital-defense-report-2023). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2023-ransomware-compromises-via-unmanaged-devices-80-90pct." }, { "id": "microsoft-mddr-2023-ot-devices-on-unsupported-systems-25pct", "family": "exposure-security", "statement": "25% of operational technology devices on Microsoft customers' networks used unsupported operating systems, Microsoft's 2023 Digital Defense Report found (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 25, "unit": "% of OT devices on customer networks", "display_value": "25%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Microsoft telemetry and incident response)", "period": "2022-07/2023-06", "population": "Operational technology (OT) devices on networks of Microsoft Defender for IoT customers", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Digital Defense Report 2023: Building and improving cyber resilience", "source_url": "https://www.microsoft.com/en-us/security/security-insider/microsoft-digital-defense-report-2023", "source_type": "manufacturer", "source_access": "open", "published_at": "2023-10-05", "accessed_at": "2026-10-14", "quote": "25% of OT devices on customer networks use unsupported systems.", "locator": "Chapter 4 critical infrastructure key finding, PDF page 77", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "OT devices, not Windows Servers; context for 'unsupported systems' in critical infrastructure. Same passage: of the 78% of IoT devices with known vulnerabilities, 46% cannot be patched. Report PDF saved as raw/exposure-security/pdf/mddr-2023.pdf (text mddr-2023.txt); the hub URL is the landing page (it returned 403 to curl on 2026-10-14). October 2023 edition; exact release day taken as 5 October 2023 (report cover says October 2023).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2023-ot-devices-on-unsupported-systems-25pct", "citation_text": "25% of operational technology devices on Microsoft customers' networks used unsupported operating systems, Microsoft's 2023 Digital Defense Report found (Microsoft, 2023). Source: Microsoft, \"Microsoft Digital Defense Report 2023: Building and improving cyber resilience\" (https://www.microsoft.com/en-us/security/security-insider/microsoft-digital-defense-report-2023). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2023-ot-devices-on-unsupported-systems-25pct." }, { "id": "microsoft-mddr-2024-ransom-stage-attacks-leveraging-unmanaged-devices-over-90pct", "family": "exposure-security", "statement": "90%+ of the human-operated ransomware attacks that reached the ransom stage had used unmanaged devices on the victim's network, for initial access or to encrypt remotely, Microsoft's 2024 Digital Defense Report found (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 90, "unit": "% of attacks that progressed to ransom stage", "display_value": "90%+", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Microsoft telemetry and incident response)", "period": "2023-07/2024-06", "population": "Human-operated ransomware attacks observed by Microsoft that progressed to the ransom stage", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Digital Defense Report 2024", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/microsoft/final/en-us/microsoft-brand/documents/Microsoft%20Digital%20Defense%20Report%202024%20%281%29.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2024-10-15", "accessed_at": "2026-10-14", "quote": "In more than 90% of cases where attacks progressed to ransom stage, the attacker had leveraged unmanaged devices in the network, either to gain initial access or to remotely encrypt assets at the impact stage.", "locator": "Ransomware section, PDF page 28 (printed page 27-28); saved raw/exposure-security/pdf/mddr-2024.pdf", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Same page: remote encryption in 70% of successful attacks, 92% of it originating from unmanaged devices. The report does not tie this to unsupported OS versions; Microsoft's 2025 marketing page does (restatement record microsoft-2025-09-26-restates-mddr-2024-90pct-unmanaged-as-unsupported-os). Text extraction splits 'attacks' as 'a ttacks'; quoted as printed. Release date approximate (October 2024 edition; PDF created 27 September 2024).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2024-ransom-stage-attacks-leveraging-unmanaged-devices-over-90pct", "citation_text": "90%+ of the human-operated ransomware attacks that reached the ransom stage had used unmanaged devices on the victim's network, for initial access or to encrypt remotely, Microsoft's 2024 Digital Defense Report found (Microsoft, 2024). Source: Microsoft, \"Microsoft Digital Defense Report 2024\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/microsoft/final/en-us/microsoft-brand/documents/Microsoft%20Digital%20Defense%20Report%202024%20%281%29.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2024-ransom-stage-attacks-leveraging-unmanaged-devices-over-90pct." }, { "id": "microsoft-mddr-2024-incidents-more-prevalent-on-older-domain-controller-versions", "family": "exposure-security", "statement": "Security incidents handled by Microsoft Incident Response in January to March 2024 were more prevalent on domain controllers running older Windows Server versions (2016 and 2019) than on 2022, Microsoft's 2024 Digital Defense Report found (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "qualitative finding (chart without published values)", "display_value": "Older domain controllers", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Microsoft telemetry and incident response)", "period": "2024-01/2024-03", "population": "Customers in Microsoft Incident Response engagements, by domain controller OS version", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Digital Defense Report 2024", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/microsoft/final/en-us/microsoft-brand/documents/Microsoft%20Digital%20Defense%20Report%202024%20%281%29.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2024-10-15", "accessed_at": "2026-10-14", "quote": "Security incidents are more prevalent in older versions of domain controller operating systems (chart data represents January-March 2024).", "locator": "'Technical debt makes maintaining a secure environment challenging' chart caption, PDF page 43 (printed page 42-43)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The chart has an axis (0-500) but no readable data labels, so no count is recorded. The report's next sentence calls 2016 and 2019 'out-of-support versions' because mainstream support had ended; both were in extended support with security updates in 2024 (2016 until 12 January 2027, 2019 until 9 January 2029). Quote that sentence only with that correction.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2024-incidents-more-prevalent-on-older-domain-controller-versions", "citation_text": "Security incidents handled by Microsoft Incident Response in January to March 2024 were more prevalent on domain controllers running older Windows Server versions (2016 and 2019) than on 2022, Microsoft's 2024 Digital Defense Report found (Microsoft, 2024). Source: Microsoft, \"Microsoft Digital Defense Report 2024\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/microsoft/final/en-us/microsoft-brand/documents/Microsoft%20Digital%20Defense%20Report%202024%20%281%29.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2024-incidents-more-prevalent-on-older-domain-controller-versions." }, { "id": "microsoft-mddr-2025-breaches-initiated-via-unpatched-web-assets-18pct", "family": "exposure-security", "statement": "18% of breaches in Microsoft's incident response investigations were initiated via unpatched web assets and 12% via exposed remote services, against 28% via phishing or social engineering, Microsoft's 2025 Digital Defense Report found (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 18, "unit": "% of breaches investigated by Microsoft incident response", "display_value": "18%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Microsoft incident response)", "period": "2024-07/2025-06", "population": "Breaches investigated by Microsoft incident response teams", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Digital Defense Report 2025", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/microsoft/msc/documents/presentations/CSR/Microsoft-Digital-Defense-Report-2025.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-10-16", "accessed_at": "2026-10-14", "quote": "Incident response investigations found that 28% of breaches were initiated through phishing or social engineering, 18% were via unpatched web assets, and 12% leveraged exposed remote services.", "locator": "Key findings, item 3, PDF page 9; saved raw/exposure-security/pdf/mddr-2025.pdf", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Not specific to end-of-life servers; the closest MDDR 2025 measure of unpatched internet-facing systems. Release date approximate (October 2025 edition; PDF created 7 October 2025).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2025-breaches-initiated-via-unpatched-web-assets-18pct", "citation_text": "18% of breaches in Microsoft's incident response investigations were initiated via unpatched web assets and 12% via exposed remote services, against 28% via phishing or social engineering, Microsoft's 2025 Digital Defense Report found (Microsoft, 2025). Source: Microsoft, \"Microsoft Digital Defense Report 2025\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/microsoft/msc/documents/presentations/CSR/Microsoft-Digital-Defense-Report-2025.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mddr-2025-breaches-initiated-via-unpatched-web-assets-18pct." }, { "id": "microsoft-2025-09-26-restates-mddr-2024-90pct-unmanaged-as-unsupported-os", "family": "exposure-security", "statement": "90%+ of successful ransomware attacks exploit unmanaged endpoints 'with unsupported OS versions creating attack vectors', Microsoft's September 2025 business page says, citing the 2024 Digital Defense Report, which ties the figure to unmanaged devices only (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 90, "unit": "% of successful ransomware attacks (as restated)", "display_value": "90%+ (restated)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-09", "population": "Restatement of MDDR 2024's ransom-stage finding", "sample_n": null, "publisher": "Microsoft", "source_title": "Is end of support leaving your system vulnerable? The risks no IT leader can ignore", "source_url": "https://www.microsoft.com/en-us/windows/business/knowledge-center/why-end-of-support-is-a-business-risk", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-09-26", "accessed_at": "2026-10-14", "quote": "Microsoft’s 2024 Digital Defense Report shows that over 90% of successful ransomware attacks exploit unmanaged endpoints, with unsupported OS versions creating attack vectors that bypass standard EDR and XDR solutions.", "locator": "Article body, paragraph 5; saved raw/exposure-security/microsoft-why-end-of-support-is-a-business-risk.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Drift: MDDR 2024 says 'more than 90% of cases where attacks progressed to ransom stage' leveraged unmanaged devices (record microsoft-mddr-2024-ransom-stage-attacks-leveraging-unmanaged-devices-over-90pct); it says nothing about unsupported OS versions there, and 'successful ransomware attacks' widens 'attacks that progressed to ransom stage'. Do not publish the restated version as a finding.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-09-26-restates-mddr-2024-90pct-unmanaged-as-unsupported-os", "citation_text": "90%+ of successful ransomware attacks exploit unmanaged endpoints 'with unsupported OS versions creating attack vectors', Microsoft's September 2025 business page says, citing the 2024 Digital Defense Report, which ties the figure to unmanaged devices only (Microsoft, 2025). Source: Microsoft, \"Is end of support leaving your system vulnerable? The risks no IT leader can ignore\" (https://www.microsoft.com/en-us/windows/business/knowledge-center/why-end-of-support-is-a-business-risk). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-09-26-restates-mddr-2024-90pct-unmanaged-as-unsupported-os." }, { "id": "microsoft-lifecycle-2023-windows-server-2012-end-of-support-no-security-updates", "family": "exposure-security", "statement": "Windows Server 2012 and 2012 R2 stopped receiving security updates, non-security updates, bug fixes, technical support and online technical content updates after 10 October 2023, unless covered by ESU, Microsoft's end-of-support notice states (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": null, "unit": "end-of-support terms (no figure)", "display_value": "10 October 2023", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10-10", "population": "Windows Server 2012 and 2012 R2 customers", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 and 2012 R2 reaching end of support", "source_url": "https://learn.microsoft.com/en-us/lifecycle/announcements/windows-server-2012-r2-end-of-support", "source_type": "primary", "source_access": "open", "published_at": "2023-05-04", "accessed_at": "2026-10-14", "quote": "After this date, these products will no longer receive security updates, non-security updates, bug fixes, technical support, or online technical content updates.", "locator": "Announcement body, paragraph 1 (ms.date 2023-05-04); saved raw/exposure-security/ms-lifecycle-announcement-ws2012-eos.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Microsoft's warning wording. The same notice: ESUs 'free in Azure', purchasable on-premises, 'renewable on an annual basis, until October 13, 2026'. Dates and ESU terms belong to the lifecycle-dates-esu family; recorded here for the warning wording only.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-2023-windows-server-2012-end-of-support-no-security-updates", "citation_text": "Windows Server 2012 and 2012 R2 stopped receiving security updates, non-security updates, bug fixes, technical support and online technical content updates after 10 October 2023, unless covered by ESU, Microsoft's end-of-support notice states (Microsoft, 2023). Source: Microsoft, \"Windows Server 2012 and 2012 R2 reaching end of support\" (https://learn.microsoft.com/en-us/lifecycle/announcements/windows-server-2012-r2-end-of-support). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-2023-windows-server-2012-end-of-support-no-security-updates." }, { "id": "msrc-2017-05-13-wannacrypt-fix-for-custom-support-windows-server-2003", "family": "exposure-security", "statement": "Microsoft released its WannaCrypt (MS17-010) security update for Windows Server 2003, Windows XP and Windows 8 to all customers on 13 May 2017, almost two years after Server 2003's end of support, because of the attack's scale (Microsoft, 2017).", "short_statement": null, "short_refs": null, "value": null, "unit": "out-of-band fix for an out-of-support version (no figure)", "display_value": "13 May 2017", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2017-05-13", "population": "Windows Server 2003 customers without custom support", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Customer Guidance for WannaCrypt attacks", "source_url": "https://www.microsoft.com/en-us/msrc/blog/2017/05/customer-guidance-for-wannacrypt-attacks", "source_type": "primary", "source_access": "open", "published_at": "2017-05-13", "accessed_at": "2026-10-14", "quote": "we made the decision to make the Security Update for platforms in custom support only, Windows XP, Windows 8, and Windows Server 2003, broadly available for download", "locator": "Post body, paragraph 4; download links for 'Windows Server 2003 SP2 x64, Windows Server 2003 SP2 x86'; saved raw/exposure-security/msrc-2017-05-wannacrypt-guidance.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Windows Server 2003 left extended support on 14 July 2015 (22 months earlier). Until then the fix existed only for paying custom-support customers. An exception, not a policy: unsupported servers normally get nothing.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-2017-05-13-wannacrypt-fix-for-custom-support-windows-server-2003", "citation_text": "Microsoft released its WannaCrypt (MS17-010) security update for Windows Server 2003, Windows XP and Windows 8 to all customers on 13 May 2017, almost two years after Server 2003's end of support, because of the attack's scale (Microsoft, 2017). Source: Microsoft Security Response Center (MSRC), \"Customer Guidance for WannaCrypt attacks\" (https://www.microsoft.com/en-us/msrc/blog/2017/05/customer-guidance-for-wannacrypt-attacks). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-2017-05-13-wannacrypt-fix-for-custom-support-windows-server-2003." }, { "id": "msrc-2019-05-14-bluekeep-fix-for-out-of-support-windows-server-2003", "family": "exposure-security", "statement": "Microsoft shipped a fix for the wormable BlueKeep flaw (CVE-2019-0708) to out-of-support Windows Server 2003 and XP on 14 May 2019, while saying the best answer for those systems was to upgrade (Microsoft, 2019).", "short_statement": null, "short_refs": null, "value": null, "unit": "out-of-band fix for an out-of-support version (no figure)", "display_value": "14 May 2019", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2019-05-14", "population": "Windows Server 2003 and Windows XP users", "sample_n": null, "publisher": "Microsoft Security Response Center (MSRC)", "source_title": "Prevent a worm by updating Remote Desktop Services (CVE-2019-0708)", "source_url": "https://www.microsoft.com/en-us/msrc/blog/2019/05/prevent-a-worm-by-updating-remote-desktop-services-cve-2019-0708", "source_type": "primary", "source_access": "open", "published_at": "2019-05-14", "accessed_at": "2026-10-14", "quote": "Out-of-support systems include Windows 2003 and Windows XP. If you are on an out-of-support version, the best way to address this vulnerability is to upgrade to the latest version of Windows.", "locator": "Post body, paragraph 4 (fix in KB4500705); saved raw/exposure-security/msrc-2019-05-bluekeep.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Second such exception after WannaCrypt (2017). Bitsight counted 788,214 exposed vulnerable systems ten weeks later (record bitsight-2019-07-23-bluekeep-vulnerable-exposed-systems-788214).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-2019-05-14-bluekeep-fix-for-out-of-support-windows-server-2003", "citation_text": "Microsoft shipped a fix for the wormable BlueKeep flaw (CVE-2019-0708) to out-of-support Windows Server 2003 and XP on 14 May 2019, while saying the best answer for those systems was to upgrade (Microsoft, 2019). Source: Microsoft Security Response Center (MSRC), \"Prevent a worm by updating Remote Desktop Services (CVE-2019-0708)\" (https://www.microsoft.com/en-us/msrc/blog/2019/05/prevent-a-worm-by-updating-remote-desktop-services-cve-2019-0708). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#msrc-2019-05-14-bluekeep-fix-for-out-of-support-windows-server-2003." }, { "id": "cisa-2017-03-30-active-exploitation-iis-6-windows-server-2003", "family": "exposure-security", "statement": "US-CERT warned on 30 March 2017 of active exploitation of an IIS 6.0 vulnerability in Windows Server 2003 (CVE-2017-7269), a version out of support since July 2015 (CISA, 2017).", "short_statement": null, "short_refs": null, "value": null, "unit": "government alert on exploitation of an end-of-life server (no figure)", "display_value": "30 March 2017", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United States (global relevance)", "period": "2017-03-30", "population": "Windows Server 2003 systems running IIS 6.0", "sample_n": null, "publisher": "Cybersecurity and Infrastructure Security Agency (US-CERT)", "source_title": "Internet Information Services (IIS) 6.0 Vulnerability", "source_url": "https://www.cisa.gov/news-events/alerts/2017/03/30/internet-information-services-iis-60-vulnerability", "source_type": "primary", "source_access": "open", "published_at": "2017-03-30", "accessed_at": "2026-10-14", "quote": "US-CERT is aware of active exploitation of a vulnerability in Windows Server 2003 Operating System Internet Information Services (IIS) 6.0.", "locator": "Alert body, paragraph 1; saved raw/exposure-security/cisa-2017-03-30-iis6-alert.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The alert misdates the end of support: it says 'On June 15, 2015, Microsoft ended support for Windows Server 2003'; Microsoft's date is 14 July 2015 (CISA's own TA14-310A gives July 14, 2015). CVE-2017-7269 is in the KEV catalogue (added 2021-11-03), the only KEV entry whose name and description target a Windows Server version (record cisa-kev-2026-10-13-windows-server-named-entries-3-derived).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-2017-03-30-active-exploitation-iis-6-windows-server-2003", "citation_text": "US-CERT warned on 30 March 2017 of active exploitation of an IIS 6.0 vulnerability in Windows Server 2003 (CVE-2017-7269), a version out of support since July 2015 (CISA, 2017). Source: Cybersecurity and Infrastructure Security Agency (US-CERT), \"Internet Information Services (IIS) 6.0 Vulnerability\" (https://www.cisa.gov/news-events/alerts/2017/03/30/internet-information-services-iis-60-vulnerability). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-2017-03-30-active-exploitation-iis-6-windows-server-2003." }, { "id": "cisa-ta14-310a-2014-11-10-restates-12-million-physical-servers-windows-server-2003", "family": "exposure-security", "statement": "12 million physical servers worldwide still ran Windows Server 2003 in July 2014, CISA's end-of-support alert TA14-310A said, citing Redmond Magazine rather than Microsoft (CISA, 2014).", "short_statement": null, "short_refs": null, "value": 12000000, "unit": "physical servers running Windows Server 2003 (as restated)", "display_value": "12 million (restated)", "display_label": "", "display_hook": null, "row_label": "US-CERT alert, November 2014: physical servers (citing Redmond)", "publisher_short": null, "geography": "Worldwide", "period": "2014-07", "population": "Physical servers running Windows Server 2003 (source's estimate)", "sample_n": null, "publisher": "Cybersecurity and Infrastructure Security Agency (US-CERT)", "source_title": "Microsoft Ending Support for Windows Server 2003 Operating System (Alert TA14-310A)", "source_url": "https://www.cisa.gov/news-events/alerts/2014/11/10/microsoft-ending-support-windows-server-2003-operating-system", "source_type": "primary", "source_access": "open", "published_at": "2014-11-10", "accessed_at": "2026-10-14", "quote": "As of July 2014, there were 12 million physical servers worldwide still running Windows Server 2003. [3]", "locator": "Overview section; reference [3] 'Redmond Magazine, Prepare for Windows Server 2003's End of Support'; saved raw/exposure-security/cisa-ta14-310a-server-2003.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement: CISA cites a trade magazine; the '24 million instances on 12 million servers' claim is traced by the eol-history-2003-2008 family (do not publish the figure on CISA's authority). The alert also says unsupported systems face 'an elevated risk to cybersecurity dangers' and that regulated organisations 'may find they are no longer able to satisfy compliance requirements'. Last revised 30 September 2016.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-ta14-310a-2014-11-10-restates-12-million-physical-servers-windows-server-2003", "citation_text": "12 million physical servers worldwide still ran Windows Server 2003 in July 2014, CISA's end-of-support alert TA14-310A said, citing Redmond Magazine rather than Microsoft (CISA, 2014). Source: Cybersecurity and Infrastructure Security Agency (US-CERT), \"Microsoft Ending Support for Windows Server 2003 Operating System (Alert TA14-310A)\" (https://www.cisa.gov/news-events/alerts/2014/11/10/microsoft-ending-support-windows-server-2003-operating-system). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-ta14-310a-2014-11-10-restates-12-million-physical-servers-windows-server-2003." }, { "id": "cisa-aa19-290a-2019-10-17-windows-server-2008-r2-end-of-support-compliance-warning", "family": "exposure-security", "statement": "CISA warned in October 2019 that organisations running Windows 7 and Windows Server 2008 R2 after 14 January 2020 might be unable to satisfy regulatory compliance requirements and faced a higher likelihood of malware (CISA, 2019).", "short_statement": null, "short_refs": null, "value": null, "unit": "government alert (no figure)", "display_value": "14 January 2020", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United States", "period": "2019-10-17", "population": "Organisations running Windows 7 and Windows Server 2008 R2", "sample_n": null, "publisher": "Cybersecurity and Infrastructure Security Agency (CISA)", "source_title": "Microsoft Ending Support for Windows 7 and Windows Server 2008 R2 (Alert AA19-290A)", "source_url": "https://us-cert.cisa.gov/ncas/alerts/aa19-290a", "source_type": "primary", "source_access": "open", "published_at": "2019-10-17", "accessed_at": "2026-10-14", "quote": "Organizations that have regulatory obligations may find that they are unable to satisfy compliance requirements while running Windows 7 and Windows Server 2008 R2.", "locator": "Alert body, paragraph 3; saved raw/exposure-security/cisa-aa19-290a-win7-ws2008r2.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "CISA also advised contacting the vendor 'for fee-for-service maintenance, if unable to upgrade' (Microsoft's paid ESU).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-aa19-290a-2019-10-17-windows-server-2008-r2-end-of-support-compliance-warning", "citation_text": "CISA warned in October 2019 that organisations running Windows 7 and Windows Server 2008 R2 after 14 January 2020 might be unable to satisfy regulatory compliance requirements and faced a higher likelihood of malware (CISA, 2019). Source: Cybersecurity and Infrastructure Security Agency (CISA), \"Microsoft Ending Support for Windows 7 and Windows Server 2008 R2 (Alert AA19-290A)\" (https://us-cert.cisa.gov/ncas/alerts/aa19-290a). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-aa19-290a-2019-10-17-windows-server-2008-r2-end-of-support-compliance-warning." }, { "id": "cccs-in19-001-2019-03-12-windows-server-2008-end-of-support", "family": "exposure-security", "statement": "Canada's Cyber Centre told organisations in March 2019 to begin migrating off Windows Server 2008 and 2008 R2 before 14 January 2020, saying ESU would cover only vulnerabilities Microsoft rated critical (Canadian Centre for Cyber Security, 2019).", "short_statement": null, "short_refs": null, "value": null, "unit": "government information note (no figure)", "display_value": "14 January 2020", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Canada", "period": "2019-03-12", "population": "Organisations running Windows Server 2008 and 2008 R2", "sample_n": null, "publisher": "Canadian Centre for Cyber Security (CCCS)", "source_title": "Windows Server 2008 end of support (Information Note IN19-001)", "source_url": "https://www.cyber.gc.ca/en/alerts-advisories/windows-server-2008-end-support", "source_type": "primary", "source_access": "open", "published_at": "2019-03-12", "accessed_at": "2026-10-14", "quote": "Options are available to purchase Extended Security Updates for up to 3 years for operating systems environments that cannot be migrated by 14 January 2020. These updates will only cover security vulnerabilities deemed to be “critical” by Microsoft.", "locator": "'Assessment' section, last paragraph; saved raw/exposure-security/cyber-gc-ca-in19-001-ws2008.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Contradiction: Microsoft's ESU covers Critical and Important security updates (lifecycle-dates-esu family should confirm from Microsoft's ESU FAQ), not Critical only. Use this record for the agency's migration advice, not for ESU scope.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cccs-in19-001-2019-03-12-windows-server-2008-end-of-support", "citation_text": "Canada's Cyber Centre told organisations in March 2019 to begin migrating off Windows Server 2008 and 2008 R2 before 14 January 2020, saying ESU would cover only vulnerabilities Microsoft rated critical (Canadian Centre for Cyber Security, 2019). Source: Canadian Centre for Cyber Security (CCCS), \"Windows Server 2008 end of support (Information Note IN19-001)\" (https://www.cyber.gc.ca/en/alerts-advisories/windows-server-2008-end-support). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cccs-in19-001-2019-03-12-windows-server-2008-end-of-support." }, { "id": "ico-2022-10-19-interserve-servers-on-windows-server-2003-r2-18", "family": "exposure-security", "statement": "18 servers running Windows Server 2003 R2 held personal data at Interserve when ransomware hit in 2020, five years after that version's end of support, the UK ICO's penalty notice found (ICO, 2022).", "short_statement": null, "short_refs": null, "value": 18, "unit": "servers running Windows Server 2003 R2", "display_value": "18", "display_label": "Interserve, UK ICO penalty notice, October 2022", "display_hook": null, "row_label": "Interserve (UK ICO, 2022): servers on Windows Server 2003 R2", "publisher_short": null, "geography": "United Kingdom", "period": "2020", "population": "Interserve Group servers processing personal data (HR and pensions systems)", "sample_n": null, "publisher": "Information Commissioner's Office (ICO)", "source_title": "Monetary Penalty Notice to Interserve Group Limited", "source_url": "https://ico.org.uk/media/action-weve-taken/mpns/4021951/interserve-group-limited-monetary-penalty-notice.pdf", "source_type": "primary", "source_access": "open", "published_at": "2022-10-19", "accessed_at": "2026-10-14", "quote": "In particular, Interserve was processing personal data on 18 servers that hosted Server 2003 R2, and 22 servers that hosted Microsoft Server 2008 R2.", "locator": "Paragraphs 53-59 '(1) Unsupported operating systems', pages 19-21; Wayback copy https://web.archive.org/web/20221023231758/https://ico.org.uk/media/action-weve-taken/mpns/4021951/interserve-group-limited-monetary-penalty-notice.pdf (the ICO URL returns 404 on 2026-10-14); saved raw/exposure-security/pdf/ico-2022-10-interserve-mpn.pdf", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The ICO found the unsupported systems contrary to Interserve's own policies, NIST 800-53 and NCSC guidance, and noted Microsoft had warned in April 2020 that ransomware actors exploited 'older operating systems such as Windows Server 2003 and 2008'. Interserve made no formal risk assessment of them. The notice is dated 19 October 2022.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#ico-2022-10-19-interserve-servers-on-windows-server-2003-r2-18", "citation_text": "18 servers running Windows Server 2003 R2 held personal data at Interserve when ransomware hit in 2020, five years after that version's end of support, the UK ICO's penalty notice found (ICO, 2022). Source: Information Commissioner's Office (ICO), \"Monetary Penalty Notice to Interserve Group Limited\" (https://ico.org.uk/media/action-weve-taken/mpns/4021951/interserve-group-limited-monetary-penalty-notice.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#ico-2022-10-19-interserve-servers-on-windows-server-2003-r2-18." }, { "id": "ico-2022-10-19-interserve-servers-on-windows-server-2008-r2-22", "family": "exposure-security", "statement": "22 servers running Windows Server 2008 R2 held personal data at Interserve when ransomware hit in 2020, months after that version's January 2020 end of support, the UK ICO's penalty notice found (ICO, 2022).", "short_statement": null, "short_refs": null, "value": 22, "unit": "servers running Windows Server 2008 R2", "display_value": "22", "display_label": "", "display_hook": null, "row_label": "Interserve: servers on Windows Server 2008 R2", "publisher_short": null, "geography": "United Kingdom", "period": "2020", "population": "Interserve Group servers processing personal data (HR and pensions systems)", "sample_n": null, "publisher": "Information Commissioner's Office (ICO)", "source_title": "Monetary Penalty Notice to Interserve Group Limited", "source_url": "https://ico.org.uk/media/action-weve-taken/mpns/4021951/interserve-group-limited-monetary-penalty-notice.pdf", "source_type": "primary", "source_access": "open", "published_at": "2022-10-19", "accessed_at": "2026-10-14", "quote": "In particular, Interserve was processing personal data on 18 servers that hosted Server 2003 R2, and 22 servers that hosted Microsoft Server 2008 R2.", "locator": "Paragraphs 53-59 '(1) Unsupported operating systems', pages 19-21; Wayback copy https://web.archive.org/web/20221023231758/https://ico.org.uk/media/action-weve-taken/mpns/4021951/interserve-group-limited-monetary-penalty-notice.pdf (the ICO URL returns 404 on 2026-10-14); saved raw/exposure-security/pdf/ico-2022-10-interserve-mpn.pdf", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "See the 18-server record. The notice says 2008 R2 'became end-of-life in January 2020'; the phishing intrusion began at the end of March 2020 and on 1 and 2 May 2020 the attacker compromised 283 systems.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#ico-2022-10-19-interserve-servers-on-windows-server-2008-r2-22", "citation_text": "22 servers running Windows Server 2008 R2 held personal data at Interserve when ransomware hit in 2020, months after that version's January 2020 end of support, the UK ICO's penalty notice found (ICO, 2022). Source: Information Commissioner's Office (ICO), \"Monetary Penalty Notice to Interserve Group Limited\" (https://ico.org.uk/media/action-weve-taken/mpns/4021951/interserve-group-limited-monetary-penalty-notice.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#ico-2022-10-19-interserve-servers-on-windows-server-2008-r2-22." }, { "id": "ico-2022-10-19-interserve-penalty-4-4-million-gbp", "family": "exposure-security", "statement": "£4.4 million was the UK ICO's penalty on Interserve in October 2022 for a 2020 ransomware breach of up to 113,000 employees' data, in which processing on unsupported Windows Server 2003 R2 and 2008 R2 servers was a cited failure (ICO, 2022).", "short_statement": "The UK regulator fined Interserve **£4.4 million** in 2022 over a breach involving Windows Server 2003 R2 and 2008 R2 servers.", "short_refs": null, "value": 4400000, "unit": "GBP penalty", "display_value": "£4.4 million", "display_label": "", "display_hook": null, "row_label": "Interserve: penalty", "publisher_short": null, "geography": "United Kingdom", "period": "2022-10", "population": "Interserve Group Limited (one case)", "sample_n": null, "publisher": "Information Commissioner's Office (ICO)", "source_title": "Monetary Penalty Notice to Interserve Group Limited", "source_url": "https://ico.org.uk/media/action-weve-taken/mpns/4021951/interserve-group-limited-monetary-penalty-notice.pdf", "source_type": "primary", "source_access": "open", "published_at": "2022-10-19", "accessed_at": "2026-10-14", "quote": "The amount of the penalty is £4,400,000.", "locator": "Introduction and summary, paragraph 1-2, page 1-2; also 'which affected the personal data of up to 113,000 employees'; Paragraphs 53-59 '(1) Unsupported operating systems', pages 19-21; Wayback copy https://web.archive.org/web/20221023231758/https://ico.org.uk/media/action-weve-taken/mpns/4021951/interserve-group-limited-monetary-penalty-notice.pdf (the ICO URL returns 404 on 2026-10-14); saved raw/exposure-security/pdf/ico-2022-10-interserve-mpn.pdf", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The unsupported servers were one of several failures (outdated antivirus, inadequate vulnerability scanning, privileged-account management); the fine is not attributable to the old servers alone. The Stack's report (thestack-2022-interserve-fine.html) says 'Microsoft Server 2003 R2 on 18 servers', matching the notice.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#ico-2022-10-19-interserve-penalty-4-4-million-gbp", "citation_text": "£4.4 million was the UK ICO's penalty on Interserve in October 2022 for a 2020 ransomware breach of up to 113,000 employees' data, in which processing on unsupported Windows Server 2003 R2 and 2008 R2 servers was a cited failure (ICO, 2022). Source: Information Commissioner's Office (ICO), \"Monetary Penalty Notice to Interserve Group Limited\" (https://ico.org.uk/media/action-weve-taken/mpns/4021951/interserve-group-limited-monetary-penalty-notice.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#ico-2022-10-19-interserve-penalty-4-4-million-gbp." }, { "id": "ico-2020-03-04-cathay-pacific-penalty-500000-gbp-unsupported-os", "family": "exposure-security", "statement": "£500,000, the maximum under the old UK law, was the ICO's March 2020 fine on Cathay Pacific for a breach exposing 111,578 UK customers' and about 9.4 million others' data, with 'operating systems that were no longer supported' among the failures (ICO, 2020).", "short_statement": null, "short_refs": null, "value": 500000, "unit": "GBP penalty", "display_value": "£500,000", "display_label": "", "display_hook": null, "row_label": "Cathay Pacific (UK ICO, 2020): penalty", "publisher_short": null, "geography": "United Kingdom (and 9.4 million customers worldwide)", "period": "2014-10/2018-05", "population": "Cathay Pacific Airways Limited (one case)", "sample_n": null, "publisher": "Information Commissioner's Office (ICO)", "source_title": "International airline fined £500,000 for failing to secure its customers' personal data", "source_url": "https://ico.org.uk/about-the-ico/news-and-events/news-and-blogs/2020/03/international-airline-fined-500-000-for-failing-to-secure-its-customers-personal-data/", "source_type": "primary", "source_access": "open", "published_at": "2020-03-04", "accessed_at": "2026-10-14", "quote": "A catalogue of errors were found during the ICO’s investigation including: back-up files that were not password protected; unpatched internet-facing servers; use of operating systems that were no longer supported by the developer and inadequate anti-virus protection.", "locator": "News release, paragraph 5; Wayback https://web.archive.org/web/20201209184244/https://ico.org.uk/about-the-ico/news-and-events/news-and-blogs/2020/03/international-airline-fined-500-000-for-failing-to-secure-its-customers-personal-data/ ; saved raw/exposure-security/ico-2020-03-cathay-pacific-news-wayback.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The release does not name the operating system; the monetary penalty notice (saved pdf/ico-2020-02-cathay-pacific-mpn.pdf, a scanned image without a text layer) was not OCR'd, so the version is unverified. Fined under the Data Protection Act 1998 (cap £500,000).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#ico-2020-03-04-cathay-pacific-penalty-500000-gbp-unsupported-os", "citation_text": "£500,000, the maximum under the old UK law, was the ICO's March 2020 fine on Cathay Pacific for a breach exposing 111,578 UK customers' and about 9.4 million others' data, with 'operating systems that were no longer supported' among the failures (ICO, 2020). Source: Information Commissioner's Office (ICO), \"International airline fined £500,000 for failing to secure its customers' personal data\" (https://ico.org.uk/about-the-ico/news-and-events/news-and-blogs/2020/03/international-airline-fined-500-000-for-failing-to-secure-its-customers-personal-data/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#ico-2020-03-04-cathay-pacific-penalty-500000-gbp-unsupported-os." }, { "id": "hhs-ocr-2014-12-acmhs-hipaa-settlement-150000-usd-unsupported-software", "family": "exposure-security", "statement": "$150,000 was the HIPAA settlement Anchorage Community Mental Health Services paid in December 2014 after malware exposed 2,743 patients' records, a breach HHS traced to unpatched and unsupported software (HHS Office for Civil Rights, 2014).", "short_statement": null, "short_refs": null, "value": 150000, "unit": "USD settlement", "display_value": "$150,000", "display_label": "", "display_hook": null, "row_label": "Anchorage Community Mental Health Services (US HHS, 2014): settlement", "publisher_short": null, "geography": "United States (Alaska)", "period": "2014-12", "population": "Anchorage Community Mental Health Services (one case, 2,743 individuals affected)", "sample_n": null, "publisher": "US Department of Health and Human Services (Office for Civil Rights, HHS OCR)", "source_title": "BULLETIN: HIPAA Settlement Underscores the Vulnerability of Unpatched and Unsupported Software", "source_url": "https://www.hhs.gov/sites/default/files/ocr/privacy/hipaa/enforcement/examples/acmhs/acmhsbulletin.pdf", "source_type": "primary", "source_access": "open", "published_at": "2014-12-01", "accessed_at": "2026-10-14", "quote": "the security incident was the direct result of ACMHS failing to identify and address basic risks, such as not regularly updating their IT resources with available patches and running outdated, unsupported software.", "locator": "Bulletin page 1, paragraph 2; Wayback copy https://web.archive.org/web/2024id_/https://www.hhs.gov/sites/default/files/ocr/privacy/hipaa/enforcement/examples/acmhs/acmhsbulletin.pdf (hhs.gov returns 403 to scripts); saved raw/exposure-security/hhs-ocr-2014-acmhs-bulletin.pdf", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The bulletin does not name the unsupported product (it may not have been a server OS). Dated 'December 2014' (day not given; set to the 1st). The resolution page (hhs-ocr-acmhs-resolution-page-wayback-2024.html) carries the same headline.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#hhs-ocr-2014-12-acmhs-hipaa-settlement-150000-usd-unsupported-software", "citation_text": "$150,000 was the HIPAA settlement Anchorage Community Mental Health Services paid in December 2014 after malware exposed 2,743 patients' records, a breach HHS traced to unpatched and unsupported software (HHS Office for Civil Rights, 2014). Source: US Department of Health and Human Services (Office for Civil Rights, HHS OCR), \"BULLETIN: HIPAA Settlement Underscores the Vulnerability of Unpatched and Unsupported Software\" (https://www.hhs.gov/sites/default/files/ocr/privacy/hipaa/enforcement/examples/acmhs/acmhsbulletin.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#hhs-ocr-2014-12-acmhs-hipaa-settlement-150000-usd-unsupported-software." }, { "id": "coalition-2023-05-16-end-of-life-software-users-three-times-more-likely-incident", "family": "exposure-security", "statement": "3 times more likely to suffer a cyber incident were Coalition policyholders that kept using end-of-life software, the insurer's 2023 Cyber Claims Report found (Coalition, 2023).", "short_statement": "Insured businesses that kept end-of-life software were **3 times** more likely to suffer a cyber incident, Coalition found in 2023.", "short_refs": null, "value": 3, "unit": "times the incident likelihood of other policyholders", "display_value": "3x", "display_label": "Coalition policyholders, 2023 Cyber Claims Report", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "US, Canada, UK and Australia (Coalition policyholders)", "period": "2022", "population": "Coalition cyber-insurance policyholders", "sample_n": null, "publisher": "Coalition", "source_title": "Coalition 2023 Cyber Claims Report (press release)", "source_url": "https://www.coalitioninc.com/announcements/coalition-2023-cyber-claims-report", "source_type": "manufacturer", "source_access": "open", "published_at": "2023-05-16", "accessed_at": "2026-10-14", "quote": "policyholders—regardless of organization size—who continued to use end-of-life software, products no longer supported by their original developers, were three times more likely to suffer from an incident.", "locator": "Press release, paragraph 1; saved raw/exposure-security/coalition-2023-cyber-claims-report.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Insurer's own claims data (manufacturer-labelled); end-of-life software of any kind, not only Windows Server. Same release: one unresolved critical vulnerability made a claim 33% more likely. Coalition's December 2023 alert repeats the 3x figure. The quote contains em dashes because the source does; the statement does not.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#coalition-2023-05-16-end-of-life-software-users-three-times-more-likely-incident", "citation_text": "3 times more likely to suffer a cyber incident were Coalition policyholders that kept using end-of-life software, the insurer's 2023 Cyber Claims Report found (Coalition, 2023). Source: Coalition, \"Coalition 2023 Cyber Claims Report (press release)\" (https://www.coalitioninc.com/announcements/coalition-2023-cyber-claims-report). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#coalition-2023-05-16-end-of-life-software-users-three-times-more-likely-incident." }, { "id": "coalition-2023-12-19-microsoft-teams-endpoint-ran-eol-iis-8-5", "family": "exposure-security", "statement": "Microsoft's own Teams directory endpoint was still serving end-of-life IIS 8.5, the Windows Server 2012 R2 web server, in December 2023, two months after end of support, the insurer Coalition found while scanning policyholders (Coalition, 2023).", "short_statement": null, "short_refs": null, "value": null, "unit": "observation (no figure)", "display_value": "IIS 8.5", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-12-19", "population": "Coalition policyholders flagged for IIS 8.5", "sample_n": null, "publisher": "Coalition", "source_title": "Guidance for Hosted End-Of-Life Microsoft IIS 8.5", "source_url": "https://www.coalitioninc.com/blog/security-labs/security-alert-eol-microsoft-iis", "source_type": "manufacturer", "source_access": "open", "published_at": "2023-12-19", "accessed_at": "2026-10-14", "quote": "Microsoft IIS 8.5 shipped in 2013 as part of Windows Server 2012 R2 and was transitioned to EOL status on October 10, 2023.", "locator": "Post body, paragraphs 4-6 (curl output 'Server : Microsoft-IIS/8.5' from webdir.online.lync.com); saved raw/exposure-security/coalition-security-alert-eol-iis.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Shows why banner counts of end-of-life IIS (Shadowserver, Cybernews) include hosts that the owner may cover with ESU or other controls. Coalition paused IIS 8.5 EOL notifications after finding this.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#coalition-2023-12-19-microsoft-teams-endpoint-ran-eol-iis-8-5", "citation_text": "Microsoft's own Teams directory endpoint was still serving end-of-life IIS 8.5, the Windows Server 2012 R2 web server, in December 2023, two months after end of support, the insurer Coalition found while scanning policyholders (Coalition, 2023). Source: Coalition, \"Guidance for Hosted End-Of-Life Microsoft IIS 8.5\" (https://www.coalitioninc.com/blog/security-labs/security-alert-eol-microsoft-iis). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#coalition-2023-12-19-microsoft-teams-endpoint-ran-eol-iis-8-5." }, { "id": "channelfutures-2024-04-05-connectwise-windows-server-2012-share-of-siem-log-sources-14pct", "family": "exposure-security", "statement": "14% of the Windows log data sources in ConnectWise's SIEM were Windows Server 2012 in its 2024 MSP Threat Report, months after the version's October 2023 end of support, as reported by Channel Futures (Channel Futures, 2024).", "short_statement": null, "short_refs": null, "value": 14, "unit": "% of Windows log data sources in ConnectWise SIEM", "display_value": "14%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (ConnectWise SIEM customers using Windows)", "period": "2023", "population": "Windows log data sources in ConnectWise's SIEM among customers using Windows (MSPs and their clients)", "sample_n": null, "publisher": "Channel Futures (reporting ConnectWise)", "source_title": "ConnectWise MSP Threat Report Warns of Windows 2012, New Ransomware Dangers", "source_url": "https://www.channelfutures.com/security/connectwise-msp-threat-report-windows-2012-ransomware", "source_type": "secondary", "source_access": "open", "published_at": "2024-04-05", "accessed_at": "2026-10-14", "quote": "The CRU found Windows Server 2012 makes up about 14% of Windows log data sources for ConnectWise’s security information and event management (SIEM) among customers using Windows operating systems.", "locator": "Article body, paragraph 4; saved raw/exposure-security/channelfutures-2024-connectwise-ws2012.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The ConnectWise report itself is gated (its press release, connectwise-2024-msp-threat-report-pr.html, does not give the 14%). Vendor telemetry of an install base, so the install-base-audits family may prefer it; recorded here because it comes from a threat report. 'Windows Server 2012' may include 2012 R2.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#channelfutures-2024-04-05-connectwise-windows-server-2012-share-of-siem-log-sources-14pct", "citation_text": "14% of the Windows log data sources in ConnectWise's SIEM were Windows Server 2012 in its 2024 MSP Threat Report, months after the version's October 2023 end of support, as reported by Channel Futures (Channel Futures, 2024). Source: Channel Futures (reporting ConnectWise), \"ConnectWise MSP Threat Report Warns of Windows 2012, New Ransomware Dangers\" (https://www.channelfutures.com/security/connectwise-msp-threat-report-windows-2012-ransomware). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#channelfutures-2024-04-05-connectwise-windows-server-2012-share-of-siem-log-sources-14pct." }, { "id": "cisa-2021-02-01-bad-practice-unsupported-end-of-life-software", "family": "exposure-security", "statement": "CISA listed the use of unsupported or end-of-life software as the first entry in its Bad Practices catalogue in 2021, calling it dangerous for critical infrastructure and 'especially egregious' in internet-accessible technologies (CISA, 2021).", "short_statement": null, "short_refs": null, "value": null, "unit": "position (no figure)", "display_value": "Bad Practice", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United States", "period": "2021-02-01", "population": "Organisations supporting critical infrastructure and national critical functions", "sample_n": null, "publisher": "Cybersecurity and Infrastructure Security Agency (CISA)", "source_title": "Bad Practices", "source_url": "https://www.cisa.gov/news-events/news/bad-practices-0", "source_type": "primary", "source_access": "open", "published_at": "2021-02-01", "accessed_at": "2026-10-14", "quote": "Use of unsupported (or end-of-life) software in service of Critical Infrastructure and National Critical Functions is dangerous and significantly elevates risk to national security, national economic security, and national public health and safety.", "locator": "Press release body, first catalogue entry (now marked Archived Content); saved raw/exposure-security/cisa-bad-practices.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Next sentence: 'This dangerous practice is especially egregious in technologies accessible from the Internet.' The page is archived but still published on 2026-10-14.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-2021-02-01-bad-practice-unsupported-end-of-life-software", "citation_text": "CISA listed the use of unsupported or end-of-life software as the first entry in its Bad Practices catalogue in 2021, calling it dangerous for critical infrastructure and 'especially egregious' in internet-accessible technologies (CISA, 2021). Source: Cybersecurity and Infrastructure Security Agency (CISA), \"Bad Practices\" (https://www.cisa.gov/news-events/news/bad-practices-0). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cisa-2021-02-01-bad-practice-unsupported-end-of-life-software." }, { "id": "ncsc-2021-06-29-obsolete-products-only-fully-effective-mitigation-stop-using", "family": "exposure-security", "statement": "The UK's National Cyber Security Centre says the only fully effective way to manage the risk of an obsolete product is to stop using it, and that obsolete servers should be treated as untrusted (NCSC, 2021).", "short_statement": null, "short_refs": null, "value": null, "unit": "position (no figure)", "display_value": "Stop using", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United Kingdom", "period": "2021-06-29/2025-05-13", "population": "Organisations unable to migrate away from obsolete products", "sample_n": null, "publisher": "National Cyber Security Centre (NCSC)", "source_title": "Device security guidance: Obsolete products", "source_url": "https://www.ncsc.gov.uk/collection/device-security-guidance/managing-deployed-devices/obsolete-products", "source_type": "primary", "source_access": "open", "published_at": "2021-06-29", "accessed_at": "2026-10-14", "quote": "The only fully effective way to mitigate this risk is to stop using the obsolete product.", "locator": "Note box at the top; 'Treat obsolete systems as unmanaged or untrusted' section; page published 29 June 2021, reviewed 13 May 2025; saved raw/exposure-security/ncsc-obsolete-products.html", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Also: 'Weaknesses found in unsupported products will remain unpatched and will be exploitable by relatively low skilled attackers' and 'Obsolete servers should be treated by the wider enterprise as being untrusted'. Cited in the ICO's Interserve notice as UK guidance.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#ncsc-2021-06-29-obsolete-products-only-fully-effective-mitigation-stop-using", "citation_text": "The UK's National Cyber Security Centre says the only fully effective way to manage the risk of an obsolete product is to stop using it, and that obsolete servers should be treated as untrusted (NCSC, 2021). Source: National Cyber Security Centre (NCSC), \"Device security guidance: Obsolete products\" (https://www.ncsc.gov.uk/collection/device-security-guidance/managing-deployed-devices/obsolete-products). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#ncsc-2021-06-29-obsolete-products-only-fully-effective-mitigation-stop-using." }, { "id": "enisa-2014-01-29-discontinued-software-high-security-risk", "family": "exposure-security", "statement": "ENISA advised in January 2014 that discontinued software should be considered a high security risk for critical IT components and mitigated by migrating, warning it may stay exposed to each new vulnerability 'forever' (ENISA, 2014).", "short_statement": null, "short_refs": null, "value": null, "unit": "position (no figure)", "display_value": "High security risk", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "European Union", "period": "2014-01-29", "population": "IT managers, manufacturers and users of discontinued software", "sample_n": null, "publisher": "European Union Agency for Network and Information Security (ENISA)", "source_title": "Risks of using discontinued software (Flash Note 01)", "source_url": "https://www.enisa.europa.eu/publications/info-notes/flash-note-risks-of-using-discontinued-software/@@download/fullReport", "source_type": "primary", "source_access": "open", "published_at": "2014-01-29", "accessed_at": "2026-10-14", "quote": "Discontinued software should be considered a high security risk for critical IT components and should be mitigated by migrating to newer solutions or other platforms.", "locator": "Section 3 'ENISA's recommendations', item 1, page 2; Wayback https://web.archive.org/web/20211106184222/https://www.enisa.europa.eu/publications/info-notes/flash-note-risks-of-using-discontinued-software/@@download/fullReport ; saved raw/exposure-security/enisa-2014-risks-of-using-discontinued-software.pdf", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Issued for the Windows XP end of support (April 2014); the live ENISA URL returns 404 on 2026-10-14. Text extraction splits 'mitigate d'; quoted as printed. Section 2: new vulnerabilities 'will no longer be collected, reported and analysed ... the discontinued software may stay exposed to each such vulnerability forever'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#enisa-2014-01-29-discontinued-software-high-security-risk", "citation_text": "ENISA advised in January 2014 that discontinued software should be considered a high security risk for critical IT components and mitigated by migrating, warning it may stay exposed to each new vulnerability 'forever' (ENISA, 2014). Source: European Union Agency for Network and Information Security (ENISA), \"Risks of using discontinued software (Flash Note 01)\" (https://www.enisa.europa.eu/publications/info-notes/flash-note-risks-of-using-discontinued-software/@@download/fullReport). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#enisa-2014-01-29-discontinued-software-high-security-risk." }, { "id": "pci-ssc-faq-1130-2013-06-unsupported-os-cannot-meet-patch-requirements", "family": "exposure-security", "statement": "The PCI Security Standards Council's FAQ 1130 (June 2013) says systems on an operating system its vendor no longer supports cannot meet the PCI DSS patching requirements, so they need compensating controls and an active migration plan (PCI SSC, 2013).", "short_statement": null, "short_refs": null, "value": null, "unit": "position (no figure)", "display_value": "Requirement not met", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (card payment environments)", "period": "2013-06", "population": "Entities assessed against PCI DSS", "sample_n": null, "publisher": "PCI Security Standards Council", "source_title": "FAQ 1130: Are operating systems that are no longer supported by the vendor non-compliant with the PCI DSS?", "source_url": "https://www.pcisecuritystandards.org/faq/articles/Frequently_Asked_Question/are-operating-systems-that-are-no-longer-supported-by-the-vendor-non-compliant-with-the-pci-dss/", "source_type": "primary", "source_access": "open", "published_at": "2013-06-01", "accessed_at": "2026-10-14", "quote": "Where operating systems are no longer supported by the vendor, OEM or developer, security patches might not be available to protect the systems from known exploits, and these requirements would not be able to be met.", "locator": "FAQ article 1130 (dated June 2013), paragraphs 1-4; the article URL renders the text client-side, so the saved copy raw/exposure-security/pci-ssc-faq-1130.html is the verified document", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "FAQ refers to PCI DSS requirements 6.1 and 6.2 (the 2013 numbering). Compensating controls 'should be considered a temporary solution only'. Dated June 2013 (day not given; set to the 1st).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#pci-ssc-faq-1130-2013-06-unsupported-os-cannot-meet-patch-requirements", "citation_text": "The PCI Security Standards Council's FAQ 1130 (June 2013) says systems on an operating system its vendor no longer supports cannot meet the PCI DSS patching requirements, so they need compensating controls and an active migration plan (PCI SSC, 2013). Source: PCI Security Standards Council, \"FAQ 1130: Are operating systems that are no longer supported by the vendor non-compliant with the PCI DSS?\" (https://www.pcisecuritystandards.org/faq/articles/Frequently_Asked_Question/are-operating-systems-that-are-no-longer-supported-by-the-vendor-non-compliant-with-the-pci-dss/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#pci-ssc-faq-1130-2013-06-unsupported-os-cannot-meet-patch-requirements." }, { "id": "pci-ssc-faq-1130-2013-06-internet-facing-unsupported-os-automatic-asv-scan-failure", "family": "exposure-security", "statement": "An internet-facing server on an unsupported operating system is reported as an automatic failure in a PCI DSS approved scanning vendor (ASV) scan, the PCI Security Standards Council's FAQ 1130 states (PCI SSC, 2013).", "short_statement": null, "short_refs": null, "value": null, "unit": "position (no figure)", "display_value": "Automatic ASV failure", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (card payment environments)", "period": "2013-06", "population": "Entities assessed against PCI DSS", "sample_n": null, "publisher": "PCI Security Standards Council", "source_title": "FAQ 1130: Are operating systems that are no longer supported by the vendor non-compliant with the PCI DSS?", "source_url": "https://www.pcisecuritystandards.org/faq/articles/Frequently_Asked_Question/are-operating-systems-that-are-no-longer-supported-by-the-vendor-non-compliant-with-the-pci-dss/", "source_type": "primary", "source_access": "open", "published_at": "2013-06-01", "accessed_at": "2026-10-14", "quote": "if an unsupported operating system is Internet-facing, it will be detected and reported as an automatic failure by an ASV scan.", "locator": "FAQ article 1130 (dated June 2013), paragraphs 1-4; the article URL renders the text client-side, so the saved copy raw/exposure-security/pci-ssc-faq-1130.html is the verified document", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Applies to any vendor-unsupported OS, including Windows Server 2012/2012 R2 after 13 October 2026 without ESU coverage; the FAQ predates those dates.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#pci-ssc-faq-1130-2013-06-internet-facing-unsupported-os-automatic-asv-scan-failure", "citation_text": "An internet-facing server on an unsupported operating system is reported as an automatic failure in a PCI DSS approved scanning vendor (ASV) scan, the PCI Security Standards Council's FAQ 1130 states (PCI SSC, 2013). Source: PCI Security Standards Council, \"FAQ 1130: Are operating systems that are no longer supported by the vendor non-compliant with the PCI DSS?\" (https://www.pcisecuritystandards.org/faq/articles/Frequently_Asked_Question/are-operating-systems-that-are-no-longer-supported-by-the-vendor-non-compliant-with-the-pci-dss/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#pci-ssc-faq-1130-2013-06-internet-facing-unsupported-os-automatic-asv-scan-failure." }, { "id": "bsi-2023-ops-1-1-3-a15-unsupported-products-must-not-be-used-unless-safe", "family": "exposure-security", "statement": "Germany's BSI requires, as a basic IT-Grundschutz control (OPS.1.1.3.A15, 2023 edition), that hardware or software no longer supported by its maker be used only if checked to run securely, and otherwise not used at all (BSI, 2023).", "short_statement": null, "short_refs": null, "value": null, "unit": "position (no figure)", "display_value": "Basic requirement", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Germany", "period": "2023", "population": "Organisations applying BSI IT-Grundschutz (mandatory for German federal agencies)", "sample_n": null, "publisher": "Bundesamt für Sicherheit in der Informationstechnik (BSI)", "source_title": "IT-Grundschutz-Kompendium Edition 2023, OPS.1.1.3 Patch- und Änderungsmanagement", "source_url": "https://www.bsi.bund.de/SharedDocs/Downloads/DE/BSI/Grundschutz/IT-GS-Kompendium_Einzel_PDFs_2023/04_OPS_Betrieb/OPS_1_1_3_Patch_und_Aenderungsmanagement_Edition_2023.pdf?__blob=publicationFile&v=3", "source_type": "primary", "source_access": "open", "published_at": "2023-02-01", "accessed_at": "2026-10-14", "quote": "Falls Hardware- oder Software-Produkte eingesetzt werden sollen, die nicht mehr von den Herstellenden unterstützt werden oder für die kein Support mehr vorhanden ist, MUSS geprüft werden, ob diese dennoch sicher betrieben werden können.", "locator": "Requirement OPS.1.1.3.A15 'Regelmäßige Aktualisierung von IT-Systemen und Software' (B = basic), section 3.1; saved raw/exposure-security/pdf/bsi-2023-ops-1-1-3-patch-aenderungsmanagement.pdf", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Next sentence: 'Ist dies nicht der Fall, DÜRFEN diese Hardware- oder Software-Produkte NICHT mehr verwendet werden.' (If not, they MUST NOT be used.) The 2023 Windows Server module SYS.1.2.3 covers 2016/2019/2022 and points 2012 users to module SYS.1.2.2 (saved pdf/bsi-2023-sys-1-2-3-windows-server.pdf); no BSI warning specific to the Windows Server 2012 deadline was found. Edition date approximate (2023 edition, published February 2023).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bsi-2023-ops-1-1-3-a15-unsupported-products-must-not-be-used-unless-safe", "citation_text": "Germany's BSI requires, as a basic IT-Grundschutz control (OPS.1.1.3.A15, 2023 edition), that hardware or software no longer supported by its maker be used only if checked to run securely, and otherwise not used at all (BSI, 2023). Source: Bundesamt für Sicherheit in der Informationstechnik (BSI), \"IT-Grundschutz-Kompendium Edition 2023, OPS.1.1.3 Patch- und Änderungsmanagement\" (https://www.bsi.bund.de/SharedDocs/Downloads/DE/BSI/Grundschutz/IT-GS-Kompendium_Einzel_PDFs_2023/04_OPS_Betrieb/OPS_1_1_3_Patch_und_Aenderungsmanagement_Edition_2023.pdf?__blob=publicationFile&v=3). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bsi-2023-ops-1-1-3-a15-unsupported-products-must-not-be-used-unless-safe." }, { "id": "techzine-2023-09-01-lansweeper-windows-server-2012-share-20-94pct", "family": "install-base-audits", "statement": "20.9% of 1.3 million Windows Server instances inventoried by Lansweeper at more than 35,000 organisations were still running Windows Server 2012 or 2012 R2 five weeks before its 10 October 2023 end of support (Lansweeper data via Techzine, 2023).", "short_statement": "**20.9%** of 1.3 million Windows Server instances in an IT-inventory audit ran 2012 or 2012 R2 five weeks before support ended (Lansweeper via Techzine, 2023).", "short_refs": null, "value": 20.94, "unit": "% of Windows Server instances inventoried by Lansweeper", "display_value": "20.9%", "display_label": "1.3 million instances at 35,000+ organisations inventoried by Lansweeper, September 2023 (vendor data via Techzine)", "display_hook": null, "row_label": "September 2023: Windows Server instances still on 2012 or 2012 R2", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2023-09", "population": "1.3 million Windows Server instances at more than 35,000 organisations inventoried by Lansweeper's IT asset-management software (vendor scan data, reported by Techzine with the chart caption 'Source: Lansweeper')", "sample_n": 1300000, "publisher": "Techzine (reporting Lansweeper data)", "source_title": "Old Windows Servers open door for intruders, quarter of organizations must upgrade soon", "source_url": "https://www.techzine.eu/news/security/110828/old-windows-servers-open-door-for-intruders-quarter-of-organizations-must-upgrade-soon/", "source_type": "secondary", "source_access": "open", "published_at": "2023-09-01", "accessed_at": "2026-10-14", "quote": "Lansweeper surveyed 1.3 million instances of Windows Server running at more than 35,000 organizations. ... while 6.72 percent already have outdated Windows Server installations running ... 20.94 percent are still using Windows Server 2012.", "locator": "Second and third paragraphs, under the chart captioned 'Source: Lansweeper'", "derived": false, "formula": null, "headline": true, "series": "lansweeper-windows-server-version-share", "history": [], "notes": "Vendor scan data (Lansweeper) as reported by Techzine, chart captioned 'Source: Lansweeper', no link to the Lansweeper post. Lansweeper's own post (community.lansweeper.com End-of-Life updates, ba-p/70556) now redirects to lansweeper.com/blog/eol/windows-server-end-of-life/ (dated 16 June 2026), which carries no figures; the Wayback Machine returned 403/429 to every request on 2026-10-14 and archive.today holds no capture, so the trade-press report is the fetched document. Direct curl of Techzine is blocked by a Cloudflare browser check; a second WebFetch on 2026-10-14 returned all three quoted fragments verbatim (author Erik van Klinken, 1 September 2023, 1:24 pm; the chart image, alt text 'Einde levensduur Windows-server', is not machine-readable, so the version mix behind it is not recorded); raw/ holds the fetch transcripts.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techzine-2023-09-01-lansweeper-windows-server-2012-share-20-94pct", "citation_text": "20.9% of 1.3 million Windows Server instances inventoried by Lansweeper at more than 35,000 organisations were still running Windows Server 2012 or 2012 R2 five weeks before its 10 October 2023 end of support (Lansweeper data via Techzine, 2023). Source: Techzine (reporting Lansweeper data), \"Old Windows Servers open door for intruders, quarter of organizations must upgrade soon\" (https://www.techzine.eu/news/security/110828/old-windows-servers-open-door-for-intruders-quarter-of-organizations-must-upgrade-soon/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techzine-2023-09-01-lansweeper-windows-server-2012-share-20-94pct." }, { "id": "techzine-2023-09-01-lansweeper-windows-server-unsupported-share-6-72pct", "family": "install-base-audits", "statement": "6.7% of 1.3 million Windows Server instances inventoried by Lansweeper were already running versions out of Microsoft support (Windows Server 2008 R2 and older) in September 2023, before Server 2012 joined them (Lansweeper data via Techzine, 2023).", "short_statement": "In a September 2023 IT-inventory audit, **6.7%** of Windows Server instances were already on versions past support, 2008 R2 and older.", "short_refs": null, "value": 6.72, "unit": "% of Windows Server instances inventoried by Lansweeper", "display_value": "6.7%", "display_label": "1.3 million instances inventoried by Lansweeper, September 2023 (vendor data via Techzine)", "display_hook": null, "row_label": "September 2023: already on an unsupported version", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2023-09", "population": "1.3 million Windows Server instances at more than 35,000 organisations inventoried by Lansweeper's IT asset-management software (vendor scan data, reported by Techzine with the chart caption 'Source: Lansweeper')", "sample_n": 1300000, "publisher": "Techzine (reporting Lansweeper data)", "source_title": "Old Windows Servers open door for intruders, quarter of organizations must upgrade soon", "source_url": "https://www.techzine.eu/news/security/110828/old-windows-servers-open-door-for-intruders-quarter-of-organizations-must-upgrade-soon/", "source_type": "secondary", "source_access": "open", "published_at": "2023-09-01", "accessed_at": "2026-10-14", "quote": "while 6.72 percent already have outdated Windows Server installations running", "locator": "Third paragraph, under the chart captioned 'Source: Lansweeper'", "derived": false, "formula": null, "headline": false, "series": "lansweeper-windows-server-version-share", "history": [], "notes": "Vendor scan data (Lansweeper) as reported by Techzine, chart captioned 'Source: Lansweeper', no link to the Lansweeper post. Lansweeper's own post (community.lansweeper.com End-of-Life updates, ba-p/70556) now redirects to lansweeper.com/blog/eol/windows-server-end-of-life/ (dated 16 June 2026), which carries no figures; the Wayback Machine returned 403/429 to every request on 2026-10-14 and archive.today holds no capture, so the trade-press report is the fetched document. Direct curl of Techzine is blocked by a Cloudflare browser check; a second WebFetch on 2026-10-14 returned all three quoted fragments verbatim (author Erik van Klinken, 1 September 2023, 1:24 pm; the chart image, alt text 'Einde levensduur Windows-server', is not machine-readable, so the version mix behind it is not recorded); raw/ holds the fetch transcripts. Adding the Server 2012 share gives 27.66% of instances unsupported once ESU is excluded (derived record lansweeper-2023-09-windows-server-2012-plus-already-unsupported-27-66pct-derived).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techzine-2023-09-01-lansweeper-windows-server-unsupported-share-6-72pct", "citation_text": "6.7% of 1.3 million Windows Server instances inventoried by Lansweeper were already running versions out of Microsoft support (Windows Server 2008 R2 and older) in September 2023, before Server 2012 joined them (Lansweeper data via Techzine, 2023). Source: Techzine (reporting Lansweeper data), \"Old Windows Servers open door for intruders, quarter of organizations must upgrade soon\" (https://www.techzine.eu/news/security/110828/old-windows-servers-open-door-for-intruders-quarter-of-organizations-must-upgrade-soon/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techzine-2023-09-01-lansweeper-windows-server-unsupported-share-6-72pct." }, { "id": "techzine-2023-09-01-lansweeper-windows-server-instances-inventoried-1-3-million", "family": "install-base-audits", "statement": "1.3 million Windows Server instances at more than 35,000 organisations made up the Lansweeper inventory sample behind its September 2023 Windows Server 2012 end-of-support figures (Lansweeper data via Techzine, 2023).", "short_statement": "An IT-inventory audit in September 2023 covered **1.3 million** Windows Server instances at more than 35,000 organisations.", "short_refs": null, "value": 1300000, "unit": "Windows Server instances inventoried (sample size)", "display_value": "1.3 million", "display_label": "", "display_hook": null, "row_label": "September 2023: instances in the sample", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2023-09", "population": "1.3 million Windows Server instances at more than 35,000 organisations inventoried by Lansweeper's IT asset-management software (vendor scan data, reported by Techzine with the chart caption 'Source: Lansweeper')", "sample_n": 1300000, "publisher": "Techzine (reporting Lansweeper data)", "source_title": "Old Windows Servers open door for intruders, quarter of organizations must upgrade soon", "source_url": "https://www.techzine.eu/news/security/110828/old-windows-servers-open-door-for-intruders-quarter-of-organizations-must-upgrade-soon/", "source_type": "secondary", "source_access": "open", "published_at": "2023-09-01", "accessed_at": "2026-10-14", "quote": "Lansweeper surveyed 1.3 million instances of Windows Server running at more than 35,000 organizations.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Sample-size record for the two Lansweeper 2023 shares. Vendor scan data (Lansweeper) as reported by Techzine, chart captioned 'Source: Lansweeper', no link to the Lansweeper post. Lansweeper's own post (community.lansweeper.com End-of-Life updates, ba-p/70556) now redirects to lansweeper.com/blog/eol/windows-server-end-of-life/ (dated 16 June 2026), which carries no figures; the Wayback Machine returned 403/429 to every request on 2026-10-14 and archive.today holds no capture, so the trade-press report is the fetched document. Direct curl of Techzine is blocked by a Cloudflare browser check; a second WebFetch on 2026-10-14 returned all three quoted fragments verbatim (author Erik van Klinken, 1 September 2023, 1:24 pm; the chart image, alt text 'Einde levensduur Windows-server', is not machine-readable, so the version mix behind it is not recorded); raw/ holds the fetch transcripts.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techzine-2023-09-01-lansweeper-windows-server-instances-inventoried-1-3-million", "citation_text": "1.3 million Windows Server instances at more than 35,000 organisations made up the Lansweeper inventory sample behind its September 2023 Windows Server 2012 end-of-support figures (Lansweeper data via Techzine, 2023). Source: Techzine (reporting Lansweeper data), \"Old Windows Servers open door for intruders, quarter of organizations must upgrade soon\" (https://www.techzine.eu/news/security/110828/old-windows-servers-open-door-for-intruders-quarter-of-organizations-must-upgrade-soon/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techzine-2023-09-01-lansweeper-windows-server-instances-inventoried-1-3-million." }, { "id": "lansweeper-2023-09-windows-server-2012-plus-already-unsupported-27-66pct-derived", "family": "install-base-audits", "statement": "27.7% of the 1.3 million Windows Server instances inventoried by Lansweeper were on Windows Server 2012/2012 R2 or an older unsupported version in September 2023, the share that fell outside Microsoft support without ESU after 10 October 2023 (derived from Lansweeper data via Techzine, 2023).", "short_statement": null, "short_refs": null, "value": 27.66, "unit": "% of Windows Server instances inventoried by Lansweeper (derived sum)", "display_value": "27.7%", "display_label": "derived from Lansweeper's September 2023 audit of 1.3 million instances (via Techzine)", "display_hook": null, "row_label": "September 2023: outside support after 10 October 2023 without ESU (derived)", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2023-09", "population": "1.3 million Windows Server instances at more than 35,000 organisations inventoried by Lansweeper's IT asset-management software (vendor scan data, reported by Techzine with the chart caption 'Source: Lansweeper')", "sample_n": 1300000, "publisher": "Techzine (reporting Lansweeper data)", "source_title": "Old Windows Servers open door for intruders, quarter of organizations must upgrade soon", "source_url": "https://www.techzine.eu/news/security/110828/old-windows-servers-open-door-for-intruders-quarter-of-organizations-must-upgrade-soon/", "source_type": "secondary", "source_access": "open", "published_at": "2023-09-01", "accessed_at": "2026-10-14", "quote": "while 6.72 percent already have outdated Windows Server installations running ... 20.94 percent are still using Windows Server 2012.", "locator": "Third paragraph", "derived": true, "formula": "20.94 (Server 2012/2012 R2 share) + 6.72 (already unsupported share) = 27.66", "headline": false, "series": "", "history": [], "notes": "Techzine's headline 'quarter of organizations' is this sum read as a share of instances, not of organisations. Vendor scan data (Lansweeper) as reported by Techzine, chart captioned 'Source: Lansweeper', no link to the Lansweeper post. Lansweeper's own post (community.lansweeper.com End-of-Life updates, ba-p/70556) now redirects to lansweeper.com/blog/eol/windows-server-end-of-life/ (dated 16 June 2026), which carries no figures; the Wayback Machine returned 403/429 to every request on 2026-10-14 and archive.today holds no capture, so the trade-press report is the fetched document. Direct curl of Techzine is blocked by a Cloudflare browser check; a second WebFetch on 2026-10-14 returned all three quoted fragments verbatim (author Erik van Klinken, 1 September 2023, 1:24 pm; the chart image, alt text 'Einde levensduur Windows-server', is not machine-readable, so the version mix behind it is not recorded); raw/ holds the fetch transcripts.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#lansweeper-2023-09-windows-server-2012-plus-already-unsupported-27-66pct-derived", "citation_text": "27.7% of the 1.3 million Windows Server instances inventoried by Lansweeper were on Windows Server 2012/2012 R2 or an older unsupported version in September 2023, the share that fell outside Microsoft support without ESU after 10 October 2023 (derived from Lansweeper data via Techzine, 2023). Source: Techzine (reporting Lansweeper data), \"Old Windows Servers open door for intruders, quarter of organizations must upgrade soon\" (https://www.techzine.eu/news/security/110828/old-windows-servers-open-door-for-intruders-quarter-of-organizations-must-upgrade-soon/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#lansweeper-2023-09-windows-server-2012-plus-already-unsupported-27-66pct-derived." }, { "id": "theregister-2024-06-17-lansweeper-sql-server-unsupported-19-8pct", "family": "install-base-audits", "statement": "19.8% of just over one million SQL Server instances scanned by Lansweeper were past Microsoft support in June 2024, three weeks before SQL Server 2014 left extended support on 9 July 2024 (Lansweeper data via The Register, 2024).", "short_statement": "**19.8%** of the SQL Server instances Lansweeper scanned were past support in June 2024.", "short_refs": null, "value": 19.8, "unit": "% of SQL Server instances scanned by Lansweeper", "display_value": "19.8%", "display_label": "just over one million instances scanned by Lansweeper, June 2024 (vendor data via The Register)", "display_hook": null, "row_label": "Past support, June 2024", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2024-06", "population": "Just over one million SQL Server instances scanned by Lansweeper's agents in its customer base (vendor scan data, reported by The Register from an interview with Lansweeper's chief strategy officer Roel Decneut)", "sample_n": 1000000, "publisher": "The Register (reporting Lansweeper data)", "source_title": "Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)", "source_url": "https://www.theregister.com/2024/06/17/outdated_sql_server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-06-17", "accessed_at": "2026-10-14", "quote": "the biz scanned just over a million instances of SQL Server and found that 19.8 percent were now unsupported by Microsoft.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "lansweeper-sql-server-version-share", "history": [], "notes": "Vendor scan data (Lansweeper) reported by The Register; Lansweeper's own SQL Server end-of-life guide (lansweeper.com/blog/eol/a-comprehensive-guide-to-sql-server-end-of-life/, by Esben Dochy, 17 June 2026) carries only a later figure (17% on SQL Server 2014), recorded separately. Techzine (techzine.eu/news/applications/121426) and heise (heise.de/-9769622) restated the same figures in June 2024.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-unsupported-19-8pct", "citation_text": "19.8% of just over one million SQL Server instances scanned by Lansweeper were past Microsoft support in June 2024, three weeks before SQL Server 2014 left extended support on 9 July 2024 (Lansweeper data via The Register, 2024). Source: The Register (reporting Lansweeper data), \"Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)\" (https://www.theregister.com/2024/06/17/outdated_sql_server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-unsupported-19-8pct." }, { "id": "theregister-2024-06-17-lansweeper-sql-server-2014-share-12pct", "family": "install-base-audits", "statement": "12% of just over one million SQL Server instances scanned by Lansweeper were running SQL Server 2014 in June 2024, the version that left extended support on 9 July 2024 (Lansweeper data via The Register, 2024).", "short_statement": null, "short_refs": null, "value": 12, "unit": "% of SQL Server instances scanned by Lansweeper", "display_value": "12%", "display_label": "", "display_hook": null, "row_label": "SQL Server 2014, June 2024", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2024-06", "population": "Just over one million SQL Server instances scanned by Lansweeper's agents in its customer base (vendor scan data, reported by The Register from an interview with Lansweeper's chief strategy officer Roel Decneut)", "sample_n": 1000000, "publisher": "The Register (reporting Lansweeper data)", "source_title": "Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)", "source_url": "https://www.theregister.com/2024/06/17/outdated_sql_server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-06-17", "accessed_at": "2026-10-14", "quote": "Twelve percent were running SQL Server 2014, which is due to drop out of extended support on July 9", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "lansweeper-sql-server-version-share", "history": [], "notes": "Vendor scan data (Lansweeper) reported by The Register; Lansweeper's own SQL Server end-of-life guide (lansweeper.com/blog/eol/a-comprehensive-guide-to-sql-server-end-of-life/, by Esben Dochy, 17 June 2026) carries only a later figure (17% on SQL Server 2014), recorded separately. Techzine (techzine.eu/news/applications/121426) and heise (heise.de/-9769622) restated the same figures in June 2024.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-2014-share-12pct", "citation_text": "12% of just over one million SQL Server instances scanned by Lansweeper were running SQL Server 2014 in June 2024, the version that left extended support on 9 July 2024 (Lansweeper data via The Register, 2024). Source: The Register (reporting Lansweeper data), \"Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)\" (https://www.theregister.com/2024/06/17/outdated_sql_server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-2014-share-12pct." }, { "id": "theregister-2024-06-17-lansweeper-sql-server-unsupported-projected-32pct-july-2024", "family": "install-base-audits", "statement": "32% of SQL Server instances scanned by Lansweeper would be out of Microsoft support from 9 July 2024 once SQL Server 2014 left extended support, up from 19.8% in June 2024 (Lansweeper data via The Register, 2024).", "short_statement": null, "short_refs": null, "value": 32, "unit": "% of SQL Server instances scanned by Lansweeper (projected)", "display_value": "32%", "display_label": "", "display_hook": null, "row_label": "Past support once SQL Server 2014 left, July 2024", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2024-07", "population": "Just over one million SQL Server instances scanned by Lansweeper's agents in its customer base (vendor scan data, reported by The Register from an interview with Lansweeper's chief strategy officer Roel Decneut)", "sample_n": 1000000, "publisher": "The Register (reporting Lansweeper data)", "source_title": "Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)", "source_url": "https://www.theregister.com/2024/06/17/outdated_sql_server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-06-17", "accessed_at": "2026-10-14", "quote": "meaning the proportion will be 32 percent early next month.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "lansweeper-sql-server-version-share", "history": [], "notes": "Vendor scan data (Lansweeper) reported by The Register; Lansweeper's own SQL Server end-of-life guide (lansweeper.com/blog/eol/a-comprehensive-guide-to-sql-server-end-of-life/, by Esben Dochy, 17 June 2026) carries only a later figure (17% on SQL Server 2014), recorded separately. Techzine (techzine.eu/news/applications/121426) and heise (heise.de/-9769622) restated the same figures in June 2024. The 32% is the article's own sum of 19.8% unsupported and 12% on SQL Server 2014; Lansweeper's own June 2026 guide carries the same 32% ('32% are using an SQL server which has reached its extended end-of-life' per the search-engine snippet; the live page on 2026-10-14 shows 17% on SQL Server 2014 instead).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-unsupported-projected-32pct-july-2024", "citation_text": "32% of SQL Server instances scanned by Lansweeper would be out of Microsoft support from 9 July 2024 once SQL Server 2014 left extended support, up from 19.8% in June 2024 (Lansweeper data via The Register, 2024). Source: The Register (reporting Lansweeper data), \"Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)\" (https://www.theregister.com/2024/06/17/outdated_sql_server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-unsupported-projected-32pct-july-2024." }, { "id": "theregister-2024-06-17-lansweeper-sql-server-2019-share-44pct", "family": "install-base-audits", "statement": "44% of SQL Server instances scanned by Lansweeper were running SQL Server 2019 in June 2024, the most common version, with SQL Server 2017 at 13.5% and 2016 under 10% (Lansweeper data via The Register, 2024).", "short_statement": null, "short_refs": null, "value": 44, "unit": "% of SQL Server instances scanned by Lansweeper", "display_value": "44%", "display_label": "", "display_hook": null, "row_label": "SQL Server 2019, June 2024", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2024-06", "population": "Just over one million SQL Server instances scanned by Lansweeper's agents in its customer base (vendor scan data, reported by The Register from an interview with Lansweeper's chief strategy officer Roel Decneut)", "sample_n": 1000000, "publisher": "The Register (reporting Lansweeper data)", "source_title": "Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)", "source_url": "https://www.theregister.com/2024/06/17/outdated_sql_server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-06-17", "accessed_at": "2026-10-14", "quote": "According to Decneut, Lansweeper found 44 percent of instances running SQL Server 2019.", "locator": "Version-mix paragraph, second half of the article", "derived": false, "formula": null, "headline": false, "series": "lansweeper-sql-server-version-share", "history": [], "notes": "Vendor scan data (Lansweeper) reported by The Register; Lansweeper's own SQL Server end-of-life guide (lansweeper.com/blog/eol/a-comprehensive-guide-to-sql-server-end-of-life/, by Esben Dochy, 17 June 2026) carries only a later figure (17% on SQL Server 2014), recorded separately. Techzine (techzine.eu/news/applications/121426) and heise (heise.de/-9769622) restated the same figures in June 2024.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-2019-share-44pct", "citation_text": "44% of SQL Server instances scanned by Lansweeper were running SQL Server 2019 in June 2024, the most common version, with SQL Server 2017 at 13.5% and 2016 under 10% (Lansweeper data via The Register, 2024). Source: The Register (reporting Lansweeper data), \"Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)\" (https://www.theregister.com/2024/06/17/outdated_sql_server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-2019-share-44pct." }, { "id": "theregister-2024-06-17-lansweeper-sql-server-2008-share-just-under-8pct", "family": "install-base-audits", "statement": "Just under 8% of SQL Server instances scanned by Lansweeper were still running SQL Server 2008 in June 2024, five years after its July 2019 end of extended support, with SQL Server 2012 at 9% (Lansweeper data via The Register, 2024).", "short_statement": null, "short_refs": null, "value": 8, "unit": "% of SQL Server instances scanned by Lansweeper (just under)", "display_value": "under 8%", "display_label": "", "display_hook": null, "row_label": "SQL Server 2008, June 2024", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2024-06", "population": "Just over one million SQL Server instances scanned by Lansweeper's agents in its customer base (vendor scan data, reported by The Register from an interview with Lansweeper's chief strategy officer Roel Decneut)", "sample_n": 1000000, "publisher": "The Register (reporting Lansweeper data)", "source_title": "Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)", "source_url": "https://www.theregister.com/2024/06/17/outdated_sql_server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-06-17", "accessed_at": "2026-10-14", "quote": "After SQL Server 2014, at 12 percent, SQL Server 2012 accounts for 9 percent. SQL Server 2008 hovers at just under 8 percent, and so it goes on.", "locator": "Version-mix paragraph", "derived": false, "formula": null, "headline": false, "series": "lansweeper-sql-server-version-share", "history": [], "notes": "Vendor scan data (Lansweeper) reported by The Register; Lansweeper's own SQL Server end-of-life guide (lansweeper.com/blog/eol/a-comprehensive-guide-to-sql-server-end-of-life/, by Esben Dochy, 17 June 2026) carries only a later figure (17% on SQL Server 2014), recorded separately. Techzine (techzine.eu/news/applications/121426) and heise (heise.de/-9769622) restated the same figures in June 2024. Value recorded as 8 for 'just under 8 percent'; the article also reports a few instances of SQL Server 7 (1998).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-2008-share-just-under-8pct", "citation_text": "Just under 8% of SQL Server instances scanned by Lansweeper were still running SQL Server 2008 in June 2024, five years after its July 2019 end of extended support, with SQL Server 2012 at 9% (Lansweeper data via The Register, 2024). Source: The Register (reporting Lansweeper data), \"Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)\" (https://www.theregister.com/2024/06/17/outdated_sql_server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-2008-share-just-under-8pct." }, { "id": "theregister-2024-06-17-lansweeper-sql-server-2017-share-13-5pct", "family": "install-base-audits", "statement": "13.5% of SQL Server instances scanned by Lansweeper were running SQL Server 2017 in June 2024, the second most common version after SQL Server 2019 (Lansweeper data via The Register, 2024).", "short_statement": null, "short_refs": null, "value": 13.5, "unit": "% of SQL Server instances scanned by Lansweeper", "display_value": "13.5%", "display_label": "", "display_hook": null, "row_label": "SQL Server 2017, June 2024", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2024-06", "population": "Just over one million SQL Server instances scanned by Lansweeper's agents in its customer base (vendor scan data, reported by The Register from an interview with Lansweeper's chief strategy officer Roel Decneut)", "sample_n": 1000000, "publisher": "The Register (reporting Lansweeper data)", "source_title": "Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)", "source_url": "https://www.theregister.com/2024/06/17/outdated_sql_server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-06-17", "accessed_at": "2026-10-14", "quote": "SQL Server 2017 accounts for 13.5 percent, and 2016 only accounts for less than 10 percent before moving on to older, obsolete versions.", "locator": "Version-mix paragraph", "derived": false, "formula": null, "headline": false, "series": "lansweeper-sql-server-version-share", "history": [], "notes": "Vendor scan data (Lansweeper) reported by The Register; Lansweeper's own SQL Server end-of-life guide (lansweeper.com/blog/eol/a-comprehensive-guide-to-sql-server-end-of-life/, by Esben Dochy, 17 June 2026) carries only a later figure (17% on SQL Server 2014), recorded separately. Techzine (techzine.eu/news/applications/121426) and heise (heise.de/-9769622) restated the same figures in June 2024.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-2017-share-13-5pct", "citation_text": "13.5% of SQL Server instances scanned by Lansweeper were running SQL Server 2017 in June 2024, the second most common version after SQL Server 2019 (Lansweeper data via The Register, 2024). Source: The Register (reporting Lansweeper data), \"Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)\" (https://www.theregister.com/2024/06/17/outdated_sql_server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-2017-share-13-5pct." }, { "id": "theregister-2024-06-17-lansweeper-sql-server-2012-share-9pct", "family": "install-base-audits", "statement": "9% of SQL Server instances scanned by Lansweeper were running SQL Server 2012 in June 2024, two years after its 12 July 2022 end of extended support (Lansweeper data via The Register, 2024).", "short_statement": null, "short_refs": null, "value": 9, "unit": "% of SQL Server instances scanned by Lansweeper", "display_value": "9%", "display_label": "", "display_hook": null, "row_label": "SQL Server 2012, June 2024", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2024-06", "population": "Just over one million SQL Server instances scanned by Lansweeper's agents in its customer base (vendor scan data, reported by The Register from an interview with Lansweeper's chief strategy officer Roel Decneut)", "sample_n": 1000000, "publisher": "The Register (reporting Lansweeper data)", "source_title": "Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)", "source_url": "https://www.theregister.com/2024/06/17/outdated_sql_server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-06-17", "accessed_at": "2026-10-14", "quote": "After SQL Server 2014, at 12 percent, SQL Server 2012 accounts for 9 percent.", "locator": "Version-mix paragraph", "derived": false, "formula": null, "headline": false, "series": "lansweeper-sql-server-version-share", "history": [], "notes": "Vendor scan data (Lansweeper) reported by The Register; Lansweeper's own SQL Server end-of-life guide (lansweeper.com/blog/eol/a-comprehensive-guide-to-sql-server-end-of-life/, by Esben Dochy, 17 June 2026) carries only a later figure (17% on SQL Server 2014), recorded separately. Techzine (techzine.eu/news/applications/121426) and heise (heise.de/-9769622) restated the same figures in June 2024.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-2012-share-9pct", "citation_text": "9% of SQL Server instances scanned by Lansweeper were running SQL Server 2012 in June 2024, two years after its 12 July 2022 end of extended support (Lansweeper data via The Register, 2024). Source: The Register (reporting Lansweeper data), \"Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)\" (https://www.theregister.com/2024/06/17/outdated_sql_server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-2012-share-9pct." }, { "id": "theregister-2024-06-17-lansweeper-sql-server-instances-scanned-just-over-1-million", "family": "install-base-audits", "statement": "Just over 1 million SQL Server instances scanned by Lansweeper's agents made up the sample behind its June 2024 SQL Server version shares (Lansweeper data via The Register, 2024).", "short_statement": null, "short_refs": null, "value": 1000000, "unit": "SQL Server instances scanned (sample size, 'just over a million')", "display_value": "just over 1 million", "display_label": "", "display_hook": null, "row_label": "Instances in the June 2024 sample", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2024-06", "population": "Just over one million SQL Server instances scanned by Lansweeper's agents in its customer base (vendor scan data, reported by The Register from an interview with Lansweeper's chief strategy officer Roel Decneut)", "sample_n": 1000000, "publisher": "The Register (reporting Lansweeper data)", "source_title": "Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)", "source_url": "https://www.theregister.com/2024/06/17/outdated_sql_server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-06-17", "accessed_at": "2026-10-14", "quote": "the biz scanned just over a million instances of SQL Server", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Sample-size record for the SQL Server 2024 shares. Vendor scan data (Lansweeper) reported by The Register; Lansweeper's own SQL Server end-of-life guide (lansweeper.com/blog/eol/a-comprehensive-guide-to-sql-server-end-of-life/, by Esben Dochy, 17 June 2026) carries only a later figure (17% on SQL Server 2014), recorded separately. Techzine (techzine.eu/news/applications/121426) and heise (heise.de/-9769622) restated the same figures in June 2024.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-instances-scanned-just-over-1-million", "citation_text": "Just over 1 million SQL Server instances scanned by Lansweeper's agents made up the sample behind its June 2024 SQL Server version shares (Lansweeper data via The Register, 2024). Source: The Register (reporting Lansweeper data), \"Nearly 20% of running Microsoft SQL Servers have passed end of support (The Register, Richard Speed, 17 June 2024)\" (https://www.theregister.com/2024/06/17/outdated_sql_server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2024-06-17-lansweeper-sql-server-instances-scanned-just-over-1-million." }, { "id": "lansweeper-2026-06-17-sql-server-2014-share-17pct", "family": "install-base-audits", "statement": "17% of SQL Servers in Lansweeper's data were still running SQL Server 2014 in 2026, two years after its 9 July 2024 end of extended support, needing an ESU subscription or an upgrade (Lansweeper, 2026).", "short_statement": null, "short_refs": null, "value": 17, "unit": "% of SQL Server instances in Lansweeper's customer data", "display_value": "17%", "display_label": "Lansweeper's SQL Server end-of-life guide, June 2026 (vendor data)", "display_hook": null, "row_label": "SQL Server 2014, 2026", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2026-06", "population": "SQL Server instances in Lansweeper's customer inventories (vendor scan data; sample size not stated on the page)", "sample_n": null, "publisher": "Lansweeper", "source_title": "A Comprehensive Guide to SQL Server End of Life (Esben Dochy, 17 June 2026, updated 2 October 2026)", "source_url": "https://www.lansweeper.com/blog/eol/a-comprehensive-guide-to-sql-server-end-of-life/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-06-17", "accessed_at": "2026-10-14", "quote": "According to our data, 17% of SQL servers are still running SQL Server 2014 and require the ESU subscription or need to be upgraded to a newer supported version of SQL Server.", "locator": "Section 'SQL Server 2014 End of Life'", "derived": false, "formula": null, "headline": false, "series": "lansweeper-sql-server-version-share", "history": [], "notes": "Lansweeper's own publication (page datePublished 2026-06-17, dateModified 2026-10-02; the community post sql-server-2014-eol/ba-p/75084 and lansweeper.com/?p=19627 both resolve here). No sample size or month is stated; period is the page's publication month. Compare 12% on SQL Server 2014 in June 2024 (The Register): the share on 2014 ROSE in Lansweeper's data, which may reflect a changed customer base or denominator rather than new installs; label as vendor data, not a trend.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#lansweeper-2026-06-17-sql-server-2014-share-17pct", "citation_text": "17% of SQL Servers in Lansweeper's data were still running SQL Server 2014 in 2026, two years after its 9 July 2024 end of extended support, needing an ESU subscription or an upgrade (Lansweeper, 2026). Source: Lansweeper, \"A Comprehensive Guide to SQL Server End of Life (Esben Dochy, 17 June 2026, updated 2 October 2026)\" (https://www.lansweeper.com/blog/eol/a-comprehensive-guide-to-sql-server-end-of-life/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#lansweeper-2026-06-17-sql-server-2014-share-17pct." }, { "id": "theregister-2026-03-02-lansweeper-windows-server-2016-share-20-3pct-of-servers-monitored", "family": "install-base-audits", "statement": "20.3% of all the servers Lansweeper monitors were running Windows Server 2016 in March 2026, ten months before its 12 January 2027 end of extended support (Lansweeper data via The Register, 2026).", "short_statement": "**20.3%** of the servers an IT-inventory vendor monitors ran Windows Server 2016 in March 2026, ten months before support ends (Lansweeper via The Register, 2026).", "short_refs": null, "value": 20.3, "unit": "% of servers monitored by Lansweeper", "display_value": "20.3%", "display_label": "Lansweeper telemetry as reported by The Register, March 2026 (vendor data; sample size not stated)", "display_hook": null, "row_label": "March 2026: servers on Windows Server 2016", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2026-03", "population": "Servers monitored by Lansweeper's asset-discovery platform at its customers (vendor telemetry; the article gives no instance count or date of extraction)", "sample_n": null, "publisher": "The Register (reporting Lansweeper data)", "source_title": "Windows 11 tops market share as 10 faces extended farewell: More than a fifth of servers still on Windows Server 2016 (The Register, Richard Speed, 2 March 2026)", "source_url": "https://www.theregister.com/software/2026/03/02/windows-11-tops-market-share-as-10-faces-extended-farewell/4577624", "source_type": "secondary", "source_access": "open", "published_at": "2026-03-02", "accessed_at": "2026-10-14", "quote": "According to Lansweeper, Windows Server 2016 has a 20.3 percent share of all the servers it monitors.", "locator": "Paragraph beginning 'While the march of Windows 11', after the 'MORE CONTEXT' box; subheading 'More than a fifth of servers still on Windows Server 2016'", "derived": false, "formula": null, "headline": true, "series": "lansweeper-windows-server-version-share", "history": [], "notes": "THE 'ONE IN FIVE ON 2016' TRAIL: this is the only dated, attributed appearance of the figure found. The Register prints it as Lansweeper data with a quote from Lansweeper's Principal Technical Evangelist Esben Dochy but links no Lansweeper document; searches of lansweeper.com/blog, lansweeper.com/blog/eol, the community End-of-Life Updates board (which now redirects to the blog) and the web on 2026-10-14 found no Lansweeper publication of 20.3% or any Windows Server 2016 share. Jimber.io's 'roughly one in five enterprise servers still runs Windows Server 2016' (18 August 2026) matches this figure rounded and cites unnamed 'telemetry'. Treat as unverified-by-primary: a trade-press report of vendor telemetry; the page may use it only with The Register named as the document and Lansweeper as the attributed source. The same article gives Lansweeper's Windows 10 2016 LTSB share (0.5% of Windows devices; 19.8% within LTSC/LTSB). OVERLAP: the next-versions-adoption family recorded the same figure under this same id (with the short URL theregister.com/2026/03/02/windows_11_market_share/ and period 2026-02); the id is kept identical so the merge holds one record; install-base-audits is listed first in the family table, so this copy (canonical URL from the page's link rel=canonical) is the owner's. Lansweeper's own blog (sitemap of 761 posts read 2026-10-14) has no Windows Server version share in 2024-2026; its 7 September 2026 post on endpoint protection (7.6% of servers with no detected protection) is exposure data, not install base.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2026-03-02-lansweeper-windows-server-2016-share-20-3pct-of-servers-monitored", "citation_text": "20.3% of all the servers Lansweeper monitors were running Windows Server 2016 in March 2026, ten months before its 12 January 2027 end of extended support (Lansweeper data via The Register, 2026). Source: The Register (reporting Lansweeper data), \"Windows 11 tops market share as 10 faces extended farewell: More than a fifth of servers still on Windows Server 2016 (The Register, Richard Speed, 2 March 2026)\" (https://www.theregister.com/software/2026/03/02/windows-11-tops-market-share-as-10-faces-extended-farewell/4577624). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2026-03-02-lansweeper-windows-server-2016-share-20-3pct-of-servers-monitored." }, { "id": "spiceworks-2016-08-09-windows-server-share-of-server-os-87-7pct", "family": "install-base-audits", "statement": "87.7% of the physical servers and virtual machines in Spiceworks' network ran Microsoft Windows Server in mid-2016, with Linux on most of the rest (Spiceworks, 2016).", "short_statement": null, "short_refs": null, "value": 87.7, "unit": "% of physical servers and VMs in the Spiceworks network (server OS share)", "display_value": "87.7%", "display_label": "Spiceworks network data, mid-2016 (vendor telemetry)", "display_hook": null, "row_label": "Servers and VMs on Windows Server, mid-2016", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly small and mid-sized businesses)", "period": "2016-06", "population": "Physical servers and virtual machines in the Spiceworks network (organisations running Spiceworks' free inventory software, mostly on-premises), by server operating system", "sample_n": null, "publisher": "Spiceworks", "source_title": "Server Virtualization and OS Trends (Spiceworks Community, Peter Tsai, 9 August 2016)", "source_url": "https://community.spiceworks.com/t/server-virtualization-and-os-trends/970183", "source_type": "manufacturer", "source_access": "open", "published_at": "2016-08-09", "accessed_at": "2026-10-14", "quote": "Fully 87.7% of the physical servers and VMs in the Spiceworks network (which are mostly on-premises) run Microsoft Windows Server.", "locator": "Section 'Server Operating System Market Share', first paragraph", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-os-version-mix", "history": [], "notes": "Spiceworks' own publication, live on the migrated community site on 2026-10-14 (the old article URL community.spiceworks.com/networking/article/virtualization-os-server-market-share that RCPmag linked returns 'Page Not Found'). The topic is dated 9 August 2016 and its chart is titled 'On-Premises Server OS Market Share (August 2016)', while the text dates the Server 2003 data to June 2016 and trade press (Redmond Magazine 12 July, SC Media 13 July, RCPmag 14 July 2016) reported the same figures rounded, so the topic is a later posting of the July article; period is set to 2016-06. The Windows Server 2003 (17.9%), 2008 (45.4%) and 2012 (23.6%) shares and the 53% of organisations with at least one Server 2003 instance are the eol-history-2003-2008 family's reusable ids (spiceworks-2016-07-server-2003-share-of-server-os-18pct, spiceworks-2016-07-server-2008-most-used-server-os-45pct, spiceworks-2016-07-server-2012-share-of-server-os-24pct, spiceworks-2016-07-server-2003-at-least-one-instance-53pct, sourced to trade press); this post is their primary source, with one decimal. Full mix in install-base-audits-series-spiceworks-2016-server-os-mix.csv. Spiceworks network data: anonymised, aggregated inventory scans from organisations using Spiceworks' free IT-management software (mostly small and mid-sized businesses, mostly on-premises machines); vendor telemetry, not all servers.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-08-09-windows-server-share-of-server-os-87-7pct", "citation_text": "87.7% of the physical servers and virtual machines in Spiceworks' network ran Microsoft Windows Server in mid-2016, with Linux on most of the rest (Spiceworks, 2016). Source: Spiceworks, \"Server Virtualization and OS Trends (Spiceworks Community, Peter Tsai, 9 August 2016)\" (https://community.spiceworks.com/t/server-virtualization-and-os-trends/970183). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-08-09-windows-server-share-of-server-os-87-7pct." }, { "id": "spiceworks-2016-08-09-linux-share-of-server-os-11-7pct-derived", "family": "install-base-audits", "statement": "11.7% of the physical servers and virtual machines in Spiceworks' network ran Linux in mid-2016 (Red Hat Enterprise Linux 1.2%, other distributions 10.5%), against 87.7% on Windows Server (derived from Spiceworks, 2016).", "short_statement": null, "short_refs": null, "value": 11.7, "unit": "% of physical servers and VMs in the Spiceworks network (server OS share, derived sum)", "display_value": "11.7%", "display_label": "", "display_hook": null, "row_label": "Servers and VMs on Linux, mid-2016", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly small and mid-sized businesses)", "period": "2016-06", "population": "Physical servers and virtual machines in the Spiceworks network (organisations running Spiceworks' free inventory software, mostly on-premises), by server operating system", "sample_n": null, "publisher": "Spiceworks", "source_title": "Server Virtualization and OS Trends (Spiceworks Community, Peter Tsai, 9 August 2016)", "source_url": "https://community.spiceworks.com/t/server-virtualization-and-os-trends/970183", "source_type": "manufacturer", "source_access": "open", "published_at": "2016-08-09", "accessed_at": "2026-10-14", "quote": "Linux machines run up the bulk of the remaining machines, with Red Hat Enterprise Linux at 1.2% and all other Linux varieties coming in at a cumulative 10.5% of server OS market share.", "locator": "Section 'Server Operating System Market Share', closing sentence of the first paragraph", "derived": true, "formula": "1.2 (Red Hat Enterprise Linux) + 10.5 (all other Linux varieties) = 11.7", "headline": false, "series": "spiceworks-server-os-version-mix", "history": [], "notes": "Redmond Magazine (12 July 2016) printed this as 'Linux server software was used by 12 percent'. Spiceworks' own publication, live on the migrated community site on 2026-10-14 (the old article URL community.spiceworks.com/networking/article/virtualization-os-server-market-share that RCPmag linked returns 'Page Not Found'). The topic is dated 9 August 2016 and its chart is titled 'On-Premises Server OS Market Share (August 2016)', while the text dates the Server 2003 data to June 2016 and trade press (Redmond Magazine 12 July, SC Media 13 July, RCPmag 14 July 2016) reported the same figures rounded, so the topic is a later posting of the July article; period is set to 2016-06. The Windows Server 2003 (17.9%), 2008 (45.4%) and 2012 (23.6%) shares and the 53% of organisations with at least one Server 2003 instance are the eol-history-2003-2008 family's reusable ids (spiceworks-2016-07-server-2003-share-of-server-os-18pct, spiceworks-2016-07-server-2008-most-used-server-os-45pct, spiceworks-2016-07-server-2012-share-of-server-os-24pct, spiceworks-2016-07-server-2003-at-least-one-instance-53pct, sourced to trade press); this post is their primary source, with one decimal. Full mix in install-base-audits-series-spiceworks-2016-server-os-mix.csv. Spiceworks network data: anonymised, aggregated inventory scans from organisations using Spiceworks' free IT-management software (mostly small and mid-sized businesses, mostly on-premises machines); vendor telemetry, not all servers.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-08-09-linux-share-of-server-os-11-7pct-derived", "citation_text": "11.7% of the physical servers and virtual machines in Spiceworks' network ran Linux in mid-2016 (Red Hat Enterprise Linux 1.2%, other distributions 10.5%), against 87.7% on Windows Server (derived from Spiceworks, 2016). Source: Spiceworks, \"Server Virtualization and OS Trends (Spiceworks Community, Peter Tsai, 9 August 2016)\" (https://community.spiceworks.com/t/server-virtualization-and-os-trends/970183). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-08-09-linux-share-of-server-os-11-7pct-derived." }, { "id": "spiceworks-2016-08-09-windows-server-2000-share-of-server-os-0-9pct", "family": "install-base-audits", "statement": "0.9% of server operating systems in Spiceworks' network were still Windows Server 2000 in mid-2016, six years after its July 2010 end of extended support (Spiceworks, 2016).", "short_statement": null, "short_refs": null, "value": 0.9, "unit": "% of physical servers and VMs in the Spiceworks network (server OS share)", "display_value": "0.9%", "display_label": "", "display_hook": null, "row_label": "Servers and VMs on Windows Server 2000, mid-2016", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly small and mid-sized businesses)", "period": "2016-06", "population": "Physical servers and virtual machines in the Spiceworks network (organisations running Spiceworks' free inventory software, mostly on-premises), by server operating system", "sample_n": null, "publisher": "Spiceworks", "source_title": "Server Virtualization and OS Trends (Spiceworks Community, Peter Tsai, 9 August 2016)", "source_url": "https://community.spiceworks.com/t/server-virtualization-and-os-trends/970183", "source_type": "manufacturer", "source_access": "open", "published_at": "2016-08-09", "accessed_at": "2026-10-14", "quote": "On-Premises Server OS Market Share (August 2016) ... Windows Server 2000 ... 0.9%", "locator": "Chart image 'On-Premises Server OS Market Share (August 2016)' (saved as raw png): the 0.9% segment directly above 'Other Linux' (10.5%), in legend order Windows Server 2000, Red Hat Enterprise Linux (1.2%, confirmed in the text), Other (0.4%)", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-os-version-mix", "history": [], "notes": "Chart value read from the image; the post's text does not mention Windows Server 2000. Redmond Magazine (12 July 2016) printed 'Windows Server 2000 use at 1 percent'. Spiceworks' own publication, live on the migrated community site on 2026-10-14 (the old article URL community.spiceworks.com/networking/article/virtualization-os-server-market-share that RCPmag linked returns 'Page Not Found'). The topic is dated 9 August 2016 and its chart is titled 'On-Premises Server OS Market Share (August 2016)', while the text dates the Server 2003 data to June 2016 and trade press (Redmond Magazine 12 July, SC Media 13 July, RCPmag 14 July 2016) reported the same figures rounded, so the topic is a later posting of the July article; period is set to 2016-06. The Windows Server 2003 (17.9%), 2008 (45.4%) and 2012 (23.6%) shares and the 53% of organisations with at least one Server 2003 instance are the eol-history-2003-2008 family's reusable ids (spiceworks-2016-07-server-2003-share-of-server-os-18pct, spiceworks-2016-07-server-2008-most-used-server-os-45pct, spiceworks-2016-07-server-2012-share-of-server-os-24pct, spiceworks-2016-07-server-2003-at-least-one-instance-53pct, sourced to trade press); this post is their primary source, with one decimal. Full mix in install-base-audits-series-spiceworks-2016-server-os-mix.csv. Spiceworks network data: anonymised, aggregated inventory scans from organisations using Spiceworks' free IT-management software (mostly small and mid-sized businesses, mostly on-premises machines); vendor telemetry, not all servers.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-08-09-windows-server-2000-share-of-server-os-0-9pct", "citation_text": "0.9% of server operating systems in Spiceworks' network were still Windows Server 2000 in mid-2016, six years after its July 2010 end of extended support (Spiceworks, 2016). Source: Spiceworks, \"Server Virtualization and OS Trends (Spiceworks Community, Peter Tsai, 9 August 2016)\" (https://community.spiceworks.com/t/server-virtualization-and-os-trends/970183). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-08-09-windows-server-2000-share-of-server-os-0-9pct." }, { "id": "scmagazine-2016-07-13-restates-spiceworks-87-7pct-of-servers-as-88pct-of-organisations-servers", "family": "install-base-audits", "statement": "88% of 'organisations' servers' ran Windows Server in SC Media's July 2016 report of Spiceworks' inventory data, which Spiceworks gives as 87.7% of the physical servers and VMs in its network (SC Media, 2016).", "short_statement": null, "short_refs": null, "value": 88, "unit": "% (as restated; Spiceworks: 87.7% of servers and VMs in its network)", "display_value": "88%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Spiceworks network, as restated)", "period": "2016-06", "population": "Physical servers and virtual machines in the Spiceworks network (organisations running Spiceworks' free inventory software, mostly on-premises), by server operating system", "sample_n": null, "publisher": "SC Media (reporting Spiceworks data)", "source_title": "53% of organisations around the world still use Windows Server 2003 (SC Media, 13 July 2016)", "source_url": "https://www.scmagazine.com/news/53-of-organisations-around-the-world-still-use-windows-server-2003", "source_type": "secondary", "source_access": "open", "published_at": "2016-07-13", "accessed_at": "2026-10-14", "quote": "Almost all (88 percent) organisations' servers run the Microsoft Windows Server OS.", "locator": "Paragraph after the hypervisor figures (VMware 71%, Hyper-V 23%)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "RESTATEMENT RECORD. Drift is small: rounding, and 'organisations' servers' for 'physical servers and VMs in the Spiceworks network'. The URL redirects to scworld.com on 2026-10-14; curl of the original URL returned the article. Primary: spiceworks-2016-08-09-windows-server-share-of-server-os-87-7pct.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#scmagazine-2016-07-13-restates-spiceworks-87-7pct-of-servers-as-88pct-of-organisations-servers", "citation_text": "88% of 'organisations' servers' ran Windows Server in SC Media's July 2016 report of Spiceworks' inventory data, which Spiceworks gives as 87.7% of the physical servers and VMs in its network (SC Media, 2016). Source: SC Media (reporting Spiceworks data), \"53% of organisations around the world still use Windows Server 2003 (SC Media, 13 July 2016)\" (https://www.scmagazine.com/news/53-of-organisations-around-the-world-still-use-windows-server-2003). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#scmagazine-2016-07-13-restates-spiceworks-87-7pct-of-servers-as-88pct-of-organisations-servers." }, { "id": "spiceworks-2015-11-windows-server-2008-penetration-80pct", "family": "install-base-audits", "statement": "80% of organisations in Spiceworks' network ran at least one Windows Server 2008 instance in November 2015, the most widely present server OS, ahead of Windows Server 2003 at 59% (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 80, "unit": "% of organisations with at least one instance (penetration rate)", "display_value": "80%", "display_label": "Spiceworks network data, November 2015 (vendor telemetry)", "display_hook": null, "row_label": "Organisations with Windows Server 2008, November 2015", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly small and mid-sized businesses)", "period": "2015-11", "population": "Organisations in the Spiceworks network (anonymised, aggregated usage data from Spiceworks' free inventory software), share with at least one instance of each server OS ('penetration rate'), November 2015", "sample_n": null, "publisher": "Spiceworks", "source_title": "Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)", "source_url": "https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-12-02", "accessed_at": "2026-10-14", "quote": "Windows Server 2008 is present in most server rooms around the world, with a penetration rate of 80%, followed by Windows Server 2003 at 59%.", "locator": "Section 'Current worldwide server OS usage', first paragraph; chart 'Global Server OS Penetration Rates, November 2015'", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-os-penetration-2015-11", "history": [], "notes": "Full chart in install-base-audits-series-spiceworks-server-os-penetration-2015-11.csv. Penetration rate = share of organisations with at least one instance of the OS (Spiceworks' definition in the post), not a share of servers; the rates add to more than 100% because organisations run several versions. Spiceworks' own publication, live on the migrated community site (old URL community.spiceworks.com/topic/1289032-... redirects here; a Wayback snapshot of 12 August 2020 also exists). Spiceworks network data: anonymised, aggregated inventory scans from organisations using Spiceworks' free IT-management software (mostly small and mid-sized businesses, mostly on-premises machines); vendor telemetry, not all servers.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-11-windows-server-2008-penetration-80pct", "citation_text": "80% of organisations in Spiceworks' network ran at least one Windows Server 2008 instance in November 2015, the most widely present server OS, ahead of Windows Server 2003 at 59% (Spiceworks, 2015). Source: Spiceworks, \"Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)\" (https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-11-windows-server-2008-penetration-80pct." }, { "id": "spiceworks-2015-11-windows-server-2012-penetration-48pct", "family": "install-base-audits", "statement": "48% of organisations in Spiceworks' network ran at least one Windows Server 2012 instance in November 2015, three years after its release, against 80% with Windows Server 2008 (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 48, "unit": "% of organisations with at least one instance (penetration rate)", "display_value": "48%", "display_label": "", "display_hook": null, "row_label": "Organisations with Windows Server 2012, November 2015", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly small and mid-sized businesses)", "period": "2015-11", "population": "Organisations in the Spiceworks network (anonymised, aggregated usage data from Spiceworks' free inventory software), share with at least one instance of each server OS ('penetration rate'), November 2015", "sample_n": null, "publisher": "Spiceworks", "source_title": "Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)", "source_url": "https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-12-02", "accessed_at": "2026-10-14", "quote": "Global Server OS Penetration Rates November 2015 ... 48% ... Windows Server 2012", "locator": "Chart image 'Global Server OS Penetration Rates, November 2015' (saved as raw png), bar 'Windows Server 2012'", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-os-penetration-2015-11", "history": [], "notes": "Chart value read from the image; the post's text gives only the 2008, 2003 and 2000 rates. Penetration rate = share of organisations with at least one instance of the OS (Spiceworks' definition in the post), not a share of servers; the rates add to more than 100% because organisations run several versions. Spiceworks' own publication, live on the migrated community site (old URL community.spiceworks.com/topic/1289032-... redirects here; a Wayback snapshot of 12 August 2020 also exists). Spiceworks network data: anonymised, aggregated inventory scans from organisations using Spiceworks' free IT-management software (mostly small and mid-sized businesses, mostly on-premises machines); vendor telemetry, not all servers.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-11-windows-server-2012-penetration-48pct", "citation_text": "48% of organisations in Spiceworks' network ran at least one Windows Server 2012 instance in November 2015, three years after its release, against 80% with Windows Server 2008 (Spiceworks, 2015). Source: Spiceworks, \"Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)\" (https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-11-windows-server-2012-penetration-48pct." }, { "id": "spiceworks-2015-11-linux-server-penetration-30pct", "family": "install-base-audits", "statement": "30% of organisations in Spiceworks' network ran at least one Linux server in November 2015, against 80% running Windows Server 2008 (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 30, "unit": "% of organisations with at least one instance (penetration rate)", "display_value": "30%", "display_label": "", "display_hook": null, "row_label": "Organisations with a Linux server, November 2015", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly small and mid-sized businesses)", "period": "2015-11", "population": "Organisations in the Spiceworks network (anonymised, aggregated usage data from Spiceworks' free inventory software), share with at least one instance of each server OS ('penetration rate'), November 2015", "sample_n": null, "publisher": "Spiceworks", "source_title": "Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)", "source_url": "https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-12-02", "accessed_at": "2026-10-14", "quote": "Global Server OS Penetration Rates November 2015 ... 30% ... Linux", "locator": "Chart image 'Global Server OS Penetration Rates, November 2015' (saved as raw png), bar 'Linux'", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-os-penetration-2015-11", "history": [], "notes": "Chart value read from the image. Penetration rate = share of organisations with at least one instance of the OS (Spiceworks' definition in the post), not a share of servers; the rates add to more than 100% because organisations run several versions. Spiceworks' own publication, live on the migrated community site (old URL community.spiceworks.com/topic/1289032-... redirects here; a Wayback snapshot of 12 August 2020 also exists). Spiceworks network data: anonymised, aggregated inventory scans from organisations using Spiceworks' free IT-management software (mostly small and mid-sized businesses, mostly on-premises machines); vendor telemetry, not all servers.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-11-linux-server-penetration-30pct", "citation_text": "30% of organisations in Spiceworks' network ran at least one Linux server in November 2015, against 80% running Windows Server 2008 (Spiceworks, 2015). Source: Spiceworks, \"Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)\" (https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-11-linux-server-penetration-30pct." }, { "id": "spiceworks-2015-11-windows-server-2000-penetration-9pct", "family": "install-base-audits", "statement": "9% of organisations in Spiceworks' network were still running Windows Server 2000 in November 2015, five years after its July 2010 end of extended support (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 9, "unit": "% of organisations with at least one instance (penetration rate)", "display_value": "9%", "display_label": "", "display_hook": null, "row_label": "Organisations with Windows Server 2000, November 2015", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly small and mid-sized businesses)", "period": "2015-11", "population": "Organisations in the Spiceworks network (anonymised, aggregated usage data from Spiceworks' free inventory software), share with at least one instance of each server OS ('penetration rate'), November 2015", "sample_n": null, "publisher": "Spiceworks", "source_title": "Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)", "source_url": "https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-12-02", "accessed_at": "2026-10-14", "quote": "Additionally, 9% of organizations are running the even older Windows Server 2000.", "locator": "Section 'Current worldwide server OS usage', first paragraph", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-os-penetration-2015-11", "history": [], "notes": "Penetration rate = share of organisations with at least one instance of the OS (Spiceworks' definition in the post), not a share of servers; the rates add to more than 100% because organisations run several versions. Spiceworks' own publication, live on the migrated community site (old URL community.spiceworks.com/topic/1289032-... redirects here; a Wayback snapshot of 12 August 2020 also exists). Spiceworks network data: anonymised, aggregated inventory scans from organisations using Spiceworks' free IT-management software (mostly small and mid-sized businesses, mostly on-premises machines); vendor telemetry, not all servers.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-11-windows-server-2000-penetration-9pct", "citation_text": "9% of organisations in Spiceworks' network were still running Windows Server 2000 in November 2015, five years after its July 2010 end of extended support (Spiceworks, 2015). Source: Spiceworks, \"Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)\" (https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-11-windows-server-2000-penetration-9pct." }, { "id": "spiceworks-2015-11-windows-server-2003-penetration-59pct", "family": "install-base-audits", "statement": "59% of organisations in Spiceworks' network still ran at least one Windows Server 2003 instance in November 2015, four months after its 14 July 2015 end of support, down one point since July (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 59, "unit": "% of organisations with at least one instance (penetration rate)", "display_value": "59%", "display_label": "Spiceworks network data, November 2015 (vendor telemetry)", "display_hook": null, "row_label": "November 2015", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly small and mid-sized businesses)", "period": "2015-11", "population": "Organisations in the Spiceworks network (anonymised, aggregated usage data from Spiceworks' free inventory software), share with at least one instance of each server OS ('penetration rate'), November 2015", "sample_n": null, "publisher": "Spiceworks", "source_title": "Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)", "source_url": "https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-12-02", "accessed_at": "2026-10-14", "quote": "The OS has a global penetration rate (i.e., percentage of organizations with at least once instance of the OS) of 59% despite reaching its end of life in July 2015", "locator": "Section 'What else will motivate organizations to upgrade?', and chart 'Windows Server 2003 Penetration Rate Since EOL'", "derived": false, "formula": null, "headline": false, "series": "spiceworks-windows-server-2003-penetration", "history": [], "notes": "Series (Spiceworks network data, same measure): 60% July 2015, 59% November 2015, 53% June 2016 (eol-history-2003-2008 reusable id spiceworks-2016-07-server-2003-at-least-one-instance-53pct), 52% September 2016; in install-base-audits-series-spiceworks-windows-server-2003-penetration.csv. The reusable 61% (spiceworks-2015-03-server-2003-at-least-one-instance-61pct) is a survey answer from January 2015, a different measure. Network World (2 December 2015) restated this as '59 percent of businesses still have at least one instance'. Regional: North America 62%, EMEA 58% (chart). Penetration rate = share of organisations with at least one instance of the OS (Spiceworks' definition in the post), not a share of servers; the rates add to more than 100% because organisations run several versions. Spiceworks' own publication, live on the migrated community site (old URL community.spiceworks.com/topic/1289032-... redirects here; a Wayback snapshot of 12 August 2020 also exists). Spiceworks network data: anonymised, aggregated inventory scans from organisations using Spiceworks' free IT-management software (mostly small and mid-sized businesses, mostly on-premises machines); vendor telemetry, not all servers.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-11-windows-server-2003-penetration-59pct", "citation_text": "59% of organisations in Spiceworks' network still ran at least one Windows Server 2003 instance in November 2015, four months after its 14 July 2015 end of support, down one point since July (Spiceworks, 2015). Source: Spiceworks, \"Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)\" (https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-11-windows-server-2003-penetration-59pct." }, { "id": "spiceworks-2015-07-windows-server-2003-penetration-60pct", "family": "install-base-audits", "statement": "60% of organisations in Spiceworks' network ran at least one Windows Server 2003 instance in July 2015, the month its extended support ended, with 63% in North America and 60% in EMEA (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 60, "unit": "% of organisations with at least one instance (penetration rate)", "display_value": "60%", "display_label": "", "display_hook": null, "row_label": "July 2015", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly small and mid-sized businesses)", "period": "2015-07", "population": "Organisations in the Spiceworks network (anonymised, aggregated usage data from Spiceworks' free inventory software), share with at least one instance of each server OS ('penetration rate')", "sample_n": null, "publisher": "Spiceworks", "source_title": "Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)", "source_url": "https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-12-02", "accessed_at": "2026-10-14", "quote": "Windows Server 2003 Penetration Rate Since EOL November 2015 ... July 2015 ... Global 60% ... NA 63% ... EMEA 60%", "locator": "Chart image 'Windows Server 2003 Penetration Rate Since EOL, November 2015' (saved as raw png), July 2015 bars", "derived": false, "formula": null, "headline": false, "series": "spiceworks-windows-server-2003-penetration", "history": [], "notes": "Chart values read from the image (July 2015 and November 2015 bars: Global 60/59, NA 63/62, EMEA 60/58). Penetration rate = share of organisations with at least one instance of the OS (Spiceworks' definition in the post), not a share of servers; the rates add to more than 100% because organisations run several versions. Spiceworks' own publication, live on the migrated community site (old URL community.spiceworks.com/topic/1289032-... redirects here; a Wayback snapshot of 12 August 2020 also exists). Spiceworks network data: anonymised, aggregated inventory scans from organisations using Spiceworks' free IT-management software (mostly small and mid-sized businesses, mostly on-premises machines); vendor telemetry, not all servers.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-07-windows-server-2003-penetration-60pct", "citation_text": "60% of organisations in Spiceworks' network ran at least one Windows Server 2003 instance in July 2015, the month its extended support ended, with 63% in North America and 60% in EMEA (Spiceworks, 2015). Source: Spiceworks, \"Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)\" (https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-07-windows-server-2003-penetration-60pct." }, { "id": "spiceworks-2015-11-windows-server-2016-adoption-plans-17pct-within-first-year", "family": "install-base-audits", "statement": "17% of about 300 IT professionals surveyed by Spiceworks in November 2015 planned to adopt Windows Server 2016 within its first year, while 23% had no plans to adopt it and 20% did not know (Spiceworks, 2015).", "short_statement": null, "short_refs": null, "value": 17, "unit": "% of IT professionals surveyed (adoption plans)", "display_value": "17%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Spiceworks Community members)", "period": "2015-11", "population": "About 300 IT professionals in the Spiceworks Community at small, medium and large businesses, asked about their server OS plans for 2016", "sample_n": 300, "publisher": "Spiceworks", "source_title": "Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)", "source_url": "https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-12-02", "accessed_at": "2026-10-14", "quote": "Most IT pros don't plan to adopt Windows Server 2016 soon after its release – 17% of survey respondents plan to use the new OS within the first year.", "locator": "Section 'When will organizations adopt Windows Server 2016?'; pie chart 'Windows Server 2016 Adoption Plans, November 2015'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Chart split: 4% as soon as available, 13% within the first year, 27% within 1-2 years, 13% within 2-3 years, 23% no plans to adopt, 20% don't know (the text: 44% within 2 years, 57% within 3 years, 43% no plans or don't know). A vendor-run poll of its community, about 300 respondents. Comparator for the next-versions-adoption family's Windows Server 2025 adoption figures.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-11-windows-server-2016-adoption-plans-17pct-within-first-year", "citation_text": "17% of about 300 IT professionals surveyed by Spiceworks in November 2015 planned to adopt Windows Server 2016 within its first year, while 23% had no plans to adopt it and 20% did not know (Spiceworks, 2015). Source: Spiceworks, \"Survey: When will IT departments adopt Windows Server 2016? (Spiceworks Community, Peter Tsai, 2 December 2015)\" (https://community.spiceworks.com/t/survey-when-will-it-departments-adopt-windows-server-2016/450938). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-11-windows-server-2016-adoption-plans-17pct-within-first-year." }, { "id": "networkworld-2015-12-02-spiceworks-windows-server-2012-running-in-12pct-of-businesses-after-one-year", "family": "install-base-audits", "statement": "12% of businesses were running Windows Server 2012 a year after its September 2012 release, according to Spiceworks data reported by Network World in December 2015 (Spiceworks via Network World, 2015).", "short_statement": null, "short_refs": null, "value": 12, "unit": "% of businesses running the version one year after release", "display_value": "12%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Spiceworks network)", "period": "2013-09", "population": "Businesses in Spiceworks' data a year after Windows Server 2012's release (measure as reported by Network World; Spiceworks' own post does not give it)", "sample_n": null, "publisher": "Network World (reporting Spiceworks data)", "source_title": "Windows Server 2016 adoption will be a marathon, not a sprint (Network World, Blair Frank, 2 December 2015)", "source_url": "https://www.networkworld.com/article/945886/windows-server-2016-adoption-will-be-a-marathon-not-a-sprint.html", "source_type": "secondary", "source_access": "open", "published_at": "2015-12-02", "accessed_at": "2026-10-14", "quote": "the software's adoption in its first year will actually be more aggressive than that of Windows Server 2012, which after a year was running in 12 percent of businesses.", "locator": "Third paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Not in Spiceworks' own post (text or charts), so trade press is the document. Compare 48% of organisations with at least one Server 2012 instance by November 2015 (spiceworks-2015-11-windows-server-2012-penetration-48pct).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2015-12-02-spiceworks-windows-server-2012-running-in-12pct-of-businesses-after-one-year", "citation_text": "12% of businesses were running Windows Server 2012 a year after its September 2012 release, according to Spiceworks data reported by Network World in December 2015 (Spiceworks via Network World, 2015). Source: Network World (reporting Spiceworks data), \"Windows Server 2016 adoption will be a marathon, not a sprint (Network World, Blair Frank, 2 December 2015)\" (https://www.networkworld.com/article/945886/windows-server-2016-adoption-will-be-a-marathon-not-a-sprint.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2015-12-02-spiceworks-windows-server-2012-running-in-12pct-of-businesses-after-one-year." }, { "id": "spiceworks-2016-09-windows-server-2003-penetration-52pct", "family": "install-base-audits", "statement": "52% of organisations in Spiceworks' network were still running Windows Server 2003 in September 2016, 14 months after its July 2015 end of support (Spiceworks, 2016).", "short_statement": null, "short_refs": null, "value": 52, "unit": "% of organisations with at least one instance (penetration rate)", "display_value": "52%", "display_label": "", "display_hook": null, "row_label": "September 2016", "publisher_short": null, "geography": "Worldwide (Spiceworks network, mostly small and mid-sized businesses)", "period": "2016-09", "population": "Organisations in the Spiceworks network (anonymised, aggregated usage data)", "sample_n": null, "publisher": "Spiceworks", "source_title": "IT in 2017: Tech adoption and budget predictions (Spiceworks Community, 22 September 2016)", "source_url": "https://community.spiceworks.com/t/it-in-2017-tech-adoption-and-budget-predictions/970238", "source_type": "manufacturer", "source_access": "open", "published_at": "2016-09-22", "accessed_at": "2026-10-14", "quote": "We also know that 52% of organizations in Spiceworks are stilling running Windows Server 2003, an OS that reached its EOS in July 2015.", "locator": "Prediction 5, 'Organizations will be slow to upgrade their EOL OSes/software'", "derived": false, "formula": null, "headline": false, "series": "spiceworks-windows-server-2003-penetration", "history": [], "notes": "Same post: '56% of organizations are still running at least once instance of Windows XP'. Series in install-base-audits-series-spiceworks-windows-server-2003-penetration.csv. Spiceworks network data: anonymised, aggregated inventory scans from organisations using Spiceworks' free IT-management software (mostly small and mid-sized businesses, mostly on-premises machines); vendor telemetry, not all servers.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-09-windows-server-2003-penetration-52pct", "citation_text": "52% of organisations in Spiceworks' network were still running Windows Server 2003 in September 2016, 14 months after its July 2015 end of support (Spiceworks, 2016). Source: Spiceworks, \"IT in 2017: Tech adoption and budget predictions (Spiceworks Community, 22 September 2016)\" (https://community.spiceworks.com/t/it-in-2017-tech-adoption-and-budget-predictions/970238). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2016-09-windows-server-2003-penetration-52pct." }, { "id": "idc-2011-02-28-windows-servers-42-1pct-of-server-factory-revenue-4q10", "family": "install-base-audits", "statement": "42.1% of worldwide server factory revenue in the fourth quarter of 2010 came from Windows servers ($6.3 billion), whose 1.5 million shipments were the highest quarterly total IDC had recorded for Windows (IDC, 2011).", "short_statement": "Windows servers took **42.1%** of worldwide server revenue at the end of 2010, the last such share IDC published openly.", "short_refs": null, "value": 42.1, "unit": "% of worldwide server factory revenue, 4Q10", "display_value": "42.1%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2010-Q4", "population": "Worldwide server factory revenue (new server hardware sold in the quarter) in IDC's Worldwide Quarterly Server Tracker, by operating system of the server", "sample_n": null, "publisher": "IDC", "source_title": "Worldwide Server Market Accelerates Sharply in Fourth Quarter as Demand for Heterogeneous Platforms Leads the Way, According to IDC (IDC press release prUS22716111, 28 February 2011)", "source_url": "https://www.idc.com/getdoc.jsp?containerId=prUS22716111", "source_type": "secondary", "source_access": "open", "published_at": "2011-02-28", "accessed_at": "2026-10-14", "quote": "Quarterly revenue of $6.3 billion for Windows servers represented 42.1% of overall quarterly factory revenue. The 1.5 million server shipments are the highest quarterly total ever reported for Windows servers.", "locator": "Paragraph on Microsoft Windows server demand; snapshot http://web.archive.org/web/20120530014059/http://www.idc.com/getdoc.jsp?containerId=prUS22716111", "derived": false, "formula": null, "headline": false, "series": "idc-server-revenue-share-by-os", "history": [], "notes": "HISTORY ONLY: IDC's own press release (Wayback snapshot of idc.com, 30 May 2012). These are this family's two analyst figures. They measure new hardware revenue by server OS in one quarter, not the installed base. IDC's press releases after about 2012 no longer give an operating-system split (none found for 2013-2026 on 2026-10-14; Business Wire's copy of this release returns 403), and no Gartner newsroom release with a server OS share was found.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2011-02-28-windows-servers-42-1pct-of-server-factory-revenue-4q10", "citation_text": "42.1% of worldwide server factory revenue in the fourth quarter of 2010 came from Windows servers ($6.3 billion), whose 1.5 million shipments were the highest quarterly total IDC had recorded for Windows (IDC, 2011). Source: IDC, \"Worldwide Server Market Accelerates Sharply in Fourth Quarter as Demand for Heterogeneous Platforms Leads the Way, According to IDC (IDC press release prUS22716111, 28 February 2011)\" (https://www.idc.com/getdoc.jsp?containerId=prUS22716111). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2011-02-28-windows-servers-42-1pct-of-server-factory-revenue-4q10." }, { "id": "idc-2011-02-28-linux-servers-17pct-of-server-revenue-4q10", "family": "install-base-audits", "statement": "17.0% of worldwide server revenue in the fourth quarter of 2010 came from Linux servers ($2.5 billion), up 1.8 points on a year earlier, against 42.1% for Windows servers (IDC, 2011).", "short_statement": null, "short_refs": null, "value": 17, "unit": "% of worldwide server factory revenue, 4Q10", "display_value": "17.0%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2010-Q4", "population": "Worldwide server factory revenue (new server hardware sold in the quarter) in IDC's Worldwide Quarterly Server Tracker, by operating system of the server", "sample_n": null, "publisher": "IDC", "source_title": "Worldwide Server Market Accelerates Sharply in Fourth Quarter as Demand for Heterogeneous Platforms Leads the Way, According to IDC (IDC press release prUS22716111, 28 February 2011)", "source_url": "https://www.idc.com/getdoc.jsp?containerId=prUS22716111", "source_type": "secondary", "source_access": "open", "published_at": "2011-02-28", "accessed_at": "2026-10-14", "quote": "Linux server demand also improved in 4Q10 with revenue growing 29.3% to $2.5 billion when compared with the fourth quarter of 2009. Linux servers now represent 17.0% of all server revenue, up 1.8 points over 4Q09.", "locator": "Paragraph on Linux server demand; snapshot http://web.archive.org/web/20120530014059/http://www.idc.com/getdoc.jsp?containerId=prUS22716111", "derived": false, "formula": null, "headline": false, "series": "idc-server-revenue-share-by-os", "history": [], "notes": "HISTORY ONLY: IDC's own press release (Wayback snapshot of idc.com, 30 May 2012). These are this family's two analyst figures. They measure new hardware revenue by server OS in one quarter, not the installed base. IDC's press releases after about 2012 no longer give an operating-system split (none found for 2013-2026 on 2026-10-14; Business Wire's copy of this release returns 403), and no Gartner newsroom release with a server OS share was found.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2011-02-28-linux-servers-17pct-of-server-revenue-4q10", "citation_text": "17.0% of worldwide server revenue in the fourth quarter of 2010 came from Linux servers ($2.5 billion), up 1.8 points on a year earlier, against 42.1% for Windows servers (IDC, 2011). Source: IDC, \"Worldwide Server Market Accelerates Sharply in Fourth Quarter as Demand for Heterogeneous Platforms Leads the Way, According to IDC (IDC press release prUS22716111, 28 February 2011)\" (https://www.idc.com/getdoc.jsp?containerId=prUS22716111). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2011-02-28-linux-servers-17pct-of-server-revenue-4q10." }, { "id": "smartprofile-2017-08-25-windows-server-2012-used-by-34pct-of-dutch-businesses-50-plus-employees", "family": "restatements-and-aggregators", "statement": "34% of Dutch businesses with 50 or more employees said they used Windows Server 2012 in April 2017, about level with Windows Server 2008, in Smart Profile's analysis of about 2,000 interviews (Smart Profile, 2017).", "short_statement": "**34%** of Dutch firms with 50 or more staff used Windows Server 2012 in 2017; Wikipedia made it 35% of servers.", "short_refs": [ "wikipedia-windows-server-2012-restates-smart-profile-34pct-dutch-businesses-as-35pct-of-servers" ], "value": 34, "unit": "% of Dutch businesses with 50+ employees using the version (penetration, not share of servers)", "display_value": "34%", "display_label": "Smart Profile, about 2,000 interviews, Netherlands, 2017", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Netherlands", "period": "2017-04", "population": "Business locations in the Netherlands with 50 or more employees", "sample_n": 2000, "publisher": "Smart Profile", "source_title": "Windows Server 2012 approximately equal to Windows Server 2008 (Smart Profile analytics paper, 25 August 2017)", "source_url": "https://smartprofile.io/analytics-papers/windows-server-2012-approximately-equal-windows-server-2008/", "source_type": "secondary", "source_access": "open", "published_at": "2017-08-25", "accessed_at": "2026-10-14", "quote": "we are still seeing a rising line in the percentage of businesses that indicate they use this version to the current 34 percent, four and a half years after its introduction", "locator": "Third paragraph; chart 'Development penetration Server OS' (Computer Profile, May 2017), point 2017-April", "derived": false, "formula": null, "headline": false, "series": "smartprofile-netherlands-server-os-penetration", "history": [], "notes": "The source behind Wikipedia's '35% of servers' (trail record wikipedia-windows-server-2012-restates-smart-profile-34pct-dutch-businesses-as-35pct-of-servers). Measures the share of business sites using a version (multi-response), not a share of servers; Dutch market only; about 2,000 interviews. Same paper: Windows Server 2008 peaked at about 55% in 2013; Linux at about 12% of businesses. Chart image saved as raw smartprofile-2017-development-server-os-chart.png (2017-April: 2012 about 34%, 2008 about 35%; x-axis mislabels 2012 as '2016-April'). Overlap: install-base-audits may record this figure as history; dedupe at merge (that family saved smartprofile-2017-08-25-windows-server-2012-approximately-equal-2008.html).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#smartprofile-2017-08-25-windows-server-2012-used-by-34pct-of-dutch-businesses-50-plus-employees", "citation_text": "34% of Dutch businesses with 50 or more employees said they used Windows Server 2012 in April 2017, about level with Windows Server 2008, in Smart Profile's analysis of about 2,000 interviews (Smart Profile, 2017). Source: Smart Profile, \"Windows Server 2012 approximately equal to Windows Server 2008 (Smart Profile analytics paper, 25 August 2017)\" (https://smartprofile.io/analytics-papers/windows-server-2012-approximately-equal-windows-server-2008/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#smartprofile-2017-08-25-windows-server-2012-used-by-34pct-of-dutch-businesses-50-plus-employees." }, { "id": "smartprofile-2017-08-25-windows-server-2008-peak-penetration-55pct-of-dutch-businesses-in-2013", "family": "install-base-audits", "statement": "55% of Dutch businesses with 50 or more employees used Windows Server 2008 at its 2013 peak, five years after its release, the pattern Smart Profile expected Windows Server 2012 and 2016 to follow (Smart Profile, 2017).", "short_statement": null, "short_refs": null, "value": 55, "unit": "% of Dutch businesses with 50+ employees using the version (penetration)", "display_value": "55%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Netherlands", "period": "2013", "population": "Dutch businesses with 50 or more employees, in Smart Profile's analysis of about 2,000 interviews on server operating system use (a market-intelligence vendor's survey)", "sample_n": 2000, "publisher": "Smart Profile", "source_title": "Windows Server 2012 approximately equal to Windows Server 2008 (Smart Profile analytics paper, 25 August 2017)", "source_url": "https://www.smartprofile.io/analytics-papers/windows-server-2012-approximately-equal-windows-server-2008/", "source_type": "secondary", "source_access": "open", "published_at": "2017-08-25", "accessed_at": "2026-10-14", "quote": "In 2013 \"Windows Server 2008\" was in use by approximately 55 percent of the aforementioned businesses with 50 or more employees.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "smartprofile-netherlands-server-os-penetration", "history": [], "notes": "This is the source behind Wikipedia's 'As of April 2017, 35% of servers were running Windows Server 2012' (Windows Server 2012 article, reference 7). The paper measures the share of Dutch businesses (50+ employees) that use a version, not a share of servers, gives 34% not 35%, and names no month (page datePublished 2017-08-25). History only; not a current figure.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#smartprofile-2017-08-25-windows-server-2008-peak-penetration-55pct-of-dutch-businesses-in-2013", "citation_text": "55% of Dutch businesses with 50 or more employees used Windows Server 2008 at its 2013 peak, five years after its release, the pattern Smart Profile expected Windows Server 2012 and 2016 to follow (Smart Profile, 2017). Source: Smart Profile, \"Windows Server 2012 approximately equal to Windows Server 2008 (Smart Profile analytics paper, 25 August 2017)\" (https://www.smartprofile.io/analytics-papers/windows-server-2012-approximately-equal-windows-server-2008/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#smartprofile-2017-08-25-windows-server-2008-peak-penetration-55pct-of-dutch-businesses-in-2013." }, { "id": "smartprofile-2017-08-25-windows-server-2016-about-2-5pct-of-dutch-businesses", "family": "install-base-audits", "statement": "About 2.5% of Dutch businesses with 50 or more employees used Windows Server 2016 by August 2017, ten months after its October 2016 release (Smart Profile, 2017).", "short_statement": null, "short_refs": null, "value": 2.5, "unit": "% of Dutch businesses with 50+ employees using the version (penetration)", "display_value": "about 2.5%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Netherlands", "period": "2017-08", "population": "Dutch businesses with 50 or more employees, in Smart Profile's analysis of about 2,000 interviews on server operating system use (a market-intelligence vendor's survey)", "sample_n": 2000, "publisher": "Smart Profile", "source_title": "Windows Server 2012 approximately equal to Windows Server 2008 (Smart Profile analytics paper, 25 August 2017)", "source_url": "https://www.smartprofile.io/analytics-papers/windows-server-2012-approximately-equal-windows-server-2008/", "source_type": "secondary", "source_access": "open", "published_at": "2017-08-25", "accessed_at": "2026-10-14", "quote": "Since then, we can see that this OS has fallen by a couple of percentage points (about 2.5%) on the Dutch business market among businesses with 50 or more employees.", "locator": "First paragraph", "derived": false, "formula": null, "headline": false, "series": "smartprofile-netherlands-server-os-penetration", "history": [], "notes": "The English page's wording ('has fallen by a couple of percentage points (about 2.5%)') reads as a translation artefact (a version released ten months earlier cannot have fallen); read as Server 2016 reaching about 2.5% penetration. The Dutch original was not fetched. Recorded as the stated figure with that caveat. This is the source behind Wikipedia's 'As of April 2017, 35% of servers were running Windows Server 2012' (Windows Server 2012 article, reference 7). The paper measures the share of Dutch businesses (50+ employees) that use a version, not a share of servers, gives 34% not 35%, and names no month (page datePublished 2017-08-25). History only; not a current figure.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#smartprofile-2017-08-25-windows-server-2016-about-2-5pct-of-dutch-businesses", "citation_text": "About 2.5% of Dutch businesses with 50 or more employees used Windows Server 2016 by August 2017, ten months after its October 2016 release (Smart Profile, 2017). Source: Smart Profile, \"Windows Server 2012 approximately equal to Windows Server 2008 (Smart Profile analytics paper, 25 August 2017)\" (https://www.smartprofile.io/analytics-papers/windows-server-2012-approximately-equal-windows-server-2008/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#smartprofile-2017-08-25-windows-server-2016-about-2-5pct-of-dutch-businesses." }, { "id": "smartprofile-2017-08-25-linux-server-used-by-12pct-of-dutch-businesses", "family": "install-base-audits", "statement": "Approximately 12% of Dutch businesses with 50 or more employees used a Linux server in 2017, a share that had hovered around 10% for years, with UNIX at about 1.5% and OS/400 at about 3% of locations (Smart Profile, 2017).", "short_statement": null, "short_refs": null, "value": 12, "unit": "% of Dutch businesses with 50+ employees using a Linux server (penetration)", "display_value": "about 12%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Netherlands", "period": "2017-08", "population": "Dutch businesses with 50 or more employees, in Smart Profile's analysis of about 2,000 interviews on server operating system use (a market-intelligence vendor's survey)", "sample_n": 2000, "publisher": "Smart Profile", "source_title": "Windows Server 2012 approximately equal to Windows Server 2008 (Smart Profile analytics paper, 25 August 2017)", "source_url": "https://www.smartprofile.io/analytics-papers/windows-server-2012-approximately-equal-windows-server-2008/", "source_type": "secondary", "source_access": "open", "published_at": "2017-08-25", "accessed_at": "2026-10-14", "quote": "Linux is the most common platform after Microsoft's server operating systems. Approximately 12 percent of businesses in the target group use a Linux server.", "locator": "Fifth paragraph", "derived": false, "formula": null, "headline": false, "series": "smartprofile-netherlands-server-os-penetration", "history": [], "notes": "This is the source behind Wikipedia's 'As of April 2017, 35% of servers were running Windows Server 2012' (Windows Server 2012 article, reference 7). The paper measures the share of Dutch businesses (50+ employees) that use a version, not a share of servers, gives 34% not 35%, and names no month (page datePublished 2017-08-25). History only; not a current figure.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#smartprofile-2017-08-25-linux-server-used-by-12pct-of-dutch-businesses", "citation_text": "Approximately 12% of Dutch businesses with 50 or more employees used a Linux server in 2017, a share that had hovered around 10% for years, with UNIX at about 1.5% and OS/400 at about 3% of locations (Smart Profile, 2017). Source: Smart Profile, \"Windows Server 2012 approximately equal to Windows Server 2008 (Smart Profile analytics paper, 25 August 2017)\" (https://www.smartprofile.io/analytics-papers/windows-server-2012-approximately-equal-windows-server-2008/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#smartprofile-2017-08-25-linux-server-used-by-12pct-of-dutch-businesses." }, { "id": "bitsight-groma-2026-10-14-windows-server-2012-observations-total-920444", "family": "install-base-audits", "statement": "920,444 observations of Microsoft Windows Server 2012 on the public-facing internet over the prior 30 days were shown by Bitsight's Groma explorer on 14 October 2026, the day after Server 2012's paid ESU ended (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 920444, "unit": "software observations (address, port and domain tuples) over the prior 30 days", "display_value": "920,444", "display_label": "Bitsight Groma explorer, as shown 14 October 2026 (observations, not unique servers)", "display_hook": null, "row_label": "Windows Server 2012", "publisher_short": null, "geography": "Worldwide", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Microsoft Windows Server 2012 Observation Footprint 920,444 Total Observations", "locator": "Page header, 'Total Observations' figure", "derived": false, "formula": null, "headline": false, "series": "bitsight-groma-windows-server-observations", "history": [], "notes": "Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-total-920444", "citation_text": "920,444 observations of Microsoft Windows Server 2012 on the public-facing internet over the prior 30 days were shown by Bitsight's Groma explorer on 14 October 2026, the day after Server 2012's paid ESU ended (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-total-920444." }, { "id": "bitsight-groma-2026-10-14-windows-server-2012-observations-us-239107", "family": "install-base-audits", "statement": "239,107 observations of Windows Server 2012 on the public-facing internet were located in the United States (26.09% of the 920,444 worldwide) in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 239107, "unit": "software observations (address, port and domain tuples) over the prior 30 days", "display_value": "239,107", "display_label": "", "display_hook": null, "row_label": "United States", "publisher_short": null, "geography": "United States", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Top 10 Identified Countries Country Observations Percentage ... US 239,107 26.09%", "locator": "Table 'Top 10 Identified Countries', row US", "derived": false, "formula": null, "headline": false, "series": "bitsight-groma-windows-server-2012-by-country", "history": [], "notes": "Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for. Full top-10 in install-base-audits-series-bitsight-groma-server-2012-by-country-2026-10-14.csv.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-us-239107", "citation_text": "239,107 observations of Windows Server 2012 on the public-facing internet were located in the United States (26.09% of the 920,444 worldwide) in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-us-239107." }, { "id": "bitsight-groma-2026-10-14-windows-server-2012-observations-china-134044", "family": "install-base-audits", "statement": "134,044 observations of Windows Server 2012 on the public-facing internet were located in China (14.63% of the 920,444 worldwide) in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 134044, "unit": "software observations (address, port and domain tuples) over the prior 30 days", "display_value": "134,044", "display_label": "", "display_hook": null, "row_label": "China", "publisher_short": null, "geography": "China", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Top 10 Identified Countries Country Observations Percentage ... CN 134,044 14.63%", "locator": "Table 'Top 10 Identified Countries', row CN", "derived": false, "formula": null, "headline": false, "series": "bitsight-groma-windows-server-2012-by-country", "history": [], "notes": "Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for. Full top-10 in install-base-audits-series-bitsight-groma-server-2012-by-country-2026-10-14.csv.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-china-134044", "citation_text": "134,044 observations of Windows Server 2012 on the public-facing internet were located in China (14.63% of the 920,444 worldwide) in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-china-134044." }, { "id": "bitsight-groma-2026-10-14-windows-server-2012-observations-hong-kong-36097", "family": "install-base-audits", "statement": "36,097 observations of Windows Server 2012 on the public-facing internet were located in Hong Kong (3.94% of the 920,444 worldwide) in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 36097, "unit": "software observations (address, port and domain tuples) over the prior 30 days", "display_value": "36,097", "display_label": "", "display_hook": null, "row_label": "Hong Kong", "publisher_short": null, "geography": "Hong Kong", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Top 10 Identified Countries Country Observations Percentage ... HK 36,097 3.94%", "locator": "Table 'Top 10 Identified Countries', row HK", "derived": false, "formula": null, "headline": false, "series": "bitsight-groma-windows-server-2012-by-country", "history": [], "notes": "Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for. Full top-10 in install-base-audits-series-bitsight-groma-server-2012-by-country-2026-10-14.csv.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-hong-kong-36097", "citation_text": "36,097 observations of Windows Server 2012 on the public-facing internet were located in Hong Kong (3.94% of the 920,444 worldwide) in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-hong-kong-36097." }, { "id": "bitsight-groma-2026-10-14-windows-server-2012-observations-germany-35873", "family": "install-base-audits", "statement": "35,873 observations of Windows Server 2012 on the public-facing internet were located in Germany (3.91% of the 920,444 worldwide) in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 35873, "unit": "software observations (address, port and domain tuples) over the prior 30 days", "display_value": "35,873", "display_label": "", "display_hook": null, "row_label": "Germany", "publisher_short": null, "geography": "Germany", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Top 10 Identified Countries Country Observations Percentage ... DE 35,873 3.91%", "locator": "Table 'Top 10 Identified Countries', row DE", "derived": false, "formula": null, "headline": false, "series": "bitsight-groma-windows-server-2012-by-country", "history": [], "notes": "Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for. Full top-10 in install-base-audits-series-bitsight-groma-server-2012-by-country-2026-10-14.csv.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-germany-35873", "citation_text": "35,873 observations of Windows Server 2012 on the public-facing internet were located in Germany (3.91% of the 920,444 worldwide) in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-germany-35873." }, { "id": "bitsight-groma-2026-10-14-windows-server-2012-observations-uk-31760", "family": "install-base-audits", "statement": "31,760 observations of Windows Server 2012 on the public-facing internet were located in the United Kingdom (3.47% of the 920,444 worldwide) in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 31760, "unit": "software observations (address, port and domain tuples) over the prior 30 days", "display_value": "31,760", "display_label": "", "display_hook": null, "row_label": "United Kingdom", "publisher_short": null, "geography": "United Kingdom", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Top 10 Identified Countries Country Observations Percentage ... GB 31,760 3.47%", "locator": "Table 'Top 10 Identified Countries', row GB", "derived": false, "formula": null, "headline": false, "series": "bitsight-groma-windows-server-2012-by-country", "history": [], "notes": "Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for. Full top-10 in install-base-audits-series-bitsight-groma-server-2012-by-country-2026-10-14.csv.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-uk-31760", "citation_text": "31,760 observations of Windows Server 2012 on the public-facing internet were located in the United Kingdom (3.47% of the 920,444 worldwide) in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-uk-31760." }, { "id": "bitsight-groma-2026-10-14-windows-server-2012-technology-industry-share-65-49pct", "family": "install-base-audits", "statement": "65.5% of Bitsight's 920,444 Windows Server 2012 internet observations were attributed to the Technology industry and 23.5% to Telecommunications on 14 October 2026, which Bitsight says over-represents service providers that own end-user infrastructure (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 65.49, "unit": "% of Windows Server 2012 observations by attributed industry", "display_value": "65.5%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. ... Technology 361,409 65.49% Telecommunications 129,530 23.47%", "locator": "Table 'Top 10 Identified Industries', rows Technology and Telecommunications, and its footnote", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-technology-industry-share-65-49pct", "citation_text": "65.5% of Bitsight's 920,444 Windows Server 2012 internet observations were attributed to the Technology industry and 23.5% to Telecommunications on 14 October 2026, which Bitsight says over-represents service providers that own end-user infrastructure (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-technology-industry-share-65-49pct." }, { "id": "bitsight-groma-2026-10-14-windows-server-2012-version-unspecified-920380-of-920444", "family": "install-base-audits", "statement": "920,380 of the 920,444 Windows Server 2012 observations in Bitsight's Groma explorer on 14 October 2026 carried no sub-version (60 were tagged 'r2' and 4 '6.2.9200'), so the count does not separate Windows Server 2012 from 2012 R2 (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 920380, "unit": "observations with version 'unspecified'", "display_value": "920,380", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 Version Details 3 Versions Found ... unspecified 920,380 r2 60 6.2.9200 4", "locator": "Table 'Windows Server 2012 Version Details'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Method caveat record for the Bitsight counts. Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-version-unspecified-920380-of-920444", "citation_text": "920,380 of the 920,444 Windows Server 2012 observations in Bitsight's Groma explorer on 14 October 2026 carried no sub-version (60 were tagged 'r2' and 4 '6.2.9200'), so the count does not separate Windows Server 2012 from 2012 R2 (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-version-unspecified-920380-of-920444." }, { "id": "bitsight-groma-2026-10-14-windows-server-2008-observations-total-469300", "family": "install-base-audits", "statement": "469,300 observations of Microsoft Windows Server 2008 on the public-facing internet over the prior 30 days were shown by Bitsight's Groma explorer on 14 October 2026, more than six years after its January 2020 end of extended support (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 469300, "unit": "software observations (address, port and domain tuples) over the prior 30 days", "display_value": "469,300", "display_label": "Bitsight Groma explorer, as shown 14 October 2026 (observations, not unique servers)", "display_hook": null, "row_label": "Windows Server 2008", "publisher_short": null, "geography": "Worldwide", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2008 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2008", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Microsoft Windows Server 2008 Observation Footprint 469,300 Total Observations", "locator": "Page header, 'Total Observations' figure", "derived": false, "formula": null, "headline": false, "series": "bitsight-groma-windows-server-observations", "history": [], "notes": "Version details: 469,258 'unspecified', 27 'r2', 15 'sp2'. Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2008-observations-total-469300", "citation_text": "469,300 observations of Microsoft Windows Server 2008 on the public-facing internet over the prior 30 days were shown by Bitsight's Groma explorer on 14 October 2026, more than six years after its January 2020 end of extended support (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2008 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2008). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2008-observations-total-469300." }, { "id": "bitsight-groma-2026-10-14-windows-server-2008-observations-china-129747", "family": "install-base-audits", "statement": "129,747 observations of Windows Server 2008 (27.7% of the 469,300 worldwide) were located in China and 107,746 (23.0%) in the United States in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 129747, "unit": "software observations (address, port and domain tuples) over the prior 30 days", "display_value": "129,747", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "China", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2008 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2008", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Top 10 Identified Countries Country Observations Percentage CN 129,747 27.67% US 107,746 22.98%", "locator": "Table 'Top 10 Identified Countries', rows CN and US", "derived": false, "formula": null, "headline": false, "series": "bitsight-groma-windows-server-2008-by-country", "history": [], "notes": "China leads for Server 2008 where the US leads for Server 2012 and 2016. Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2008-observations-china-129747", "citation_text": "129,747 observations of Windows Server 2008 (27.7% of the 469,300 worldwide) were located in China and 107,746 (23.0%) in the United States in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2008 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2008). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2008-observations-china-129747." }, { "id": "bitsight-groma-2026-10-14-windows-server-2016-observations-total-81580", "family": "install-base-audits", "statement": "81,580 observations of Microsoft Windows Server 2016 on the public-facing internet over the prior 30 days were shown by Bitsight's Groma explorer on 14 October 2026, three months before its 12 January 2027 end of extended support (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 81580, "unit": "software observations (address, port and domain tuples) over the prior 30 days", "display_value": "81,580", "display_label": "", "display_hook": null, "row_label": "Windows Server 2016", "publisher_short": null, "geography": "Worldwide", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2016 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2016", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Microsoft Windows Server 2016 Observation Footprint 81,580 Total Observations", "locator": "Page header, 'Total Observations' figure", "derived": false, "formula": null, "headline": false, "series": "bitsight-groma-windows-server-observations", "history": [], "notes": "CONTRADICTION with install-base audits: Bitsight shows 11 times more Server 2012 than Server 2016 observations while Lansweeper (via The Register, March 2026) has 2016 on 20.3% of monitored servers. Groma identifies versions from exposed banners and fingerprints, which newer servers expose less; its counts measure identifiable exposure, not the install base. Top countries: US 19,528 (24.03%), DE 8,271 (10.18%), FR 3,686, BR 3,355, RU 3,215, GB 3,155. Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2016-observations-total-81580", "citation_text": "81,580 observations of Microsoft Windows Server 2016 on the public-facing internet over the prior 30 days were shown by Bitsight's Groma explorer on 14 October 2026, three months before its 12 January 2027 end of extended support (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2016 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2016). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2016-observations-total-81580." }, { "id": "bitsight-groma-2026-10-14-windows-server-2016-observations-us-19528", "family": "install-base-audits", "statement": "19,528 observations of Windows Server 2016 (24.0% of the 81,580 worldwide) were located in the United States and 8,271 (10.2%) in Germany in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 19528, "unit": "software observations (address, port and domain tuples) over the prior 30 days", "display_value": "19,528", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United States", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2016 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2016", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Top 10 Identified Countries Country Observations Percentage US 19,528 24.03% DE 8,271 10.18%", "locator": "Table 'Top 10 Identified Countries', rows US and DE", "derived": false, "formula": null, "headline": false, "series": "bitsight-groma-windows-server-2016-by-country", "history": [], "notes": "Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2016-observations-us-19528", "citation_text": "19,528 observations of Windows Server 2016 (24.0% of the 81,580 worldwide) were located in the United States and 8,271 (10.2%) in Germany in Bitsight's Groma explorer as shown on 14 October 2026 (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2016 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2016). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2016-observations-us-19528." }, { "id": "bitsight-groma-2026-10-14-windows-server-2019-observations-total-5607", "family": "install-base-audits", "statement": "5,607 observations of Microsoft Windows Server 2019 on the public-facing internet over the prior 30 days were shown by Bitsight's Groma explorer on 14 October 2026, against 920,444 for Windows Server 2012 (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 5607, "unit": "software observations (address, port and domain tuples) over the prior 30 days", "display_value": "5,607", "display_label": "", "display_hook": null, "row_label": "Windows Server 2019", "publisher_short": null, "geography": "Worldwide", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2019 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2019", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Microsoft Windows Server 2019 Observation Footprint 5,607 Total Observations", "locator": "Page header, 'Total Observations' figure", "derived": false, "formula": null, "headline": false, "series": "bitsight-groma-windows-server-observations", "history": [], "notes": "Method caveat: the tiny counts for 2019 (5,607) and 2022 (140) against 920,444 for 2012 show Groma's version detection favours older banner-identifiable versions; do not chart these as a version mix. Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2019-observations-total-5607", "citation_text": "5,607 observations of Microsoft Windows Server 2019 on the public-facing internet over the prior 30 days were shown by Bitsight's Groma explorer on 14 October 2026, against 920,444 for Windows Server 2012 (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2019 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2019). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2019-observations-total-5607." }, { "id": "bitsight-groma-2026-10-14-windows-server-2022-observations-total-140", "family": "install-base-audits", "statement": "140 observations of Microsoft Windows Server 2022 on the public-facing internet over the prior 30 days were shown by Bitsight's Groma explorer on 14 October 2026, 94 of them in the United States (Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 140, "unit": "software observations (address, port and domain tuples) over the prior 30 days", "display_value": "140", "display_label": "", "display_hook": null, "row_label": "Windows Server 2022", "publisher_short": null, "geography": "Worldwide", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2022 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2022", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Microsoft Windows Server 2022 Observation Footprint 140 Total Observations ... US 94 67.14%", "locator": "Page header and 'Top 10 Identified Countries' row US", "derived": false, "formula": null, "headline": false, "series": "bitsight-groma-windows-server-observations", "history": [], "notes": "Method caveat as for the 2019 record; a Windows Server 2025 page was not found (the generic /microsoft/windowsserver URL returns Page Not Found). Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2022-observations-total-140", "citation_text": "140 observations of Microsoft Windows Server 2022 on the public-facing internet over the prior 30 days were shown by Bitsight's Groma explorer on 14 October 2026, 94 of them in the United States (Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2022 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2022). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2022-observations-total-140." }, { "id": "bitsight-groma-2026-10-14-windows-server-2012-observations-11-3-times-windows-server-2016-derived", "family": "install-base-audits", "statement": "11.3 times as many internet observations of Windows Server 2012 (920,444) as of Windows Server 2016 (81,580) were shown by Bitsight's Groma explorer on 14 October 2026 (derived from Bitsight, 2026).", "short_statement": null, "short_refs": null, "value": 11.28, "unit": "ratio of Windows Server 2012 to Windows Server 2016 observations", "display_value": "11.3x", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-10-14", "population": "Software observations on the public-facing internet by Bitsight's Groma scanning engine over the prior 30 days, each identified by an address, port and domain name (so one host with several domains or ports counts more than once); shown on 2026-10-14", "sample_n": null, "publisher": "Bitsight", "source_title": "Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)", "source_url": "https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Microsoft Windows Server 2012 Observation Footprint 920,444 Total Observations", "locator": "Page headers of the Windows Server 2012 and Windows Server 2016 explorer pages", "derived": true, "formula": "920444 / 81580 = 11.28 (both totals as shown on 2026-10-14; the 2016 page is https://www.bitsight.com/groma-explorer/microsoft/windowsserver2016)", "headline": false, "series": "", "history": [], "notes": "Reads as exposure fingerprinting bias as much as install base (see the 2016 and 2019 records). Dated by access: the page carries no publication date, says it is updated daily and covers the prior 30 days. Observations are address+port+domain tuples, not unique hosts or installations; Bitsight notes service providers are over-represented (Technology 65.49% and Telecommunications 23.47% of Server 2012 observations). Version details show 920,380 of 920,444 Server 2012 observations as 'unspecified' (60 'r2', 4 '6.2.9200'): the explorer does not separate 2012 from 2012 R2. The discovery notes of 12 October 2026 saw 249,000-269,000 US observations; the page showed 239,107 on 2026-10-14, so counts move week to week. Exposure context belongs to the exposure-security family; recorded here as the install-base-by-country count the brief asked for.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-11-3-times-windows-server-2016-derived", "citation_text": "11.3 times as many internet observations of Windows Server 2012 (920,444) as of Windows Server 2016 (81,580) were shown by Bitsight's Groma explorer on 14 October 2026 (derived from Bitsight, 2026). Source: Bitsight, \"Microsoft Windows Server 2012 Observation Footprint (Bitsight Groma Explorer, as shown 14 October 2026)\" (https://www.bitsight.com/groma-explorer/microsoft/windowsserver2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bitsight-groma-2026-10-14-windows-server-2012-observations-11-3-times-windows-server-2016-derived." }, { "id": "w3techs-2026-10-14-windows-share-of-websites-8-1pct", "family": "install-base-audits", "statement": "8.1% of websites whose server operating system W3Techs could determine ran Windows on 14 October 2026, against 92.1% on Unix-type systems (W3Techs, 2026).", "short_statement": "**8.1%** of websites with a known server operating system ran Windows in October 2026, against 92.1% on Unix-type systems (W3Techs, 2026).", "short_refs": null, "value": 8.1, "unit": "% of websites with a known server OS (W3Techs top 10 million sites)", "display_value": "8.1%", "display_label": "W3Techs operating systems of websites, 14 October 2026", "display_hook": null, "row_label": "14 October 2026: Windows as server OS", "publisher_short": null, "geography": "Worldwide (web)", "period": "2026-10-14", "population": "Websites in W3Techs' survey of the top 10 million sites by Tranco ranking whose server operating system W3Techs can determine (Unix versus Windows only; a site may use more than one OS)", "sample_n": null, "publisher": "W3Techs (Q-Success)", "source_title": "Usage Statistics and Market Share of Operating Systems for Websites, October 2026 (W3Techs, 14 October 2026)", "source_url": "https://w3techs.com/technologies/overview/operating_system", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Unix is used by 92.1% of all the websites whose operating system we know. Unix 92.1% Windows 8.1% W3Techs.com, 14 October 2026", "locator": "Diagram 'Percentages of websites using various operating systems' and its date line", "derived": false, "formula": null, "headline": false, "series": "w3techs-windows-share-of-websites", "history": [], "notes": "W3Techs measures the operating system of the web server behind a website (top 10 million sites, Tranco), not servers in general or servers inside businesses; Windows here means any Windows, with no version split. Report updated daily; dated by the page's own date line.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2026-10-14-windows-share-of-websites-8-1pct", "citation_text": "8.1% of websites whose server operating system W3Techs could determine ran Windows on 14 October 2026, against 92.1% on Unix-type systems (W3Techs, 2026). Source: W3Techs (Q-Success), \"Usage Statistics and Market Share of Operating Systems for Websites, October 2026 (W3Techs, 14 October 2026)\" (https://w3techs.com/technologies/overview/operating_system). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2026-10-14-windows-share-of-websites-8-1pct." }, { "id": "w3techs-2026-10-14-unix-share-of-websites-92-1pct", "family": "install-base-audits", "statement": "92.1% of websites whose server operating system W3Techs could determine ran a Unix-type system (Linux, BSD and others) on 14 October 2026 (W3Techs, 2026).", "short_statement": null, "short_refs": null, "value": 92.1, "unit": "% of websites with a known server OS (W3Techs top 10 million sites)", "display_value": "92.1%", "display_label": "", "display_hook": null, "row_label": "14 October 2026: Unix-type systems as server OS", "publisher_short": null, "geography": "Worldwide (web)", "period": "2026-10-14", "population": "Websites in W3Techs' survey of the top 10 million sites by Tranco ranking whose server operating system W3Techs can determine (Unix versus Windows only; a site may use more than one OS)", "sample_n": null, "publisher": "W3Techs (Q-Success)", "source_title": "Usage Statistics and Market Share of Operating Systems for Websites, October 2026 (W3Techs, 14 October 2026)", "source_url": "https://w3techs.com/technologies/overview/operating_system", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Unix is used by 92.1% of all the websites whose operating system we know.", "locator": "Sentence 'How to read the diagram'", "derived": false, "formula": null, "headline": false, "series": "w3techs-unix-share-of-websites", "history": [], "notes": "W3Techs measures the operating system of the web server behind a website (top 10 million sites, Tranco), not servers in general or servers inside businesses; Windows here means any Windows, with no version split. Report updated daily; dated by the page's own date line.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2026-10-14-unix-share-of-websites-92-1pct", "citation_text": "92.1% of websites whose server operating system W3Techs could determine ran a Unix-type system (Linux, BSD and others) on 14 October 2026 (W3Techs, 2026). Source: W3Techs (Q-Success), \"Usage Statistics and Market Share of Operating Systems for Websites, October 2026 (W3Techs, 14 October 2026)\" (https://w3techs.com/technologies/overview/operating_system). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2026-10-14-unix-share-of-websites-92-1pct." }, { "id": "w3techs-2025-10-01-windows-share-of-websites-10-3pct", "family": "install-base-audits", "statement": "10.3% of websites with a known server operating system ran Windows on 1 October 2025, a year before the 8.1% of October 2026 (W3Techs, 2026).", "short_statement": null, "short_refs": null, "value": 10.3, "unit": "% of websites with a known server OS (W3Techs top 10 million sites)", "display_value": "10.3%", "display_label": "", "display_hook": null, "row_label": "1 October 2025: Windows as server OS", "publisher_short": null, "geography": "Worldwide (web)", "period": "2025-10-01", "population": "Websites in W3Techs' survey of the top 10 million sites by Tranco ranking whose server operating system W3Techs can determine (Unix versus Windows only; a site may use more than one OS)", "sample_n": null, "publisher": "W3Techs (Q-Success)", "source_title": "Historical trends in the usage statistics of operating systems for websites, October 2026 (W3Techs, monthly view)", "source_url": "https://w3techs.com/technologies/history_overview/operating_system", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "1 Oct 2025 ... Unix 89.9% ... Windows 10.3%", "locator": "Monthly history table, column '1 Oct 2025'", "derived": false, "formula": null, "headline": false, "series": "w3techs-windows-share-of-websites", "history": [], "notes": "Monthly table columns 1 Oct 2025 to 14 Oct 2026: Windows 10.3, 10.2, 9.9, 9.5, 9.2, 9.1, 9.0, 8.7, 8.6, 8.5, 8.3, 8.2, 8.1, 8.1. W3Techs measures the operating system of the web server behind a website (top 10 million sites, Tranco), not servers in general or servers inside businesses; Windows here means any Windows, with no version split. Report updated daily; dated by the page's own date line.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2025-10-01-windows-share-of-websites-10-3pct", "citation_text": "10.3% of websites with a known server operating system ran Windows on 1 October 2025, a year before the 8.1% of October 2026 (W3Techs, 2026). Source: W3Techs (Q-Success), \"Historical trends in the usage statistics of operating systems for websites, October 2026 (W3Techs, monthly view)\" (https://w3techs.com/technologies/history_overview/operating_system). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2025-10-01-windows-share-of-websites-10-3pct." }, { "id": "w3techs-2015-01-01-windows-share-of-websites-32-8pct", "family": "install-base-audits", "statement": "32.8% of websites with a known server operating system ran Windows on 1 January 2015, with Unix-type systems at 67.2% (W3Techs, 2026).", "short_statement": null, "short_refs": null, "value": 32.8, "unit": "% of websites with a known server OS (W3Techs top 10 million sites)", "display_value": "32.8%", "display_label": "", "display_hook": null, "row_label": "1 January 2015: Windows as server OS", "publisher_short": null, "geography": "Worldwide (web)", "period": "2015-01-01", "population": "Websites in W3Techs' survey of the top 10 million sites by Tranco ranking whose server operating system W3Techs can determine (Unix versus Windows only; a site may use more than one OS)", "sample_n": null, "publisher": "W3Techs (Q-Success)", "source_title": "Historical yearly trends in the usage statistics of operating systems for websites, October 2026 (W3Techs)", "source_url": "https://w3techs.com/technologies/history_overview/operating_system/ms/y", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Unix 67.2% 67.7% 66.6% 66.8% 68.9% 71.0% 72.5% 78.8% 80.5% 83.2% 88.1% 90.7% 92.1% Windows 32.8% 32.3% 33.5% 33.2% 31.1% 29.0% 27.6% 21.4% 19.8% 17.1% 12.1% 9.5% 8.1%", "locator": "Yearly history table (columns 1 Jan 2015 to 14 Oct 2026), column '1 Jan 2015': Unix 67.2%, Windows 32.8%", "derived": false, "formula": null, "headline": false, "series": "w3techs-windows-share-of-websites", "history": [], "notes": "Yearly table 1 Jan 2015 to 14 Oct 2026: Windows 32.8, 32.3, 33.5, 33.2, 31.1, 29.0, 27.6, 21.4, 19.8, 17.1, 12.1, 9.5, 8.1 (full series in install-base-audits-series-w3techs-windows-share-of-websites.csv). W3Techs measures the operating system of the web server behind a website (top 10 million sites, Tranco), not servers in general or servers inside businesses; Windows here means any Windows, with no version split. Report updated daily; dated by the page's own date line.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2015-01-01-windows-share-of-websites-32-8pct", "citation_text": "32.8% of websites with a known server operating system ran Windows on 1 January 2015, with Unix-type systems at 67.2% (W3Techs, 2026). Source: W3Techs (Q-Success), \"Historical yearly trends in the usage statistics of operating systems for websites, October 2026 (W3Techs)\" (https://w3techs.com/technologies/history_overview/operating_system/ms/y). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2015-01-01-windows-share-of-websites-32-8pct." }, { "id": "w3techs-2020-01-01-windows-share-of-websites-29-0pct", "family": "install-base-audits", "statement": "29.0% of websites with a known server operating system ran Windows on 1 January 2020, with Unix-type systems at 71.0% (W3Techs, 2026).", "short_statement": null, "short_refs": null, "value": 29, "unit": "% of websites with a known server OS (W3Techs top 10 million sites)", "display_value": "29.0%", "display_label": "", "display_hook": null, "row_label": "1 January 2020: Windows as server OS", "publisher_short": null, "geography": "Worldwide (web)", "period": "2020-01-01", "population": "Websites in W3Techs' survey of the top 10 million sites by Tranco ranking whose server operating system W3Techs can determine (Unix versus Windows only; a site may use more than one OS)", "sample_n": null, "publisher": "W3Techs (Q-Success)", "source_title": "Historical yearly trends in the usage statistics of operating systems for websites, October 2026 (W3Techs)", "source_url": "https://w3techs.com/technologies/history_overview/operating_system/ms/y", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Unix 67.2% 67.7% 66.6% 66.8% 68.9% 71.0% 72.5% 78.8% 80.5% 83.2% 88.1% 90.7% 92.1% Windows 32.8% 32.3% 33.5% 33.2% 31.1% 29.0% 27.6% 21.4% 19.8% 17.1% 12.1% 9.5% 8.1%", "locator": "Yearly history table (columns 1 Jan 2015 to 14 Oct 2026), column '1 Jan 2020': Unix 71.0%, Windows 29.0%", "derived": false, "formula": null, "headline": false, "series": "w3techs-windows-share-of-websites", "history": [], "notes": "Yearly table 1 Jan 2015 to 14 Oct 2026: Windows 32.8, 32.3, 33.5, 33.2, 31.1, 29.0, 27.6, 21.4, 19.8, 17.1, 12.1, 9.5, 8.1 (full series in install-base-audits-series-w3techs-windows-share-of-websites.csv). W3Techs measures the operating system of the web server behind a website (top 10 million sites, Tranco), not servers in general or servers inside businesses; Windows here means any Windows, with no version split. Report updated daily; dated by the page's own date line.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2020-01-01-windows-share-of-websites-29-0pct", "citation_text": "29.0% of websites with a known server operating system ran Windows on 1 January 2020, with Unix-type systems at 71.0% (W3Techs, 2026). Source: W3Techs (Q-Success), \"Historical yearly trends in the usage statistics of operating systems for websites, October 2026 (W3Techs)\" (https://w3techs.com/technologies/history_overview/operating_system/ms/y). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2020-01-01-windows-share-of-websites-29-0pct." }, { "id": "w3techs-2023-01-01-windows-share-of-websites-19-8pct", "family": "install-base-audits", "statement": "19.8% of websites with a known server operating system ran Windows on 1 January 2023, with Unix-type systems at 80.5% (W3Techs, 2026).", "short_statement": null, "short_refs": null, "value": 19.8, "unit": "% of websites with a known server OS (W3Techs top 10 million sites)", "display_value": "19.8%", "display_label": "", "display_hook": null, "row_label": "1 January 2023: Windows as server OS", "publisher_short": null, "geography": "Worldwide (web)", "period": "2023-01-01", "population": "Websites in W3Techs' survey of the top 10 million sites by Tranco ranking whose server operating system W3Techs can determine (Unix versus Windows only; a site may use more than one OS)", "sample_n": null, "publisher": "W3Techs (Q-Success)", "source_title": "Historical yearly trends in the usage statistics of operating systems for websites, October 2026 (W3Techs)", "source_url": "https://w3techs.com/technologies/history_overview/operating_system/ms/y", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Unix 67.2% 67.7% 66.6% 66.8% 68.9% 71.0% 72.5% 78.8% 80.5% 83.2% 88.1% 90.7% 92.1% Windows 32.8% 32.3% 33.5% 33.2% 31.1% 29.0% 27.6% 21.4% 19.8% 17.1% 12.1% 9.5% 8.1%", "locator": "Yearly history table (columns 1 Jan 2015 to 14 Oct 2026), column '1 Jan 2023': Unix 80.5%, Windows 19.8%", "derived": false, "formula": null, "headline": false, "series": "w3techs-windows-share-of-websites", "history": [], "notes": "Yearly table 1 Jan 2015 to 14 Oct 2026: Windows 32.8, 32.3, 33.5, 33.2, 31.1, 29.0, 27.6, 21.4, 19.8, 17.1, 12.1, 9.5, 8.1 (full series in install-base-audits-series-w3techs-windows-share-of-websites.csv). W3Techs measures the operating system of the web server behind a website (top 10 million sites, Tranco), not servers in general or servers inside businesses; Windows here means any Windows, with no version split. Report updated daily; dated by the page's own date line.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2023-01-01-windows-share-of-websites-19-8pct", "citation_text": "19.8% of websites with a known server operating system ran Windows on 1 January 2023, with Unix-type systems at 80.5% (W3Techs, 2026). Source: W3Techs (Q-Success), \"Historical yearly trends in the usage statistics of operating systems for websites, October 2026 (W3Techs)\" (https://w3techs.com/technologies/history_overview/operating_system/ms/y). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2023-01-01-windows-share-of-websites-19-8pct." }, { "id": "w3techs-2026-01-01-windows-share-of-websites-9-5pct", "family": "install-base-audits", "statement": "9.5% of websites with a known server operating system ran Windows on 1 January 2026, with Unix-type systems at 90.7% (W3Techs, 2026).", "short_statement": null, "short_refs": null, "value": 9.5, "unit": "% of websites with a known server OS (W3Techs top 10 million sites)", "display_value": "9.5%", "display_label": "", "display_hook": null, "row_label": "1 January 2026: Windows as server OS", "publisher_short": null, "geography": "Worldwide (web)", "period": "2026-01-01", "population": "Websites in W3Techs' survey of the top 10 million sites by Tranco ranking whose server operating system W3Techs can determine (Unix versus Windows only; a site may use more than one OS)", "sample_n": null, "publisher": "W3Techs (Q-Success)", "source_title": "Historical yearly trends in the usage statistics of operating systems for websites, October 2026 (W3Techs)", "source_url": "https://w3techs.com/technologies/history_overview/operating_system/ms/y", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Unix 67.2% 67.7% 66.6% 66.8% 68.9% 71.0% 72.5% 78.8% 80.5% 83.2% 88.1% 90.7% 92.1% Windows 32.8% 32.3% 33.5% 33.2% 31.1% 29.0% 27.6% 21.4% 19.8% 17.1% 12.1% 9.5% 8.1%", "locator": "Yearly history table (columns 1 Jan 2015 to 14 Oct 2026), column '1 Jan 2026': Unix 90.7%, Windows 9.5%", "derived": false, "formula": null, "headline": false, "series": "w3techs-windows-share-of-websites", "history": [], "notes": "Yearly table 1 Jan 2015 to 14 Oct 2026: Windows 32.8, 32.3, 33.5, 33.2, 31.1, 29.0, 27.6, 21.4, 19.8, 17.1, 12.1, 9.5, 8.1 (full series in install-base-audits-series-w3techs-windows-share-of-websites.csv). W3Techs measures the operating system of the web server behind a website (top 10 million sites, Tranco), not servers in general or servers inside businesses; Windows here means any Windows, with no version split. Report updated daily; dated by the page's own date line.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2026-01-01-windows-share-of-websites-9-5pct", "citation_text": "9.5% of websites with a known server operating system ran Windows on 1 January 2026, with Unix-type systems at 90.7% (W3Techs, 2026). Source: W3Techs (Q-Success), \"Historical yearly trends in the usage statistics of operating systems for websites, October 2026 (W3Techs)\" (https://w3techs.com/technologies/history_overview/operating_system/ms/y). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2026-01-01-windows-share-of-websites-9-5pct." }, { "id": "w3techs-2015-to-2026-windows-share-of-websites-fell-24-7-points-derived", "family": "install-base-audits", "statement": "24.7 percentage points is how far Windows' share of websites with a known server operating system fell between 1 January 2015 (32.8%) and 14 October 2026 (8.1%), a 75% relative decline (derived from W3Techs, 2026).", "short_statement": null, "short_refs": null, "value": 24.7, "unit": "percentage-point change in Windows' share of websites", "display_value": "-24.7 points", "display_label": "W3Techs, 1 January 2015 to 14 October 2026 (derived)", "display_hook": null, "row_label": "Change in Windows' share, 2015 to 2026", "publisher_short": null, "geography": "Worldwide (web)", "period": "2015-01-01/2026-10-14", "population": "Websites in W3Techs' survey of the top 10 million sites by Tranco ranking whose server operating system W3Techs can determine (Unix versus Windows only; a site may use more than one OS)", "sample_n": null, "publisher": "W3Techs (Q-Success)", "source_title": "Historical yearly trends in the usage statistics of operating systems for websites, October 2026 (W3Techs)", "source_url": "https://w3techs.com/technologies/history_overview/operating_system/ms/y", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Windows 32.8% 32.3% 33.5% 33.2% 31.1% 29.0% 27.6% 21.4% 19.8% 17.1% 12.1% 9.5% 8.1%", "locator": "Yearly history table, row Windows", "derived": true, "formula": "32.8 - 8.1 = 24.7 points; (32.8 - 8.1) / 32.8 = 75.3% relative decline", "headline": false, "series": "w3techs-windows-share-of-websites", "history": [], "notes": "W3Techs measures the operating system of the web server behind a website (top 10 million sites, Tranco), not servers in general or servers inside businesses; Windows here means any Windows, with no version split. Report updated daily; dated by the page's own date line.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2015-to-2026-windows-share-of-websites-fell-24-7-points-derived", "citation_text": "24.7 percentage points is how far Windows' share of websites with a known server operating system fell between 1 January 2015 (32.8%) and 14 October 2026 (8.1%), a 75% relative decline (derived from W3Techs, 2026). Source: W3Techs (Q-Success), \"Historical yearly trends in the usage statistics of operating systems for websites, October 2026 (W3Techs)\" (https://w3techs.com/technologies/history_overview/operating_system/ms/y). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2015-to-2026-windows-share-of-websites-fell-24-7-points-derived." }, { "id": "w3techs-2026-10-14-microsoft-iis-share-of-websites-3-0pct", "family": "install-base-audits", "statement": "3.0% of websites with a known web server used Microsoft IIS on 14 October 2026, behind Cloudflare Server (31.9%), Nginx (30.6%), Apache (21.7%), LiteSpeed (14.1%) and Node.js (7.2%) (W3Techs, 2026).", "short_statement": null, "short_refs": null, "value": 3, "unit": "% of websites with a known web server (W3Techs top 10 million sites)", "display_value": "3.0%", "display_label": "", "display_hook": null, "row_label": "14 October 2026: Microsoft IIS as web server", "publisher_short": null, "geography": "Worldwide (web)", "period": "2026-10-14", "population": "Websites in W3Techs' survey of the top 10 million sites by Tranco ranking whose web server software W3Techs can determine (a site may use more than one web server)", "sample_n": null, "publisher": "W3Techs (Q-Success)", "source_title": "Usage Statistics and Market Share of Web Servers, October 2026 (W3Techs, 14 October 2026)", "source_url": "https://w3techs.com/technologies/overview/web_server", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Cloudflare Server 31.9% Nginx 30.6% Apache 21.7% LiteSpeed 14.1% Node.js 7.2% Microsoft-IIS 3.0% Caddy 1.1% Google Servers 1.0% ... W3Techs.com, 14 October 2026", "locator": "Diagram 'Percentages of websites using various web servers', row Microsoft-IIS", "derived": false, "formula": null, "headline": false, "series": "w3techs-iis-share-of-websites", "history": [], "notes": "IIS ships only with Windows Server, so its share bounds the Windows web-server population from below (Windows sites may also run other servers). W3Techs measures the operating system of the web server behind a website (top 10 million sites, Tranco), not servers in general or servers inside businesses; Windows here means any Windows, with no version split. Report updated daily; dated by the page's own date line.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2026-10-14-microsoft-iis-share-of-websites-3-0pct", "citation_text": "3.0% of websites with a known web server used Microsoft IIS on 14 October 2026, behind Cloudflare Server (31.9%), Nginx (30.6%), Apache (21.7%), LiteSpeed (14.1%) and Node.js (7.2%) (W3Techs, 2026). Source: W3Techs (Q-Success), \"Usage Statistics and Market Share of Web Servers, October 2026 (W3Techs, 14 October 2026)\" (https://w3techs.com/technologies/overview/web_server). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2026-10-14-microsoft-iis-share-of-websites-3-0pct." }, { "id": "w3techs-2015-01-01-microsoft-iis-share-of-websites-13-3pct", "family": "install-base-audits", "statement": "13.3% of websites with a known web server used Microsoft IIS on 1 January 2015, falling every year since to 3.0% by 14 October 2026 (W3Techs, 2026).", "short_statement": null, "short_refs": null, "value": 13.3, "unit": "% of websites with a known web server (W3Techs top 10 million sites)", "display_value": "13.3%", "display_label": "", "display_hook": null, "row_label": "1 January 2015: Microsoft IIS as web server", "publisher_short": null, "geography": "Worldwide (web)", "period": "2015-01-01", "population": "Websites in W3Techs' survey of the top 10 million sites by Tranco ranking whose web server software W3Techs can determine (a site may use more than one web server)", "sample_n": null, "publisher": "W3Techs (Q-Success)", "source_title": "Historical yearly trends in the usage statistics of web servers, October 2026 (W3Techs)", "source_url": "https://w3techs.com/technologies/history_overview/web_server/ms/y", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Microsoft-IIS 13.3% 12.4% 11.6% 10.5% 9.0% 8.0% 7.3% 6.2% 5.8% 5.1% 4.2% 3.5% 3.0%", "locator": "Yearly history table, row Microsoft-IIS (columns 1 Jan 2015 to 14 Oct 2026)", "derived": false, "formula": null, "headline": false, "series": "w3techs-iis-share-of-websites", "history": [], "notes": "Full series in install-base-audits-series-w3techs-iis-share-of-websites.csv. W3Techs measures the operating system of the web server behind a website (top 10 million sites, Tranco), not servers in general or servers inside businesses; Windows here means any Windows, with no version split. Report updated daily; dated by the page's own date line.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2015-01-01-microsoft-iis-share-of-websites-13-3pct", "citation_text": "13.3% of websites with a known web server used Microsoft IIS on 1 January 2015, falling every year since to 3.0% by 14 October 2026 (W3Techs, 2026). Source: W3Techs (Q-Success), \"Historical yearly trends in the usage statistics of web servers, October 2026 (W3Techs)\" (https://w3techs.com/technologies/history_overview/web_server/ms/y). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#w3techs-2015-01-01-microsoft-iis-share-of-websites-13-3pct." }, { "id": "netcraft-2026-07-microsoft-web-facing-computers-847128-5-73pct", "family": "install-base-audits", "statement": "847,128 web-facing computers ran Microsoft web server software in July 2026, 5.73% of the 14,772,048 web-facing computers in Netcraft's survey, down 0.08 points on June 2026 (Netcraft, 2026).", "short_statement": "**847,128** web-facing computers ran Microsoft web server software in July 2026, 5.73% of all.", "short_refs": null, "value": 847128, "unit": "web-facing computers running Microsoft (IIS) web server software", "display_value": "847,128", "display_label": "Netcraft Web Server Survey, July 2026", "display_hook": null, "row_label": "July 2026: computers running Microsoft web server software", "publisher_short": null, "geography": "Worldwide (web)", "period": "2026-07", "population": "Web-facing computers counted by Netcraft's monthly Web Server Survey (unique computers acting as web servers, identified from low-level TCP/IP characteristics), by web server developer", "sample_n": 14772048, "publisher": "Netcraft", "source_title": "July 2026 Web Server Survey (Netcraft, published 27 July 2026)", "source_url": "https://www.netcraft.com/blog/july-2026-web-server-survey", "source_type": "secondary", "source_access": "open", "published_at": "2026-07-27", "accessed_at": "2026-10-14", "quote": "In the July 2026 survey we received responses from 1,494,915,628 sites across 305,348,459 domains and 14,772,048 web-facing computers. ... Microsoft 851,472 5.81% 847,128 5.73% -0.08", "locator": "Opening paragraph and the web-facing computers table (columns June 2026, Percent, July 2026, Percent, Change), row Microsoft", "derived": false, "formula": null, "headline": false, "series": "netcraft-microsoft-web-facing-computers", "history": [], "notes": "Netcraft's 'Microsoft' row is IIS by developer; Windows computers running other web servers are not counted under Microsoft. The July 2026 survey is the latest published on 2026-10-14 (no August, September or October 2026 survey found). Only the web-facing computers table carries a Microsoft row in 2025 and 2026; Microsoft no longer appears in the sites, active sites or domains tables.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2026-07-microsoft-web-facing-computers-847128-5-73pct", "citation_text": "847,128 web-facing computers ran Microsoft web server software in July 2026, 5.73% of the 14,772,048 web-facing computers in Netcraft's survey, down 0.08 points on June 2026 (Netcraft, 2026). Source: Netcraft, \"July 2026 Web Server Survey (Netcraft, published 27 July 2026)\" (https://www.netcraft.com/blog/july-2026-web-server-survey). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2026-07-microsoft-web-facing-computers-847128-5-73pct." }, { "id": "netcraft-2025-07-microsoft-web-facing-computers-1113303-8-10pct", "family": "install-base-audits", "statement": "1,113,303 web-facing computers ran Microsoft web server software in July 2025, 8.10% of the 13,740,462 web-facing computers in Netcraft's survey (Netcraft, 2025).", "short_statement": null, "short_refs": null, "value": 1113303, "unit": "web-facing computers running Microsoft (IIS) web server software", "display_value": "1,113,303", "display_label": "", "display_hook": null, "row_label": "July 2025: computers running Microsoft web server software", "publisher_short": null, "geography": "Worldwide (web)", "period": "2025-07", "population": "Web-facing computers counted by Netcraft's monthly Web Server Survey (unique computers acting as web servers, identified from low-level TCP/IP characteristics), by web server developer", "sample_n": 13740462, "publisher": "Netcraft", "source_title": "July 2025 Web Server Survey (Netcraft, published 31 July 2025)", "source_url": "https://www.netcraft.com/blog/july-2025-web-server-survey", "source_type": "secondary", "source_access": "open", "published_at": "2025-07-31", "accessed_at": "2026-10-14", "quote": "In the July 2025 survey we received responses from 1,275,138,490 sites across 280,876,958 domains and 13,740,462 web-facing computers. ... Microsoft 1,101,284 8.12% 1,113,303 8.10% -0.02", "locator": "Opening paragraph and the web-facing computers table (columns June 2025, Percent, July 2025, Percent, Change), row Microsoft", "derived": false, "formula": null, "headline": false, "series": "netcraft-microsoft-web-facing-computers", "history": [], "notes": "Netcraft's 'Microsoft' row is IIS by developer; Windows computers running other web servers are not counted under Microsoft. The July 2026 survey is the latest published on 2026-10-14 (no August, September or October 2026 survey found). Only the web-facing computers table carries a Microsoft row in 2025 and 2026; Microsoft no longer appears in the sites, active sites or domains tables.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2025-07-microsoft-web-facing-computers-1113303-8-10pct", "citation_text": "1,113,303 web-facing computers ran Microsoft web server software in July 2025, 8.10% of the 13,740,462 web-facing computers in Netcraft's survey (Netcraft, 2025). Source: Netcraft, \"July 2025 Web Server Survey (Netcraft, published 31 July 2025)\" (https://www.netcraft.com/blog/july-2025-web-server-survey). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2025-07-microsoft-web-facing-computers-1113303-8-10pct." }, { "id": "netcraft-2025-07-to-2026-07-microsoft-web-facing-computers-fell-23-9pct-derived", "family": "install-base-audits", "statement": "23.9% fewer web-facing computers ran Microsoft web server software in July 2026 (847,128) than in July 2025 (1,113,303), a loss of 266,175 computers in the year Windows Server 2012's ESU ran out (derived from Netcraft, 2026).", "short_statement": null, "short_refs": null, "value": -23.9, "unit": "% change in web-facing computers running Microsoft web server software, July 2025 to July 2026", "display_value": "-23.9%", "display_label": "derived from Netcraft's July 2025 and July 2026 Web Server Surveys", "display_hook": null, "row_label": "Change, July 2025 to July 2026", "publisher_short": null, "geography": "Worldwide (web)", "period": "2025-07/2026-07", "population": "Web-facing computers counted by Netcraft's monthly Web Server Survey (unique computers acting as web servers, identified from low-level TCP/IP characteristics), by web server developer", "sample_n": null, "publisher": "Netcraft", "source_title": "July 2026 Web Server Survey (Netcraft, published 27 July 2026)", "source_url": "https://www.netcraft.com/blog/july-2026-web-server-survey", "source_type": "secondary", "source_access": "open", "published_at": "2026-07-27", "accessed_at": "2026-10-14", "quote": "Microsoft 851,472 5.81% 847,128 5.73% -0.08", "locator": "Web-facing computers tables of the July 2025 and July 2026 surveys, row Microsoft", "derived": true, "formula": "(847128 - 1113303) / 1113303 = -23.9%; 1113303 - 847128 = 266175 (July 2025 figure from https://www.netcraft.com/blog/july-2025-web-server-survey)", "headline": false, "series": "netcraft-microsoft-web-facing-computers", "history": [], "notes": "Share fell from 8.10% to 5.73% while total web-facing computers grew 7.5% (13,740,462 to 14,772,048). Netcraft's 'Microsoft' row is IIS by developer; Windows computers running other web servers are not counted under Microsoft. The July 2026 survey is the latest published on 2026-10-14 (no August, September or October 2026 survey found). Only the web-facing computers table carries a Microsoft row in 2025 and 2026; Microsoft no longer appears in the sites, active sites or domains tables.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2025-07-to-2026-07-microsoft-web-facing-computers-fell-23-9pct-derived", "citation_text": "23.9% fewer web-facing computers ran Microsoft web server software in July 2026 (847,128) than in July 2025 (1,113,303), a loss of 266,175 computers in the year Windows Server 2012's ESU ran out (derived from Netcraft, 2026). Source: Netcraft, \"July 2026 Web Server Survey (Netcraft, published 27 July 2026)\" (https://www.netcraft.com/blog/july-2026-web-server-survey). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2025-07-to-2026-07-microsoft-web-facing-computers-fell-23-9pct-derived." }, { "id": "netcraft-2020-01-windows-server-2008-and-2008-r2-web-facing-computers-887000", "family": "install-base-audits", "statement": "887,000 web-facing computers were running Windows Server 2008 or 2008 R2 in January 2020, the month Microsoft ended their support, making them the most popular Windows versions in the web-server market (Netcraft, 2020).", "short_statement": null, "short_refs": null, "value": 887000, "unit": "web-facing computers running Windows Server 2008 or 2008 R2", "display_value": "887,000", "display_label": "Netcraft Web Server Survey, January 2020", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (web)", "period": "2020-01", "population": "Web-facing computers in Netcraft's January 2020 Web Server Survey (9,576,845 computers, 1,295,973,827 sites, 249,618,033 domains), operating system identified from TCP/IP characteristics", "sample_n": 9576845, "publisher": "Netcraft", "source_title": "January 2020 Web Server Survey (Netcraft, published 20 January 2020)", "source_url": "https://www.netcraft.com/blog/january-2020-web-server-survey", "source_type": "secondary", "source_access": "open", "published_at": "2020-01-20", "accessed_at": "2026-10-14", "quote": "As of January 2020, Netcraft counted 887,000 web-facing computers running Windows Server 2008 and 2008 R2, making them the most popular versions of Windows employed in the webserver market.", "locator": "Section 'Windows Server 2008 End-of-life', third paragraph", "derived": false, "formula": null, "headline": false, "series": "netcraft-windows-server-version-web-facing-computers-at-deadline", "history": [], "notes": "The Windows Server 2008 deadline comparator (eol-history-2003-2008 family) draws on this record; recorded here because Netcraft's web-server population is this family's series. 'Web-facing computers' are unique machines, not sites or IP addresses.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2020-01-windows-server-2008-and-2008-r2-web-facing-computers-887000", "citation_text": "887,000 web-facing computers were running Windows Server 2008 or 2008 R2 in January 2020, the month Microsoft ended their support, making them the most popular Windows versions in the web-server market (Netcraft, 2020). Source: Netcraft, \"January 2020 Web Server Survey (Netcraft, published 20 January 2020)\" (https://www.netcraft.com/blog/january-2020-web-server-survey). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2020-01-windows-server-2008-and-2008-r2-web-facing-computers-887000." }, { "id": "netcraft-2020-01-over-half-of-windows-web-facing-computers-ran-end-of-life-versions", "family": "install-base-audits", "statement": "Over half of all Windows web-facing computers counted by Netcraft in January 2020 ran an end-of-life version of Windows once Windows Server 2008 and 2008 R2 left support on 14 January 2020 (Netcraft, 2020).", "short_statement": null, "short_refs": null, "value": 50, "unit": "% of Windows web-facing computers on end-of-life Windows versions (lower bound, 'over half')", "display_value": "over half", "display_label": "Netcraft Web Server Survey, January 2020", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (web)", "period": "2020-01", "population": "Web-facing computers in Netcraft's January 2020 Web Server Survey (9,576,845 computers, 1,295,973,827 sites, 249,618,033 domains), operating system identified from TCP/IP characteristics", "sample_n": 9576845, "publisher": "Netcraft", "source_title": "January 2020 Web Server Survey (Netcraft, published 20 January 2020)", "source_url": "https://www.netcraft.com/blog/january-2020-web-server-survey", "source_type": "secondary", "source_access": "open", "published_at": "2020-01-20", "accessed_at": "2026-10-14", "quote": "Furthermore, over half of all counted Windows computers ran some end-of-life version of the Windows family of operating systems.", "locator": "Section 'Windows Server 2008 End-of-life', third paragraph", "derived": false, "formula": null, "headline": false, "series": "netcraft-windows-server-version-web-facing-computers-at-deadline", "history": [], "notes": "Compare Rapid7's 59% of internet-exposed Windows Server instances on unsupported versions in September 2020 (exposure-security family, rapid7-2020-10-19-unsupported-windows-server-internet-exposed-59pct). The Windows Server 2008 deadline comparator (eol-history-2003-2008 family) draws on this record; recorded here because Netcraft's web-server population is this family's series. 'Web-facing computers' are unique machines, not sites or IP addresses.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2020-01-over-half-of-windows-web-facing-computers-ran-end-of-life-versions", "citation_text": "Over half of all Windows web-facing computers counted by Netcraft in January 2020 ran an end-of-life version of Windows once Windows Server 2008 and 2008 R2 left support on 14 January 2020 (Netcraft, 2020). Source: Netcraft, \"January 2020 Web Server Survey (Netcraft, published 20 January 2020)\" (https://www.netcraft.com/blog/january-2020-web-server-survey). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2020-01-over-half-of-windows-web-facing-computers-ran-end-of-life-versions." }, { "id": "netcraft-2020-01-iis-7-5-active-sites-2-85-million-32-5pct-of-iis", "family": "install-base-audits", "statement": "Almost 2.85 million active sites ran on IIS 7.5, the version built into Windows Server 2008 R2, in January 2020, 32.5% of all active sites on any IIS version, with about 940,000 more on even older IIS versions (Netcraft, 2020).", "short_statement": null, "short_refs": null, "value": 2850000, "unit": "active sites running on IIS 7.5 (Windows Server 2008 R2)", "display_value": "2.85 million", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (web)", "period": "2020-01", "population": "Active sites in Netcraft's January 2020 Web Server Survey served by Microsoft IIS, by IIS version", "sample_n": null, "publisher": "Netcraft", "source_title": "January 2020 Web Server Survey (Netcraft, published 20 January 2020)", "source_url": "https://www.netcraft.com/blog/january-2020-web-server-survey", "source_type": "secondary", "source_access": "open", "published_at": "2020-01-20", "accessed_at": "2026-10-14", "quote": "Turning to the use of IIS specifically, Netcraft found almost 2.85 million active sites running on IIS/7.5 - 32.5% of all active sites running on some version of IIS. Approximately 940,000 active sites run on even older", "locator": "Section 'Windows Server 2008 End-of-life', fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The Windows Server 2008 deadline comparator (eol-history-2003-2008 family) draws on this record; recorded here because Netcraft's web-server population is this family's series. 'Web-facing computers' are unique machines, not sites or IP addresses.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2020-01-iis-7-5-active-sites-2-85-million-32-5pct-of-iis", "citation_text": "Almost 2.85 million active sites ran on IIS 7.5, the version built into Windows Server 2008 R2, in January 2020, 32.5% of all active sites on any IIS version, with about 940,000 more on even older IIS versions (Netcraft, 2020). Source: Netcraft, \"January 2020 Web Server Survey (Netcraft, published 20 January 2020)\" (https://www.netcraft.com/blog/january-2020-web-server-survey). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2020-01-iis-7-5-active-sites-2-85-million-32-5pct-of-iis." }, { "id": "netcraft-2015-08-11-windows-server-2003-web-facing-computers-609000", "family": "install-base-audits", "statement": "609,000 web-facing computers were still running Windows Server 2003 in July 2015, the month its extended support ended, over 10% of all web-facing computers in Netcraft's survey (Netcraft, 2015).", "short_statement": "**609,000** web-facing computers still ran Windows Server 2003 in July 2015, the month its support ended.", "short_refs": null, "value": 609000, "unit": "web-facing computers running Windows Server 2003", "display_value": "609,000", "display_label": "Netcraft Web Server Survey, July 2015", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (web)", "period": "2015-07", "population": "Web-facing computers and websites in Netcraft's July 2015 Web Server Survey, operating system identified from low-level TCP/IP characteristics of response packets", "sample_n": null, "publisher": "Netcraft", "source_title": "Millions still running the risk with Windows Server 2003 (Netcraft, published 11 August 2015)", "source_url": "https://www.netcraft.com/blog/millions-still-running-the-risk-with-windows-server-2003", "source_type": "secondary", "source_access": "open", "published_at": "2015-08-11", "accessed_at": "2026-10-14", "quote": "Further analysis of the low-level TCP/IP characteristics reveals a total of 609,000 web-facing computers running Windows Server 2003. This is over 10% of all web-facing computers", "locator": "Section 'How many Windows Server 2003 installations are exposed to the web?'", "derived": false, "formula": null, "headline": false, "series": "netcraft-windows-server-version-web-facing-computers-at-deadline", "history": [], "notes": "The Windows Server 2003 deadline comparator (eol-history-2003-2008 family) draws on this record; recorded here because Netcraft's web-server population is this family's series. Published four weeks after Server 2003's 14 July 2015 end of extended support.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2015-08-11-windows-server-2003-web-facing-computers-609000", "citation_text": "609,000 web-facing computers were still running Windows Server 2003 in July 2015, the month its extended support ended, over 10% of all web-facing computers in Netcraft's survey (Netcraft, 2015). Source: Netcraft, \"Millions still running the risk with Windows Server 2003 (Netcraft, published 11 August 2015)\" (https://www.netcraft.com/blog/millions-still-running-the-risk-with-windows-server-2003). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2015-08-11-windows-server-2003-web-facing-computers-609000." }, { "id": "netcraft-2015-08-11-windows-server-2003-sites-175-million-over-a-fifth-of-survey", "family": "install-base-audits", "statement": "175 million websites were served directly from Windows Server 2003 computers in July 2015, more than a fifth of all websites in Netcraft's survey, 73% of them by IIS 6.0 (Netcraft, 2015).", "short_statement": null, "short_refs": null, "value": 175000000, "unit": "websites served directly from Windows Server 2003 computers", "display_value": "175 million", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (web)", "period": "2015-07", "population": "Web-facing computers and websites in Netcraft's July 2015 Web Server Survey, operating system identified from low-level TCP/IP characteristics of response packets", "sample_n": null, "publisher": "Netcraft", "source_title": "Millions still running the risk with Windows Server 2003 (Netcraft, published 11 August 2015)", "source_url": "https://www.netcraft.com/blog/millions-still-running-the-risk-with-windows-server-2003", "source_type": "secondary", "source_access": "open", "published_at": "2015-08-11", "accessed_at": "2026-10-14", "quote": "Netcraft's July 2015 Web Server Survey found 175 million websites that are served directly from Windows Server 2003 computers. These account for more than a fifth of all websites in the survey", "locator": "Section 'Fifth of the internet still running Windows Server 2003'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Sites, not machines: the 175 million sites sat on 1.6 million IP addresses and 609,000 computers. The Windows Server 2003 deadline comparator (eol-history-2003-2008 family) draws on this record; recorded here because Netcraft's web-server population is this family's series. Published four weeks after Server 2003's 14 July 2015 end of extended support.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2015-08-11-windows-server-2003-sites-175-million-over-a-fifth-of-survey", "citation_text": "175 million websites were served directly from Windows Server 2003 computers in July 2015, more than a fifth of all websites in Netcraft's survey, 73% of them by IIS 6.0 (Netcraft, 2015). Source: Netcraft, \"Millions still running the risk with Windows Server 2003 (Netcraft, published 11 August 2015)\" (https://www.netcraft.com/blog/millions-still-running-the-risk-with-windows-server-2003). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2015-08-11-windows-server-2003-sites-175-million-over-a-fifth-of-survey." }, { "id": "netcraft-2015-08-11-windows-server-2003-china-and-us-55pct-of-computers", "family": "install-base-audits", "statement": "55% of the world's web-facing Windows Server 2003 computers were in China (169,000) and the United States (166,000) in July 2015, against 43% of all other web-facing computers (Netcraft, 2015).", "short_statement": null, "short_refs": null, "value": 55, "unit": "% of web-facing Windows Server 2003 computers located in China and the US", "display_value": "55%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "China and United States", "period": "2015-07", "population": "Web-facing computers and websites in Netcraft's July 2015 Web Server Survey, operating system identified from low-level TCP/IP characteristics of response packets", "sample_n": null, "publisher": "Netcraft", "source_title": "Millions still running the risk with Windows Server 2003 (Netcraft, published 11 August 2015)", "source_url": "https://www.netcraft.com/blog/millions-still-running-the-risk-with-windows-server-2003", "source_type": "secondary", "source_access": "open", "published_at": "2015-08-11", "accessed_at": "2026-10-14", "quote": "China and the United States account for 55% of the world's Windows Server 2003 computers (169,000 in China and 166,000 in the US), yet only 43% of all other web facing computers.", "locator": "Section 'Who's still using Windows Server 2003?'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Same two countries lead Bitsight's Server 2012 and 2008 observations in 2026 (US 26.1% and China 14.6% for 2012; China 27.7% and US 23.0% for 2008). The Windows Server 2003 deadline comparator (eol-history-2003-2008 family) draws on this record; recorded here because Netcraft's web-server population is this family's series. Published four weeks after Server 2003's 14 July 2015 end of extended support.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2015-08-11-windows-server-2003-china-and-us-55pct-of-computers", "citation_text": "55% of the world's web-facing Windows Server 2003 computers were in China (169,000) and the United States (166,000) in July 2015, against 43% of all other web-facing computers (Netcraft, 2015). Source: Netcraft, \"Millions still running the risk with Windows Server 2003 (Netcraft, published 11 August 2015)\" (https://www.netcraft.com/blog/millions-still-running-the-risk-with-windows-server-2003). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#netcraft-2015-08-11-windows-server-2003-china-and-us-55pct-of-computers." }, { "id": "enlyft-2026-10-14-windows-server-2012-share-of-operating-systems-category-0-5pct", "family": "install-base-audits", "statement": "About 0.5% was Windows Server 2012's share of Enlyft's 'Operating Systems' product category as shown on 14 October 2026, a share of vendor-tracked company-product pairs rather than of servers (Enlyft, 2026).", "short_statement": null, "short_refs": null, "value": 0.5, "unit": "% of Enlyft's Operating Systems category (company-product pairs)", "display_value": "about 0.5%", "display_label": "", "display_hook": null, "row_label": "Enlyft: Windows Server 2012's share of its operating systems category", "publisher_short": null, "geography": "Worldwide (Enlyft database)", "period": "2026-10-14", "population": "Companies in Enlyft's database tagged as using Windows Server 2012, built by 'scanning billions of public documents' with 'indexing techniques combined with advanced data science' (no sampling frame, date of observation or definition of 'use' published)", "sample_n": null, "publisher": "Enlyft", "source_title": "Companies using Windows Server 2012 and its marketshare (Enlyft, as shown 14 October 2026)", "source_url": "https://enlyft.com/tech/products/windows-server-2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "In the Operating Systems category, Windows Server 2012 has a market share of about 0.5%.", "locator": "Section 'Windows Server 2012 Market Share and Competitors in Operating Systems'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The page title gives 0.53%. A NUMBER THE PAGE WILL NOT PUBLISH AS A COUNT: Enlyft is a sales-intelligence vendor; the page gives no method beyond 'scanning billions of public documents', no date (dated by access), and counts companies, not servers. Comparable vendor counts seen in search snippets on 2026-10-14 but not fetched: iDataLabs 32,015 companies, Landbase 8,214, Datanyze 3,528 (a spread of 10x, which is the point). HG Insights' Windows Server 2012 page renders only through JavaScript and showed no figures to the fetch tool; 6sense's comparison page gives 27,732 companies on Windows Server 2012 and 10,774 on 2016 (record 6sense-2026-10-14-companies-using-windows-server-2012-27732-and-2016-10774).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#enlyft-2026-10-14-windows-server-2012-share-of-operating-systems-category-0-5pct", "citation_text": "About 0.5% was Windows Server 2012's share of Enlyft's 'Operating Systems' product category as shown on 14 October 2026, a share of vendor-tracked company-product pairs rather than of servers (Enlyft, 2026). Source: Enlyft, \"Companies using Windows Server 2012 and its marketshare (Enlyft, as shown 14 October 2026)\" (https://enlyft.com/tech/products/windows-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#enlyft-2026-10-14-windows-server-2012-share-of-operating-systems-category-0-5pct." }, { "id": "enlyft-2026-10-14-windows-server-2012-customers-in-united-states-46pct", "family": "install-base-audits", "statement": "46% of the companies Enlyft tags as Windows Server 2012 users were in the United States and 8% in the United Kingdom as shown on 14 October 2026, with 27% having under 50 employees and 29% over 1,000 (Enlyft, 2026).", "short_statement": null, "short_refs": null, "value": 46, "unit": "% of Enlyft's Windows Server 2012 companies located in the US", "display_value": "46%", "display_label": "", "display_hook": null, "row_label": "Enlyft: Windows Server 2012 users in the United States", "publisher_short": null, "geography": "United States", "period": "2026-10-14", "population": "Companies in Enlyft's database tagged as using Windows Server 2012, built by 'scanning billions of public documents' with 'indexing techniques combined with advanced data science' (no sampling frame, date of observation or definition of 'use' published)", "sample_n": null, "publisher": "Enlyft", "source_title": "Companies using Windows Server 2012 and its marketshare (Enlyft, as shown 14 October 2026)", "source_url": "https://enlyft.com/tech/products/windows-server-2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "46% of Windows Server 2012 customers are in United States and 8% are in United Kingdom.", "locator": "Section 'Top Countries that use Windows Server 2012'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "A NUMBER THE PAGE WILL NOT PUBLISH AS A COUNT: Enlyft is a sales-intelligence vendor; the page gives no method beyond 'scanning billions of public documents', no date (dated by access), and counts companies, not servers. Comparable vendor counts seen in search snippets on 2026-10-14 but not fetched: iDataLabs 32,015 companies, Landbase 8,214, Datanyze 3,528 (a spread of 10x, which is the point). HG Insights' Windows Server 2012 page renders only through JavaScript and showed no figures to the fetch tool; 6sense's comparison page gives 27,732 companies on Windows Server 2012 and 10,774 on 2016 (record 6sense-2026-10-14-companies-using-windows-server-2012-27732-and-2016-10774).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#enlyft-2026-10-14-windows-server-2012-customers-in-united-states-46pct", "citation_text": "46% of the companies Enlyft tags as Windows Server 2012 users were in the United States and 8% in the United Kingdom as shown on 14 October 2026, with 27% having under 50 employees and 29% over 1,000 (Enlyft, 2026). Source: Enlyft, \"Companies using Windows Server 2012 and its marketshare (Enlyft, as shown 14 October 2026)\" (https://enlyft.com/tech/products/windows-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#enlyft-2026-10-14-windows-server-2012-customers-in-united-states-46pct." }, { "id": "microsoft-lifecycle-windows-server-2003-release-2003-05-28", "family": "lifecycle-dates-esu", "statement": "Windows Server 2003 was released on 28 May 2003, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "28 May 2003", "display_label": "", "display_hook": null, "row_label": "Windows Server 2003", "publisher_short": null, "geography": "Worldwide", "period": "2003-05-28", "population": "Windows Server 2003, all editions (Datacenter, Enterprise, Standard and Web editions (32-bit, x64 and Itanium))", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2003 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-", "source_type": "primary", "source_access": "open", "published_at": "2022-10-25", "accessed_at": "2026-10-14", "quote": "Windows Server 2003 | 5/28/2003 8:00:00 AM | 7/14/2010 6:59:59 AM | 7/15/2015 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2003' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Start Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). Page note: 'Itanium-Based Systems have a start date of June 19, 2003.' The page URL ends in a hyphen (windows-server-2003-). Aggregator note: endoflife.date's API (fetched 2026-10-14, saved as raw/lifecycle-dates-esu/endoflife-date-api-windows-server-2026-10-14.json) gives 24 April 2003 as the release date (the RTM date), not Microsoft's lifecycle start date of 28 May 2003.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2003-release-2003-05-28", "citation_text": "Windows Server 2003 was released on 28 May 2003, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2022). Source: Microsoft, \"Windows Server 2003 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2003-release-2003-05-28." }, { "id": "microsoft-lifecycle-windows-server-2003-mainstream-end-2010-07-13", "family": "lifecycle-dates-esu", "statement": "Windows Server 2003 reached the end of mainstream support on 13 July 2010 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "13 July 2010", "display_label": "", "display_hook": null, "row_label": "Windows Server 2003", "publisher_short": null, "geography": "Worldwide", "period": "2010-07-13", "population": "Windows Server 2003, all editions (Datacenter, Enterprise, Standard and Web editions (32-bit, x64 and Itanium))", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2003 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-", "source_type": "primary", "source_access": "open", "published_at": "2022-10-25", "accessed_at": "2026-10-14", "quote": "Windows Server 2003 | 5/28/2003 8:00:00 AM | 7/14/2010 6:59:59 AM | 7/15/2015 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2003' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Mainstream End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2003-mainstream-end-2010-07-13", "citation_text": "Windows Server 2003 reached the end of mainstream support on 13 July 2010 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2003 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2003-mainstream-end-2010-07-13." }, { "id": "microsoft-lifecycle-windows-server-2003-extended-end-2015-07-14", "family": "lifecycle-dates-esu", "statement": "Windows Server 2003 reached the end of extended support on 14 July 2015, after mainstream support ended on 13 July 2010 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 July 2015", "display_label": "", "display_hook": null, "row_label": "Windows Server 2003", "publisher_short": null, "geography": "Worldwide", "period": "2015-07-14", "population": "Windows Server 2003, all editions (Datacenter, Enterprise, Standard and Web editions (32-bit, x64 and Itanium))", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2003 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-", "source_type": "primary", "source_access": "open", "published_at": "2022-10-25", "accessed_at": "2026-10-14", "quote": "Windows Server 2003 | 5/28/2003 8:00:00 AM | 7/14/2010 6:59:59 AM | 7/15/2015 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2003' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Extended End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). No Extended Security Update programme existed for Windows Server 2003; the Releases table lists Service Pack 2 ending on the same day (7/15/2015 6:59:59 AM). The eol-history-2003-2008 family covers what was still running at this deadline.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2003-extended-end-2015-07-14", "citation_text": "Windows Server 2003 reached the end of extended support on 14 July 2015, after mainstream support ended on 13 July 2010 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2003 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2003-extended-end-2015-07-14." }, { "id": "microsoft-lifecycle-windows-server-2003-r2-release-2006-03-05", "family": "lifecycle-dates-esu", "statement": "Windows Server 2003 R2 was released on 5 March 2006, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "5 March 2006", "display_label": "", "display_hook": null, "row_label": "Windows Server 2003 R2", "publisher_short": null, "geography": "Worldwide", "period": "2006-03-05", "population": "Windows Server 2003 R2, all editions (Datacenter, Enterprise and Standard editions (32-bit and x64))", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2003 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-10-25", "accessed_at": "2026-10-14", "quote": "Windows Server 2003 R2 | 3/5/2006 8:00:00 AM | 7/14/2010 6:59:59 AM | 7/15/2015 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2003 R2' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Start Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2003-r2-release-2006-03-05", "citation_text": "Windows Server 2003 R2 was released on 5 March 2006, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2022). Source: Microsoft, \"Windows Server 2003 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2003-r2-release-2006-03-05." }, { "id": "microsoft-lifecycle-windows-server-2003-r2-mainstream-end-2010-07-13", "family": "lifecycle-dates-esu", "statement": "Windows Server 2003 R2 reached the end of mainstream support on 13 July 2010 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "13 July 2010", "display_label": "", "display_hook": null, "row_label": "Windows Server 2003 R2", "publisher_short": null, "geography": "Worldwide", "period": "2010-07-13", "population": "Windows Server 2003 R2, all editions (Datacenter, Enterprise and Standard editions (32-bit and x64))", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2003 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-10-25", "accessed_at": "2026-10-14", "quote": "Windows Server 2003 R2 | 3/5/2006 8:00:00 AM | 7/14/2010 6:59:59 AM | 7/15/2015 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2003 R2' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Mainstream End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2003-r2-mainstream-end-2010-07-13", "citation_text": "Windows Server 2003 R2 reached the end of mainstream support on 13 July 2010 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2003 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2003-r2-mainstream-end-2010-07-13." }, { "id": "microsoft-lifecycle-windows-server-2003-r2-extended-end-2015-07-14", "family": "lifecycle-dates-esu", "statement": "Windows Server 2003 R2 reached the end of extended support on 14 July 2015, after mainstream support ended on 13 July 2010 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 July 2015", "display_label": "", "display_hook": null, "row_label": "Windows Server 2003 R2", "publisher_short": null, "geography": "Worldwide", "period": "2015-07-14", "population": "Windows Server 2003 R2, all editions (Datacenter, Enterprise and Standard editions (32-bit and x64))", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2003 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-10-25", "accessed_at": "2026-10-14", "quote": "Windows Server 2003 R2 | 3/5/2006 8:00:00 AM | 7/14/2010 6:59:59 AM | 7/15/2015 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2003 R2' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Extended End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). Same end dates as Windows Server 2003: R2 was an update release and inherited the 2003 lifecycle, so it got about nine years of support rather than ten.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2003-r2-extended-end-2015-07-14", "citation_text": "Windows Server 2003 R2 reached the end of extended support on 14 July 2015, after mainstream support ended on 13 July 2010 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2003 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2003-r2-extended-end-2015-07-14." }, { "id": "microsoft-lifecycle-windows-server-2008-release-2008-05-06", "family": "lifecycle-dates-esu", "statement": "Windows Server 2008 was released on 6 May 2008, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "6 May 2008", "display_label": "", "display_hook": null, "row_label": "Windows Server 2008", "publisher_short": null, "geography": "Worldwide", "period": "2008-05-06", "population": "Windows Server 2008, all editions (Datacenter, Enterprise, Standard, Web, Foundation and Itanium editions (with and without Hyper-V))", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2008 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Windows Server 2008 | 5/6/2008 8:00:00 AM | 1/14/2015 6:59:59 AM | 1/15/2020 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2008' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Start Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). Page note: 'Windows Server 2008 Foundation released on May 21, 2009'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-release-2008-05-06", "citation_text": "Windows Server 2008 was released on 6 May 2008, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2022). Source: Microsoft, \"Windows Server 2008 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-release-2008-05-06." }, { "id": "microsoft-lifecycle-windows-server-2008-mainstream-end-2015-01-13", "family": "lifecycle-dates-esu", "statement": "Windows Server 2008 reached the end of mainstream support on 13 January 2015 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "13 January 2015", "display_label": "", "display_hook": null, "row_label": "Windows Server 2008", "publisher_short": null, "geography": "Worldwide", "period": "2015-01-13", "population": "Windows Server 2008, all editions (Datacenter, Enterprise, Standard, Web, Foundation and Itanium editions (with and without Hyper-V))", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2008 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Windows Server 2008 | 5/6/2008 8:00:00 AM | 1/14/2015 6:59:59 AM | 1/15/2020 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2008' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Mainstream End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-mainstream-end-2015-01-13", "citation_text": "Windows Server 2008 reached the end of mainstream support on 13 January 2015 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2008 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-mainstream-end-2015-01-13." }, { "id": "microsoft-lifecycle-windows-server-2008-extended-end-2020-01-14", "family": "lifecycle-dates-esu", "statement": "Windows Server 2008 reached the end of extended support on 14 January 2020, after mainstream support ended on 13 January 2015 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 January 2020", "display_label": "", "display_hook": null, "row_label": "Windows Server 2008", "publisher_short": null, "geography": "Worldwide", "period": "2020-01-14", "population": "Windows Server 2008, all editions (Datacenter, Enterprise, Standard, Web, Foundation and Itanium editions (with and without Hyper-V))", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2008 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Windows Server 2008 | 5/6/2008 8:00:00 AM | 1/14/2015 6:59:59 AM | 1/15/2020 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2008' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Extended End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). Extended Security Updates followed for three years (to 10 January 2023) plus a fourth year on Azure only (to 9 January 2024): see the ESU records. Aggregator note: endoflife.date's API (fetched 2026-10-14, saved as raw/lifecycle-dates-esu/endoflife-date-api-windows-server-2026-10-14.json) lists the cycle as '2008-sp2' with ESU ending 10 January 2023, omitting the Azure-only fourth year.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-extended-end-2020-01-14", "citation_text": "Windows Server 2008 reached the end of extended support on 14 January 2020, after mainstream support ended on 13 January 2015 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2008 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-extended-end-2020-01-14." }, { "id": "microsoft-lifecycle-windows-server-2008-r2-release-2009-10-22", "family": "lifecycle-dates-esu", "statement": "Windows Server 2008 R2 was released on 22 October 2009, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "22 October 2009", "display_label": "", "display_hook": null, "row_label": "Windows Server 2008 R2", "publisher_short": null, "geography": "Worldwide", "period": "2009-10-22", "population": "Windows Server 2008 R2, all editions (Datacenter, Enterprise, HPC, Itanium, Standard and Web editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Windows Server 2008 R2 | 10/22/2009 8:00:00 AM | 1/14/2015 6:59:59 AM | 1/15/2020 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2008 R2' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Start Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-r2-release-2009-10-22", "citation_text": "Windows Server 2008 R2 was released on 22 October 2009, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2022). Source: Microsoft, \"Windows Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-r2-release-2009-10-22." }, { "id": "microsoft-lifecycle-windows-server-2008-r2-mainstream-end-2015-01-13", "family": "lifecycle-dates-esu", "statement": "Windows Server 2008 R2 reached the end of mainstream support on 13 January 2015 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "13 January 2015", "display_label": "", "display_hook": null, "row_label": "Windows Server 2008 R2", "publisher_short": null, "geography": "Worldwide", "period": "2015-01-13", "population": "Windows Server 2008 R2, all editions (Datacenter, Enterprise, HPC, Itanium, Standard and Web editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Windows Server 2008 R2 | 10/22/2009 8:00:00 AM | 1/14/2015 6:59:59 AM | 1/15/2020 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2008 R2' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Mainstream End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-r2-mainstream-end-2015-01-13", "citation_text": "Windows Server 2008 R2 reached the end of mainstream support on 13 January 2015 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-r2-mainstream-end-2015-01-13." }, { "id": "microsoft-lifecycle-windows-server-2008-r2-extended-end-2020-01-14", "family": "lifecycle-dates-esu", "statement": "Windows Server 2008 R2 reached the end of extended support on 14 January 2020, after mainstream support ended on 13 January 2015 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 January 2020", "display_label": "", "display_hook": null, "row_label": "Windows Server 2008 R2", "publisher_short": null, "geography": "Worldwide", "period": "2020-01-14", "population": "Windows Server 2008 R2, all editions (Datacenter, Enterprise, HPC, Itanium, Standard and Web editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Windows Server 2008 R2 | 10/22/2009 8:00:00 AM | 1/14/2015 6:59:59 AM | 1/15/2020 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2008 R2' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Extended End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). ESU followed for three years plus an Azure-only fourth year (see ESU records). Aggregator note: endoflife.date's API (fetched 2026-10-14, saved as raw/lifecycle-dates-esu/endoflife-date-api-windows-server-2026-10-14.json) lists the cycle as '2008-r2-sp1' (release 22 February 2011, the SP1 date) with ESU ending 10 January 2023, omitting the Azure-only fourth year.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-r2-extended-end-2020-01-14", "citation_text": "Windows Server 2008 R2 reached the end of extended support on 14 January 2020, after mainstream support ended on 13 January 2015 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-r2-extended-end-2020-01-14." }, { "id": "microsoft-lifecycle-windows-server-2012-release-2012-10-30", "family": "lifecycle-dates-esu", "statement": "Windows Server 2012 was released on 30 October 2012, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "30 October 2012", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012", "publisher_short": null, "geography": "Worldwide", "period": "2012-10-30", "population": "Windows Server 2012, all editions (Datacenter, Essentials, External Connector, Embedded, Foundation and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012", "source_type": "primary", "source_access": "open", "published_at": "2024-09-17", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 | 10/30/2012 8:00:00 AM | 10/10/2018 6:59:59 AM | 10/11/2023 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2012' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Start Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-release-2012-10-30", "citation_text": "Windows Server 2012 was released on 30 October 2012, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2024). Source: Microsoft, \"Windows Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-release-2012-10-30." }, { "id": "microsoft-lifecycle-windows-server-2012-mainstream-end-2018-10-09", "family": "lifecycle-dates-esu", "statement": "Windows Server 2012 reached the end of mainstream support on 9 October 2018 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "9 October 2018", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012", "publisher_short": null, "geography": "Worldwide", "period": "2018-10-09", "population": "Windows Server 2012, all editions (Datacenter, Essentials, External Connector, Embedded, Foundation and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012", "source_type": "primary", "source_access": "open", "published_at": "2024-09-17", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 | 10/30/2012 8:00:00 AM | 10/10/2018 6:59:59 AM | 10/11/2023 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2012' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Mainstream End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). Page note: 'Mainstream and Extended support for this product has been extended to provide customers with the standard lifecycle transition timeline.'", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-mainstream-end-2018-10-09", "citation_text": "Windows Server 2012 reached the end of mainstream support on 9 October 2018 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-mainstream-end-2018-10-09." }, { "id": "microsoft-lifecycle-windows-server-2012-extended-end-2023-10-10", "family": "lifecycle-dates-esu", "statement": "Windows Server 2012 reached the end of extended support on 10 October 2023, after mainstream support ended on 9 October 2018 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "10 October 2023", "display_label": "Microsoft lifecycle page; three paid ESU years followed", "display_hook": null, "row_label": "Windows Server 2012", "publisher_short": null, "geography": "Worldwide", "period": "2023-10-10", "population": "Windows Server 2012, all editions (Datacenter, Essentials, External Connector, Embedded, Foundation and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012", "source_type": "primary", "source_access": "open", "published_at": "2024-09-17", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 | 10/30/2012 8:00:00 AM | 10/10/2018 6:59:59 AM | 10/11/2023 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2012' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Extended End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). Microsoft's ESU overview and FAQ say the same in prose: 'Windows Server 2012 and 2012 R2 Extended Support ended on October 10, 2023.' Three paid ESU years followed, ending 13 October 2026.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-extended-end-2023-10-10", "citation_text": "Windows Server 2012 reached the end of extended support on 10 October 2023, after mainstream support ended on 9 October 2018 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-extended-end-2023-10-10." }, { "id": "microsoft-lifecycle-windows-server-2012-r2-release-2013-11-25", "family": "lifecycle-dates-esu", "statement": "Windows Server 2012 R2 was released on 25 November 2013, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "25 November 2013", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012 R2", "publisher_short": null, "geography": "Worldwide", "period": "2013-11-25", "population": "Windows Server 2012 R2, all editions (Datacenter, Essentials, Embedded, Foundation and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2", "source_type": "primary", "source_access": "open", "published_at": "2023-01-17", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 R2 | 11/25/2013 8:00:00 AM | 10/10/2018 6:59:59 AM | 10/11/2023 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2012 R2' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Start Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-r2-release-2013-11-25", "citation_text": "Windows Server 2012 R2 was released on 25 November 2013, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2023). Source: Microsoft, \"Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-r2-release-2013-11-25." }, { "id": "microsoft-lifecycle-windows-server-2012-r2-mainstream-end-2018-10-09", "family": "lifecycle-dates-esu", "statement": "Windows Server 2012 R2 reached the end of mainstream support on 9 October 2018 (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "9 October 2018", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012 R2", "publisher_short": null, "geography": "Worldwide", "period": "2018-10-09", "population": "Windows Server 2012 R2, all editions (Datacenter, Essentials, Embedded, Foundation and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2", "source_type": "primary", "source_access": "open", "published_at": "2023-01-17", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 R2 | 11/25/2013 8:00:00 AM | 10/10/2018 6:59:59 AM | 10/11/2023 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2012 R2' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Mainstream End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). Page note: 'Mainstream and Extended support for this product has been extended to provide customers with the standard lifecycle transition timeline.' R2 shares Windows Server 2012's end dates, so it got under ten years before ESU.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-r2-mainstream-end-2018-10-09", "citation_text": "Windows Server 2012 R2 reached the end of mainstream support on 9 October 2018 (Microsoft, 2023). Source: Microsoft, \"Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-r2-mainstream-end-2018-10-09." }, { "id": "microsoft-lifecycle-windows-server-2012-r2-extended-end-2023-10-10", "family": "lifecycle-dates-esu", "statement": "Windows Server 2012 R2 reached the end of extended support on 10 October 2023, after mainstream support ended on 9 October 2018 (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "10 October 2023", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012 R2", "publisher_short": null, "geography": "Worldwide", "period": "2023-10-10", "population": "Windows Server 2012 R2, all editions (Datacenter, Essentials, Embedded, Foundation and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2", "source_type": "primary", "source_access": "open", "published_at": "2023-01-17", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 R2 | 11/25/2013 8:00:00 AM | 10/10/2018 6:59:59 AM | 10/11/2023 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2012 R2' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Extended End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). Three paid ESU years followed, ending 13 October 2026 (the day before this collection).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-r2-extended-end-2023-10-10", "citation_text": "Windows Server 2012 R2 reached the end of extended support on 10 October 2023, after mainstream support ended on 9 October 2018 (Microsoft, 2023). Source: Microsoft, \"Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-r2-extended-end-2023-10-10." }, { "id": "microsoft-lifecycle-windows-server-2016-release-2016-10-15", "family": "lifecycle-dates-esu", "statement": "Windows Server 2016 was released on 15 October 2016, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "15 October 2016", "display_label": "", "display_hook": null, "row_label": "Windows Server 2016", "publisher_short": null, "geography": "Worldwide", "period": "2016-10-15", "population": "Windows Server 2016, all editions (Datacenter, Essentials, MultiPoint Premium and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2016", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2016 | 10/15/2016 8:00:00 AM | 1/12/2022 6:59:59 AM | 1/13/2027 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2016' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Start Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2016-release-2016-10-15", "citation_text": "Windows Server 2016 was released on 15 October 2016, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2024). Source: Microsoft, \"Windows Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2016). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2016-release-2016-10-15." }, { "id": "microsoft-lifecycle-windows-server-2016-mainstream-end-2022-01-11", "family": "lifecycle-dates-esu", "statement": "Windows Server 2016 reached the end of mainstream support on 11 January 2022 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "11 January 2022", "display_label": "", "display_hook": null, "row_label": "Windows Server 2016", "publisher_short": null, "geography": "Worldwide", "period": "2022-01-11", "population": "Windows Server 2016, all editions (Datacenter, Essentials, MultiPoint Premium and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2016", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2016 | 10/15/2016 8:00:00 AM | 1/12/2022 6:59:59 AM | 1/13/2027 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2016' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Mainstream End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2016-mainstream-end-2022-01-11", "citation_text": "Windows Server 2016 reached the end of mainstream support on 11 January 2022 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2016). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2016-mainstream-end-2022-01-11." }, { "id": "microsoft-lifecycle-windows-server-2016-extended-end-2027-01-12", "family": "lifecycle-dates-esu", "statement": "Windows Server 2016 reaches the end of extended support on 12 January 2027, after mainstream support ended on 11 January 2022 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "12 January 2027", "display_label": "Microsoft lifecycle page; 90 days after 14 October 2026", "display_hook": null, "row_label": "Windows Server 2016", "publisher_short": null, "geography": "Worldwide", "period": "2027-01-12", "population": "Windows Server 2016, all editions (Datacenter, Essentials, MultiPoint Premium and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2016", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2016 | 10/15/2016 8:00:00 AM | 1/12/2022 6:59:59 AM | 1/13/2027 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2016' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Extended End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). Prose confirmation: Microsoft's end-of-support-2027 list gives 'Windows Server 2016 ... January 12, 2027', and the Windows Server blog (25 February 2026): 'extended support for Windows Server 2016 will end on January 12, 2027'. As of 2026-10-14 the lifecycle page shows no ESU rows yet; ESU through Azure Arc was announced on 25 February 2026 (see the ESU records). Aggregator note: the page brief says one aggregator gives 11 January 2027 (the restatements-and-aggregators family records it); endoflife.date matches Microsoft (12 January 2027) but adds an ESU end of 12 January 2030, a day Microsoft has not published ('through 2030').", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2016-extended-end-2027-01-12", "citation_text": "Windows Server 2016 reaches the end of extended support on 12 January 2027, after mainstream support ended on 11 January 2022 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2016). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2016-extended-end-2027-01-12." }, { "id": "microsoft-lifecycle-windows-server-2019-release-2018-11-13", "family": "lifecycle-dates-esu", "statement": "Windows Server 2019 was released on 13 November 2018, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "13 November 2018", "display_label": "", "display_hook": null, "row_label": "Windows Server 2019", "publisher_short": null, "geography": "Worldwide", "period": "2018-11-13", "population": "Windows Server 2019, all editions (Datacenter, Essentials and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2019", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2019 | 11/13/2018 8:00:00 AM | 1/10/2024 6:59:59 AM | 1/10/2029 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2019' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Start Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). Page note: 'Windows Server 2019 and Windows Server, version 1809 were re-released on Nov 13, 2018. Support dates have been adjusted accordingly.' (The original October 2018 release was pulled.)", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2019-release-2018-11-13", "citation_text": "Windows Server 2019 was released on 13 November 2018, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2024). Source: Microsoft, \"Windows Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2019). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2019-release-2018-11-13." }, { "id": "microsoft-lifecycle-windows-server-2019-mainstream-end-2024-01-09", "family": "lifecycle-dates-esu", "statement": "Windows Server 2019 reached the end of mainstream support on 9 January 2024 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "9 January 2024", "display_label": "", "display_hook": null, "row_label": "Windows Server 2019", "publisher_short": null, "geography": "Worldwide", "period": "2024-01-09", "population": "Windows Server 2019, all editions (Datacenter, Essentials and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2019", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2019 | 11/13/2018 8:00:00 AM | 1/10/2024 6:59:59 AM | 1/10/2029 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2019' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Mainstream End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2019-mainstream-end-2024-01-09", "citation_text": "Windows Server 2019 reached the end of mainstream support on 9 January 2024 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2019). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2019-mainstream-end-2024-01-09." }, { "id": "microsoft-lifecycle-windows-server-2019-extended-end-2029-01-09", "family": "lifecycle-dates-esu", "statement": "Windows Server 2019 reaches the end of extended support on 9 January 2029, after mainstream support ended on 9 January 2024 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "9 January 2029", "display_label": "", "display_hook": null, "row_label": "Windows Server 2019", "publisher_short": null, "geography": "Worldwide", "period": "2029-01-09", "population": "Windows Server 2019, all editions (Datacenter, Essentials and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2019", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2019 | 11/13/2018 8:00:00 AM | 1/10/2024 6:59:59 AM | 1/10/2029 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2019' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Extended End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2019-extended-end-2029-01-09", "citation_text": "Windows Server 2019 reaches the end of extended support on 9 January 2029, after mainstream support ended on 9 January 2024 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2019). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2019-extended-end-2029-01-09." }, { "id": "microsoft-lifecycle-windows-server-2022-release-2021-08-18", "family": "lifecycle-dates-esu", "statement": "Windows Server 2022 was released on 18 August 2021, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "18 August 2021", "display_label": "", "display_hook": null, "row_label": "Windows Server 2022", "publisher_short": null, "geography": "Worldwide", "period": "2021-08-18", "population": "Windows Server 2022, all editions (Datacenter, Datacenter: Azure Edition, Essentials and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2022 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2022", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2022 | 8/18/2021 8:00:00 AM | 10/14/2026 6:59:59 AM | 10/15/2031 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2022' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Start Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2022-release-2021-08-18", "citation_text": "Windows Server 2022 was released on 18 August 2021, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2024). Source: Microsoft, \"Windows Server 2022 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2022). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2022-release-2021-08-18." }, { "id": "microsoft-lifecycle-windows-server-2022-mainstream-end-2026-10-13", "family": "lifecycle-dates-esu", "statement": "Windows Server 2022 reached the end of mainstream support on 13 October 2026 and is now in extended support (security updates only) until 14 October 2031 (Microsoft, 2024).", "short_statement": "Windows Server 2022 left mainstream support on 13 October 2026 and gets security updates only until **14 October 2031**.", "short_refs": null, "value": null, "unit": "date", "display_value": "13 October 2026", "display_label": "13 October 2026, the same day Windows Server 2012's paid ESU ended (Microsoft lifecycle page)", "display_hook": null, "row_label": "Windows Server 2022", "publisher_short": null, "geography": "Worldwide", "period": "2026-10-13", "population": "Windows Server 2022, all editions (Datacenter, Datacenter: Azure Edition, Essentials and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2022 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2022", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2022 | 8/18/2021 8:00:00 AM | 10/14/2026 6:59:59 AM | 10/15/2031 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2022' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Mainstream End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists). Prose confirmation: Microsoft's end-of-support-2026 list names 'Windows Server 2022' and 'Windows Server 2022 Datacenter: Azure Edition' under 'Products moving to Extended Support'. Page note: 'Hotpatching is supported on Windows Server 2022 Datacenter: Azure Edition Core through the end of Mainstream Support.' Mainstream ended the same day as Windows Server 2012's last paid ESU year.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2022-mainstream-end-2026-10-13", "citation_text": "Windows Server 2022 reached the end of mainstream support on 13 October 2026 and is now in extended support (security updates only) until 14 October 2031 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2022 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2022). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2022-mainstream-end-2026-10-13." }, { "id": "microsoft-lifecycle-windows-server-2022-extended-end-2031-10-14", "family": "lifecycle-dates-esu", "statement": "Windows Server 2022 reaches the end of extended support on 14 October 2031, after mainstream support ended on 13 October 2026 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 October 2031", "display_label": "", "display_hook": null, "row_label": "Windows Server 2022", "publisher_short": null, "geography": "Worldwide", "period": "2031-10-14", "population": "Windows Server 2022, all editions (Datacenter, Datacenter: Azure Edition, Essentials and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2022 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2022", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2022 | 8/18/2021 8:00:00 AM | 10/14/2026 6:59:59 AM | 10/15/2031 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2022' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Extended End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2022-extended-end-2031-10-14", "citation_text": "Windows Server 2022 reaches the end of extended support on 14 October 2031, after mainstream support ended on 13 October 2026 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2022 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2022). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2022-extended-end-2031-10-14." }, { "id": "microsoft-lifecycle-windows-server-2025-release-2024-11-01", "family": "lifecycle-dates-esu", "statement": "Windows Server 2025 was released on 1 November 2024, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "1 November 2024", "display_label": "", "display_hook": null, "row_label": "Windows Server 2025", "publisher_short": null, "geography": "Worldwide", "period": "2024-11-01", "population": "Windows Server 2025, all editions (Datacenter, Datacenter: Azure Edition, Essentials and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-11-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2025", "source_type": "primary", "source_access": "open", "published_at": "2024-11-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2025 | 11/1/2024 8:00:00 AM | 11/14/2029 6:59:59 AM | 11/15/2034 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2025' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Start Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2025-release-2024-11-01", "citation_text": "Windows Server 2025 was released on 1 November 2024, the lifecycle start date on Microsoft's lifecycle page (Microsoft, 2024). Source: Microsoft, \"Windows Server 2025 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-11-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2025). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2025-release-2024-11-01." }, { "id": "microsoft-lifecycle-windows-server-2025-mainstream-end-2029-11-13", "family": "lifecycle-dates-esu", "statement": "Windows Server 2025 reaches the end of mainstream support on 13 November 2029 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "13 November 2029", "display_label": "", "display_hook": null, "row_label": "Windows Server 2025", "publisher_short": null, "geography": "Worldwide", "period": "2029-11-13", "population": "Windows Server 2025, all editions (Datacenter, Datacenter: Azure Edition, Essentials and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-11-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2025", "source_type": "primary", "source_access": "open", "published_at": "2024-11-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2025 | 11/1/2024 8:00:00 AM | 11/14/2029 6:59:59 AM | 11/15/2034 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2025' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Mainstream End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2025-mainstream-end-2029-11-13", "citation_text": "Windows Server 2025 reaches the end of mainstream support on 13 November 2029 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2025 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-11-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2025). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2025-mainstream-end-2029-11-13." }, { "id": "microsoft-lifecycle-windows-server-2025-extended-end-2034-11-14", "family": "lifecycle-dates-esu", "statement": "Windows Server 2025 reaches the end of extended support on 14 November 2034, after mainstream support ends on 13 November 2029 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 November 2034", "display_label": "", "display_hook": null, "row_label": "Windows Server 2025", "publisher_short": null, "geography": "Worldwide", "period": "2034-11-14", "population": "Windows Server 2025, all editions (Datacenter, Datacenter: Azure Edition, Essentials and Standard editions)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-11-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2025", "source_type": "primary", "source_access": "open", "published_at": "2024-11-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2025 | 11/1/2024 8:00:00 AM | 11/14/2029 6:59:59 AM | 11/15/2034 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2025' (transcribed with pipes from the HTML datetime attributes: Start Date | Mainstream End Date | Extended End Date), Extended End Date column", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2025-extended-end-2034-11-14", "citation_text": "Windows Server 2025 reaches the end of extended support on 14 November 2034, after mainstream support ends on 13 November 2029 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2025 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-11-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2025). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2025-extended-end-2034-11-14." }, { "id": "microsoft-lifecycle-windows-server-2008-r2-esu-year-3-end-2023-01-10", "family": "lifecycle-dates-esu", "statement": "Windows Server 2008 and 2008 R2 Extended Security Update Year 3, the last year available outside Azure, ended on 10 January 2023 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "10 January 2023", "display_label": "", "display_hook": null, "row_label": "Windows Server 2008 and 2008 R2: last ESU year outside Azure ended", "publisher_short": null, "geography": "Worldwide", "period": "2023-01-10", "population": "Windows Server 2008 R2 with Extended Security Updates", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Extended Security Update Year 3 | 1/12/2022 8:00:00 AM | 1/11/2023 6:59:59 AM", "locator": "Table 'Releases', row 'Extended Security Update Year 3' (transcribed with pipes: Version | Start Date | End Date)", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-esu-dates", "history": [], "notes": "Year 1 ran 15 January 2020 to 12 January 2021 (row: 1/15/2020 8:00:00 AM | 1/13/2021 6:59:59 AM) and Year 2 to 11 January 2022 (1/12/2022 6:59:59 AM). The Windows Server 2008 lifecycle page carries identical ESU rows. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-r2-esu-year-3-end-2023-01-10", "citation_text": "Windows Server 2008 and 2008 R2 Extended Security Update Year 3, the last year available outside Azure, ended on 10 January 2023 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-r2-esu-year-3-end-2023-01-10." }, { "id": "microsoft-lifecycle-windows-server-2008-r2-esu-year-4-azure-ended-2024-01-10", "family": "lifecycle-dates-esu", "statement": "4 years of Extended Security Updates followed Windows Server 2008 R2's 14 January 2020 end of extended support: three for any customer (to 10 January 2023) and a fourth on Azure only (to 9 January 2024), per Microsoft's lifecycle page (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": 4, "unit": "years of Extended Security Updates after end of extended support (Windows Server 2008 R2, including the Azure-only year)", "display_value": "4 years", "display_label": "Windows Server 2008 R2, January 2020 to January 2024 (Microsoft lifecycle page)", "display_hook": null, "row_label": "Windows Server 2008 R2: ESU years in all, the fourth on Azure only", "publisher_short": null, "geography": "Worldwide", "period": "2020-01-14 to 2024-01-09", "population": "Windows Server 2008 R2 with Extended Security Updates", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Extended Security Update Year 4 (Azure only) | 1/11/2023 8:00:00 AM | 1/10/2024 6:59:59 AM", "locator": "Table 'Releases', row 'Extended Security Update Year 4 (Azure only)' (transcribed with pipes: Version | Start Date | End Date)", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-esu-dates", "history": [], "notes": "Reused id from page 2 (data-migration-failure-rate), re-fetched and re-quoted. CORRECTION: page 2's statement gave the Azure-only year's end as 10 January 2024; the page's timestamp 1/10/2024 6:59:59 AM is UTC and renders as 9 January 2024 Pacific, and Microsoft's end-of-support-2024 list says 'Windows Server 2008 R2, Extended Security Update Year 4 (Azure only) ... January 9, 2024' (saved: end-of-support-2024.html). The id keeps its old date suffix for continuity; the statement uses 9 January 2024. Windows Server 2008 has identical rows. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-r2-esu-year-4-azure-ended-2024-01-10", "citation_text": "4 years of Extended Security Updates followed Windows Server 2008 R2's 14 January 2020 end of extended support: three for any customer (to 10 January 2023) and a fourth on Azure only (to 9 January 2024), per Microsoft's lifecycle page (Microsoft, 2022). Source: Microsoft, \"Windows Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2008-r2-esu-year-4-azure-ended-2024-01-10." }, { "id": "microsoft-lifecycle-windows-server-2012-r2-esu-year-3-end-2026-10-13", "family": "lifecycle-dates-esu", "statement": "Windows Server 2012 and 2012 R2 Extended Security Update Year 3, the last paid year, ended on 13 October 2026 (Microsoft, 2023).", "short_statement": "Windows Server 2012 and 2012 R2 lost their last paid security updates on **13 October 2026**.", "short_refs": null, "value": null, "unit": "date", "display_value": "13 October 2026", "display_label": "end of ESU Year 3 (Microsoft lifecycle page); no fourth year offered", "display_hook": null, "row_label": "Windows Server 2012 and 2012 R2: last paid ESU year ended", "publisher_short": null, "geography": "Worldwide", "period": "2026-10-13", "population": "Windows Server 2012 and 2012 R2 with Extended Security Updates", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2", "source_type": "primary", "source_access": "open", "published_at": "2023-01-17", "accessed_at": "2026-10-14", "quote": "Extended Security Update Year 3 | 10/15/2025 8:00:00 AM | 10/14/2026 6:59:59 AM", "locator": "Table 'Releases', row 'Extended Security Update Year 3' (transcribed with pipes: Version | Start Date | End Date)", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-esu-dates", "history": [], "notes": "The Windows Server 2012 page has identical rows: Year 1 10/11/2023 to 10/9/2024 (8 October 2024 Pacific), Year 2 to 10/15/2025 (14 October 2025), Year 3 to 10/14/2026 (13 October 2026). Prose confirmation: Microsoft's end-of-support-2026 list names 'Windows Server 2012, Extended Security Update Year 3' and 'Windows Server 2012 R2, Extended Security Update Year 3' under October 13, 2026; the ESU product page reads 'Oct 13, 2026 Windows Server 2012 Extended Security Updates end.' No further ESU year is offered. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-r2-esu-year-3-end-2026-10-13", "citation_text": "Windows Server 2012 and 2012 R2 Extended Security Update Year 3, the last paid year, ended on 13 October 2026 (Microsoft, 2023). Source: Microsoft, \"Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-r2-esu-year-3-end-2026-10-13." }, { "id": "microsoft-2025-10-lifecycle-faq-esu-on-premises-price-100pct-of-licence-each-year", "family": "lifecycle-dates-esu", "statement": "100% of the full Windows Server licence price per year was Microsoft's on-premises ESU price for Windows Server 2012 and 2012 R2 in each of the three ESU years, against no extra charge for servers moved to Azure (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 100, "unit": "% of full Windows Server licence price per ESU year (on-premises and hosted)", "display_value": "100% per year", "display_label": "Microsoft lifecycle FAQ, ESU pricing for Windows Server 2012 and 2012 R2 (free on Azure)", "display_hook": null, "row_label": "Windows Server 2012, Microsoft's lifecycle FAQ in 2026", "publisher_short": null, "geography": "Worldwide", "period": "2023-10 to 2026-10", "population": "Microsoft's Extended Security Update terms for Windows Server 2012 and 2012 R2 (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-08-24", "accessed_at": "2026-10-14", "quote": "Year 1: 100% of full license price annually Year 2: 100% of full license price annually Year 3: 100% of full license price annually", "locator": "Section 'Pricing', subsection 'On-premises and in hosted environments'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Reused id from page 2, re-fetched and re-quoted. Same section: 'Full License price is the equivalent to a License-only purchase and not the License portion of an L+SA contract.' Three ESU years therefore cost three full licences. This flat rule replaced the 75%/100%/125% schedule Microsoft first published for 2012 ESU (see the price-history records); both add up to 300%. The page shows 'Last updated on 2026-08-24' (ms.date meta 2025-10-17); page 2 quoted the same text in its 2025-10 version, hence the reused id's date.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-10-lifecycle-faq-esu-on-premises-price-100pct-of-licence-each-year", "citation_text": "100% of the full Windows Server licence price per year was Microsoft's on-premises ESU price for Windows Server 2012 and 2012 R2 in each of the three ESU years, against no extra charge for servers moved to Azure (Microsoft, 2026). Source: Microsoft, \"Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)\" (https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-10-lifecycle-faq-esu-on-premises-price-100pct-of-licence-each-year." }, { "id": "microsoft-2025-10-lifecycle-faq-esu-windows-server-2012-year-end-dates", "family": "lifecycle-dates-esu", "statement": "3 yearly ESU windows for Windows Server 2012 and 2012 R2 ended on 8 October 2024, 14 October 2025 and 13 October 2026, each needing the prior year's licence, per Microsoft's lifecycle FAQ (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 3, "unit": "annual ESU coverage periods (Windows Server 2012/R2)", "display_value": "3 windows", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012 and 2012 R2: yearly ESU windows", "publisher_short": null, "geography": "Worldwide", "period": "2023-10-10 to 2026-10-13", "population": "Microsoft's ESU availability table (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-08-24", "accessed_at": "2026-10-14", "quote": "Windows Server 2012/R2 | October 10, 2023 | October 8, 2024 | October 14, 2025 | October 13, 2026 | Critical, Important", "locator": "Table 'ESU Availability and End Dates', row Windows Server 2012/R2 (transcribed with pipes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-esu-dates", "history": [], "notes": "Reused id from page 2, re-fetched and re-quoted. The same table lists Windows 10 ESU (14 October 2025 to 10 October 2028); Windows Server 2016 is not in it as of 2026-10-14. The page shows 'Last updated on 2026-08-24' (ms.date meta 2025-10-17); page 2 quoted the same text in its 2025-10 version, hence the reused id's date.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-10-lifecycle-faq-esu-windows-server-2012-year-end-dates", "citation_text": "3 yearly ESU windows for Windows Server 2012 and 2012 R2 ended on 8 October 2024, 14 October 2025 and 13 October 2026, each needing the prior year's licence, per Microsoft's lifecycle FAQ (Microsoft, 2026). Source: Microsoft, \"Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)\" (https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-10-lifecycle-faq-esu-windows-server-2012-year-end-dates." }, { "id": "microsoft-2025-10-lifecycle-faq-esu-windows-server-2008-one-additional-year-azure-only", "family": "lifecycle-dates-esu", "statement": "1 additional ESU year beyond the usual three was offered for Windows Server 2008 and 2008 R2, only on Azure, per Microsoft's lifecycle FAQ (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 1, "unit": "additional ESU year (Windows Server 2008/R2, Azure only)", "display_value": "+1 year on Azure", "display_label": "", "display_hook": null, "row_label": "Windows Server 2008 and 2008 R2: extra year, Azure only", "publisher_short": null, "geography": "Worldwide", "period": "2023-01 to 2024-01", "population": "Microsoft's ESU terms for Windows Server 2008 and 2008 R2 (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-08-24", "accessed_at": "2026-10-14", "quote": "One additional year of ESU is available for Windows Server 2008 and 2008 R2 only on Azure.", "locator": "Footnote ** under the table 'ESU Availability and End Dates'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Reused id from page 2, re-fetched and re-quoted. The fourth year ran 11 January 2023 to 9 January 2024 (Windows Server 2008 R2 lifecycle page). No extra Azure year was offered for Windows Server 2012/R2. The page shows 'Last updated on 2026-08-24' (ms.date meta 2025-10-17); page 2 quoted the same text in its 2025-10 version, hence the reused id's date.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-10-lifecycle-faq-esu-windows-server-2008-one-additional-year-azure-only", "citation_text": "1 additional ESU year beyond the usual three was offered for Windows Server 2008 and 2008 R2, only on Azure, per Microsoft's lifecycle FAQ (Microsoft, 2026). Source: Microsoft, \"Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)\" (https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-10-lifecycle-faq-esu-windows-server-2008-one-additional-year-azure-only." }, { "id": "microsoft-2025-06-esu-windows-server-2012-three-years-ending-2026-10-13", "family": "lifecycle-dates-esu", "statement": "3 years of paid Extended Security Updates were offered for Windows Server 2012 and 2012 R2 after their 10 October 2023 end of extended support, ending 13 October 2026 both in Azure (free) and outside it (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 3, "unit": "years of Extended Security Updates after end of extended support (Windows Server 2012/R2)", "display_value": "3 years", "display_label": "Microsoft Extended Security Updates terms for Windows Server 2012 and 2012 R2 (Microsoft Learn)", "display_hook": null, "row_label": "Windows Server 2012 and 2012 R2: paid ESU years after October 2023", "publisher_short": null, "geography": "Worldwide", "period": "2023-10-10 to 2026-10-13", "population": "Microsoft's Extended Security Update terms for Windows Server 2012 and 2012 R2 (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Extended Security Updates for Windows Server overview (Microsoft Learn, ms.date 2025-06-05)", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/extended-security-updates-overview", "source_type": "primary", "source_access": "open", "published_at": "2025-06-05", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 Windows Server 2012 R2 | Not in Azure | Three years | October 13, 2026", "locator": "Table 'Extended Security Update duration for each version of Windows Server', second row (transcribed with pipes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-esu-dates", "history": [], "notes": "Reused id from page 2, re-fetched and re-quoted. The first row gives the same three years and end date for 'Azure*' (including the Azure Stack portfolio). The page: 'Extended support for Windows Server 2012 and Windows Server 2012 R2 ended on October 10, 2023.' Unlike 2008/R2, no fourth Azure-only year.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-06-esu-windows-server-2012-three-years-ending-2026-10-13", "citation_text": "3 years of paid Extended Security Updates were offered for Windows Server 2012 and 2012 R2 after their 10 October 2023 end of extended support, ending 13 October 2026 both in Azure (free) and outside it (Microsoft, 2025). Source: Microsoft, \"Extended Security Updates for Windows Server overview (Microsoft Learn, ms.date 2025-06-05)\" (https://learn.microsoft.com/en-us/windows-server/get-started/extended-security-updates-overview). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-06-esu-windows-server-2012-three-years-ending-2026-10-13." }, { "id": "microsoft-2025-06-esu-overview-windows-server-ltsc-minimum-10-years-support", "family": "lifecycle-dates-esu", "statement": "10 years is the minimum support life of a Windows Server Long-Term Servicing Channel release (five years mainstream, five extended) before any ESU, per Microsoft's ESU overview (Microsoft, 2025).", "short_statement": "Every Long-Term Servicing Channel release gets at least **10 years** of support, five mainstream and five extended.", "short_refs": null, "value": 10, "unit": "years of standard support per Windows Server LTSC release (minimum)", "display_value": "10 years", "display_label": "", "display_hook": null, "row_label": "Any Long-Term Servicing Channel release: minimum support before ESU", "publisher_short": null, "geography": "Worldwide", "period": "2025", "population": "Microsoft's Windows Server lifecycle policy (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Extended Security Updates for Windows Server overview (Microsoft Learn, ms.date 2025-06-05)", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/extended-security-updates-overview", "source_type": "primary", "source_access": "open", "published_at": "2025-06-05", "accessed_at": "2026-10-14", "quote": "Windows Server Long Term Servicing Channel (LTSC) has a minimum of 10 years of support: five years for mainstream support and five years for extended support, which includes regular security updates.", "locator": "First paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Reused id from page 2, re-fetched and re-quoted. Microsoft's Windows lifecycle FAQ says the same: 'For Windows Server, the policy consists of five years of mainstream support followed by five years of extended support.' The derived years-of-support series shows releases from 9.4 years (2003 R2) to 12.1 years (2003) in practice.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-06-esu-overview-windows-server-ltsc-minimum-10-years-support", "citation_text": "10 years is the minimum support life of a Windows Server Long-Term Servicing Channel release (five years mainstream, five extended) before any ESU, per Microsoft's ESU overview (Microsoft, 2025). Source: Microsoft, \"Extended Security Updates for Windows Server overview (Microsoft Learn, ms.date 2025-06-05)\" (https://learn.microsoft.com/en-us/windows-server/get-started/extended-security-updates-overview). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-06-esu-overview-windows-server-ltsc-minimum-10-years-support." }, { "id": "microsoft-learn-arc-esu-2026-10-windows-server-2012-arc-esu-licences-deactivated-2026-10-14-utc", "family": "lifecycle-dates-esu", "statement": "Windows Server 2012 and 2012 R2 ESU licences bought through Azure Arc were deactivated at midnight UTC on 14 October 2026, after the final ESU update of 13 October 2026, and their billing ended (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 October 2026 (00:00 UTC)", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012: Azure Arc ESU licences deactivated", "publisher_short": null, "geography": "Worldwide", "period": "2026-10-14", "population": "Windows Server 2012 and 2012 R2 servers enrolled in ESUs enabled by Azure Arc", "sample_n": null, "publisher": "Microsoft", "source_title": "License provisioning guidelines for Extended Security Updates for Windows Server (Microsoft Learn, ms.date 2026-09-11, last updated 2026-10-05)", "source_url": "https://learn.microsoft.com/en-us/azure/azure-arc/servers/license-extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-09-11", "accessed_at": "2026-10-14", "quote": "The October 13, 2026 security update is the final update provided through ESUs. At midnight Coordinated Universal Time (UTC) on October 14, 2026, ESU licenses enabled by Azure Arc are deactivated and stop providing update eligibility.", "locator": "Section 'End of Windows Server 2012 ESU coverage'; the 'Prepare to deliver' page repeats it in its introduction", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-esu-dates", "history": [], "notes": "Same section: 'The license resources remain available to view in Azure. Billing for these licenses also ends.' Collected on 14 October 2026, the first day without coverage.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-arc-esu-2026-10-windows-server-2012-arc-esu-licences-deactivated-2026-10-14-utc", "citation_text": "Windows Server 2012 and 2012 R2 ESU licences bought through Azure Arc were deactivated at midnight UTC on 14 October 2026, after the final ESU update of 13 October 2026, and their billing ended (Microsoft, 2026). Source: Microsoft, \"License provisioning guidelines for Extended Security Updates for Windows Server (Microsoft Learn, ms.date 2026-09-11, last updated 2026-10-05)\" (https://learn.microsoft.com/en-us/azure/azure-arc/servers/license-extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-arc-esu-2026-10-windows-server-2012-arc-esu-licences-deactivated-2026-10-14-utc." }, { "id": "microsoft-wsblog-2026-02-25-windows-server-2016-extended-security-updates-announced-via-azure-arc", "family": "lifecycle-dates-esu", "statement": "Extended Security Updates for Windows Server 2016 were announced by Microsoft on 25 February 2026, delivered through Azure Arc for on-premises and multi-cloud servers, 321 days before its 12 January 2027 end of extended support (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "25 February 2026", "display_label": "", "display_hook": null, "row_label": "Windows Server 2016: ESU announced", "publisher_short": null, "geography": "Worldwide", "period": "2026-02-25", "population": "Windows Server 2016 customers (Microsoft announcement)", "sample_n": null, "publisher": "Microsoft", "source_title": "Planning ahead for Windows Server 2016 end of support (Microsoft Windows Server Blog)", "source_url": "https://www.microsoft.com/en-us/windows-server/blog/2026/02/25/planning-ahead-for-windows-server-2016-end-of-support/", "source_type": "primary", "source_access": "open", "published_at": "2026-02-25", "accessed_at": "2026-10-14", "quote": "Today, we are announcing Extended Security Updates for Windows Server 2016. Extended Security Updates for Windows Server 2016 deliver an enhanced cloud experience through Azure Arc.", "locator": "Section 'Plan for end of support', second and third paragraphs", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Same id and figure as the next-versions-adoption family's record (overlap rule: this family is listed first for ESU terms); re-quoted from this family's own copy. The post gives no price or on-premises percentage; the Arc per-core prices are in the Azure Retail Prices records. 321 days = 25 February 2026 to 12 January 2027. Post date from the page's datePublished (2026-02-25T16:00:00Z).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-wsblog-2026-02-25-windows-server-2016-extended-security-updates-announced-via-azure-arc", "citation_text": "Extended Security Updates for Windows Server 2016 were announced by Microsoft on 25 February 2026, delivered through Azure Arc for on-premises and multi-cloud servers, 321 days before its 12 January 2027 end of extended support (Microsoft, 2026). Source: Microsoft, \"Planning ahead for Windows Server 2016 end of support (Microsoft Windows Server Blog)\" (https://www.microsoft.com/en-us/windows-server/blog/2026/02/25/planning-ahead-for-windows-server-2016-end-of-support/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-wsblog-2026-02-25-windows-server-2016-extended-security-updates-announced-via-azure-arc." }, { "id": "microsoft-learn-arc-esu-2026-09-windows-server-2016-esu-up-to-three-years-through-2030", "family": "lifecycle-dates-esu", "statement": "3 years is the maximum Extended Security Updates term for Windows Server 2016 enabled by Azure Arc, covering Critical and Important security updates through 2030 after the 12 January 2027 end of support (Microsoft, 2026).", "short_statement": "Paid Extended Security Updates for Windows Server 2016 run for up to **3 years**, through 2030, and only through Azure Arc.", "short_refs": null, "value": 3, "unit": "years of Extended Security Updates after end of extended support (Windows Server 2016, maximum)", "display_value": "3 years (through 2030)", "display_label": "Microsoft Learn, Azure Arc ESU page; Critical and Important updates through 2030", "display_hook": null, "row_label": "Windows Server 2016: ESU term through Azure Arc", "publisher_short": null, "geography": "Worldwide", "period": "2027-01-13 to 2030-01", "population": "Windows Server 2016 Standard and Datacenter servers enrolled in ESUs enabled by Azure Arc", "sample_n": null, "publisher": "Microsoft", "source_title": "Prepare to deliver Extended Security Updates for Windows Server (Microsoft Learn, ms.date 2026-09-11, last updated 2026-10-05)", "source_url": "https://learn.microsoft.com/en-us/azure/azure-arc/servers/prepare-extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-09-11", "accessed_at": "2026-10-14", "quote": "Windows Server 2016 reaches end of support on January 12, 2027. Extended Security Updates for Windows Server 2016 provide Critical and Important security updates for up to three years, through 2030.", "locator": "Introduction, Windows Server 2016 tab", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-esu-dates", "history": [], "notes": "Same id and figure as the next-versions-adoption family's record; re-quoted from this family's copy. Microsoft has not published the exact 2030 end date; endoflife.date's 12 January 2030 is its own inference. Standard and Datacenter editions supported; Software Assurance, SPLA or a server subscription required (same page).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-arc-esu-2026-09-windows-server-2016-esu-up-to-three-years-through-2030", "citation_text": "3 years is the maximum Extended Security Updates term for Windows Server 2016 enabled by Azure Arc, covering Critical and Important security updates through 2030 after the 12 January 2027 end of support (Microsoft, 2026). Source: Microsoft, \"Prepare to deliver Extended Security Updates for Windows Server (Microsoft Learn, ms.date 2026-09-11, last updated 2026-10-05)\" (https://learn.microsoft.com/en-us/azure/azure-arc/servers/prepare-extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-arc-esu-2026-09-windows-server-2016-esu-up-to-three-years-through-2030." }, { "id": "microsoft-learn-arc-esu-2026-09-windows-server-2016-esu-portal-enrolment-2026-08-03-billing-2027-01-13", "family": "lifecycle-dates-esu", "statement": "Windows Server 2016 ESU enrolment opened in the Azure portal on 3 August 2026 and Azure Arc billing for it starts on 13 January 2027, the day after end of support (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "3 August 2026 (enrolment), 13 January 2027 (billing)", "display_label": "", "display_hook": null, "row_label": "Windows Server 2016: ESU enrolment opened and billing starts", "publisher_short": null, "geography": "Worldwide", "period": "2026-08-03", "population": "Windows Server 2016 servers enrolled in ESUs enabled by Azure Arc", "sample_n": null, "publisher": "Microsoft", "source_title": "Prepare to deliver Extended Security Updates for Windows Server (Microsoft Learn, ms.date 2026-09-11, last updated 2026-10-05)", "source_url": "https://learn.microsoft.com/en-us/azure/azure-arc/servers/prepare-extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-09-11", "accessed_at": "2026-10-14", "quote": "You can configure Windows Server 2016 ESUs in the Azure portal starting August 3, 2026. Billing for Windows Server 2016 ESUs enabled by Azure Arc begins January 13, 2027.", "locator": "Introduction, Windows Server 2016 tab; repeated under 'Prepare delivery of ESUs'", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-esu-dates", "history": [], "notes": "Same id and figure as the next-versions-adoption family's record. Azure Connected Machine agent 1.62 or higher is required for Windows Server 2016 ESU (1.34 for 2012). The ESU product page reads 'Jan 12, 2027 Windows Server 2016 Extended Support ends. Windows Server 2016 Extended Security Updates start.'", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-arc-esu-2026-09-windows-server-2016-esu-portal-enrolment-2026-08-03-billing-2027-01-13", "citation_text": "Windows Server 2016 ESU enrolment opened in the Azure portal on 3 August 2026 and Azure Arc billing for it starts on 13 January 2027, the day after end of support (Microsoft, 2026). Source: Microsoft, \"Prepare to deliver Extended Security Updates for Windows Server (Microsoft Learn, ms.date 2026-09-11, last updated 2026-10-05)\" (https://learn.microsoft.com/en-us/azure/azure-arc/servers/prepare-extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-arc-esu-2026-09-windows-server-2016-esu-portal-enrolment-2026-08-03-billing-2027-01-13." }, { "id": "microsoft-learn-arc-esu-2026-10-windows-server-2016-esu-no-free-disaster-recovery-or-dev-test-benefit", "family": "lifecycle-dates-esu", "statement": "No free disaster-recovery or Visual Studio dev/test coverage comes with Windows Server 2016 ESUs, two no-cost benefits that Windows Server 2012 ESUs included, so standby and test servers must be paid for (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "ESU terms (benefits withdrawn for Windows Server 2016)", "display_value": "0 free DR or dev/test servers", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026", "population": "Windows Server 2016 servers enrolled in ESUs enabled by Azure Arc", "sample_n": null, "publisher": "Microsoft", "source_title": "License provisioning guidelines for Extended Security Updates for Windows Server (Microsoft Learn, ms.date 2026-09-11, last updated 2026-10-05)", "source_url": "https://learn.microsoft.com/en-us/azure/azure-arc/servers/license-extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-09-11", "accessed_at": "2026-10-14", "quote": "The Visual Studio subscription benefit for dev/test scenarios isn't available for Windows Server 2016 ESUs. ... The no-cost disaster recovery benefit isn't available for Windows Server 2016 ESUs.", "locator": "Sections 'Visual Studio subscription benefit for dev/test scenarios' and 'Disaster recovery scenarios'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "For Windows Server 2012 the lifecycle FAQ says: 'With ESU enabled by Azure Arc, you can link paid ESU coverage to your eligible Disaster Recovery Benefit servers without incurring additional cost' and covers Visual Studio-licensed dev/test instances 'for no additional cost'. The same Arc page: 'To receive ESUs for Windows Server 2016 instances used for disaster recovery, purchase ESU coverage and include the cores for those instances in your provisioned Azure Arc ESU license.'", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-arc-esu-2026-10-windows-server-2016-esu-no-free-disaster-recovery-or-dev-test-benefit", "citation_text": "No free disaster-recovery or Visual Studio dev/test coverage comes with Windows Server 2016 ESUs, two no-cost benefits that Windows Server 2012 ESUs included, so standby and test servers must be paid for (Microsoft, 2026). Source: Microsoft, \"License provisioning guidelines for Extended Security Updates for Windows Server (Microsoft Learn, ms.date 2026-09-11, last updated 2026-10-05)\" (https://learn.microsoft.com/en-us/azure/azure-arc/servers/license-extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-arc-esu-2026-10-windows-server-2016-esu-no-free-disaster-recovery-or-dev-test-benefit." }, { "id": "microsoft-lifecycle-faq-esu-2026-08-free-on-azure-vms-avs-nutanix-azure-stack", "family": "lifecycle-dates-esu", "statement": "No additional charge applies to Windows Server 2012 and 2012 R2 Extended Security Updates in Azure virtual machines, Dedicated Host, Azure VMware Solution, Nutanix Cloud Clusters on Azure and the Azure Stack portfolio, beyond the cost of running the machine (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 0, "unit": "USD additional charge for ESU on Azure destinations", "display_value": "$0 on Azure", "display_label": "Azure VMs, Dedicated Host, Azure VMware Solution, Nutanix on Azure, Azure Stack (Microsoft lifecycle FAQ)", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10 to 2026-10", "population": "Microsoft's Extended Security Update terms for Windows Server 2012 and 2012 R2 (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-08-24", "accessed_at": "2026-10-14", "quote": "On Azure: Extended Security Updates are free for VMs in Azure. These include destinations such as Azure Virtual Machines (VMs), Dedicated Host, Azure VMware Solution, Nutanix Cloud Clusters on Azure, and the Azure Stack portfolio.", "locator": "Section 'How can I purchase ESUs?', first paragraph; repeated under 'Pricing' > 'On Azure'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Pricing section: 'for no additional charge above the cost of running the virtual machine'. 'For ESUs in Azure, Software Assurance is not required for free ESUs, but Software Assurance is required for Azure Hybrid Benefit.' The Windows Server ESU how-to page adds Azure Local (formerly Azure Stack HCI) and Azure Stack Hub and Edge. For SQL Server 2016 this no longer holds (see the SQL Server ESU records). The page shows 'Last updated on 2026-08-24' (ms.date meta 2025-10-17); page 2 quoted the same text in its 2025-10 version, hence the reused id's date.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-free-on-azure-vms-avs-nutanix-azure-stack", "citation_text": "No additional charge applies to Windows Server 2012 and 2012 R2 Extended Security Updates in Azure virtual machines, Dedicated Host, Azure VMware Solution, Nutanix Cloud Clusters on Azure and the Azure Stack portfolio, beyond the cost of running the machine (Microsoft, 2026). Source: Microsoft, \"Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)\" (https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-free-on-azure-vms-avs-nutanix-azure-stack." }, { "id": "microsoft-lifecycle-faq-esu-2026-08-critical-and-important-updates-up-to-three-years", "family": "lifecycle-dates-esu", "statement": "3 years is the maximum ESU coverage after end of support for Windows Server 2012 and 2012 R2, limited to security updates rated Critical and Important (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 3, "unit": "years of ESU coverage after end of support (maximum)", "display_value": "3 years, Critical and Important only", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10 to 2026-10", "population": "Microsoft's Extended Security Update terms for Windows Server 2012 and 2012 R2 (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-08-24", "accessed_at": "2026-10-14", "quote": "For Windows Server 2012/2012 R2: ESUs include provision of Security Updates and \"Security Update Severity Rating System\" rated \"critical\" and \"important,\" for a maximum of three years after end of support.", "locator": "Section 'What do ESUs include?'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The programme description: ESU 'is a last resort paid option' and 'not intended as a long-term solution, but rather as a temporary bridge'. Moderate and Low-rated fixes are not delivered. The page shows 'Last updated on 2026-08-24' (ms.date meta 2025-10-17); page 2 quoted the same text in its 2025-10 version, hence the reused id's date.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-critical-and-important-updates-up-to-three-years", "citation_text": "3 years is the maximum ESU coverage after end of support for Windows Server 2012 and 2012 R2, limited to security updates rated Critical and Important (Microsoft, 2026). Source: Microsoft, \"Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)\" (https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-critical-and-important-updates-up-to-three-years." }, { "id": "microsoft-lifecycle-faq-esu-2026-08-excludes-new-features-fixes-and-technical-support", "family": "lifecycle-dates-esu", "statement": "No new features, customer-requested non-security hotfixes, design changes or general technical support are included in Windows Server Extended Security Updates; support covers only ESU installation, activation and update regressions (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "ESU scope (exclusions)", "display_value": "Security updates only", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10 to 2026-10", "population": "Microsoft's Extended Security Update terms for Windows Server 2012 and 2012 R2 (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-08-24", "accessed_at": "2026-10-14", "quote": "ESUs do not include new features, customer-requested non-security hotfixes, or design change requests. ... No, technical support isn't included in the ESU program.", "locator": "Section 'What do ESUs include?' and section 'Is technical support included when you purchase ESUs?'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Same FAQ: 'If a customer has Windows Server 2012/2012 R2 without ESUs, they cannot log a support ticket, even if they have a support plan.' Support with a paid plan is limited to deployment and activation of ESU keys, regressions caused by an ESU, and known documented issues. The page shows 'Last updated on 2026-08-24' (ms.date meta 2025-10-17); page 2 quoted the same text in its 2025-10 version, hence the reused id's date.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-excludes-new-features-fixes-and-technical-support", "citation_text": "No new features, customer-requested non-security hotfixes, design changes or general technical support are included in Windows Server Extended Security Updates; support covers only ESU installation, activation and update regressions (Microsoft, 2026). Source: Microsoft, \"Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)\" (https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-excludes-new-features-fixes-and-technical-support." }, { "id": "microsoft-lifecycle-faq-esu-2026-08-prior-years-must-be-bought-to-join-late", "family": "lifecycle-dates-esu", "statement": "Every earlier ESU year had to be bought to join Windows Server 2012 ESU late: Year 2 and Year 3 licences required the prior years' licences, and late Azure Arc sign-ups were back-billed for each missed month (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "ESU purchase rule", "display_value": "All prior years required", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10 to 2026-10", "population": "Microsoft's Extended Security Update terms for Windows Server 2012 and 2012 R2 (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-08-24", "accessed_at": "2026-10-14", "quote": "You may only acquire ESU Year 2 and Year 3 licenses if you've also acquired the ESU license(s) for the prior year(s). ... No, organizations must purchase prior months/years of ESUs when onboarding late.", "locator": "Section 'Licensing with Extended Security Updates licenses (SKUs) through Commercial Licensing' > 'Prerequisites'; question 'Can I onboard later and buy just Year 2 of 2012 ESUs?'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Back-billing example from the same FAQ: 'if a customer enrolls in January 2024, they will receive a one-time back-bill for October, November, and December 2023 during their first month.' The Azure Arc pricing page states the same bill-back rule for Windows Server 2016 and SQL Server 2016 terms. So joining in the third year cost the same as covering all three. The page shows 'Last updated on 2026-08-24' (ms.date meta 2025-10-17); page 2 quoted the same text in its 2025-10 version, hence the reused id's date.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-prior-years-must-be-bought-to-join-late", "citation_text": "Every earlier ESU year had to be bought to join Windows Server 2012 ESU late: Year 2 and Year 3 licences required the prior years' licences, and late Azure Arc sign-ups were back-billed for each missed month (Microsoft, 2026). Source: Microsoft, \"Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)\" (https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-prior-years-must-be-bought-to-join-late." }, { "id": "microsoft-lifecycle-faq-esu-2026-08-arc-minimum-16-physical-or-8-virtual-cores", "family": "lifecycle-dates-esu", "statement": "16 physical cores per server (or 8 virtual cores per virtual machine) is the minimum Windows Server 2012 ESU purchase through Azure Arc, matching Windows Server's core-licensing minimums (Microsoft, 2026).", "short_statement": "Azure Arc bills at least **16** cores per physical server and 8 per virtual machine.", "short_refs": null, "value": 16, "unit": "cores, minimum ESU licence per physical server (8 per VM for virtual-core licensing)", "display_value": "16 cores (8 per VM)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10 to 2026-10", "population": "Microsoft's Extended Security Update terms for Windows Server 2012 and 2012 R2 (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-08-24", "accessed_at": "2026-10-14", "quote": "There is an 8-core minimum per VM for vCore licensing. ... There is a 16-core minimum per server for pCore licensing.", "locator": "Section 'Licensing with ESUs enabled by Azure Arc' > 'For Windows Server 2012 and 2012 R2'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Physical-core licensing on a Standard host covers up to 2 guest VMs; on Datacenter all VMs. Commercial Licensing ESUs follow the same minimums ('8-core minimum per processor and 16-core minimum per server'), and 'assume each 2 Processor license (the minimum per server) is equivalent to 16 pCores'. The Arc licence page applies the same minimums to Windows Server 2016 ESU. The page shows 'Last updated on 2026-08-24' (ms.date meta 2025-10-17); page 2 quoted the same text in its 2025-10 version, hence the reused id's date.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-arc-minimum-16-physical-or-8-virtual-cores", "citation_text": "16 physical cores per server (or 8 virtual cores per virtual machine) is the minimum Windows Server 2012 ESU purchase through Azure Arc, matching Windows Server's core-licensing minimums (Microsoft, 2026). Source: Microsoft, \"Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)\" (https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-arc-minimum-16-physical-or-8-virtual-cores." }, { "id": "microsoft-lifecycle-faq-esu-2026-08-eligibility-software-assurance-subscription-or-spla", "family": "lifecycle-dates-esu", "statement": "3 routes qualified a server for Windows Server ESU outside Azure: active Software Assurance, an active subscription licence (including CSP), or a licence-included SPLA hosting service (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 3, "unit": "eligibility routes for on-premises or hosted ESU", "display_value": "3 routes", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10 to 2026-10", "population": "Microsoft's Extended Security Update terms for Windows Server 2012 and 2012 R2 (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-08-24", "accessed_at": "2026-10-14", "quote": "Be covered by an active Software Assurance (SA) plan ... Have active subscription licenses acquired through any program, including Cloud Solution Provider (CSP). ... Have been acquired as 'License-Included' services through a Service Provider License Agreement (SPLA) partner.", "locator": "Section 'Eligibility Criteria'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Customers without Software Assurance were pointed to Azure: 'For customers who do not have Software Assurance, the alternative option to get access to ESUs is to migrate to Azure.' Software Assurance must have at least one month left when each ESU year is bought. For Windows Server 2016, the Arc licence page allows the same SA, SPLA or server-subscription routes. The page shows 'Last updated on 2026-08-24' (ms.date meta 2025-10-17); page 2 quoted the same text in its 2025-10 version, hence the reused id's date.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-eligibility-software-assurance-subscription-or-spla", "citation_text": "3 routes qualified a server for Windows Server ESU outside Azure: active Software Assurance, an active subscription licence (including CSP), or a licence-included SPLA hosting service (Microsoft, 2026). Source: Microsoft, \"Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)\" (https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-eligibility-software-assurance-subscription-or-spla." }, { "id": "microsoft-lifecycle-faq-esu-2026-08-arc-esu-billed-monthly-no-keys", "family": "lifecycle-dates-esu", "statement": "Monthly billing through an Azure subscription, with no product keys, is how Azure Arc delivers Windows Server ESU, against yearly licences activated by Multiple Activation Keys through Commercial Licensing (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "ESU delivery and billing options", "display_value": "Monthly (Arc) or yearly (licence)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10 to 2026-10", "population": "Microsoft's Extended Security Update terms for Windows Server 2012 and 2012 R2 (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-08-24", "accessed_at": "2026-10-14", "quote": "You pay a monthly fee for these ESUs. There are no keys needed; the new Azure subscription performs all the authentication and replaces the need for acquisition, deployment, and management of keys.", "locator": "Section 'How will ESUs be distributed?'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "ESUs enabled by Azure Arc went on sale through CSP on 1 September 2023 and licence (non-Arc) ESUs on 1 October 2023 (same FAQ). Charges stop on migration to Azure or upgrade. Microsoft's ESU product page: Arc gives 'a pay-as-you-go subscription model, compared to the classic Extended Security Updates offered through the Volume Licensing Center which are purchased in yearly increments.' The page shows 'Last updated on 2026-08-24' (ms.date meta 2025-10-17); page 2 quoted the same text in its 2025-10 version, hence the reused id's date.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-arc-esu-billed-monthly-no-keys", "citation_text": "Monthly billing through an Azure subscription, with no product keys, is how Azure Arc delivers Windows Server ESU, against yearly licences activated by Multiple Activation Keys through Commercial Licensing (Microsoft, 2026). Source: Microsoft, \"Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)\" (https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-faq-esu-2026-08-arc-esu-billed-monthly-no-keys." }, { "id": "microsoft-2019-08-esu-windows-server-2008-on-premises-about-75pct-of-licence-cost-annually", "family": "lifecycle-dates-esu", "statement": "75% of the on-premises licence cost each year was Microsoft's approximate price for Windows Server and SQL Server 2008 and 2008 R2 Extended Security Updates, a fixed price for all three years (Microsoft, 2019).", "short_statement": null, "short_refs": null, "value": 75, "unit": "% of on-premises licence cost per ESU year (Windows Server and SQL Server 2008/2008 R2, approximate)", "display_value": "about 75% per year", "display_label": "", "display_hook": null, "row_label": "Windows Server and SQL Server 2008, August 2019", "publisher_short": null, "geography": "Worldwide", "period": "2019-08", "population": "Microsoft's ESU pricing for Windows Server and SQL Server 2008 and 2008 R2 (marketing FAQ)", "sample_n": null, "publisher": "Microsoft", "source_title": "Extended Security Updates for SQL Server and Windows Server 2008/2008 R2 (Microsoft, Wayback snapshot 12 August 2019)", "source_url": "https://web.archive.org/web/20190812192621/https://www.microsoft.com/en-us/cloud-platform/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2019-08-12", "accessed_at": "2026-10-14", "quote": "Customers with active Software Assurance or subscription licenses can purchase Extended Security Updates for approximately 75% of the on-premises license cost annually.", "locator": "FAQ 'How much will Extended Security Updates cost for Windows Server and SQL Server 2008 and 2008 R2?', 'On-premises' paragraph; snapshot https://web.archive.org/web/20190812192621/https://www.microsoft.com/en-us/cloud-platform/extended-security-updates", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-esu-on-premises-price-rule", "history": [], "notes": "Same snapshot: 'Extended Security Updates pricing is approximately 75% (annually) of the EA or SCE license prices of the latest version of SQL Server or Windows Server.' The November 2021 version of the page adds: 'Prices for years 1, 2, and 3 for Windows Server and SQL 2008/2008 R2 versions are fixed.' Hosted (SPLA) customers paid the same 75% with a 16-core minimum per Windows Server instance. The page moved to windows-server/extended-security-updates in mid-2020.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2019-08-esu-windows-server-2008-on-premises-about-75pct-of-licence-cost-annually", "citation_text": "75% of the on-premises licence cost each year was Microsoft's approximate price for Windows Server and SQL Server 2008 and 2008 R2 Extended Security Updates, a fixed price for all three years (Microsoft, 2019). Source: Microsoft, \"Extended Security Updates for SQL Server and Windows Server 2008/2008 R2 (Microsoft, Wayback snapshot 12 August 2019)\" (https://web.archive.org/web/20190812192621/https://www.microsoft.com/en-us/cloud-platform/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2019-08-esu-windows-server-2008-on-premises-about-75pct-of-licence-cost-annually." }, { "id": "microsoft-2021-11-esu-windows-server-2012-on-premises-price-announced-75-100-125pct-by-year", "family": "lifecycle-dates-esu", "statement": "75%, 100% and 125% of the full licence price were the on-premises prices Microsoft first published for Windows Server 2012 ESU Years 1, 2 and 3, as its ESU page read in November 2021 and still in June 2023 (Microsoft, 2021).", "short_statement": null, "short_refs": null, "value": 75, "unit": "% of full licence price in ESU Year 1 (rising to 100% in Year 2 and 125% in Year 3), as announced", "display_value": "75%, 100%, 125%", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012, first published (November 2021)", "publisher_short": null, "geography": "Worldwide", "period": "2021-11", "population": "Microsoft's announced ESU pricing for Windows Server 2012/2012 R2 and SQL Server 2012 (marketing FAQ)", "sample_n": null, "publisher": "Microsoft", "source_title": "Extended Security Updates for SQL Server and Windows Server (Microsoft, Wayback snapshot 2 November 2021)", "source_url": "https://web.archive.org/web/20211102094346/https://www.microsoft.com/en-us/windows-server/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2021-11-02", "accessed_at": "2026-10-14", "quote": "16 core packs for Windows Server 2012, and are priced as below: Year 1: 75% of full license price annually Year 2: 100% of full license price annually Year 3: 125% of full license price annually", "locator": "FAQ 'How much will SQL Server and Window Server 2012 cost?', 'On-premises' paragraph; snapshot https://web.archive.org/web/20211102094346/https://www.microsoft.com/en-us/windows-server/extended-security-updates", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-esu-on-premises-price-rule", "history": [], "notes": "Same snapshot: 'Prices for Windows Server 2012/2012 R2 and SQL Server 2012 Extended Security Updates will increase in years 2 and 3 by an additional 25% of the base price of the license each year.' The snapshot of 29 June 2023 (saved: wayback-20230629163125-windows-server-esu.html) still shows the same three lines; the Learn lifecycle FAQ of 9 October 2023 shows 100% for each year (next record). Trade-press pieces that still quote 75/100/125 for Windows Server 2012 are using the superseded schedule.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2021-11-esu-windows-server-2012-on-premises-price-announced-75-100-125pct-by-year", "citation_text": "75%, 100% and 125% of the full licence price were the on-premises prices Microsoft first published for Windows Server 2012 ESU Years 1, 2 and 3, as its ESU page read in November 2021 and still in June 2023 (Microsoft, 2021). Source: Microsoft, \"Extended Security Updates for SQL Server and Windows Server (Microsoft, Wayback snapshot 2 November 2021)\" (https://web.archive.org/web/20211102094346/https://www.microsoft.com/en-us/windows-server/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2021-11-esu-windows-server-2012-on-premises-price-announced-75-100-125pct-by-year." }, { "id": "microsoft-2023-10-lifecycle-faq-esu-windows-server-2012-price-flat-100pct-earliest-capture", "family": "lifecycle-dates-esu", "statement": "100% of the full licence price in each of the three years was the Windows Server 2012 ESU price on Microsoft's lifecycle FAQ by 9 October 2023, the day before end of support, replacing the 75%, 100% and 125% schedule (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 100, "unit": "% of full licence price per ESU year (Windows Server 2012/R2), earliest capture of the flat rule", "display_value": "100% each year", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012, by 9 October 2023", "publisher_short": null, "geography": "Worldwide", "period": "2023-10-09", "population": "Microsoft's ESU pricing for Windows Server 2012 and 2012 R2 (lifecycle FAQ)", "sample_n": null, "publisher": "Microsoft", "source_title": "Lifecycle FAQ - Extended Security Updates (Microsoft Learn, Wayback snapshot 9 October 2023)", "source_url": "https://web.archive.org/web/20231009115804/https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2023-10-09", "accessed_at": "2026-10-14", "quote": "Year 1: 100% of full license price annually* Year 2: 100% of full license price annually Year 3: 100% of full license price annually * SQL Server 2012 Year 1 ESUs were 75% of the full license price", "locator": "Section 'Pricing' > 'On-premises and in hosted environments'; snapshot https://web.archive.org/web/20231009115804/https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-esu-on-premises-price-rule", "history": [], "notes": "The change happened between the 29 June 2023 capture of Microsoft's ESU marketing page (still 75/100/125) and this 9 October 2023 capture of the Learn FAQ; Microsoft published no announcement of the change that this collector found. The July 2024 capture (saved: wayback-20240711155326-learn-lifecycle-faq-esu.html) and the live FAQ (2026-08-24) carry the same flat rule; the live page has dropped the SQL Server footnote.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2023-10-lifecycle-faq-esu-windows-server-2012-price-flat-100pct-earliest-capture", "citation_text": "100% of the full licence price in each of the three years was the Windows Server 2012 ESU price on Microsoft's lifecycle FAQ by 9 October 2023, the day before end of support, replacing the 75%, 100% and 125% schedule (Microsoft, 2023). Source: Microsoft, \"Lifecycle FAQ - Extended Security Updates (Microsoft Learn, Wayback snapshot 9 October 2023)\" (https://web.archive.org/web/20231009115804/https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2023-10-lifecycle-faq-esu-windows-server-2012-price-flat-100pct-earliest-capture." }, { "id": "derived-microsoft-esu-windows-server-2012-three-year-on-premises-cost-300pct-of-licence-both-schedules", "family": "lifecycle-dates-esu", "statement": "300% of the full licence price was the three-year on-premises cost of Windows Server 2012 ESU under both of Microsoft's published schedules, 75% plus 100% plus 125% and 100% each year; only the split between years changed (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 300, "unit": "% of full licence price over three ESU years (Windows Server 2012/R2, on-premises)", "display_value": "300% over 3 years", "display_label": "Sum of Microsoft's yearly ESU prices, 2021 schedule and 2023 to 2026 schedule", "display_hook": null, "row_label": "Windows Server 2012, three years under either schedule", "publisher_short": null, "geography": "Worldwide", "period": "2023-10 to 2026-10", "population": "Microsoft's ESU pricing for Windows Server 2012 and 2012 R2", "sample_n": null, "publisher": "Microsoft", "source_title": "Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-08-24", "accessed_at": "2026-10-14", "quote": "Year 1: 100% of full license price annually Year 2: 100% of full license price annually Year 3: 100% of full license price annually", "locator": "Section 'Pricing' > 'On-premises and in hosted environments' (live page); the 2021 schedule is in the Wayback snapshot of 2 November 2021", "derived": true, "formula": "100% + 100% + 100% (live lifecycle FAQ, 2026-08-24) = 300%; 75% + 100% + 125% (ESU page, Wayback 20211102094346) = 300%", "headline": false, "series": "microsoft-windows-server-esu-on-premises-price-rule", "history": [], "notes": "For comparison, the 2008/R2 ESU cost about 225% over three years (75% fixed per year). Microsoft's 2008 rule priced ESU against the latest version's licence; the 2012 FAQ defines 'Full License price' as a licence-only purchase, not the licence portion of an L+SA contract.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-microsoft-esu-windows-server-2012-three-year-on-premises-cost-300pct-of-licence-both-schedules", "citation_text": "300% of the full licence price was the three-year on-premises cost of Windows Server 2012 ESU under both of Microsoft's published schedules, 75% plus 100% plus 125% and 100% each year; only the split between years changed (Microsoft, 2023). Source: Microsoft, \"Lifecycle FAQ - Extended Security Updates (Microsoft Learn, last updated 2026-08-24)\" (https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-microsoft-esu-windows-server-2012-three-year-on-premises-cost-300pct-of-licence-both-schedules." }, { "id": "azure-retail-prices-2026-10-14-windows-server-2012-arc-esu-standard-4-73-usd-per-core-month", "family": "lifecycle-dates-esu", "statement": "$4.73 per core per month is the Azure Arc list price of Windows Server 2012 Extended Security Updates for Standard edition, at Microsoft's $0.00648 per core-hour rate (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 4.73, "unit": "USD per core per month, Azure Arc ESU list price (Windows Server 2012 Standard)", "display_value": "$4.73 per core per month", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012 ESU, Standard", "publisher_short": null, "geography": "Worldwide", "period": "2023-09-01", "population": "Windows Server 2012 Standard cores enrolled in ESUs enabled by Azure Arc (list price, Global region)", "sample_n": null, "publisher": "Microsoft", "source_title": "Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)", "source_url": "https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'", "source_type": "primary", "source_access": "open", "published_at": "2023-09-01", "accessed_at": "2026-10-14", "quote": "\"retailPrice\":0.00648 ... \"meterName\":\"WS2012 Std 1C ESU\" ... \"unitOfMeasure\":\"1 Hour\" ... \"armSkuName\":\"WS 2012 Std 1 Core\"", "locator": "API item meterName 'WS2012 Std 1C ESU', type Consumption, effectiveStartDate 2023-09-01T00:00:00Z (saved: azure-retail-prices-arc-esu-2026-10-14.json)", "derived": true, "formula": "0.00648 USD per core-hour (meter 'WS2012 Std 1C ESU', Azure Retail Prices API, queried 2026-10-14) x 730 hours per month (Azure's monthly pricing convention) = 4.7304", "headline": false, "series": "azure-arc-windows-server-esu-price-per-core-month", "history": [], "notes": "Microsoft's Azure Arc pricing page (azure.microsoft.com/en-us/pricing/details/azure-arc/core-control-plane/) renders these prices client-side; its saved HTML shows '$-' placeholders, so the API is the machine-readable primary. List price in USD; the pricing page says customers 'pay the same list price regardless of where workloads are deployed ... or how Extended Security Updates are purchased'. Licences are bought in 16-core (physical) or 8-core (virtual) minimums.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#azure-retail-prices-2026-10-14-windows-server-2012-arc-esu-standard-4-73-usd-per-core-month", "citation_text": "$4.73 per core per month is the Azure Arc list price of Windows Server 2012 Extended Security Updates for Standard edition, at Microsoft's $0.00648 per core-hour rate (Microsoft, 2023). Source: Microsoft, \"Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)\" (https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#azure-retail-prices-2026-10-14-windows-server-2012-arc-esu-standard-4-73-usd-per-core-month." }, { "id": "azure-retail-prices-2026-10-14-windows-server-2012-arc-esu-datacenter-27-25-usd-per-core-month", "family": "lifecycle-dates-esu", "statement": "$27.25 per core per month is the Azure Arc list price of Windows Server 2012 Extended Security Updates for Datacenter edition, at Microsoft's $0.03733 per core-hour rate (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 27.25, "unit": "USD per core per month, Azure Arc ESU list price (Windows Server 2012 Datacenter)", "display_value": "$27.25 per core per month", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012 ESU, Datacenter", "publisher_short": null, "geography": "Worldwide", "period": "2023-09-01", "population": "Windows Server 2012 Datacenter cores enrolled in ESUs enabled by Azure Arc (list price, Global region)", "sample_n": null, "publisher": "Microsoft", "source_title": "Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)", "source_url": "https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'", "source_type": "primary", "source_access": "open", "published_at": "2023-09-01", "accessed_at": "2026-10-14", "quote": "\"retailPrice\":0.03733 ... \"meterName\":\"WS2012 DC 1C ESU\" ... \"unitOfMeasure\":\"1 Hour\" ... \"armSkuName\":\"WS 2012 DC 1 Core\"", "locator": "API item meterName 'WS2012 DC 1C ESU', type Consumption, effectiveStartDate 2023-09-01T00:00:00Z (saved: azure-retail-prices-arc-esu-2026-10-14.json)", "derived": true, "formula": "0.03733 USD per core-hour (meter 'WS2012 DC 1C ESU', Azure Retail Prices API, queried 2026-10-14) x 730 hours per month (Azure's monthly pricing convention) = 27.2509", "headline": false, "series": "azure-arc-windows-server-esu-price-per-core-month", "history": [], "notes": "Microsoft's Azure Arc pricing page (azure.microsoft.com/en-us/pricing/details/azure-arc/core-control-plane/) renders these prices client-side; its saved HTML shows '$-' placeholders, so the API is the machine-readable primary. List price in USD; the pricing page says customers 'pay the same list price regardless of where workloads are deployed ... or how Extended Security Updates are purchased'. Licences are bought in 16-core (physical) or 8-core (virtual) minimums.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#azure-retail-prices-2026-10-14-windows-server-2012-arc-esu-datacenter-27-25-usd-per-core-month", "citation_text": "$27.25 per core per month is the Azure Arc list price of Windows Server 2012 Extended Security Updates for Datacenter edition, at Microsoft's $0.03733 per core-hour rate (Microsoft, 2023). Source: Microsoft, \"Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)\" (https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#azure-retail-prices-2026-10-14-windows-server-2012-arc-esu-datacenter-27-25-usd-per-core-month." }, { "id": "azure-retail-prices-2026-10-14-windows-server-2016-arc-esu-standard-5-21-usd-per-core-month", "family": "lifecycle-dates-esu", "statement": "$5.21 per core per month is the Azure Arc list price of Windows Server 2016 Extended Security Updates for Standard edition, at Microsoft's $0.007132 per core-hour rate (Microsoft, 2026).", "short_statement": "Windows Server 2016 security updates cost **$5.21** per core a month through Azure Arc, $2,999 over three years for 16 cores (Microsoft, 2026).", "short_refs": [ "derived-azure-arc-esu-windows-server-2016-standard-16-core-three-years-2999-usd" ], "value": 5.21, "unit": "USD per core per month, Azure Arc ESU list price (Windows Server 2016 Standard)", "display_value": "$5.21 per core per month", "display_label": "Azure list price from 13 January 2027, about $83 a month for a 16-core server (Microsoft)", "display_hook": null, "row_label": "Windows Server 2016 ESU, Standard", "publisher_short": null, "geography": "Worldwide", "period": "2026-08-01", "population": "Windows Server 2016 Standard cores enrolled in ESUs enabled by Azure Arc (list price, Global region)", "sample_n": null, "publisher": "Microsoft", "source_title": "Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)", "source_url": "https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'", "source_type": "primary", "source_access": "open", "published_at": "2026-08-01", "accessed_at": "2026-10-14", "quote": "\"retailPrice\":0.007132 ... \"meterName\":\"WS2016 Std 1C ESU\" ... \"unitOfMeasure\":\"1 Hour\" ... \"armSkuName\":\"WS 2016 Std 1 Core\"", "locator": "API item meterName 'WS2016 Std 1C ESU', type Consumption, effectiveStartDate 2026-08-01T00:00:00Z (saved: azure-retail-prices-arc-esu-2026-10-14.json)", "derived": true, "formula": "0.007132 USD per core-hour (meter 'WS2016 Std 1C ESU', Azure Retail Prices API, queried 2026-10-14) x 730 hours per month (Azure's monthly pricing convention) = 5.2064", "headline": true, "series": "azure-arc-windows-server-esu-price-per-core-month", "history": [], "notes": "Microsoft's Azure Arc pricing page (azure.microsoft.com/en-us/pricing/details/azure-arc/core-control-plane/) renders these prices client-side; its saved HTML shows '$-' placeholders, so the API is the machine-readable primary. List price in USD; the pricing page says customers 'pay the same list price regardless of where workloads are deployed ... or how Extended Security Updates are purchased'. Licences are bought in 16-core (physical) or 8-core (virtual) minimums. Windows Server 2016 rates are 10.1% above the 2012 rates for both editions (0.007132/0.00648 and 0.041067/0.03733). The meters took effect on 1 August 2026; billing starts 13 January 2027.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#azure-retail-prices-2026-10-14-windows-server-2016-arc-esu-standard-5-21-usd-per-core-month", "citation_text": "$5.21 per core per month is the Azure Arc list price of Windows Server 2016 Extended Security Updates for Standard edition, at Microsoft's $0.007132 per core-hour rate (Microsoft, 2026). Source: Microsoft, \"Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)\" (https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#azure-retail-prices-2026-10-14-windows-server-2016-arc-esu-standard-5-21-usd-per-core-month." }, { "id": "azure-retail-prices-2026-10-14-windows-server-2016-arc-esu-datacenter-29-98-usd-per-core-month", "family": "lifecycle-dates-esu", "statement": "$29.98 per core per month is the Azure Arc list price of Windows Server 2016 Extended Security Updates for Datacenter edition, at Microsoft's $0.041067 per core-hour rate (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 29.98, "unit": "USD per core per month, Azure Arc ESU list price (Windows Server 2016 Datacenter)", "display_value": "$29.98 per core per month", "display_label": "", "display_hook": null, "row_label": "Windows Server 2016 ESU, Datacenter", "publisher_short": null, "geography": "Worldwide", "period": "2026-08-01", "population": "Windows Server 2016 Datacenter cores enrolled in ESUs enabled by Azure Arc (list price, Global region)", "sample_n": null, "publisher": "Microsoft", "source_title": "Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)", "source_url": "https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'", "source_type": "primary", "source_access": "open", "published_at": "2026-08-01", "accessed_at": "2026-10-14", "quote": "\"retailPrice\":0.041067 ... \"meterName\":\"WS2016 DC 1C ESU\" ... \"unitOfMeasure\":\"1 Hour\" ... \"armSkuName\":\"WS 2016 DC 1 Core\"", "locator": "API item meterName 'WS2016 DC 1C ESU', type Consumption, effectiveStartDate 2026-08-01T00:00:00Z (saved: azure-retail-prices-arc-esu-2026-10-14.json)", "derived": true, "formula": "0.041067 USD per core-hour (meter 'WS2016 DC 1C ESU', Azure Retail Prices API, queried 2026-10-14) x 730 hours per month (Azure's monthly pricing convention) = 29.9789", "headline": false, "series": "azure-arc-windows-server-esu-price-per-core-month", "history": [], "notes": "Microsoft's Azure Arc pricing page (azure.microsoft.com/en-us/pricing/details/azure-arc/core-control-plane/) renders these prices client-side; its saved HTML shows '$-' placeholders, so the API is the machine-readable primary. List price in USD; the pricing page says customers 'pay the same list price regardless of where workloads are deployed ... or how Extended Security Updates are purchased'. Licences are bought in 16-core (physical) or 8-core (virtual) minimums. Datacenter ESU covers unlimited VMs on the licensed host; Standard covers two.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#azure-retail-prices-2026-10-14-windows-server-2016-arc-esu-datacenter-29-98-usd-per-core-month", "citation_text": "$29.98 per core per month is the Azure Arc list price of Windows Server 2016 Extended Security Updates for Datacenter edition, at Microsoft's $0.041067 per core-hour rate (Microsoft, 2026). Source: Microsoft, \"Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)\" (https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#azure-retail-prices-2026-10-14-windows-server-2016-arc-esu-datacenter-29-98-usd-per-core-month." }, { "id": "derived-azure-arc-esu-windows-server-2016-standard-16-core-three-years-2999-usd", "family": "lifecycle-dates-esu", "statement": "$2,999 is what 3 years of Azure Arc Extended Security Updates cost at list price for one 16-core Windows Server 2016 Standard server, the minimum licence per physical server (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 2998.86, "unit": "USD list price, 3 years of Azure Arc ESU for a 16-core Windows Server 2016 Standard server", "display_value": "$2,999", "display_label": "Azure Arc ESU list price, January 2027 to January 2030 (derived from Microsoft's price list)", "display_hook": null, "row_label": "Windows Server 2016 Standard", "publisher_short": null, "geography": "Worldwide", "period": "2027-01 to 2030-01", "population": "A hypothetical 16-core Windows Server 2016 Standard server licensed on physical cores (worked example)", "sample_n": null, "publisher": "Microsoft", "source_title": "Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)", "source_url": "https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'", "source_type": "primary", "source_access": "open", "published_at": "2026-08-01", "accessed_at": "2026-10-14", "quote": "\"retailPrice\":0.007132 ... \"meterName\":\"WS2016 Std 1C ESU\" ... \"unitOfMeasure\":\"1 Hour\"", "locator": "API item for the per-core meter (saved: azure-retail-prices-arc-esu-2026-10-14.json); the 16-core minimum is in the lifecycle FAQ and the Arc licence page", "derived": true, "formula": "0.007132 USD per core-hour x 730 hours x 16 cores x 36 months = 2998.86 (16-core minimum per server: Microsoft lifecycle FAQ, 'There is a 16-core minimum per server for pCore licensing')", "headline": false, "series": "", "history": [], "notes": "Worked example at list price; excludes the underlying Windows Server licence and Software Assurance needed to qualify, CAL Software Assurance, and any back-billing for late enrolment. One year (about $1,000) is 85% of the $1,176 suggested price of a 16-core Windows Server 2025 Standard licence (Microsoft pricing page, 2026), so three years of ESU cost about 2.5 new Standard licences.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-azure-arc-esu-windows-server-2016-standard-16-core-three-years-2999-usd", "citation_text": "$2,999 is what 3 years of Azure Arc Extended Security Updates cost at list price for one 16-core Windows Server 2016 Standard server, the minimum licence per physical server (Microsoft, 2026). Source: Microsoft, \"Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)\" (https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-azure-arc-esu-windows-server-2016-standard-16-core-three-years-2999-usd." }, { "id": "derived-azure-arc-esu-windows-server-2016-datacenter-16-core-three-years-17268-usd", "family": "lifecycle-dates-esu", "statement": "$17,268 is what 3 years of Azure Arc Extended Security Updates cost at list price for one 16-core Windows Server 2016 Datacenter server, the minimum licence per physical server (Microsoft, 2026).", "short_statement": "For a 16-core Datacenter server, three years of updates cost **$17,268** at list price.", "short_refs": null, "value": 17267.85, "unit": "USD list price, 3 years of Azure Arc ESU for a 16-core Windows Server 2016 Datacenter server", "display_value": "$17,268", "display_label": "", "display_hook": null, "row_label": "Windows Server 2016 Datacenter", "publisher_short": null, "geography": "Worldwide", "period": "2027-01 to 2030-01", "population": "A hypothetical 16-core Windows Server 2016 Datacenter server licensed on physical cores (worked example)", "sample_n": null, "publisher": "Microsoft", "source_title": "Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)", "source_url": "https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'", "source_type": "primary", "source_access": "open", "published_at": "2026-08-01", "accessed_at": "2026-10-14", "quote": "\"retailPrice\":0.041067 ... \"meterName\":\"WS2016 DC 1C ESU\" ... \"unitOfMeasure\":\"1 Hour\"", "locator": "API item for the per-core meter (saved: azure-retail-prices-arc-esu-2026-10-14.json); the 16-core minimum is in the lifecycle FAQ and the Arc licence page", "derived": true, "formula": "0.041067 USD per core-hour x 730 hours x 16 cores x 36 months = 17267.85 (16-core minimum per server: Microsoft lifecycle FAQ, 'There is a 16-core minimum per server for pCore licensing')", "headline": false, "series": "", "history": [], "notes": "Worked example at list price; excludes the underlying Windows Server licence and Software Assurance needed to qualify, CAL Software Assurance, and any back-billing for late enrolment. One year (about $5,756) is 85% of the $6,771 suggested price of a 16-core Windows Server 2025 Datacenter licence (Microsoft pricing page, 2026).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-azure-arc-esu-windows-server-2016-datacenter-16-core-three-years-17268-usd", "citation_text": "$17,268 is what 3 years of Azure Arc Extended Security Updates cost at list price for one 16-core Windows Server 2016 Datacenter server, the minimum licence per physical server (Microsoft, 2026). Source: Microsoft, \"Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)\" (https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-azure-arc-esu-windows-server-2016-datacenter-16-core-three-years-17268-usd." }, { "id": "derived-azure-arc-esu-windows-server-2012-standard-16-core-three-years-2725-usd", "family": "lifecycle-dates-esu", "statement": "$2,725 is what 3 years of Azure Arc Extended Security Updates cost at list price for one 16-core Windows Server 2012 Standard server, the minimum licence per physical server (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 2724.71, "unit": "USD list price, 3 years of Azure Arc ESU for a 16-core Windows Server 2012 Standard server", "display_value": "$2,725", "display_label": "", "display_hook": null, "row_label": "Windows Server 2012 Standard", "publisher_short": null, "geography": "Worldwide", "period": "2023-10 to 2026-10", "population": "A hypothetical 16-core Windows Server 2012 Standard server licensed on physical cores (worked example)", "sample_n": null, "publisher": "Microsoft", "source_title": "Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)", "source_url": "https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'", "source_type": "primary", "source_access": "open", "published_at": "2023-09-01", "accessed_at": "2026-10-14", "quote": "\"retailPrice\":0.00648 ... \"meterName\":\"WS2012 Std 1C ESU\" ... \"unitOfMeasure\":\"1 Hour\"", "locator": "API item for the per-core meter (saved: azure-retail-prices-arc-esu-2026-10-14.json); the 16-core minimum is in the lifecycle FAQ and the Arc licence page", "derived": true, "formula": "0.00648 USD per core-hour x 730 hours x 16 cores x 36 months = 2724.71 (16-core minimum per server: Microsoft lifecycle FAQ, 'There is a 16-core minimum per server for pCore licensing')", "headline": false, "series": "", "history": [], "notes": "Worked example at list price; excludes the underlying Windows Server licence and Software Assurance needed to qualify, CAL Software Assurance, and any back-billing for late enrolment. Covers 10 October 2023 to 13 October 2026; Arc billing was monthly, so servers retired early paid less.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-azure-arc-esu-windows-server-2012-standard-16-core-three-years-2725-usd", "citation_text": "$2,725 is what 3 years of Azure Arc Extended Security Updates cost at list price for one 16-core Windows Server 2012 Standard server, the minimum licence per physical server (Microsoft, 2026). Source: Microsoft, \"Azure Retail Prices API, product 'Azure Arc Extended Security Updates' (Microsoft, queried 2026-10-14)\" (https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc Extended Security Updates' and armRegionName eq 'Global'). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-azure-arc-esu-windows-server-2012-standard-16-core-three-years-2725-usd." }, { "id": "microsoft-learn-sql-eos-2026-09-sql-server-esu-about-75pct-of-licence-cost-annually", "family": "lifecycle-dates-esu", "statement": "75% of the on-premises licence cost each year is Microsoft's approximate price for SQL Server Extended Security Updates, available for up to three years past end of support (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 75, "unit": "% of on-premises SQL Server licence cost per ESU year (approximate)", "display_value": "about 75% per year", "display_label": "", "display_hook": null, "row_label": "SQL Server ESU, 2026", "publisher_short": null, "geography": "Worldwide", "period": "2026", "population": "Microsoft's SQL Server ESU terms (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "SQL Server end of support options (Microsoft Learn, last updated 2026-09-14)", "source_url": "https://learn.microsoft.com/en-us/sql/sql-server/end-of-support/sql-server-end-of-support-overview?view=sql-server-ver17", "source_type": "primary", "source_access": "open", "published_at": "2026-09-14", "accessed_at": "2026-10-14", "quote": "Cost: This option can be costly, as ESUs are approximately 75% of the on-premises license cost annually.", "locator": "Section 'Extended Security Updates', list of considerations", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Same section: 'you can subscribe to Extended Security Updates (ESU) to receive Critical security updates for up to three years past the end of the support date.' Contrast: Windows Server 2012 ESU was 100% per year. The 2023 Learn FAQ footnote: 'SQL Server 2012 Year 1 ESUs were 75% of the full license price'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-sql-eos-2026-09-sql-server-esu-about-75pct-of-licence-cost-annually", "citation_text": "75% of the on-premises licence cost each year is Microsoft's approximate price for SQL Server Extended Security Updates, available for up to three years past end of support (Microsoft, 2026). Source: Microsoft, \"SQL Server end of support options (Microsoft Learn, last updated 2026-09-14)\" (https://learn.microsoft.com/en-us/sql/sql-server/end-of-support/sql-server-end-of-support-overview?view=sql-server-ver17). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-sql-eos-2026-09-sql-server-esu-about-75pct-of-licence-cost-annually." }, { "id": "microsoft-learn-sql-esu-2026-06-sql-server-2016-esu-not-free-on-azure-vms", "family": "lifecycle-dates-esu", "statement": "SQL Server 2016 is the first SQL Server version whose Extended Security Updates are not free after a move to Azure virtual machines; SQL Server 2014 workloads moved to Azure VMs still get them free (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "ESU terms (SQL Server 2016 on Azure VMs)", "display_value": "No free ESU on Azure VMs", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-07-14", "population": "Microsoft's SQL Server ESU terms (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "What are Extended Security Updates for SQL Server? (Microsoft Learn, last updated 2026-06-22)", "source_url": "https://learn.microsoft.com/en-us/sql/sql-server/end-of-support/sql-server-extended-security-updates?view=sql-server-ver17", "source_type": "primary", "source_access": "open", "published_at": "2026-06-22", "accessed_at": "2026-10-14", "quote": "Starting with SQL Server 2016 (13.x), migrating your workload to SQL Server on Azure VMs no longer provides free access to ESUs for SQL Server 2016 (13.x) instances.", "locator": "Section 'Changes to SQL Server 2016 ESUs'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Same page: 'SQL Server 2014 customers receive free ESUs when they migrate their workloads to SQL Server on Azure VMs. SQL Server 2016 customers can subscribe to receive ESUs ... but they aren't eligible for free ESUs.' The same applies to Azure VMware Solution. Windows Server 2016 ESU terms do not mention an Azure exception change (the Windows Server free-in-Azure rule is stated only for 2012 in the lifecycle FAQ as of 2026-10-14).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-sql-esu-2026-06-sql-server-2016-esu-not-free-on-azure-vms", "citation_text": "SQL Server 2016 is the first SQL Server version whose Extended Security Updates are not free after a move to Azure virtual machines; SQL Server 2014 workloads moved to Azure VMs still get them free (Microsoft, 2026). Source: Microsoft, \"What are Extended Security Updates for SQL Server? (Microsoft Learn, last updated 2026-06-22)\" (https://learn.microsoft.com/en-us/sql/sql-server/end-of-support/sql-server-extended-security-updates?view=sql-server-ver17). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-sql-esu-2026-06-sql-server-2016-esu-not-free-on-azure-vms." }, { "id": "microsoft-learn-sql-esu-2026-06-sql-server-esu-critical-updates-only-no-regular-cadence", "family": "lifecycle-dates-esu", "statement": "Only vulnerabilities rated Critical trigger SQL Server Extended Security Updates, so they have no regular release cadence, unlike Windows Server ESU, which also carries Important updates (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "ESU scope (SQL Server)", "display_value": "Critical only", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026", "population": "Microsoft's SQL Server ESU terms (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "What are Extended Security Updates for SQL Server? (Microsoft Learn, last updated 2026-06-22)", "source_url": "https://learn.microsoft.com/en-us/sql/sql-server/end-of-support/sql-server-extended-security-updates?view=sql-server-ver17", "source_type": "primary", "source_access": "open", "published_at": "2026-06-22", "accessed_at": "2026-10-14", "quote": "Microsoft makes ESUs available if needed once a security vulnerability is discovered and rated as Critical by the Microsoft Security Response Center (MSRC). Therefore, there's no regular release cadence for SQL Server ESUs.", "locator": "Section 'Overview', third paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The 2019 ESU page said the same for 2008: SQL Server ESU covered bulletins rated 'critical', Windows Server 'critical' and 'important'. SQL Server ESUs exclude new features, functional improvements and customer-requested fixes (same page).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-sql-esu-2026-06-sql-server-esu-critical-updates-only-no-regular-cadence", "citation_text": "Only vulnerabilities rated Critical trigger SQL Server Extended Security Updates, so they have no regular release cadence, unlike Windows Server ESU, which also carries Important updates (Microsoft, 2026). Source: Microsoft, \"What are Extended Security Updates for SQL Server? (Microsoft Learn, last updated 2026-06-22)\" (https://learn.microsoft.com/en-us/sql/sql-server/end-of-support/sql-server-extended-security-updates?view=sql-server-ver17). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-sql-esu-2026-06-sql-server-esu-critical-updates-only-no-regular-cadence." }, { "id": "azure-retail-prices-2026-10-14-sql-server-2016-arc-esu-standard-0-19-usd-per-core-hour", "family": "lifecycle-dates-esu", "statement": "$138.70 per core per month (Standard) and $540.20 (Enterprise) are the Azure Arc list prices of SQL Server 2016 Extended Security Updates, at Microsoft's $0.19 and $0.74 per core-hour rates (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 138.7, "unit": "USD per core per month, Azure Arc ESU list price (SQL Server 2016 Standard)", "display_value": "$138.70 per core per month (Standard)", "display_label": "", "display_hook": null, "row_label": "SQL Server 2016 ESU, Standard edition", "publisher_short": null, "geography": "Worldwide", "period": "2026-04-01", "population": "SQL Server 2016 cores enrolled in ESUs enabled by Azure Arc (list price, Global region)", "sample_n": null, "publisher": "Microsoft", "source_title": "Azure Retail Prices API, product 'Azure Arc-enabled SQL Server - Arc-enabled servers' (Microsoft, queried 2026-10-14)", "source_url": "https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc-enabled SQL Server - Arc-enabled servers' and armRegionName eq 'Global' and contains(meterName,'ESU')", "source_type": "primary", "source_access": "open", "published_at": "2026-04-01", "accessed_at": "2026-10-14", "quote": "\"retailPrice\":0.19 ... \"meterName\":\"Std edition - ESU 2016\" ... \"retailPrice\":0.74 ... \"meterName\":\"Ent edition - ESU 2016\"", "locator": "API items 'Std edition - ESU 2016' and 'Ent edition - ESU 2016', type Consumption, effectiveStartDate 2026-04-01 (saved: azure-retail-prices-arc-sql-esu-2026-10-14.json)", "derived": true, "formula": "0.19 USD per core-hour x 730 hours = 138.70; 0.74 x 730 = 540.20 (meters 'Std edition - ESU 2016' and 'Ent edition - ESU 2016', Azure Retail Prices API, queried 2026-10-14)", "headline": false, "series": "azure-arc-sql-server-esu-price-per-core-month", "history": [], "notes": "The API states only '1 Hour'; Microsoft Learn's Arc SQL ESU page says usage 'is metered based on the total number of virtual cores available to the OSE. The minimum is four virtual cores per OSE.' SQL Server 2014 ESU meters carry the same rates ($0.19 and $0.74); SQL Server 2012 ESU was $0.17 and $0.67. Separate 'Azure ESU 2016' meters at the same rates bill SQL Server 2016 on Azure VMs.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#azure-retail-prices-2026-10-14-sql-server-2016-arc-esu-standard-0-19-usd-per-core-hour", "citation_text": "$138.70 per core per month (Standard) and $540.20 (Enterprise) are the Azure Arc list prices of SQL Server 2016 Extended Security Updates, at Microsoft's $0.19 and $0.74 per core-hour rates (Microsoft, 2026). Source: Microsoft, \"Azure Retail Prices API, product 'Azure Arc-enabled SQL Server - Arc-enabled servers' (Microsoft, queried 2026-10-14)\" (https://prices.azure.com/api/retail/prices?$filter=productName eq 'Azure Arc-enabled SQL Server - Arc-enabled servers' and armRegionName eq 'Global' and contains(meterName,'ESU')). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#azure-retail-prices-2026-10-14-sql-server-2016-arc-esu-standard-0-19-usd-per-core-hour." }, { "id": "microsoft-techcommunity-2025-07-16-hotpatch-windows-server-2025-arc-ga-1-50-usd-per-core-per-month", "family": "lifecycle-dates-esu", "statement": "$1.50 per CPU core per month was the subscription price for hotpatching on Azure Arc-connected Windows Server 2025 servers when it became generally available on 16 July 2025 (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 1.5, "unit": "USD per CPU core per month (Windows Server 2025 hotpatching via Azure Arc)", "display_value": "$1.50 per core per month", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-07-16", "population": "Windows Server 2025 Standard and Datacenter servers outside Azure connected to Azure Arc", "sample_n": null, "publisher": "Microsoft", "source_title": "Hotpatching for Windows Server 2025 now generally available (Microsoft Tech Community, Windows Server News and Best Practices)", "source_url": "https://techcommunity.microsoft.com/blog/windowsservernewsandbestpractices/hotpatching-for-azure-arc%E2%80%93connected-servers-general-availability-and-subscriptio/4433915", "source_type": "primary", "source_access": "open", "published_at": "2025-07-16", "accessed_at": "2026-10-14", "quote": "Hotpatching has been in public preview at no cost, but as of July 16, 2025, a monthly subscription fee of $1.50 USD per CPU core will apply.", "locator": "Section 'What is hotpatching?', second paragraph", "derived": false, "formula": null, "headline": false, "series": "windows-server-2025-arc-hotpatch-price", "history": [], "notes": "Same id and figure as the next-versions-adoption family's record (that family also holds the GA-date contradiction record: 1 July, 16 June or 16 July 2025 in different Microsoft posts). Re-fetched for this family (saved: techcommunity-hotpatch-ga-4433915.html). The Windows Server blog (24 April 2025, updated) gives the same price: 'Azure Arc-enabled Hotpatching for Windows Server 2025 is available for a subscription of $1.50 USD per CPU core per month.' Hotpatch was always included at no extra cost on Datacenter: Azure Edition.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-techcommunity-2025-07-16-hotpatch-windows-server-2025-arc-ga-1-50-usd-per-core-per-month", "citation_text": "$1.50 per CPU core per month was the subscription price for hotpatching on Azure Arc-connected Windows Server 2025 servers when it became generally available on 16 July 2025 (Microsoft, 2025). Source: Microsoft, \"Hotpatching for Windows Server 2025 now generally available (Microsoft Tech Community, Windows Server News and Best Practices)\" (https://techcommunity.microsoft.com/blog/windowsservernewsandbestpractices/hotpatching-for-azure-arc%E2%80%93connected-servers-general-availability-and-subscriptio/4433915). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-techcommunity-2025-07-16-hotpatch-windows-server-2025-arc-ga-1-50-usd-per-core-per-month." }, { "id": "microsoft-techcommunity-2026-05-19-hotpatch-arc-windows-server-2025-no-additional-cost-billing-stopped-2026-05-15", "family": "lifecycle-dates-esu", "statement": "$0 is the price of Azure Arc-enabled hotpatching for Windows Server 2025 since 15 May 2026, when Microsoft stopped all hotpatch billing ten months after launching it at $1.50 per core per month (Microsoft, 2026).", "short_statement": "Hotpatching for Windows Server 2025, launched at $1.50 per core a month, has been **free** since 15 May 2026.", "short_refs": null, "value": 0, "unit": "USD per CPU core per month (Windows Server 2025 hotpatching via Azure Arc)", "display_value": "$0 (from 15 May 2026)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-05-15", "population": "Windows Server 2025 Standard and Datacenter servers outside Azure connected to Azure Arc", "sample_n": null, "publisher": "Microsoft", "source_title": "Simplified access to Hotpatching enabled by Azure Arc for Windows Server 2025 (Microsoft Tech Community, Azure Arc Blog)", "source_url": "https://techcommunity.microsoft.com/blog/AzureArcBlog/simplified-access-to-hotpatching-enabled-by-azure-arc-for-windows-server-2025/4521251", "source_type": "primary", "source_access": "open", "published_at": "2026-05-19", "accessed_at": "2026-10-14", "quote": "Yes, as of 15th May 2026 all billing for hotpatch has been stopped for all existing machines enrolled in hotpatch.", "locator": "FAQ 'Will billing be stopped for existing enrolled machines?'; headline sentence: 'hotpatch enabled by Azure Arc is now available at no additional cost for Windows Server 2025'", "derived": false, "formula": null, "headline": false, "series": "windows-server-2025-arc-hotpatch-price", "history": [], "notes": "Same id and figure as the next-versions-adoption family's record. Post dated 19 May 2026 (page datePublished). Hotpatching still needs quarterly baseline restarts (January, April, July, October), per the April 2025 Windows Server blog: 'rebooting is reduced to quarterly (4 times a year)'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-techcommunity-2026-05-19-hotpatch-arc-windows-server-2025-no-additional-cost-billing-stopped-2026-05-15", "citation_text": "$0 is the price of Azure Arc-enabled hotpatching for Windows Server 2025 since 15 May 2026, when Microsoft stopped all hotpatch billing ten months after launching it at $1.50 per core per month (Microsoft, 2026). Source: Microsoft, \"Simplified access to Hotpatching enabled by Azure Arc for Windows Server 2025 (Microsoft Tech Community, Azure Arc Blog)\" (https://techcommunity.microsoft.com/blog/AzureArcBlog/simplified-access-to-hotpatching-enabled-by-azure-arc-for-windows-server-2025/4521251). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-techcommunity-2026-05-19-hotpatch-arc-windows-server-2025-no-additional-cost-billing-stopped-2026-05-15." }, { "id": "microsoft-ws2016-licensing-datasheet-core-based-licensing-since-october-2016", "family": "lifecycle-dates-esu", "statement": "Core-based licensing replaced per-processor licensing for Windows Server Standard and Datacenter in October 2016, when Windows Server 2016 became generally available (Microsoft, 2018).", "short_statement": null, "short_refs": null, "value": null, "unit": "date (licensing model change)", "display_value": "October 2016", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2016-10", "population": "Windows Server Standard and Datacenter licensing", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2016 Licensing Datasheet (Microsoft, PDF dated 2018-01-23)", "source_url": "https://download.microsoft.com/download/7/2/9/7290EA05-DC56-4BED-9400-138C5701F174/WS2016LicensingDatasheet.pdf", "source_type": "primary", "source_access": "open", "published_at": "2018-01-23", "accessed_at": "2026-10-14", "quote": "The business model for Standard and Datacenter editions transitioned from processor-based to core-based licensing in October 2016 with the general availability of Windows Server 2016", "locator": "Page 2, section 'Windows Server 2016 licensing model', first paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "published_at is the PDF's creation date (2018-01-23); the datasheet itself is undated. Same paragraph: other Windows Server 2016 editions stayed on the processor-based model. This is why Windows Server 2008 and 2012 ESU is counted in 16-core packs ('assume each 2 Processor license ... is equivalent to 16 pCores', lifecycle FAQ).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-ws2016-licensing-datasheet-core-based-licensing-since-october-2016", "citation_text": "Core-based licensing replaced per-processor licensing for Windows Server Standard and Datacenter in October 2016, when Windows Server 2016 became generally available (Microsoft, 2018). Source: Microsoft, \"Windows Server 2016 Licensing Datasheet (Microsoft, PDF dated 2018-01-23)\" (https://download.microsoft.com/download/7/2/9/7290EA05-DC56-4BED-9400-138C5701F174/WS2016LicensingDatasheet.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-ws2016-licensing-datasheet-core-based-licensing-since-october-2016." }, { "id": "microsoft-ws2016-licensing-datasheet-16-core-price-883-standard-6155-datacenter-usd", "family": "lifecycle-dates-esu", "statement": "$883 for Standard and $6,155 for Datacenter were Microsoft's Open NL reference prices for 16 core licences of Windows Server 2016 (Microsoft, 2018).", "short_statement": null, "short_refs": null, "value": 883, "unit": "USD, Open (NL) ERP price for 16 core licences, Windows Server 2016 Standard", "display_value": "$883 (Standard), $6,155 (Datacenter)", "display_label": "", "display_hook": null, "row_label": "Windows Server 2016, 16 cores (Open NL reference)", "publisher_short": null, "geography": "Worldwide", "period": "2016-10", "population": "Windows Server 2016 Standard and Datacenter licences (reference price)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2016 Licensing Datasheet (Microsoft, PDF dated 2018-01-23)", "source_url": "https://download.microsoft.com/download/7/2/9/7290EA05-DC56-4BED-9400-138C5701F174/WS2016LicensingDatasheet.pdf", "source_type": "primary", "source_access": "open", "published_at": "2018-01-23", "accessed_at": "2026-10-14", "quote": "Price** $6,155 $883 ... Pricing for Open (NL) ERP license for 16 core licenses. Actual customer prices may vary.", "locator": "Page 1, table 'Windows Server 2016' (Datacenter Edition | Standard Edition columns), row 'Price' and its footnote", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Text extraction of the PDF splits 'core' as 'cor e'; the printed document reads '16 core licenses'. For the ESU arithmetic: 100% of a $883 Standard licence a year is below the $1,000 a year that Azure Arc ESU costs for 16 Windows Server 2016 Standard cores. Windows Server 2025 Standard lists at $1,176 (33% more than the 2016 reference price).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-ws2016-licensing-datasheet-16-core-price-883-standard-6155-datacenter-usd", "citation_text": "$883 for Standard and $6,155 for Datacenter were Microsoft's Open NL reference prices for 16 core licences of Windows Server 2016 (Microsoft, 2018). Source: Microsoft, \"Windows Server 2016 Licensing Datasheet (Microsoft, PDF dated 2018-01-23)\" (https://download.microsoft.com/download/7/2/9/7290EA05-DC56-4BED-9400-138C5701F174/WS2016LicensingDatasheet.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-ws2016-licensing-datasheet-16-core-price-883-standard-6155-datacenter-usd." }, { "id": "microsoft-licensing-guidance-ws2025-16-core-minimum-per-server-8-per-processor", "family": "lifecycle-dates-esu", "statement": "16 core licences per server and 8 per physical processor are the minimums for licensing Windows Server 2025 Standard or Datacenter on physical cores, the same minimums ESU purchases follow (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 16, "unit": "core licences, minimum per physical server (8 per processor)", "display_value": "16 cores per server (8 per processor)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026", "population": "Windows Server 2025 Standard and Datacenter licensing", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 Licensing Guidance (Microsoft Licensing)", "source_url": "https://www.microsoft.com/licensing/guidance/Windows-Server-2025", "source_type": "primary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "the number of core licenses required equals the number of physical cores on the licensed server, subject to a minimum of 8 core licenses per physical processor and a minimum of 16 core licenses per server.", "locator": "Section 'Licensing model', paragraph on licensing based on physical cores", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Undated page; published_at is the access date. Core licences are sold in 2-packs and 16-packs. Standard covers two OSEs per fully licensed server (stack licences for more); Datacenter unlimited.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-licensing-guidance-ws2025-16-core-minimum-per-server-8-per-processor", "citation_text": "16 core licences per server and 8 per physical processor are the minimums for licensing Windows Server 2025 Standard or Datacenter on physical cores, the same minimums ESU purchases follow (Microsoft, 2026). Source: Microsoft, \"Windows Server 2025 Licensing Guidance (Microsoft Licensing)\" (https://www.microsoft.com/licensing/guidance/Windows-Server-2025). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-licensing-guidance-ws2025-16-core-minimum-per-server-8-per-processor." }, { "id": "microsoft-licensing-guidance-ws2025-licensing-by-vm-added-october-2022-8-core-minimum", "family": "lifecycle-dates-esu", "statement": "8 core licences per virtual machine is the minimum when Windows Server is licensed by virtual machine, an option Microsoft added in October 2022 for subscription and Software Assurance customers (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 8, "unit": "core licences, minimum per virtual machine (licensing by VM)", "display_value": "8 cores per VM", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2022-10", "population": "Windows Server 2025 Standard and Datacenter licensing", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 Licensing Guidance (Microsoft Licensing)", "source_url": "https://www.microsoft.com/licensing/guidance/Windows-Server-2025", "source_type": "primary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "The option to license Windows Server by virtual machine was added in October 2022 ... subject to a minimum of 8 core licenses per virtual machine.", "locator": "Section 'Licensing model', first and third paragraphs", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Undated page; published_at is the access date. The same 8-core-per-VM minimum applies to virtual-core ESU through Azure Arc (lifecycle FAQ). The footnote adds 'and 16 core licenses per customer' for licensing by VM.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-licensing-guidance-ws2025-licensing-by-vm-added-october-2022-8-core-minimum", "citation_text": "8 core licences per virtual machine is the minimum when Windows Server is licensed by virtual machine, an option Microsoft added in October 2022 for subscription and Software Assurance customers (Microsoft, 2026). Source: Microsoft, \"Windows Server 2025 Licensing Guidance (Microsoft Licensing)\" (https://www.microsoft.com/licensing/guidance/Windows-Server-2025). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-licensing-guidance-ws2025-licensing-by-vm-added-october-2022-8-core-minimum." }, { "id": "microsoft-pricing-2026-10-windows-server-2025-standard-1176-usd-16-cores", "family": "lifecycle-dates-esu", "statement": "$1,176 is Microsoft's suggested retail price for Windows Server 2025 Standard, for 16 core licences, plus client access licences (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 1176, "unit": "USD suggested MSRP, 16 core licences (Windows Server 2025 Standard)", "display_value": "$1,176", "display_label": "", "display_hook": null, "row_label": "Windows Server 2025 Standard, 16 cores", "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "Windows Server 2025 Standard licence (suggested MSRP, USD)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 Licensing & Pricing (Microsoft)", "source_url": "https://www.microsoft.com/en-us/windows-server/pricing", "source_type": "primary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Windows Server 2025 Standard edition Suggested MSRP: $1,176 ... Datacenter and Standard edition pricing is for 16 core licenses", "locator": "Section 'Windows Server pricing and licensing overview', Standard card; footnote [3]", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Undated page; published_at is the access date. Footnote [1]: 'Pricing is shown in USD and may vary from country to country.' CALs are extra ('CALs are required for every user or device accessing a server').", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-pricing-2026-10-windows-server-2025-standard-1176-usd-16-cores", "citation_text": "$1,176 is Microsoft's suggested retail price for Windows Server 2025 Standard, for 16 core licences, plus client access licences (Microsoft, 2026). Source: Microsoft, \"Windows Server 2025 Licensing & Pricing (Microsoft)\" (https://www.microsoft.com/en-us/windows-server/pricing). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-pricing-2026-10-windows-server-2025-standard-1176-usd-16-cores." }, { "id": "microsoft-pricing-2026-10-windows-server-2025-datacenter-6771-usd-16-cores", "family": "lifecycle-dates-esu", "statement": "$6,771 is Microsoft's suggested retail price for Windows Server 2025 Datacenter, for 16 core licences, plus client access licences (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 6771, "unit": "USD suggested MSRP, 16 core licences (Windows Server 2025 Datacenter)", "display_value": "$6,771", "display_label": "", "display_hook": null, "row_label": "Windows Server 2025 Datacenter, 16 cores", "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "Windows Server 2025 Datacenter licence (suggested MSRP, USD)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 Licensing & Pricing (Microsoft)", "source_url": "https://www.microsoft.com/en-us/windows-server/pricing", "source_type": "primary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Windows Server 2025 Datacenter edition Suggested MSRP: $6,771 ... Datacenter and Standard edition pricing is for 16 core licenses", "locator": "Section 'Windows Server pricing and licensing overview', Datacenter card; footnote [3]", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Undated page; published_at is the access date. The Windows Server 2016 Datacenter reference price was $6,155 (2016 datasheet).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-pricing-2026-10-windows-server-2025-datacenter-6771-usd-16-cores", "citation_text": "$6,771 is Microsoft's suggested retail price for Windows Server 2025 Datacenter, for 16 core licences, plus client access licences (Microsoft, 2026). Source: Microsoft, \"Windows Server 2025 Licensing & Pricing (Microsoft)\" (https://www.microsoft.com/en-us/windows-server/pricing). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-pricing-2026-10-windows-server-2025-datacenter-6771-usd-16-cores." }, { "id": "microsoft-pricing-2026-10-windows-server-pay-as-you-go-arc-33-58-usd-per-core-month", "family": "lifecycle-dates-esu", "statement": "$33.58 per CPU core per month is Microsoft's pay-as-you-go price for Windows Server licensed through Azure Arc, the alternative to buying 16-core licences (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 33.58, "unit": "USD per CPU core per month (Windows Server pay-as-you-go via Azure Arc)", "display_value": "$33.58 per core per month", "display_label": "", "display_hook": null, "row_label": "Windows Server licence, pay as you go through Azure Arc", "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "Windows Server pay-as-you-go licences via Azure Arc (list price, USD)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 Licensing & Pricing (Microsoft)", "source_url": "https://www.microsoft.com/en-us/windows-server/pricing", "source_type": "primary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "$33.58 per CPU core / month; $0.046 / hour", "locator": "Section 'Payment options' > 'Traditional licensing or pay as you go'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Undated page; published_at is the access date. Footnote [4]: 'Unlimited virtualization is not available through pay-as-you-go for on-premises Azure Arc enabled servers.' For scale: Windows Server 2016 Standard ESU via Arc is $5.21 per core per month.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-pricing-2026-10-windows-server-pay-as-you-go-arc-33-58-usd-per-core-month", "citation_text": "$33.58 per CPU core per month is Microsoft's pay-as-you-go price for Windows Server licensed through Azure Arc, the alternative to buying 16-core licences (Microsoft, 2026). Source: Microsoft, \"Windows Server 2025 Licensing & Pricing (Microsoft)\" (https://www.microsoft.com/en-us/windows-server/pricing). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-pricing-2026-10-windows-server-pay-as-you-go-arc-33-58-usd-per-core-month." }, { "id": "microsoft-lifecycle-hyperv-server-2008-extended-end-2020-01-14", "family": "lifecycle-dates-esu", "statement": "Hyper-V Server 2008, released on 30 December 2008, reached the end of extended support on 14 January 2020, after mainstream support ended on 14 January 2014 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 January 2020", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2020-01-14", "population": "Hyper-V Server 2008 (standalone hypervisor product)", "sample_n": null, "publisher": "Microsoft", "source_title": "Hyper-V Server 2008 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2008", "source_type": "primary", "source_access": "open", "published_at": "2022-10-25", "accessed_at": "2026-10-14", "quote": "Hyper-V Server 2008 | 12/30/2008 8:00:00 AM | 1/15/2014 6:59:59 AM | 1/15/2020 6:59:59 AM", "locator": "Table 'Support Dates', row 'Hyper-V Server 2008' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-hyperv-server-lifecycle-dates", "history": [], "notes": "Its mainstream support ended on 14 January 2014, a year before Windows Server 2008's (13 January 2015); extended support ended the same day. The page lists no Extended Security Update rows. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-hyperv-server-2008-extended-end-2020-01-14", "citation_text": "Hyper-V Server 2008, released on 30 December 2008, reached the end of extended support on 14 January 2020, after mainstream support ended on 14 January 2014 (Microsoft, 2022). Source: Microsoft, \"Hyper-V Server 2008 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)\" (https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2008). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-hyperv-server-2008-extended-end-2020-01-14." }, { "id": "microsoft-lifecycle-hyperv-server-2008-r2-extended-end-2020-01-14", "family": "lifecycle-dates-esu", "statement": "Hyper-V Server 2008 R2, released on 22 October 2009, reached the end of extended support on 14 January 2020, after mainstream support ended on 14 January 2014 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 January 2020", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2020-01-14", "population": "Hyper-V Server 2008 R2 (standalone hypervisor product)", "sample_n": null, "publisher": "Microsoft", "source_title": "Hyper-V Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2008-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-10-25", "accessed_at": "2026-10-14", "quote": "Hyper-V Server 2008 R2 | 10/22/2009 8:00:00 AM | 1/15/2014 6:59:59 AM | 1/15/2020 6:59:59 AM", "locator": "Table 'Support Dates', row 'Hyper-V Server 2008 R2' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-hyperv-server-lifecycle-dates", "history": [], "notes": "Its mainstream support ended on 14 January 2014, a year before Windows Server 2008 R2's (13 January 2015). The page lists no Extended Security Update rows. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-hyperv-server-2008-r2-extended-end-2020-01-14", "citation_text": "Hyper-V Server 2008 R2, released on 22 October 2009, reached the end of extended support on 14 January 2020, after mainstream support ended on 14 January 2014 (Microsoft, 2022). Source: Microsoft, \"Hyper-V Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)\" (https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2008-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-hyperv-server-2008-r2-extended-end-2020-01-14." }, { "id": "microsoft-lifecycle-hyperv-server-2012-extended-end-2023-10-10", "family": "lifecycle-dates-esu", "statement": "Hyper-V Server 2012, released on 30 October 2012, reached the end of extended support on 10 October 2023, after mainstream support ended on 9 January 2018 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "10 October 2023", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10-10", "population": "Hyper-V Server 2012 (standalone hypervisor product)", "sample_n": null, "publisher": "Microsoft", "source_title": "Hyper-V Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-05-02)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2012", "source_type": "primary", "source_access": "open", "published_at": "2022-05-02", "accessed_at": "2026-10-14", "quote": "Hyper-V Server 2012 | 10/30/2012 8:00:00 AM | 1/10/2018 6:59:59 AM | 10/11/2023 6:59:59 AM", "locator": "Table 'Support Dates', row 'Hyper-V Server 2012' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-hyperv-server-lifecycle-dates", "history": [], "notes": "Its mainstream support ended on 9 January 2018, nine months before Windows Server 2012's (9 October 2018); extended support ended the same day (10 October 2023). The page lists no Extended Security Update rows. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-hyperv-server-2012-extended-end-2023-10-10", "citation_text": "Hyper-V Server 2012, released on 30 October 2012, reached the end of extended support on 10 October 2023, after mainstream support ended on 9 January 2018 (Microsoft, 2022). Source: Microsoft, \"Hyper-V Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-05-02)\" (https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-hyperv-server-2012-extended-end-2023-10-10." }, { "id": "microsoft-lifecycle-hyperv-server-2012-r2-extended-end-2023-10-10", "family": "lifecycle-dates-esu", "statement": "Hyper-V Server 2012 R2, released on 25 November 2013, reached the end of extended support on 10 October 2023, after mainstream support ended on 9 January 2018 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "10 October 2023", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10-10", "population": "Hyper-V Server 2012 R2 (standalone hypervisor product)", "sample_n": null, "publisher": "Microsoft", "source_title": "Hyper-V Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-05-02)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2012-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-05-02", "accessed_at": "2026-10-14", "quote": "Hyper-V Server 2012 R2 | 11/25/2013 8:00:00 AM | 1/10/2018 6:59:59 AM | 10/11/2023 6:59:59 AM", "locator": "Table 'Support Dates', row 'Hyper-V Server 2012 R2' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-hyperv-server-lifecycle-dates", "history": [], "notes": "Its mainstream support ended on 9 January 2018, nine months before Windows Server 2012 R2's (9 October 2018). The page lists no Extended Security Update rows. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-hyperv-server-2012-r2-extended-end-2023-10-10", "citation_text": "Hyper-V Server 2012 R2, released on 25 November 2013, reached the end of extended support on 10 October 2023, after mainstream support ended on 9 January 2018 (Microsoft, 2022). Source: Microsoft, \"Hyper-V Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-05-02)\" (https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2012-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-hyperv-server-2012-r2-extended-end-2023-10-10." }, { "id": "microsoft-lifecycle-hyperv-server-2016-extended-end-2027-01-12", "family": "lifecycle-dates-esu", "statement": "Hyper-V Server 2016, released on 15 October 2016, reaches the end of extended support on 12 January 2027, after mainstream support ended on 11 January 2022 (Microsoft, 2021).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "12 January 2027", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2027-01-12", "population": "Hyper-V Server 2016 (standalone hypervisor product)", "sample_n": null, "publisher": "Microsoft", "source_title": "Hyper-V Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2021-08-27)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2016", "source_type": "primary", "source_access": "open", "published_at": "2021-08-27", "accessed_at": "2026-10-14", "quote": "Hyper-V Server 2016 | 10/15/2016 8:00:00 AM | 1/12/2022 6:59:59 AM | 1/13/2027 6:59:59 AM", "locator": "Table 'Support Dates', row 'Hyper-V Server 2016' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-hyperv-server-lifecycle-dates", "history": [], "notes": "Same dates as Windows Server 2016. Microsoft's end-of-support-2027 list names 'Hyper-V Server 2016' under January 12, 2027. The page lists no Extended Security Update rows. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-hyperv-server-2016-extended-end-2027-01-12", "citation_text": "Hyper-V Server 2016, released on 15 October 2016, reaches the end of extended support on 12 January 2027, after mainstream support ended on 11 January 2022 (Microsoft, 2021). Source: Microsoft, \"Hyper-V Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2021-08-27)\" (https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2016). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-hyperv-server-2016-extended-end-2027-01-12." }, { "id": "microsoft-lifecycle-hyperv-server-2019-extended-end-2029-01-09", "family": "lifecycle-dates-esu", "statement": "Hyper-V Server 2019, released on 13 November 2018, reaches the end of extended support on 9 January 2029, after mainstream support ended on 9 January 2024 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "9 January 2029", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2029-01-09", "population": "Hyper-V Server 2019 (standalone hypervisor product)", "sample_n": null, "publisher": "Microsoft", "source_title": "Hyper-V Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-05-20)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2019", "source_type": "primary", "source_access": "open", "published_at": "2024-05-20", "accessed_at": "2026-10-14", "quote": "Hyper-V Server 2019 | 11/13/2018 8:00:00 AM | 1/10/2024 6:59:59 AM | 1/10/2029 6:59:59 AM", "locator": "Table 'Support Dates', row 'Hyper-V Server 2019' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-hyperv-server-lifecycle-dates", "history": [], "notes": "Same dates as Windows Server 2019. It is the last standalone Hyper-V Server: Microsoft's lifecycle search for 'Hyper-V' returns six Hyper-V Server products, 2008 to 2019, and none for 2022 or 2025 (saved: api-search-hyper-v.json). The page lists no Extended Security Update rows. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-hyperv-server-2019-extended-end-2029-01-09", "citation_text": "Hyper-V Server 2019, released on 13 November 2018, reaches the end of extended support on 9 January 2029, after mainstream support ended on 9 January 2024 (Microsoft, 2024). Source: Microsoft, \"Hyper-V Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-05-20)\" (https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2019). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-hyperv-server-2019-extended-end-2029-01-09." }, { "id": "microsoft-lifecycle-windows-server-2012-essentials-released-2013-01-02", "family": "lifecycle-dates-esu", "statement": "Windows Server 2012 Essentials was released on 2 January 2013, two months after Windows Server 2012, and shares its lifecycle, which ended extended support on 10 October 2023 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "2 January 2013", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2013-01-02", "population": "Windows Server 2012 Essentials edition", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012", "source_type": "primary", "source_access": "open", "published_at": "2024-09-17", "accessed_at": "2026-10-14", "quote": "Windows Server Essentials released on January 2, 2013.", "locator": "Note at the foot of the page ('Mainstream and Extended support for this product has been extended ... Windows Server Essentials released on January 2, 2013.')", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Essentials is listed among the editions of the Windows Server 2012 page ('Datacenter, Essentials, External Connector, for Embedded Systems, Foundation, Standard'), so it shares the 2012 dates and ESU eligibility is limited to Standard, Datacenter and Embedded (lifecycle FAQ: 'The Standard, Datacenter, and Embedded editions of Windows Server for versions 2012/2012 R2 are eligible for ESUs').", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-essentials-released-2013-01-02", "citation_text": "Windows Server 2012 Essentials was released on 2 January 2013, two months after Windows Server 2012, and shares its lifecycle, which ended extended support on 10 October 2023 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2012-essentials-released-2013-01-02." }, { "id": "microsoft-lifecycle-windows-server-essentials-edition-listed-on-six-version-pages-2012-to-2025", "family": "lifecycle-dates-esu", "statement": "6 Windows Server lifecycle pages, 2012 to 2025, list Essentials as an edition, so Essentials servers follow their version's dates; Microsoft keeps no separate lifecycle page for Windows Server Essentials (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 6, "unit": "Windows Server versions whose lifecycle page lists the Essentials edition", "display_value": "6 versions", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2012-10-30 to 2034-11-14", "population": "Windows Server Essentials edition (small-business edition, 2012 to 2025)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-11-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2025", "source_type": "primary", "source_access": "open", "published_at": "2024-11-04", "accessed_at": "2026-10-14", "quote": "This applies to the following editions: Datacenter, Datacenter: Azure Edition, Essentials, Standard", "locator": "Page header line 'This applies to the following editions' (Windows Server 2025 page; the 2012, 2012 R2, 2016, 2019 and 2022 pages carry the same line with Essentials)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Essentials appears in the edition lists of the Windows Server 2012, 2012 R2, 2016, 2019, 2022 and 2025 lifecycle pages (all saved in raw/lifecycle-dates-esu). A lifecycle search for 'essentials' returns no Windows Server Essentials product, only Windows Essential Business Server 2008 and Windows Server 2008 for Windows Essential Server Solutions (saved: api-search-essentials.json). Essentials editions were not eligible for 2012 ESU (lifecycle FAQ). Windows Small Business Server 2011's lifecycle page shows a start date (9 March 2011) but blank mainstream and extended end dates as of 2026-10-14, so it is not recorded here.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-essentials-edition-listed-on-six-version-pages-2012-to-2025", "citation_text": "6 Windows Server lifecycle pages, 2012 to 2025, list Essentials as an edition, so Essentials servers follow their version's dates; Microsoft keeps no separate lifecycle page for Windows Server Essentials (Microsoft, 2024). Source: Microsoft, \"Windows Server 2025 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-11-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2025). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-essentials-edition-listed-on-six-version-pages-2012-to-2025." }, { "id": "microsoft-lifecycle-windows-server-semi-annual-channel-retired-2022-08-09", "family": "lifecycle-dates-esu", "statement": "Windows Server's Semi-Annual Channel was retired on 9 August 2022, ending the model of a new release every six months that ran from version 1709 in October 2017 to version 20H2 (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "9 August 2022", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2022-08-09", "population": "Windows Server Semi-Annual Channel releases (Datacenter and Standard, Server Core)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server Semi-Annual Channel - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-10-12)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-semiannual-channel", "source_type": "primary", "source_access": "open", "published_at": "2023-10-12", "accessed_at": "2026-10-14", "quote": "Windows Server Semi-Annual Channel | 10/17/2017 8:00:00 AM | 8/10/2022 6:59:59 AM", "locator": "Table 'Support Dates' (Start Date | Retirement Date) and table 'Releases'", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-lifecycle-dates", "history": [], "notes": "Same id and figure as the next-versions-adoption family's record. Prose confirmation on Microsoft's Windows Server Annual Channel lifecycle page: 'The Windows Server Semi-Annual Channel (SAC) was retired on August 9, 2022.' The Releases table lists seven versions: 1709, 1803, 1809, 1903, 1909, 2004 and 20H2 (20H2 ended with the channel; 2004 on 14 December 2021). Each version had 18 months of support. Correction to the other family's statement: the 6:59:59 AM time stamp is UTC, not Pacific. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-semi-annual-channel-retired-2022-08-09", "citation_text": "Windows Server's Semi-Annual Channel was retired on 9 August 2022, ending the model of a new release every six months that ran from version 1709 in October 2017 to version 20H2 (Microsoft, 2023). Source: Microsoft, \"Windows Server Semi-Annual Channel - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-10-12)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-semiannual-channel). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-semi-annual-channel-retired-2022-08-09." }, { "id": "microsoft-lifecycle-windows-server-annual-channel-started-2023-10-24-modern-policy", "family": "lifecycle-dates-esu", "statement": "Windows Server's Annual Channel, the Modern Lifecycle successor to the Semi-Annual Channel, started on 24 October 2023 and has no fixed end date (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "24 October 2023", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10-24", "population": "Windows Server Annual Channel releases (Datacenter)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server Annual Channel - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-10-31)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-annual-channel", "source_type": "primary", "source_access": "open", "published_at": "2023-10-31", "accessed_at": "2026-10-14", "quote": "Windows Server Annual Channel | 10/24/2023 8:00:00 AM | In Support", "locator": "Table 'Support Dates' (Listing | Start Date | Retirement Date)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Page note: 'Beginning in September 2023, Windows Server has two primary release channels available: the Long-Term Servicing Channel (LTSC) and the Annual Channel (AC).' Each Annual Channel release gets 24 months of support (18 mainstream plus 6 extended) per Microsoft's servicing-channels page (next-versions-adoption family). Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-annual-channel-started-2023-10-24-modern-policy", "citation_text": "Windows Server's Annual Channel, the Modern Lifecycle successor to the Semi-Annual Channel, started on 24 October 2023 and has no fixed end date (Microsoft, 2023). Source: Microsoft, \"Windows Server Annual Channel - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-10-31)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-annual-channel). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-annual-channel-started-2023-10-24-modern-policy." }, { "id": "microsoft-lifecycle-windows-server-2022-datacenter-azure-edition-extended-end-2031-10-14", "family": "lifecycle-dates-esu", "statement": "Windows Server 2022 Datacenter: Azure Edition, whose lifecycle started on 2 November 2021, reached the end of mainstream support on 13 October 2026 and reaches the end of extended support on 14 October 2031, the same end dates as Windows Server 2022 (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 October 2031", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2031-10-14", "population": "Windows Server 2022 Datacenter: Azure Edition (Azure and Azure Local virtual machines)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2022 Datacenter: Azure Edition - Microsoft Lifecycle (Microsoft Learn, ms.date 2025-04-15)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2022-datacenter-azure-edition", "source_type": "primary", "source_access": "open", "published_at": "2025-04-15", "accessed_at": "2026-10-14", "quote": "Windows Server 2022 Datacenter: Azure Edition | 11/2/2021 8:00:00 AM | 10/14/2026 6:59:59 AM | 10/15/2031 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2022 Datacenter: Azure Edition' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Its lifecycle starts on 2 November 2021, later than Windows Server 2022's 18 August 2021. The Windows Server 2022 page notes: 'Hotpatching is supported on Windows Server 2022 Datacenter: Azure Edition Core through the end of Mainstream Support' (13 October 2026); the next-versions-adoption family records Microsoft's later extension of that hotpatch support. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2022-datacenter-azure-edition-extended-end-2031-10-14", "citation_text": "Windows Server 2022 Datacenter: Azure Edition, whose lifecycle started on 2 November 2021, reached the end of mainstream support on 13 October 2026 and reaches the end of extended support on 14 October 2031, the same end dates as Windows Server 2022 (Microsoft, 2025). Source: Microsoft, \"Windows Server 2022 Datacenter: Azure Edition - Microsoft Lifecycle (Microsoft Learn, ms.date 2025-04-15)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2022-datacenter-azure-edition). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2022-datacenter-azure-edition-extended-end-2031-10-14." }, { "id": "microsoft-lifecycle-windows-server-2025-datacenter-azure-edition-modern-policy-start-2024-09-10", "family": "lifecycle-dates-esu", "statement": "Windows Server 2025 Datacenter in its Azure edition follows Microsoft's Modern Lifecycle Policy, with a lifecycle start of 10 September 2024 and no fixed end date, unlike the ten-year fixed dates of Windows Server 2025 (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "10 September 2024", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2024-09-10", "population": "Windows Server 2025 Datacenter, Azure edition (Modern Lifecycle Policy)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 Datacenter - Microsoft Lifecycle (Microsoft Learn, ms.date 2025-04-18)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2025-datacenter", "source_type": "primary", "source_access": "open", "published_at": "2025-04-18", "accessed_at": "2026-10-14", "quote": "Windows Server 2025 Datacenter | 9/10/2024 8:00:00 AM | In Support", "locator": "Table 'Support Dates' (Listing | Start Date | Retirement Date)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The page is titled 'Windows Server 2025 Datacenter', states it follows the Modern Lifecycle Policy, and lists its edition as 'Azure'. Under the Modern policy a product stays supported while customers keep it current, with no published end date. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2025-datacenter-azure-edition-modern-policy-start-2024-09-10", "citation_text": "Windows Server 2025 Datacenter in its Azure edition follows Microsoft's Modern Lifecycle Policy, with a lifecycle start of 10 September 2024 and no fixed end date, unlike the ten-year fixed dates of Windows Server 2025 (Microsoft, 2025). Source: Microsoft, \"Windows Server 2025 Datacenter - Microsoft Lifecycle (Microsoft Learn, ms.date 2025-04-18)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2025-datacenter). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-2025-datacenter-azure-edition-modern-policy-start-2024-09-10." }, { "id": "microsoft-lifecycle-sql-server-2008-extended-end-2019-07-09", "family": "lifecycle-dates-esu", "statement": "SQL Server 2008, released on 6 November 2008, reached the end of extended support on 9 July 2019, after mainstream support ended on 8 July 2014 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "9 July 2019", "display_label": "", "display_hook": null, "row_label": "SQL Server 2008: end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2019-07-09", "population": "SQL Server 2008, all editions", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft SQL Server 2008 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/microsoft-sql-server-2008", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Microsoft SQL Server 2008 | 11/6/2008 8:00:00 AM | 7/9/2014 6:59:59 AM | 7/10/2019 6:59:59 AM", "locator": "Table 'Support Dates', row 'Microsoft SQL Server 2008' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-sql-server-lifecycle-dates", "history": [], "notes": "Four ESU years followed, the fourth on Azure only (to 11 July 2023). Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2008-extended-end-2019-07-09", "citation_text": "SQL Server 2008, released on 6 November 2008, reached the end of extended support on 9 July 2019, after mainstream support ended on 8 July 2014 (Microsoft, 2022). Source: Microsoft, \"Microsoft SQL Server 2008 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/microsoft-sql-server-2008). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2008-extended-end-2019-07-09." }, { "id": "microsoft-lifecycle-sql-server-2008-r2-extended-end-2019-07-09", "family": "lifecycle-dates-esu", "statement": "SQL Server 2008 R2, released on 20 July 2010, reached the end of extended support on 9 July 2019, after mainstream support ended on 8 July 2014 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "9 July 2019", "display_label": "", "display_hook": null, "row_label": "SQL Server 2008 R2: end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2019-07-09", "population": "SQL Server 2008 R2, all editions", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft SQL Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/microsoft-sql-server-2008-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Microsoft SQL Server 2008 R2 | 7/20/2010 8:00:00 AM | 7/9/2014 6:59:59 AM | 7/10/2019 6:59:59 AM", "locator": "Table 'Support Dates', row 'Microsoft SQL Server 2008 R2' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-sql-server-lifecycle-dates", "history": [], "notes": "Same end dates as SQL Server 2008; four ESU years followed, the fourth on Azure only. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2008-r2-extended-end-2019-07-09", "citation_text": "SQL Server 2008 R2, released on 20 July 2010, reached the end of extended support on 9 July 2019, after mainstream support ended on 8 July 2014 (Microsoft, 2022). Source: Microsoft, \"Microsoft SQL Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/microsoft-sql-server-2008-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2008-r2-extended-end-2019-07-09." }, { "id": "microsoft-lifecycle-sql-server-2012-extended-end-2022-07-12", "family": "lifecycle-dates-esu", "statement": "SQL Server 2012, released on 20 May 2012, reached the end of extended support on 12 July 2022, after mainstream support ended on 11 July 2017 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "12 July 2022", "display_label": "", "display_hook": null, "row_label": "SQL Server 2012: end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2022-07-12", "population": "SQL Server 2012, all editions", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft SQL Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/microsoft-sql-server-2012", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Microsoft SQL Server 2012 | 5/20/2012 8:00:00 AM | 7/12/2017 6:59:59 AM | 7/13/2022 6:59:59 AM", "locator": "Table 'Support Dates', row 'Microsoft SQL Server 2012' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-sql-server-lifecycle-dates", "history": [], "notes": "Three ESU years followed, to 8 July 2025. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2012-extended-end-2022-07-12", "citation_text": "SQL Server 2012, released on 20 May 2012, reached the end of extended support on 12 July 2022, after mainstream support ended on 11 July 2017 (Microsoft, 2022). Source: Microsoft, \"Microsoft SQL Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/microsoft-sql-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2012-extended-end-2022-07-12." }, { "id": "microsoft-lifecycle-sql-server-2014-extended-end-2024-07-09", "family": "lifecycle-dates-esu", "statement": "SQL Server 2014, released on 5 June 2014, reached the end of extended support on 9 July 2024, after mainstream support ended on 9 July 2019 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "9 July 2024", "display_label": "", "display_hook": null, "row_label": "SQL Server 2014: end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2024-07-09", "population": "SQL Server 2014, all editions", "sample_n": null, "publisher": "Microsoft", "source_title": "SQL Server 2014 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/sql-server-2014", "source_type": "primary", "source_access": "open", "published_at": "2024-09-17", "accessed_at": "2026-10-14", "quote": "SQL Server 2014 | 6/5/2014 8:00:00 AM | 7/10/2019 6:59:59 AM | 7/10/2024 6:59:59 AM", "locator": "Table 'Support Dates', row 'SQL Server 2014' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-sql-server-lifecycle-dates", "history": [], "notes": "Three ESU years follow, to 12 July 2027. The install-base-audits family holds Lansweeper's June 2024 SQL Server version mix taken three weeks before this date. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2014-extended-end-2024-07-09", "citation_text": "SQL Server 2014, released on 5 June 2014, reached the end of extended support on 9 July 2024, after mainstream support ended on 9 July 2019 (Microsoft, 2024). Source: Microsoft, \"SQL Server 2014 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/sql-server-2014). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2014-extended-end-2024-07-09." }, { "id": "microsoft-lifecycle-sql-server-2016-extended-end-2026-07-14", "family": "lifecycle-dates-esu", "statement": "SQL Server 2016, released on 1 June 2016, reached the end of extended support on 14 July 2026, after mainstream support ended on 13 July 2021 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 July 2026", "display_label": "", "display_hook": null, "row_label": "SQL Server 2016: end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2026-07-14", "population": "SQL Server 2016, all editions", "sample_n": null, "publisher": "Microsoft", "source_title": "SQL Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-27)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/sql-server-2016", "source_type": "primary", "source_access": "open", "published_at": "2024-09-27", "accessed_at": "2026-10-14", "quote": "SQL Server 2016 | 6/1/2016 8:00:00 AM | 7/14/2021 6:59:59 AM | 7/15/2026 6:59:59 AM", "locator": "Table 'Support Dates', row 'SQL Server 2016' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-sql-server-lifecycle-dates", "history": [], "notes": "Prose confirmation: Microsoft's end-of-support-2026 list names 'SQL Server 2016' under July 14, 2026. Paid ESU (no longer free on Azure VMs) runs for up to three years. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2016-extended-end-2026-07-14", "citation_text": "SQL Server 2016, released on 1 June 2016, reached the end of extended support on 14 July 2026, after mainstream support ended on 13 July 2021 (Microsoft, 2024). Source: Microsoft, \"SQL Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-27)\" (https://learn.microsoft.com/en-us/lifecycle/products/sql-server-2016). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2016-extended-end-2026-07-14." }, { "id": "microsoft-lifecycle-sql-server-2017-extended-end-2027-10-12", "family": "lifecycle-dates-esu", "statement": "SQL Server 2017, released on 29 September 2017, reaches the end of extended support on 12 October 2027, after mainstream support ended on 11 October 2022 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "12 October 2027", "display_label": "", "display_hook": null, "row_label": "SQL Server 2017: end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2027-10-12", "population": "SQL Server 2017, all editions", "sample_n": null, "publisher": "Microsoft", "source_title": "SQL Server 2017 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-10)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/sql-server-2017", "source_type": "primary", "source_access": "open", "published_at": "2022-10-10", "accessed_at": "2026-10-14", "quote": "SQL Server 2017 | 9/29/2017 8:00:00 AM | 10/12/2022 6:59:59 AM | 10/13/2027 6:59:59 AM", "locator": "Table 'Support Dates', row 'SQL Server 2017' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-sql-server-lifecycle-dates", "history": [], "notes": "Prose confirmation: end-of-support-2027 list, 'SQL Server 2017 ... October 12, 2027'. Page note: 'Starting with SQL Server 2017, no Service Packs will be released.' Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2017-extended-end-2027-10-12", "citation_text": "SQL Server 2017, released on 29 September 2017, reaches the end of extended support on 12 October 2027, after mainstream support ended on 11 October 2022 (Microsoft, 2022). Source: Microsoft, \"SQL Server 2017 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-10)\" (https://learn.microsoft.com/en-us/lifecycle/products/sql-server-2017). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2017-extended-end-2027-10-12." }, { "id": "microsoft-lifecycle-sql-server-2019-extended-end-2030-01-08", "family": "lifecycle-dates-esu", "statement": "SQL Server 2019, released on 4 November 2019, reaches the end of extended support on 8 January 2030, after mainstream support ended on 28 February 2025 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "8 January 2030", "display_label": "", "display_hook": null, "row_label": "SQL Server 2019: end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2030-01-08", "population": "SQL Server 2019, all editions", "sample_n": null, "publisher": "Microsoft", "source_title": "SQL Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-10)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/sql-server-2019", "source_type": "primary", "source_access": "open", "published_at": "2022-10-10", "accessed_at": "2026-10-14", "quote": "SQL Server 2019 | 11/4/2019 8:00:00 AM | 3/1/2025 6:59:59 AM | 1/9/2030 6:59:59 AM", "locator": "Table 'Support Dates', row 'SQL Server 2019' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-sql-server-lifecycle-dates", "history": [], "notes": "Mainstream support ended on 28 February 2025, an off-cycle date rather than a Patch Tuesday. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2019-extended-end-2030-01-08", "citation_text": "SQL Server 2019, released on 4 November 2019, reaches the end of extended support on 8 January 2030, after mainstream support ended on 28 February 2025 (Microsoft, 2022). Source: Microsoft, \"SQL Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-10)\" (https://learn.microsoft.com/en-us/lifecycle/products/sql-server-2019). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2019-extended-end-2030-01-08." }, { "id": "microsoft-lifecycle-sql-server-2022-extended-end-2033-01-11", "family": "lifecycle-dates-esu", "statement": "SQL Server 2022, released on 16 November 2022, reaches the end of extended support on 11 January 2033, after mainstream support ends on 11 January 2028 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "11 January 2033", "display_label": "", "display_hook": null, "row_label": "SQL Server 2022: end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2033-01-11", "population": "SQL Server 2022, all editions", "sample_n": null, "publisher": "Microsoft", "source_title": "SQL Server 2022 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/sql-server-2022", "source_type": "primary", "source_access": "open", "published_at": "2022-11-17", "accessed_at": "2026-10-14", "quote": "SQL Server 2022 | 11/16/2022 8:00:00 AM | 1/12/2028 6:59:59 AM | 1/12/2033 6:59:59 AM", "locator": "Table 'Support Dates', row 'SQL Server 2022' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-sql-server-lifecycle-dates", "history": [], "notes": "Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2022-extended-end-2033-01-11", "citation_text": "SQL Server 2022, released on 16 November 2022, reaches the end of extended support on 11 January 2033, after mainstream support ends on 11 January 2028 (Microsoft, 2022). Source: Microsoft, \"SQL Server 2022 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/sql-server-2022). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2022-extended-end-2033-01-11." }, { "id": "microsoft-lifecycle-sql-server-2008-r2-esu-year-4-azure-only-ended-2023-07-11", "family": "lifecycle-dates-esu", "statement": "4 years of Extended Security Updates followed SQL Server 2008 and 2008 R2's 9 July 2019 end of support, the fourth on Azure only, ending on 11 July 2023 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": 4, "unit": "years of Extended Security Updates after end of extended support (SQL Server 2008/R2, including the Azure-only year)", "display_value": "4 years", "display_label": "", "display_hook": null, "row_label": "SQL Server 2008 and 2008 R2: ESU years, the fourth on Azure only", "publisher_short": null, "geography": "Worldwide", "period": "2019-07-09 to 2023-07-11", "population": "SQL Server 2008 and 2008 R2 with Extended Security Updates", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft SQL Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/microsoft-sql-server-2008-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Extended Security Update Year 4 (Azure only) | 7/13/2022 8:00:00 AM | 7/12/2023 6:59:59 AM", "locator": "Table 'Releases', row 'Extended Security Update Year 4 (Azure only)' (transcribed with pipes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-sql-server-esu-dates", "history": [], "notes": "The SQL Server 2008 page has identical rows. Years 1 to 3 ended 14 July 2020, 13 July 2021 and 12 July 2022. Prose confirmation: Microsoft's end-of-support-2023 list names 'Microsoft SQL Server 2008, Extended Security Update Year 4 (Azure only)'. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2008-r2-esu-year-4-azure-only-ended-2023-07-11", "citation_text": "4 years of Extended Security Updates followed SQL Server 2008 and 2008 R2's 9 July 2019 end of support, the fourth on Azure only, ending on 11 July 2023 (Microsoft, 2022). Source: Microsoft, \"Microsoft SQL Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/microsoft-sql-server-2008-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2008-r2-esu-year-4-azure-only-ended-2023-07-11." }, { "id": "microsoft-lifecycle-sql-server-2012-esu-year-3-end-2025-07-08", "family": "lifecycle-dates-esu", "statement": "SQL Server 2012 Extended Security Updates ended on 8 July 2025 after three years, with no Azure-only fourth year (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "8 July 2025", "display_label": "", "display_hook": null, "row_label": "SQL Server 2012: ESU ended", "publisher_short": null, "geography": "Worldwide", "period": "2025-07-08", "population": "SQL Server 2012 with Extended Security Updates", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft SQL Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/microsoft-sql-server-2012", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Extended Security Update Year 3 | 7/10/2024 8:00:00 AM | 7/9/2025 6:59:59 AM", "locator": "Table 'Releases', row 'Extended Security Update Year 3' (transcribed with pipes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-sql-server-esu-dates", "history": [], "notes": "Year 1 ran 13 July 2022 to 11 July 2023 and Year 2 to 9 July 2024. The 2023 lifecycle FAQ footnote: 'SQL Server 2012 Year 1 ESUs were 75% of the full license price'. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2012-esu-year-3-end-2025-07-08", "citation_text": "SQL Server 2012 Extended Security Updates ended on 8 July 2025 after three years, with no Azure-only fourth year (Microsoft, 2022). Source: Microsoft, \"Microsoft SQL Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/microsoft-sql-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2012-esu-year-3-end-2025-07-08." }, { "id": "microsoft-lifecycle-sql-server-2014-esu-year-3-end-2027-07-12", "family": "lifecycle-dates-esu", "statement": "SQL Server 2014 Extended Security Updates run until 12 July 2027, three years after its 9 July 2024 end of extended support (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "12 July 2027", "display_label": "", "display_hook": null, "row_label": "SQL Server 2014: ESU ends", "publisher_short": null, "geography": "Worldwide", "period": "2027-07-12", "population": "SQL Server 2014 with Extended Security Updates", "sample_n": null, "publisher": "Microsoft", "source_title": "SQL Server 2014 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/sql-server-2014", "source_type": "primary", "source_access": "open", "published_at": "2024-09-17", "accessed_at": "2026-10-14", "quote": "Extended Security Updates Year 3 | 7/15/2026 8:00:00 AM | 7/13/2027 6:59:59 AM", "locator": "Table 'Releases', row 'Extended Security Updates Year 3' (transcribed with pipes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-sql-server-esu-dates", "history": [], "notes": "Prose confirmation: Microsoft's end-of-support-2027 list, 'SQL Server 2014, Extended Security Updates Year 3 ... July 12, 2027', and the ESU product page, 'July 12, 2027 SQL Server 2014 Extended Security Updates end.' SQL Server 2014 ESUs remain free on Azure VMs. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2014-esu-year-3-end-2027-07-12", "citation_text": "SQL Server 2014 Extended Security Updates run until 12 July 2027, three years after its 9 July 2024 end of extended support (Microsoft, 2024). Source: Microsoft, \"SQL Server 2014 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/sql-server-2014). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-sql-server-2014-esu-year-3-end-2027-07-12." }, { "id": "microsoft-esu-page-2026-sql-server-2016-esu-started-2026-07-14", "family": "lifecycle-dates-esu", "statement": "SQL Server 2016 Extended Security Updates started when its extended support ended on 14 July 2026, three months before Windows Server 2012's last ESU year closed (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 July 2026", "display_label": "", "display_hook": null, "row_label": "SQL Server 2016: ESU started", "publisher_short": null, "geography": "Worldwide", "period": "2026-07-14", "population": "SQL Server 2016 with Extended Security Updates", "sample_n": null, "publisher": "Microsoft", "source_title": "Plan your Windows Server and SQL Server end of support (Microsoft, Extended Security Updates product page)", "source_url": "https://www.microsoft.com/en-us/windows-server/extended-security-updates", "source_type": "primary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "July 14, 2026 SQL Server 2016 Extended Support ends. SQL Server 2016 Extended Security Updates start.", "locator": "Section 'What dates do I need to keep in mind?', first item", "derived": false, "formula": null, "headline": false, "series": "microsoft-sql-server-esu-dates", "history": [], "notes": "Undated page; published_at is the access date. The same list: 'Oct 13, 2026 Windows Server 2012 Extended Security Updates end.' 'Jan 12, 2027 Windows Server 2016 Extended Support ends. Windows Server 2016 Extended Security Updates start.' 'July 12, 2027 SQL Server 2014 Extended Security Updates end.' The Azure Arc pricing page dates the SQL Server 2016 ESU term from 15 July 2026 for back-billing (the first day after end of support).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-esu-page-2026-sql-server-2016-esu-started-2026-07-14", "citation_text": "SQL Server 2016 Extended Security Updates started when its extended support ended on 14 July 2026, three months before Windows Server 2012's last ESU year closed (Microsoft, 2026). Source: Microsoft, \"Plan your Windows Server and SQL Server end of support (Microsoft, Extended Security Updates product page)\" (https://www.microsoft.com/en-us/windows-server/extended-security-updates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-esu-page-2026-sql-server-2016-esu-started-2026-07-14." }, { "id": "microsoft-lifecycle-exchange-server-2016-extended-end-2025-10-14", "family": "lifecycle-dates-esu", "statement": "Exchange Server 2016, released on 1 October 2015, reached the end of extended support on 14 October 2025, after mainstream support ended on 13 October 2020 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 October 2025", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-10-14", "population": "Exchange Server 2016, Standard and Enterprise editions", "sample_n": null, "publisher": "Microsoft", "source_title": "Exchange Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-08-29)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/exchange-server-2016", "source_type": "primary", "source_access": "open", "published_at": "2024-08-29", "accessed_at": "2026-10-14", "quote": "Exchange Server 2016 | 10/1/2015 8:00:00 AM | 10/14/2020 6:59:59 AM | 10/15/2025 6:59:59 AM", "locator": "Table 'Support Dates', row 'Exchange Server 2016' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-exchange-server-lifecycle-dates", "history": [], "notes": "Exchange Server 2016 and 2019 left extended support on the same day; Exchange 2016 got ten years. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-exchange-server-2016-extended-end-2025-10-14", "citation_text": "Exchange Server 2016, released on 1 October 2015, reached the end of extended support on 14 October 2025, after mainstream support ended on 13 October 2020 (Microsoft, 2024). Source: Microsoft, \"Exchange Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-08-29)\" (https://learn.microsoft.com/en-us/lifecycle/products/exchange-server-2016). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-exchange-server-2016-extended-end-2025-10-14." }, { "id": "microsoft-lifecycle-exchange-server-2019-extended-end-2025-10-14", "family": "lifecycle-dates-esu", "statement": "Exchange Server 2019, released on 22 October 2018, reached the end of extended support on 14 October 2025, after mainstream support ended on 9 January 2024 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "14 October 2025", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-10-14", "population": "Exchange Server 2019, Standard and Enterprise editions", "sample_n": null, "publisher": "Microsoft", "source_title": "Exchange Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-08-28)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/exchange-server-2019", "source_type": "primary", "source_access": "open", "published_at": "2024-08-28", "accessed_at": "2026-10-14", "quote": "Exchange Server 2019 | 10/22/2018 8:00:00 AM | 1/10/2024 6:59:59 AM | 10/15/2025 6:59:59 AM", "locator": "Table 'Support Dates', row 'Exchange Server 2019' (transcribed with pipes from the HTML datetime attributes)", "derived": false, "formula": null, "headline": false, "series": "microsoft-exchange-server-lifecycle-dates", "history": [], "notes": "Exchange Server 2019 got under seven years (22 October 2018 to 14 October 2025), short of the ten-year Fixed Policy pattern, and ended on the same day as Exchange 2016; mainstream support lasted five years and extended support under two. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-exchange-server-2019-extended-end-2025-10-14", "citation_text": "Exchange Server 2019, released on 22 October 2018, reached the end of extended support on 14 October 2025, after mainstream support ended on 9 January 2024 (Microsoft, 2024). Source: Microsoft, \"Exchange Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-08-28)\" (https://learn.microsoft.com/en-us/lifecycle/products/exchange-server-2019). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-exchange-server-2019-extended-end-2025-10-14." }, { "id": "microsoft-lifecycle-exchange-server-subscription-edition-released-2025-07-01-modern-policy", "family": "lifecycle-dates-esu", "statement": "Exchange Server Subscription Edition was released on 1 July 2025 under the Modern Lifecycle Policy, with no fixed end date, a little over three months before Exchange Server 2016 and 2019 left extended support (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": null, "unit": "date", "display_value": "1 July 2025", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-07-01", "population": "Exchange Server Subscription Edition", "sample_n": null, "publisher": "Microsoft", "source_title": "Exchange Server Subscription Edition - Microsoft Lifecycle (Microsoft Learn, ms.date 2025-07-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/exchange-server-subscription-edition", "source_type": "primary", "source_access": "open", "published_at": "2025-07-01", "accessed_at": "2026-10-14", "quote": "Exchange Server Subscription Edition | 7/1/2025 8:00:00 AM | In Support", "locator": "Table 'Support Dates' (Listing | Start Date | Retirement Date)", "derived": false, "formula": null, "headline": false, "series": "microsoft-exchange-server-lifecycle-dates", "history": [], "notes": "The page states it follows the Modern Lifecycle Policy; Exchange 2016 and 2019 left extended support on 14 October 2025. Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-exchange-server-subscription-edition-released-2025-07-01-modern-policy", "citation_text": "Exchange Server Subscription Edition was released on 1 July 2025 under the Modern Lifecycle Policy, with no fixed end date, a little over three months before Exchange Server 2016 and 2019 left extended support (Microsoft, 2025). Source: Microsoft, \"Exchange Server Subscription Edition - Microsoft Lifecycle (Microsoft Learn, ms.date 2025-07-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/exchange-server-subscription-edition). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-exchange-server-subscription-edition-released-2025-07-01-modern-policy." }, { "id": "derived-days-since-windows-server-2012-esu-end-at-2026-10-14-1-day", "family": "lifecycle-dates-esu", "statement": "1 day had passed on 14 October 2026, when this page's figures were checked, since Windows Server 2012 and 2012 R2's last paid Extended Security Update year ended on 13 October 2026 (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 1, "unit": "days since the end of Windows Server 2012/R2 ESU Year 3 (as of 2026-10-14)", "display_value": "1 day", "display_label": "", "display_hook": null, "row_label": "Since Windows Server 2012's ESU ended, at 14 October 2026", "publisher_short": null, "geography": "Worldwide", "period": "2026-10-14", "population": "Windows Server 2012 and 2012 R2 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2", "source_type": "primary", "source_access": "open", "published_at": "2023-01-17", "accessed_at": "2026-10-14", "quote": "Extended Security Update Year 3 | 10/15/2025 8:00:00 AM | 10/14/2026 6:59:59 AM", "locator": "Table 'Releases', row 'Extended Security Update Year 3'", "derived": true, "formula": "2026-10-14 (collection date) minus 2026-10-13 (ESU Year 3 end, Windows Server 2012 R2 lifecycle page) = 1 day", "headline": false, "series": "", "history": [], "notes": "Recompute on publication: the page's datePublished is 2026-10-10 (owner), when the figure was 3 days before the end; at 2026-10-14 it is 1 day after. Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-days-since-windows-server-2012-esu-end-at-2026-10-14-1-day", "citation_text": "1 day had passed on 14 October 2026, when this page's figures were checked, since Windows Server 2012 and 2012 R2's last paid Extended Security Update year ended on 13 October 2026 (Microsoft, 2023). Source: Microsoft, \"Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-days-since-windows-server-2012-esu-end-at-2026-10-14-1-day." }, { "id": "derived-days-from-2026-10-14-to-windows-server-2016-extended-end-90-days", "family": "lifecycle-dates-esu", "statement": "90 days separated 14 October 2026, when this page's figures were checked, from Windows Server 2016's end of extended support on 12 January 2027 (Microsoft, 2024).", "short_statement": "Windows Server 2016 reaches the end of extended support on **12 January 2027**, 90 days after 14 October 2026 (Microsoft).", "short_refs": null, "value": 90, "unit": "days from 2026-10-14 to Windows Server 2016's end of extended support", "display_value": "90 days", "display_label": "Counted from 14 October 2026 (Microsoft lifecycle page date)", "display_hook": null, "row_label": "To Windows Server 2016's end of support, from 14 October 2026", "publisher_short": null, "geography": "Worldwide", "period": "2026-10-14 to 2027-01-12", "population": "Windows Server 2016 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2016", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2016 | 10/15/2016 8:00:00 AM | 1/12/2022 6:59:59 AM | 1/13/2027 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2016', Extended End Date column", "derived": true, "formula": "2027-01-12 (Windows Server 2016 extended end, lifecycle page) minus 2026-10-14 (collection date) = 90 days (17 + 30 + 31 + 12)", "headline": true, "series": "", "history": [], "notes": "Recompute on publication and on each refresh (it falls by one a day). Azure Arc ESU billing for Windows Server 2016 starts the next day, 13 January 2027. Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-days-from-2026-10-14-to-windows-server-2016-extended-end-90-days", "citation_text": "90 days separated 14 October 2026, when this page's figures were checked, from Windows Server 2016's end of extended support on 12 January 2027 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2016). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-days-from-2026-10-14-to-windows-server-2016-extended-end-90-days." }, { "id": "derived-windows-server-2012-r2-total-support-including-esu-4705-days", "family": "lifecycle-dates-esu", "statement": "4,705 days (about 12.9 years) is how long Windows Server 2012 R2 could receive security updates for customers who paid all three ESU years, from its 25 November 2013 release to the end of paid ESU on 13 October 2026, of which 1,099 days came from ESU (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 4705, "unit": "days from release to the end of the last ESU year (Windows Server 2012 R2)", "display_value": "4,705 days", "display_label": "25 November 2013 to 13 October 2026 (Microsoft lifecycle page)", "display_hook": null, "row_label": "Windows Server 2012 R2: release to end of paid ESU", "publisher_short": null, "geography": "Worldwide", "period": "2013-11-25 to 2026-10-13", "population": "Windows Server 2012 R2 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2", "source_type": "primary", "source_access": "open", "published_at": "2023-01-17", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 R2 | 11/25/2013 8:00:00 AM | 10/10/2018 6:59:59 AM | 10/11/2023 6:59:59 AM ... Extended Security Update Year 3 | 10/15/2025 8:00:00 AM | 10/14/2026 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2012 R2'; table 'Releases', row 'Extended Security Update Year 3'", "derived": true, "formula": "2026-10-13 (ESU Year 3 end) minus 2013-11-25 (start date) = 4705 days; standard support 2013-11-25 to 2023-10-10 = 3606 days; ESU 2023-10-10 to 2026-10-13 = 1099 days", "headline": false, "series": "", "history": [], "notes": "Standard support alone was 3,606 days (9.9 years), under the ten-year LTSC norm because R2 shared Windows Server 2012's end dates; ESU added 23% to the total. Windows Server 2012 (non-R2, released 30 October 2012) ran 5,096 days to the same end. Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2012-r2-total-support-including-esu-4705-days", "citation_text": "4,705 days (about 12.9 years) is how long Windows Server 2012 R2 could receive security updates for customers who paid all three ESU years, from its 25 November 2013 release to the end of paid ESU on 13 October 2026, of which 1,099 days came from ESU (Microsoft, 2023). Source: Microsoft, \"Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2012-r2-total-support-including-esu-4705-days." }, { "id": "derived-windows-server-2003-years-of-support-release-to-extended-end-12-1", "family": "lifecycle-dates-esu", "statement": "12.1 years of support, release to end of extended support and before any ESU, is Windows Server 2003's span: it ran from 28 May 2003 to 14 July 2015 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": 12.1, "unit": "years from lifecycle start to end of extended support (before ESU)", "display_value": "12.1 years", "display_label": "Windows Server 2003", "display_hook": null, "row_label": "Windows Server 2003: release to end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2003-05-28 to 2015-07-14", "population": "Windows Server 2003 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2003 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-", "source_type": "primary", "source_access": "open", "published_at": "2022-10-25", "accessed_at": "2026-10-14", "quote": "Windows Server 2003 | 5/28/2003 8:00:00 AM | 7/14/2010 6:59:59 AM | 7/15/2015 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2003', Start Date and Extended End Date columns", "derived": true, "formula": "(2015-07-14 minus 2003-05-28) = 4430 days / 365.25 = 12.13 years", "headline": false, "series": "windows-server-years-of-support", "history": [], "notes": "Chart note: ten points; for an eight-point chart drop the two R2 releases (2003 R2 and 2012 R2), which inherited their base version's end dates. Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2003-years-of-support-release-to-extended-end-12-1", "citation_text": "12.1 years of support, release to end of extended support and before any ESU, is Windows Server 2003's span: it ran from 28 May 2003 to 14 July 2015 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2003 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2003-years-of-support-release-to-extended-end-12-1." }, { "id": "derived-windows-server-2003-r2-years-of-support-release-to-extended-end-9-4", "family": "lifecycle-dates-esu", "statement": "9.4 years of support, release to end of extended support and before any ESU, is Windows Server 2003 R2's span: it ran from 5 March 2006 to 14 July 2015 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": 9.4, "unit": "years from lifecycle start to end of extended support (before ESU)", "display_value": "9.4 years", "display_label": "Windows Server 2003 R2", "display_hook": null, "row_label": "Windows Server 2003 R2: release to end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2006-03-05 to 2015-07-14", "population": "Windows Server 2003 R2 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2003 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-10-25", "accessed_at": "2026-10-14", "quote": "Windows Server 2003 R2 | 3/5/2006 8:00:00 AM | 7/14/2010 6:59:59 AM | 7/15/2015 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2003 R2', Start Date and Extended End Date columns", "derived": true, "formula": "(2015-07-14 minus 2006-03-05) = 3418 days / 365.25 = 9.36 years", "headline": false, "series": "windows-server-years-of-support", "history": [], "notes": "Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2003-r2-years-of-support-release-to-extended-end-9-4", "citation_text": "9.4 years of support, release to end of extended support and before any ESU, is Windows Server 2003 R2's span: it ran from 5 March 2006 to 14 July 2015 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2003 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-10-25)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2003-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2003-r2-years-of-support-release-to-extended-end-9-4." }, { "id": "derived-windows-server-2008-years-of-support-release-to-extended-end-11-7", "family": "lifecycle-dates-esu", "statement": "11.7 years of support, release to end of extended support and before any ESU, is Windows Server 2008's span: it ran from 6 May 2008 to 14 January 2020 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": 11.7, "unit": "years from lifecycle start to end of extended support (before ESU)", "display_value": "11.7 years", "display_label": "Windows Server 2008", "display_hook": null, "row_label": "Windows Server 2008: release to end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2008-05-06 to 2020-01-14", "population": "Windows Server 2008 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2008 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Windows Server 2008 | 5/6/2008 8:00:00 AM | 1/14/2015 6:59:59 AM | 1/15/2020 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2008', Start Date and Extended End Date columns", "derived": true, "formula": "(2020-01-14 minus 2008-05-06) = 4270 days / 365.25 = 11.69 years", "headline": false, "series": "windows-server-years-of-support", "history": [], "notes": "Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2008-years-of-support-release-to-extended-end-11-7", "citation_text": "11.7 years of support, release to end of extended support and before any ESU, is Windows Server 2008's span: it ran from 6 May 2008 to 14 January 2020 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2008 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2008-years-of-support-release-to-extended-end-11-7." }, { "id": "derived-windows-server-2008-r2-years-of-support-release-to-extended-end-10-2", "family": "lifecycle-dates-esu", "statement": "10.2 years of support, release to end of extended support and before any ESU, is Windows Server 2008 R2's span: it ran from 22 October 2009 to 14 January 2020 (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": 10.2, "unit": "years from lifecycle start to end of extended support (before ESU)", "display_value": "10.2 years", "display_label": "Windows Server 2008 R2", "display_hook": null, "row_label": "Windows Server 2008 R2: release to end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2009-10-22 to 2020-01-14", "population": "Windows Server 2008 R2 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008-r2", "source_type": "primary", "source_access": "open", "published_at": "2022-11-01", "accessed_at": "2026-10-14", "quote": "Windows Server 2008 R2 | 10/22/2009 8:00:00 AM | 1/14/2015 6:59:59 AM | 1/15/2020 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2008 R2', Start Date and Extended End Date columns", "derived": true, "formula": "(2020-01-14 minus 2009-10-22) = 3736 days / 365.25 = 10.23 years", "headline": false, "series": "windows-server-years-of-support", "history": [], "notes": "Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2008-r2-years-of-support-release-to-extended-end-10-2", "citation_text": "10.2 years of support, release to end of extended support and before any ESU, is Windows Server 2008 R2's span: it ran from 22 October 2009 to 14 January 2020 (Microsoft, 2022). Source: Microsoft, \"Windows Server 2008 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2022-11-01)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2008-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2008-r2-years-of-support-release-to-extended-end-10-2." }, { "id": "derived-windows-server-2012-years-of-support-release-to-extended-end-10-9", "family": "lifecycle-dates-esu", "statement": "10.9 years of support, release to end of extended support and before any ESU, is Windows Server 2012's span: it ran from 30 October 2012 to 10 October 2023 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 10.9, "unit": "years from lifecycle start to end of extended support (before ESU)", "display_value": "10.9 years", "display_label": "Windows Server 2012", "display_hook": null, "row_label": "Windows Server 2012: release to end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2012-10-30 to 2023-10-10", "population": "Windows Server 2012 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012", "source_type": "primary", "source_access": "open", "published_at": "2024-09-17", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 | 10/30/2012 8:00:00 AM | 10/10/2018 6:59:59 AM | 10/11/2023 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2012', Start Date and Extended End Date columns", "derived": true, "formula": "(2023-10-10 minus 2012-10-30) = 3997 days / 365.25 = 10.94 years", "headline": false, "series": "windows-server-years-of-support", "history": [], "notes": "Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2012-years-of-support-release-to-extended-end-10-9", "citation_text": "10.9 years of support, release to end of extended support and before any ESU, is Windows Server 2012's span: it ran from 30 October 2012 to 10 October 2023 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2012 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-09-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2012-years-of-support-release-to-extended-end-10-9." }, { "id": "derived-windows-server-2012-r2-years-of-support-release-to-extended-end-9-9", "family": "lifecycle-dates-esu", "statement": "9.9 years of support, release to end of extended support and before any ESU, is Windows Server 2012 R2's span: it ran from 25 November 2013 to 10 October 2023 (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 9.9, "unit": "years from lifecycle start to end of extended support (before ESU)", "display_value": "9.9 years", "display_label": "Windows Server 2012 R2", "display_hook": null, "row_label": "Windows Server 2012 R2: release to end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2013-11-25 to 2023-10-10", "population": "Windows Server 2012 R2 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2", "source_type": "primary", "source_access": "open", "published_at": "2023-01-17", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 R2 | 11/25/2013 8:00:00 AM | 10/10/2018 6:59:59 AM | 10/11/2023 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2012 R2', Start Date and Extended End Date columns", "derived": true, "formula": "(2023-10-10 minus 2013-11-25) = 3606 days / 365.25 = 9.87 years", "headline": false, "series": "windows-server-years-of-support", "history": [], "notes": "Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2012-r2-years-of-support-release-to-extended-end-9-9", "citation_text": "9.9 years of support, release to end of extended support and before any ESU, is Windows Server 2012 R2's span: it ran from 25 November 2013 to 10 October 2023 (Microsoft, 2023). Source: Microsoft, \"Windows Server 2012 R2 - Microsoft Lifecycle (Microsoft Learn, ms.date 2023-01-17)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2012-r2-years-of-support-release-to-extended-end-9-9." }, { "id": "derived-windows-server-2016-years-of-support-release-to-extended-end-10-2", "family": "lifecycle-dates-esu", "statement": "10.2 years of support, release to end of extended support and before any ESU, is Windows Server 2016's span: it runs from 15 October 2016 to 12 January 2027 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 10.2, "unit": "years from lifecycle start to end of extended support (before ESU)", "display_value": "10.2 years", "display_label": "Windows Server 2016", "display_hook": null, "row_label": "Windows Server 2016: release to end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2016-10-15 to 2027-01-12", "population": "Windows Server 2016 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2016", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2016 | 10/15/2016 8:00:00 AM | 1/12/2022 6:59:59 AM | 1/13/2027 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2016', Start Date and Extended End Date columns", "derived": true, "formula": "(2027-01-12 minus 2016-10-15) = 3741 days / 365.25 = 10.24 years", "headline": false, "series": "windows-server-years-of-support", "history": [], "notes": "Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2016-years-of-support-release-to-extended-end-10-2", "citation_text": "10.2 years of support, release to end of extended support and before any ESU, is Windows Server 2016's span: it runs from 15 October 2016 to 12 January 2027 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2016 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2016). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2016-years-of-support-release-to-extended-end-10-2." }, { "id": "derived-windows-server-2019-years-of-support-release-to-extended-end-10-2", "family": "lifecycle-dates-esu", "statement": "10.2 years of support, release to end of extended support and before any ESU, is Windows Server 2019's span: it runs from 13 November 2018 to 9 January 2029 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 10.2, "unit": "years from lifecycle start to end of extended support (before ESU)", "display_value": "10.2 years", "display_label": "Windows Server 2019", "display_hook": null, "row_label": "Windows Server 2019: release to end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2018-11-13 to 2029-01-09", "population": "Windows Server 2019 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2019", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2019 | 11/13/2018 8:00:00 AM | 1/10/2024 6:59:59 AM | 1/10/2029 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2019', Start Date and Extended End Date columns", "derived": true, "formula": "(2029-01-09 minus 2018-11-13) = 3710 days / 365.25 = 10.16 years", "headline": false, "series": "windows-server-years-of-support", "history": [], "notes": "Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2019-years-of-support-release-to-extended-end-10-2", "citation_text": "10.2 years of support, release to end of extended support and before any ESU, is Windows Server 2019's span: it runs from 13 November 2018 to 9 January 2029 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2019 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2019). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2019-years-of-support-release-to-extended-end-10-2." }, { "id": "derived-windows-server-2022-years-of-support-release-to-extended-end-10-2", "family": "lifecycle-dates-esu", "statement": "10.2 years of support, release to end of extended support and before any ESU, is Windows Server 2022's span: it runs from 18 August 2021 to 14 October 2031 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 10.2, "unit": "years from lifecycle start to end of extended support (before ESU)", "display_value": "10.2 years", "display_label": "Windows Server 2022", "display_hook": null, "row_label": "Windows Server 2022: release to end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2021-08-18 to 2031-10-14", "population": "Windows Server 2022 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2022 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2022", "source_type": "primary", "source_access": "open", "published_at": "2024-06-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2022 | 8/18/2021 8:00:00 AM | 10/14/2026 6:59:59 AM | 10/15/2031 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2022', Start Date and Extended End Date columns", "derived": true, "formula": "(2031-10-14 minus 2021-08-18) = 3709 days / 365.25 = 10.15 years", "headline": false, "series": "windows-server-years-of-support", "history": [], "notes": "Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2022-years-of-support-release-to-extended-end-10-2", "citation_text": "10.2 years of support, release to end of extended support and before any ESU, is Windows Server 2022's span: it runs from 18 August 2021 to 14 October 2031 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2022 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-06-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2022). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2022-years-of-support-release-to-extended-end-10-2." }, { "id": "derived-windows-server-2025-years-of-support-release-to-extended-end-10-0", "family": "lifecycle-dates-esu", "statement": "10.0 years of support, release to end of extended support and before any ESU, is Windows Server 2025's span: it runs from 1 November 2024 to 14 November 2034 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 10, "unit": "years from lifecycle start to end of extended support (before ESU)", "display_value": "10.0 years", "display_label": "Windows Server 2025", "display_hook": null, "row_label": "Windows Server 2025: release to end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2024-11-01 to 2034-11-14", "population": "Windows Server 2025 (Microsoft lifecycle dates)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-11-04)", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2025", "source_type": "primary", "source_access": "open", "published_at": "2024-11-04", "accessed_at": "2026-10-14", "quote": "Windows Server 2025 | 11/1/2024 8:00:00 AM | 11/14/2029 6:59:59 AM | 11/15/2034 6:59:59 AM", "locator": "Table 'Support Dates', row 'Windows Server 2025', Start Date and Extended End Date columns", "derived": true, "formula": "(2034-11-14 minus 2024-11-01) = 3665 days / 365.25 = 10.03 years", "headline": false, "series": "windows-server-years-of-support", "history": [], "notes": "Day counts use the rendered Pacific dates (see the lifecycle records); Microsoft's lifecycle pages carry UTC timestamps in the HTML (start dates at 8:00:00 AM UTC, end dates at 6:59:59 AM UTC on the following day) and render them in Pacific time (America/Los_Angeles); the date recorded here is the rendered Pacific date, the date Microsoft uses in prose (for example its end-of-support lists).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2025-years-of-support-release-to-extended-end-10-0", "citation_text": "10.0 years of support, release to end of extended support and before any ESU, is Windows Server 2025's span: it runs from 1 November 2024 to 14 November 2034 (Microsoft, 2024). Source: Microsoft, \"Windows Server 2025 - Microsoft Lifecycle (Microsoft Learn, ms.date 2024-11-04)\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2025). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-windows-server-2025-years-of-support-release-to-extended-end-10-0." }, { "id": "microsoft-2026-04-windows-server-2025-in-place-upgrade-up-to-four-versions", "family": "migration-effort-cost", "statement": "4 versions is the furthest a non-clustered Windows Server can jump in one in-place upgrade to Windows Server 2025, which accepts direct upgrades from Windows Server 2012 R2 and later, per Microsoft's upgrade documentation updated April 2026 (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 4, "unit": "Windows Server versions spanned by one in-place upgrade (maximum, non-clustered, target 2025)", "display_value": "4 versions", "display_label": "Microsoft Learn, Windows Server upgrade paths, April 2026", "display_hook": null, "row_label": "To Windows Server 2025: versions back it accepts", "publisher_short": null, "geography": "Worldwide", "period": "2026-04", "population": "Microsoft's documented in-place upgrade paths for Windows Server (documentation, not a survey)", "sample_n": null, "publisher": "Microsoft", "source_title": "Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview", "source_type": "primary", "source_access": "open", "published_at": "2026-04-14", "accessed_at": "2026-10-14", "quote": "Starting with Windows Server 2025, nonclustered systems can upgrade up to four versions at a time. You can upgrade directly to Windows Server 2025 from Windows Server 2012 R2 and later.", "locator": "Section 'Supported in-place upgrade paths by version', first paragraph (also the 'Version gap' bullet)", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-in-place-upgrade-span", "history": [], "notes": "Primary documentation (ms.date 2026-04-14); the page was fetched on 2026-10-14 and saved as raw/migration-effort-cost/ms-upgrade-overview.html (canonical URL .../install-upgrade-migrate). Same id as on the data-migration-failure-rate page. Before Windows Server 2025 the limit was two versions. The same page adds: 'Unlike Windows client, each Windows Server upgrade requires a separate license.' Microsoft's Windows Server team calls this 'N-4' support (Tech Community, 23 September 2025).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-windows-server-2025-in-place-upgrade-up-to-four-versions", "citation_text": "4 versions is the furthest a non-clustered Windows Server can jump in one in-place upgrade to Windows Server 2025, which accepts direct upgrades from Windows Server 2012 R2 and later, per Microsoft's upgrade documentation updated April 2026 (Microsoft, 2026). Source: Microsoft, \"Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)\" (https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-windows-server-2025-in-place-upgrade-up-to-four-versions." }, { "id": "microsoft-2026-04-windows-server-2022-and-earlier-in-place-upgrade-up-to-two-versions", "family": "migration-effort-cost", "statement": "2 versions was the most a non-clustered in-place upgrade could jump for Windows Server 2022 and earlier targets, so Windows Server 2012 R2 could reach 2016 or 2019 but not 2022 in one step, per Microsoft's upgrade documentation (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 2, "unit": "Windows Server versions spanned by one in-place upgrade (maximum, non-clustered, targets up to 2022)", "display_value": "2 versions", "display_label": "", "display_hook": null, "row_label": "To Windows Server 2022 or earlier: versions back", "publisher_short": null, "geography": "Worldwide", "period": "2026-04", "population": "Microsoft's documented in-place upgrade paths for Windows Server (documentation, not a survey)", "sample_n": null, "publisher": "Microsoft", "source_title": "Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview", "source_type": "primary", "source_access": "open", "published_at": "2026-04-14", "accessed_at": "2026-10-14", "quote": "For Windows Server 2022 and earlier, nonclustered systems can upgrade up to two versions at a time.", "locator": "Section 'Supported in-place upgrade paths by version', first paragraph", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-in-place-upgrade-span", "history": [], "notes": "Primary documentation (ms.date 2026-04-14); the page was fetched on 2026-10-14 and saved as raw/migration-effort-cost/ms-upgrade-overview.html (canonical URL .../install-upgrade-migrate). Same id as on the data-migration-failure-rate page. The installation-media table shows 2012 R2 to 2016 and 2019 as Yes and 2012 R2 to 2022 as No.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-windows-server-2022-and-earlier-in-place-upgrade-up-to-two-versions", "citation_text": "2 versions was the most a non-clustered in-place upgrade could jump for Windows Server 2022 and earlier targets, so Windows Server 2012 R2 could reach 2016 or 2019 but not 2022 in one step, per Microsoft's upgrade documentation (Microsoft, 2026). Source: Microsoft, \"Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)\" (https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-windows-server-2022-and-earlier-in-place-upgrade-up-to-two-versions." }, { "id": "microsoft-2026-04-cluster-os-rolling-upgrade-one-version-at-a-time", "family": "migration-effort-cost", "statement": "1 version at a time is the limit for a failover cluster moving between Windows Server releases with a Cluster OS rolling upgrade, against up to four for non-clustered servers targeting Windows Server 2025 (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 1, "unit": "Windows Server versions spanned by one cluster rolling upgrade (maximum)", "display_value": "1 version", "display_label": "", "display_hook": null, "row_label": "Failover cluster, rolling upgrade: versions at a time", "publisher_short": null, "geography": "Worldwide", "period": "2026-04", "population": "Microsoft's documented in-place upgrade paths for Windows Server (documentation, not a survey)", "sample_n": null, "publisher": "Microsoft", "source_title": "Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview", "source_type": "primary", "source_access": "open", "published_at": "2026-04-14", "accessed_at": "2026-10-14", "quote": "If you're using a Cluster OS rolling upgrade, you can only upgrade one version at a time.", "locator": "Section 'Supported in-place upgrade paths by version', first paragraph", "derived": false, "formula": null, "headline": false, "series": "microsoft-windows-server-in-place-upgrade-span", "history": [], "notes": "Primary documentation (ms.date 2026-04-14); the page was fetched on 2026-10-14 and saved as raw/migration-effort-cost/ms-upgrade-overview.html (canonical URL .../install-upgrade-migrate). Same id as on the data-migration-failure-rate page. A Windows Server 2016 cluster therefore needs three rolling upgrades (2019, 2022, 2025) to reach 2025.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-cluster-os-rolling-upgrade-one-version-at-a-time", "citation_text": "1 version at a time is the limit for a failover cluster moving between Windows Server releases with a Cluster OS rolling upgrade, against up to four for non-clustered servers targeting Windows Server 2025 (Microsoft, 2026). Source: Microsoft, \"Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)\" (https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-cluster-os-rolling-upgrade-one-version-at-a-time." }, { "id": "microsoft-2026-04-windows-server-2012-in-place-upgrade-only-to-2012-r2-or-2016", "family": "migration-effort-cost", "statement": "0 supported in-place upgrade paths lead from Windows Server 2012 (non-R2) to Windows Server 2019, 2022 or 2025; its only in-place targets are 2012 R2 and 2016, so reaching a current version needs two upgrades or a migration (Microsoft, 2026).", "short_statement": "Windows Server 2012 upgrades in place only to 2012 R2 or 2016, so reaching 2025 takes **two upgrades** or a migration (Microsoft, 2026).", "short_refs": null, "value": 0, "unit": "supported direct in-place upgrade paths from Windows Server 2012 to 2019, 2022 or 2025", "display_value": "0 of 3", "display_label": "Microsoft Learn upgrade table, April 2026", "display_hook": null, "row_label": "From Windows Server 2012: paths to 2019, 2022 or 2025", "publisher_short": null, "geography": "Worldwide", "period": "2026-04", "population": "Microsoft's documented in-place upgrade paths for Windows Server (documentation, not a survey)", "sample_n": null, "publisher": "Microsoft", "source_title": "Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview", "source_type": "primary", "source_access": "open", "published_at": "2026-04-14", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 | Yes | Yes | No | No | No", "locator": "Table 'Installation media', row 'Windows Server 2012' (columns: 2012 R2, 2016, 2019, 2022, 2025)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Primary documentation (ms.date 2026-04-14); the page was fetched on 2026-10-14 and saved as raw/migration-effort-cost/ms-upgrade-overview.html (canonical URL .../install-upgrade-migrate). Same id as on the data-migration-failure-rate page. Table row transcribed with pipes. Windows Server 2012 R2 in the same table: No, Yes, Yes, No, Yes.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-windows-server-2012-in-place-upgrade-only-to-2012-r2-or-2016", "citation_text": "0 supported in-place upgrade paths lead from Windows Server 2012 (non-R2) to Windows Server 2019, 2022 or 2025; its only in-place targets are 2012 R2 and 2016, so reaching a current version needs two upgrades or a migration (Microsoft, 2026). Source: Microsoft, \"Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)\" (https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-windows-server-2012-in-place-upgrade-only-to-2012-r2-or-2016." }, { "id": "microsoft-2026-04-windows-server-2012-r2-in-place-upgrade-to-2016-2019-or-2025-not-2022", "family": "migration-effort-cost", "statement": "3 in-place upgrade targets are supported from Windows Server 2012 R2 (2016, 2019 and 2025) but not Windows Server 2022, because 2025's four-version limit reaches further back than 2022's two (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 3, "unit": "supported in-place upgrade targets from Windows Server 2012 R2 (installation media)", "display_value": "3 targets (2016, 2019, 2025)", "display_label": "", "display_hook": null, "row_label": "From Windows Server 2012 R2: targets", "publisher_short": null, "geography": "Worldwide", "period": "2026-04", "population": "Microsoft's documented in-place upgrade paths for Windows Server (documentation, not a survey)", "sample_n": null, "publisher": "Microsoft", "source_title": "Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview", "source_type": "primary", "source_access": "open", "published_at": "2026-04-14", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 R2 | No | Yes | Yes | No | Yes", "locator": "Table 'Installation media', row 'Windows Server 2012 R2' (columns: 2012 R2, 2016, 2019, 2022, 2025)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Primary documentation (ms.date 2026-04-14); the page was fetched on 2026-10-14 and saved as raw/migration-effort-cost/ms-upgrade-overview.html (canonical URL .../install-upgrade-migrate). Table row transcribed with pipes. Windows Server 2016 row: No, No, Yes, Yes, Yes; 2019: No, No, No, Yes, Yes; 2022: No, No, No, No, Yes.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-windows-server-2012-r2-in-place-upgrade-to-2016-2019-or-2025-not-2022", "citation_text": "3 in-place upgrade targets are supported from Windows Server 2012 R2 (2016, 2019 and 2025) but not Windows Server 2022, because 2025's four-version limit reaches further back than 2022's two (Microsoft, 2026). Source: Microsoft, \"Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)\" (https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-windows-server-2012-r2-in-place-upgrade-to-2016-2019-or-2025-not-2022." }, { "id": "microsoft-2026-04-windows-update-upgrade-to-2025-only-from-2019-or-2022", "family": "migration-effort-cost", "statement": "2 Windows Server versions, 2019 and 2022, can take the in-place upgrade to Windows Server 2025 as a feature update through Windows Update once the March 2026 cumulative update is installed; older versions need installation media (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 2, "unit": "Windows Server versions eligible for the Windows Update feature-update path to Windows Server 2025", "display_value": "2 versions (2019, 2022)", "display_label": "", "display_hook": null, "row_label": "Through Windows Update to 2025: versions", "publisher_short": null, "geography": "Worldwide", "period": "2026-04", "population": "Microsoft's documented in-place upgrade paths for Windows Server (documentation, not a survey)", "sample_n": null, "publisher": "Microsoft", "source_title": "Perform an in-place upgrade of Windows Server (Microsoft Learn, ms.date 2026-04-14)", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-in-place", "source_type": "primary", "source_access": "open", "published_at": "2026-04-14", "accessed_at": "2026-10-14", "quote": "To upgrade to Windows Server 2025 or later by using Windows Update, you need: Windows Server 2019 or Windows Server 2022 on all servers you want to upgrade.", "locator": "Section 'Prerequisites', tab 'Windows Update'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Primary documentation fetched 2026-10-14 (raw/migration-effort-cost/ms-perform-in-place-upgrade.html). Required updates: KB5078766 (Windows Server 2022) or KB5078752 (Windows Server 2019), both March 2026, plus an opt-in registry value AllowWindowsServerFeatureUpdate. The same page says not to upgrade Active Directory domain controllers in place and that 'downtime is required during the upgrade'. The Windows Update tab of the upgrade-path table lists only 2019 and 2022 as sources.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-windows-update-upgrade-to-2025-only-from-2019-or-2022", "citation_text": "2 Windows Server versions, 2019 and 2022, can take the in-place upgrade to Windows Server 2025 as a feature update through Windows Update once the March 2026 cumulative update is installed; older versions need installation media (Microsoft, 2026). Source: Microsoft, \"Perform an in-place upgrade of Windows Server (Microsoft Learn, ms.date 2026-04-14)\" (https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-in-place). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-windows-update-upgrade-to-2025-only-from-2019-or-2022." }, { "id": "microsoft-2026-05-05-mc1301827-windows-update-path-to-2025-announced", "family": "migration-effort-cost", "statement": "Microsoft announced on 5 May 2026 that Windows Server 2019 and 2022 can be upgraded in place to Windows Server 2025 through Windows Update without installation media, eighteen months after Windows Server 2025's release (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "date of Microsoft 365 Message Center post MC1301827", "display_value": "5 May 2026", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-05-05", "population": "Microsoft 365 Message Center announcement (not a survey)", "sample_n": null, "publisher": "Microsoft (Message Center post, archived by mc.merill.net)", "source_title": "MC1301827 - Upgrade to Windows Server 2025, now via Windows Update (Microsoft 365 Message Center Archive)", "source_url": "https://mc.merill.net/message/MC1301827", "source_type": "primary", "source_access": "open", "published_at": "2026-05-05", "accessed_at": "2026-10-14", "quote": "Windows Update can be used to perform an in-place upgrade of Windows Server without installation media.", "locator": "Section 'More information', first sentence; 'Published May 5, 2026'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The Message Center itself needs a tenant sign-in; mc.merill.net is a public mirror of the posts. Windows Server 2025 reached general availability on 1 November 2024 (lifecycle family), so the media-free path arrived about 18 months later. The post says an administrator must add a registry key and click Download and Install; it is not pushed automatically. Saved as raw/migration-effort-cost/mc1301827.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-05-05-mc1301827-windows-update-path-to-2025-announced", "citation_text": "Microsoft announced on 5 May 2026 that Windows Server 2019 and 2022 can be upgraded in place to Windows Server 2025 through Windows Update without installation media, eighteen months after Windows Server 2025's release (Microsoft, 2026). Source: Microsoft (Message Center post, archived by mc.merill.net), \"MC1301827 - Upgrade to Windows Server 2025, now via Windows Update (Microsoft 365 Message Center Archive)\" (https://mc.merill.net/message/MC1301827). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-05-05-mc1301827-windows-update-path-to-2025-announced." }, { "id": "microsoft-2026-04-no-in-place-upgrade-across-languages-or-32-to-64-bit", "family": "migration-effort-cost", "statement": "0 in-place upgrade paths cross languages or architectures: Microsoft supports no in-place upgrade of a licensed Windows Server from one language to another or from 32-bit to 64-bit (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 0, "unit": "supported in-place upgrade paths across languages or from 32-bit to 64-bit", "display_value": "0", "display_label": "", "display_hook": null, "row_label": "Across languages or from 32-bit to 64-bit: paths", "publisher_short": null, "geography": "Worldwide", "period": "2026-04", "population": "Microsoft's documented in-place upgrade paths for Windows Server (documentation, not a survey)", "sample_n": null, "publisher": "Microsoft", "source_title": "Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview", "source_type": "primary", "source_access": "open", "published_at": "2026-04-14", "accessed_at": "2026-10-14", "quote": "Upgrades from 32-bit to 64-bit architectures aren't supported. All releases since Windows Server 2008 R2 are 64-bit only. Upgrades from one language to another aren't supported.", "locator": "Section 'Upgrade restrictions for licensed versions of Windows Server', first two bullets", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Primary documentation (ms.date 2026-04-14); the page was fetched on 2026-10-14 and saved as raw/migration-effort-cost/ms-upgrade-overview.html (canonical URL .../install-upgrade-migrate). The same list rules out switching between Server Core and Desktop Experience during an upgrade, upgrades from Windows Storage Server editions, from boot-from-VHD installs and from previews, and upgrades into evaluation copies. A 32-bit Windows Server 2008 (non-R2) or 2003 server must be migrated.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-no-in-place-upgrade-across-languages-or-32-to-64-bit", "citation_text": "0 in-place upgrade paths cross languages or architectures: Microsoft supports no in-place upgrade of a licensed Windows Server from one language to another or from 32-bit to 64-bit (Microsoft, 2026). Source: Microsoft, \"Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)\" (https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-no-in-place-upgrade-across-languages-or-32-to-64-bit." }, { "id": "microsoft-2026-04-in-place-upgrade-keeps-edition-standard-to-datacenter-only", "family": "migration-effort-cost", "statement": "An in-place upgrade keeps the Windows Server edition by default and can move Standard up to Datacenter but never Datacenter down to Standard, per Microsoft's upgrade restrictions updated April 2026 (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "edition rule for in-place upgrades (no figure)", "display_value": "Standard to Datacenter only", "display_label": "", "display_hook": null, "row_label": "Edition changes allowed", "publisher_short": null, "geography": "Worldwide", "period": "2026-04", "population": "Microsoft's documented in-place upgrade paths for Windows Server (documentation, not a survey)", "sample_n": null, "publisher": "Microsoft", "source_title": "Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview", "source_type": "primary", "source_access": "open", "published_at": "2026-04-14", "accessed_at": "2026-10-14", "quote": "You can change from Standard to Datacenter or Datacenter: Azure Edition, or from Datacenter to Datacenter: Azure Edition, during an upgrade. You can't downgrade from Datacenter to Standard", "locator": "Section 'Upgrade restrictions for licensed versions of Windows Server', edition bullets", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Primary documentation (ms.date 2026-04-14); the page was fetched on 2026-10-14 and saved as raw/migration-effort-cost/ms-upgrade-overview.html (canonical URL .../install-upgrade-migrate). Rule, not a statistic: kept for the page's in-place-versus-migration table. The page also says 'By default, an upgrade retains the existing edition' and that a domain controller cannot be converted to a retail version.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-in-place-upgrade-keeps-edition-standard-to-datacenter-only", "citation_text": "An in-place upgrade keeps the Windows Server edition by default and can move Standard up to Datacenter but never Datacenter down to Standard, per Microsoft's upgrade restrictions updated April 2026 (Microsoft, 2026). Source: Microsoft, \"Plan Your Windows Server Upgrade Path (Microsoft Learn, ms.date 2026-04-14; canonical install-upgrade-migrate)\" (https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-in-place-upgrade-keeps-edition-standard-to-datacenter-only." }, { "id": "microsoft-2026-04-10-of-16-server-roles-cannot-migrate-without-downtime", "family": "migration-effort-cost", "statement": "10 of the 16 server roles in Microsoft's upgrade and migration matrix, including DNS, IIS, file services and Remote Desktop Services, cannot be migrated to a new Windows Server without downtime (Microsoft, 2026).", "short_statement": "**10** of 16 server roles, including DNS and IIS, cannot move to a new server without downtime, Microsoft says.", "short_refs": null, "value": 10, "unit": "server roles (of 16 in Microsoft's matrix) whose migration cannot be completed without downtime", "display_value": "10 of 16", "display_label": "Microsoft Learn upgrade and migration matrix, April 2026", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-04", "population": "Server roles listed in Microsoft's Windows Server upgrade and migration matrix (documentation, not a survey)", "sample_n": null, "publisher": "Microsoft", "source_title": "Upgrade and migrate roles and features in Windows Server (Microsoft Learn, ms.date 2026-04-27)", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-migrate-roles-features", "source_type": "primary", "source_access": "open", "published_at": "2026-04-27", "accessed_at": "2026-10-14", "quote": "Server Role | Upgradeable in-place? | Migration Supported? | Can migration be completed without downtime?", "locator": "Table 'Upgrade and migration matrix', column 'Can migration be completed without downtime?'", "derived": true, "formula": "Count of the 16 rows in the 'Upgrade and migration matrix' whose 'Can migration be completed without downtime?' cell is No: AD Certificate Services, AD Federation Services (No, new nodes added to the farm), AD Rights Management Services, DNS Server, File and Storage Services, Print and Fax Services, Remote Desktop Services, Web Server (IIS), Windows Server Essentials Experience, Windows Server Update Services = 10. Yes: AD Domain Services, AD Lightweight Directory Services, DHCP Server = 3. Yes only with Cluster OS Rolling Upgrade: Failover Clustering, Hyper-V, Work Folders = 3. Page fetched 2026-10-14.", "headline": false, "series": "", "history": [], "notes": "Primary documentation (raw/migration-effort-cost/ms-migrate-roles-and-features.html). Derived count by the collector; Microsoft does not state the total.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-10-of-16-server-roles-cannot-migrate-without-downtime", "citation_text": "10 of the 16 server roles in Microsoft's upgrade and migration matrix, including DNS, IIS, file services and Remote Desktop Services, cannot be migrated to a new Windows Server without downtime (Microsoft, 2026). Source: Microsoft, \"Upgrade and migrate roles and features in Windows Server (Microsoft Learn, ms.date 2026-04-27)\" (https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-migrate-roles-features). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-10-of-16-server-roles-cannot-migrate-without-downtime." }, { "id": "microsoft-2026-04-2-of-16-server-roles-cannot-upgrade-in-place-ad-ds-not-recommended", "family": "migration-effort-cost", "statement": "2 of the 16 server roles in Microsoft's upgrade and migration matrix (AD Federation Services and Print and Fax Services) cannot be upgraded in place, and Microsoft advises against upgrading Active Directory domain controllers in place (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 2, "unit": "server roles (of 16 in Microsoft's matrix) not upgradeable in place", "display_value": "2 of 16", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-04", "population": "Server roles listed in Microsoft's Windows Server upgrade and migration matrix (documentation, not a survey)", "sample_n": null, "publisher": "Microsoft", "source_title": "Upgrade and migrate roles and features in Windows Server (Microsoft Learn, ms.date 2026-04-27)", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-migrate-roles-features", "source_type": "primary", "source_access": "open", "published_at": "2026-04-27", "accessed_at": "2026-10-14", "quote": "Active Directory Domain Services | Not recommended. Use clean OS install to get AD performance and feature improvements.", "locator": "Table 'Upgrade and migration matrix', column 'Upgradeable in-place?'", "derived": true, "formula": "Count of the 16 rows whose 'Upgradeable in-place?' cell is No: Active Directory Federation Services, Print and Fax Services = 2; Active Directory Domain Services = 'Not recommended'; the other 13 = Yes (Failover Clustering and Hyper-V via Cluster OS Rolling Upgrade). Page fetched 2026-10-14.", "headline": false, "series": "", "history": [], "notes": "Primary documentation (raw/migration-effort-cost/ms-migrate-roles-and-features.html). Microsoft's in-place upgrade page repeats: 'Don't use in-place upgrade for servers that run Active Directory Domain Services (AD DS).'", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-2-of-16-server-roles-cannot-upgrade-in-place-ad-ds-not-recommended", "citation_text": "2 of the 16 server roles in Microsoft's upgrade and migration matrix (AD Federation Services and Print and Fax Services) cannot be upgraded in place, and Microsoft advises against upgrading Active Directory domain controllers in place (Microsoft, 2026). Source: Microsoft, \"Upgrade and migrate roles and features in Windows Server (Microsoft Learn, ms.date 2026-04-27)\" (https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-migrate-roles-features). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-04-2-of-16-server-roles-cannot-upgrade-in-place-ad-ds-not-recommended." }, { "id": "microsoft-2025-09-23-in-place-upgrade-to-2025-under-an-hour-per-server", "family": "migration-effort-cost", "statement": "Under an hour per server is Microsoft's estimate for a media-based in-place upgrade to Windows Server 2025, though its Windows Server team warns the process may take several hours (Microsoft, 2025).", "short_statement": "Microsoft estimates an in-place upgrade to Windows Server 2025 at **under an hour** per server, though it may take several hours.", "short_refs": null, "value": 1, "unit": "hours per server (Microsoft's typical estimate for a media-based in-place upgrade to Windows Server 2025)", "display_value": "Under 1 hour", "display_label": "Microsoft Windows Server team, September 2025", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-09", "population": "Microsoft's guidance for media-based in-place upgrades (vendor estimate, not a measurement)", "sample_n": null, "publisher": "Microsoft (Windows Server team blog)", "source_title": "Upgrading to Windows Server 2025 from Windows Server 2012 R2, 2016, 2019, or 2022 using Media (ISO) (Rob Hindman, Microsoft Tech Community, 23 September 2025)", "source_url": "https://techcommunity.microsoft.com/blog/windowsservernewsandbestpractices/upgrading-to-windows-server-2025-from-windows-server-2012-r2-2016-2019-or-2022-u/4456406", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-09-23", "accessed_at": "2026-10-14", "quote": "This process takes under an hour per server, depending on the capabilities of the server and the applications installed on it.", "locator": "Section 'About media-based upgrade to Windows Server 2025', first paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The live post was fetched on 2026-10-14 (raw/migration-effort-cost/ms-techcommunity-4456406.html, body rendered by script) and the Wayback snapshot of 13 February 2026 holds the readable text (wayback-techcommunity-4456406-20260213.txt). Microsoft's claim about its own product, not measured data. The same post: 'Although the average time to upgrade a server is typically an hour, the process may take several hours' and 'the upgrade is not 100% perfect and can fail, so a backup is strongly recommended'. It opens: 'Windows Server 2025 adoption is off to an incredibly fast start' (no figure).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-09-23-in-place-upgrade-to-2025-under-an-hour-per-server", "citation_text": "Under an hour per server is Microsoft's estimate for a media-based in-place upgrade to Windows Server 2025, though its Windows Server team warns the process may take several hours (Microsoft, 2025). Source: Microsoft (Windows Server team blog), \"Upgrading to Windows Server 2025 from Windows Server 2012 R2, 2016, 2019, or 2022 using Media (ISO) (Rob Hindman, Microsoft Tech Community, 23 September 2025)\" (https://techcommunity.microsoft.com/blog/windowsservernewsandbestpractices/upgrading-to-windows-server-2025-from-windows-server-2012-r2-2016-2019-or-2022-u/4456406). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-09-23-in-place-upgrade-to-2025-under-an-hour-per-server." }, { "id": "microsoft-2025-09-23-windows-server-2012-r2-hardware-about-15-years-old", "family": "migration-effort-cost", "statement": "About 15 years old is Microsoft's estimate for a physical server still running Windows Server 2012 R2, which it says was probably bought around 2010 or 2011, in its September 2025 upgrade guidance (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 15, "unit": "years (Microsoft's estimated age of a physical server running Windows Server 2012 R2)", "display_value": "About 15 years", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-09", "population": "Microsoft's assumption about physical servers running Windows Server 2012 R2 (not a survey)", "sample_n": null, "publisher": "Microsoft (Windows Server team blog)", "source_title": "Upgrading to Windows Server 2025 from Windows Server 2012 R2, 2016, 2019, or 2022 using Media (ISO) (Rob Hindman, Microsoft Tech Community, 23 September 2025)", "source_url": "https://techcommunity.microsoft.com/blog/windowsservernewsandbestpractices/upgrading-to-windows-server-2025-from-windows-server-2012-r2-2016-2019-or-2022-u/4456406", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-09-23", "accessed_at": "2026-10-14", "quote": "If your server runs Windows Server 2012 R2, it was probably purchased around 2010 or 2011", "locator": "Section 'Upgrading Physical or Virtual', second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The live post was fetched on 2026-10-14 (raw/migration-effort-cost/ms-techcommunity-4456406.html, body rendered by script) and the Wayback snapshot of 13 February 2026 holds the readable text (wayback-techcommunity-4456406-20260213.txt). Microsoft's claim about its own product, not measured data. The sentence continues 'meaning it's now about 15 years old', and advises checking every network adapter, HBA, storage controller and PCIe card for Windows Server 2025 drivers. Caution: Windows Server 2012 R2 shipped in October 2013, so hardware bought in 2010 or 2011 originally ran an earlier version; the estimate is Microsoft's, not measured.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-09-23-windows-server-2012-r2-hardware-about-15-years-old", "citation_text": "About 15 years old is Microsoft's estimate for a physical server still running Windows Server 2012 R2, which it says was probably bought around 2010 or 2011, in its September 2025 upgrade guidance (Microsoft, 2025). Source: Microsoft (Windows Server team blog), \"Upgrading to Windows Server 2025 from Windows Server 2012 R2, 2016, 2019, or 2022 using Media (ISO) (Rob Hindman, Microsoft Tech Community, 23 September 2025)\" (https://techcommunity.microsoft.com/blog/windowsservernewsandbestpractices/upgrading-to-windows-server-2025-from-windows-server-2012-r2-2016-2019-or-2022-u/4456406). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-09-23-windows-server-2012-r2-hardware-about-15-years-old." }, { "id": "microsoft-2024-06-storage-migration-service-23-source-releases-back-to-server-2003", "family": "migration-effort-cost", "statement": "23 Windows Server releases and editions, back to Windows Server 2003 and Small Business Server 2003 R2, are supported sources for Microsoft's Storage Migration Service, which needs an orchestrator running Windows Server 2019 or later (Microsoft, 2024).", "short_statement": "Microsoft's Storage Migration Service accepts **23** source releases, back to Windows Server 2003.", "short_refs": null, "value": 23, "unit": "source operating systems supported by Storage Migration Service", "display_value": "23 source versions", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2024-06", "population": "Microsoft's documented Storage Migration Service source operating systems (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Storage Migration Service overview (Microsoft Learn, ms.date 2024-06-25)", "source_url": "https://learn.microsoft.com/en-us/windows-server/storage/storage-migration-service/overview", "source_type": "primary", "source_access": "open", "published_at": "2024-06-25", "accessed_at": "2026-10-14", "quote": "The source server must run one of the following operating systems:", "locator": "Section 'Requirements for source servers', list", "derived": true, "formula": "Count of the list under 'Requirements for source servers': Windows Server Semi-Annual Channel, 2025, 2022, 2019, 2016, 2012 R2, 2012, 2008 R2, 2008, 2003 R2, 2003; Small Business Server 2003 R2, 2008, 2011; Windows Server Essentials 2012, 2012 R2, 2016, 2019; Windows Storage Server 2008, 2008 R2, 2012, 2012 R2, 2016 = 23. Page fetched 2026-10-14.", "headline": false, "series": "", "history": [], "notes": "Primary documentation (raw/migration-effort-cost/ms-storage-migration-service-overview.html). Storage Migration Service inventories, transfers and optionally cuts over file servers; it cannot cut over from domain controllers (Small Business Server and Essentials are domain controllers). Destinations: Windows Server 2012 R2 to 2025 in the list, though the page recommends 2019 or later and notes that 2016 'support will end in January 2027'. Failover clusters back to 2008 R2, Samba Linux servers and NetApp ONTAP 9 can also be sources.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2024-06-storage-migration-service-23-source-releases-back-to-server-2003", "citation_text": "23 Windows Server releases and editions, back to Windows Server 2003 and Small Business Server 2003 R2, are supported sources for Microsoft's Storage Migration Service, which needs an orchestrator running Windows Server 2019 or later (Microsoft, 2024). Source: Microsoft, \"Storage Migration Service overview (Microsoft Learn, ms.date 2024-06-25)\" (https://learn.microsoft.com/en-us/windows-server/storage/storage-migration-service/overview). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2024-06-storage-migration-service-23-source-releases-back-to-server-2003." }, { "id": "microsoft-2026-05-azure-migrate-free-service", "family": "migration-effort-cost", "statement": "$0 is Microsoft's charge for Azure Migrate, its service for discovering, assessing and migrating on-premises servers to Azure, though partner tools used through it may charge (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 0, "unit": "USD charged by Microsoft for Azure Migrate discovery, assessment and migration", "display_value": "Free", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-05", "population": "Microsoft's Azure Migrate service terms (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "About Azure Migrate (Microsoft Learn, ms.date 2026-05-18)", "source_url": "https://learn.microsoft.com/en-us/azure/migrate/migrate-services-overview", "source_type": "primary", "source_access": "open", "published_at": "2026-05-18", "accessed_at": "2026-10-14", "quote": "Free service: Azure Migrate is a free service that you can use to:", "locator": "Section 'Benefits of Azure Migrate', bullet 'Free service'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Primary documentation (raw/migration-effort-cost/ms-azure-migrate-overview.html). The list ends: 'Migrate the workloads by using in-product, Microsoft, and partner migration tools. (Partner tools might charge you for using their services.)' Azure compute and storage after migration are billed normally. Microsoft's Azure Hybrid Benefit page also calls it 'the free Azure Migrate tool'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-05-azure-migrate-free-service", "citation_text": "$0 is Microsoft's charge for Azure Migrate, its service for discovering, assessing and migrating on-premises servers to Azure, though partner tools used through it may charge (Microsoft, 2026). Source: Microsoft, \"About Azure Migrate (Microsoft Learn, ms.date 2026-05-18)\" (https://learn.microsoft.com/en-us/azure/migrate/migrate-services-overview). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-05-azure-migrate-free-service." }, { "id": "spiceworks-2015-03-server-2003-migration-spending-100-billion-usd", "family": "migration-effort-cost", "statement": "$100 billion of migration-related spending on hardware, software, cloud and services was Spiceworks' extrapolation of what leaving Windows Server 2003 would cost businesses, from its January 2015 survey of 1,300 IT professionals (Spiceworks via eWeek, 2015).", "short_statement": "Spiceworks put the cost of leaving Windows Server 2003 at **$100 billion** across businesses, in 2015.", "short_refs": null, "value": 100000000000, "unit": "USD estimated total Windows Server 2003 migration-related spending (Spiceworks extrapolation)", "display_value": "$100 billion", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America, EMEA and Asia Pacific", "period": "2015-01", "population": "Extrapolation from 1,300 business and IT professionals surveyed by Spiceworks in January 2015", "sample_n": 1300, "publisher": "eWeek (reporting a Spiceworks survey)", "source_title": "Windows Server 2003 End of Life Poses Hurdles for Businesses (eWeek, Nathan Eddy, 23 March 2015)", "source_url": "https://www.eweek.com/de/small-business/windows-server-2003-end-of-life-poses-hurdles-for-businesses/", "source_type": "secondary", "source_access": "open", "published_at": "2015-03-23", "accessed_at": "2026-10-14", "quote": "That adds up to $100 billion in spending on migration-related spending on technology, including new hardware, software, cloud-based solutions, and associated services, Spiceworks said.", "locator": "Article body, third paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Spiceworks' scaling method is not published; treat as an order-of-magnitude estimate, not measured spend. Fetched 2026-10-14 with a browser user agent (raw/migration-effort-cost/eweek-2015-spiceworks-server-2003.html).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-migration-spending-100-billion-usd", "citation_text": "$100 billion of migration-related spending on hardware, software, cloud and services was Spiceworks' extrapolation of what leaving Windows Server 2003 would cost businesses, from its January 2015 survey of 1,300 IT professionals (Spiceworks via eWeek, 2015). Source: eWeek (reporting a Spiceworks survey), \"Windows Server 2003 End of Life Poses Hurdles for Businesses (eWeek, Nathan Eddy, 23 March 2015)\" (https://www.eweek.com/de/small-business/windows-server-2003-end-of-life-poses-hurdles-for-businesses/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2015-03-server-2003-migration-spending-100-billion-usd." }, { "id": "forrester-2014-06-tei-windows-server-2012-r2-upgrade-roi-270pct", "family": "migration-effort-cost", "statement": "270% three-year risk-adjusted ROI was Forrester's estimate for a composite 15,000-employee organisation upgrading to Windows Server 2012 R2 from 2008 or 2012, in a study Microsoft commissioned in 2014 from six customer interviews (Forrester for Microsoft, 2014).", "short_statement": null, "short_refs": null, "value": 270, "unit": "% three-year risk-adjusted ROI (composite organisation, Forrester TEI model)", "display_value": "270%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated (six interviewed customers)", "period": "2014-06", "population": "Composite organisation of 15,000 employees modelled by Forrester Consulting from six Microsoft customers that upgraded to Windows Server 2012 R2 from 2008 or 2012", "sample_n": 6, "publisher": "Microsoft (reporting a Forrester Consulting TEI study it commissioned)", "source_title": "Windows Server 2012 R2 delivers up to 270% ROI with a 6-month payback period (Microsoft blog archive, last updated 1 July 2014)", "source_url": "https://learn.microsoft.com/en-us/archive/blogs/testtesttestbug/windows-server-2012-r2-delivers-up-to-270-roi-with-a-6-month-payback-period", "source_type": "manufacturer", "source_access": "open", "published_at": "2014-07-01", "accessed_at": "2026-10-14", "quote": "Overall the study estimates a six month payback period and 3-year risk adjusted ROI of 270% for a composite organization of 15,000 employees", "locator": "Third paragraph", "derived": false, "formula": null, "headline": false, "series": "forrester-tei-windows-server-upgrade", "history": [], "notes": "Manufacturer-commissioned: 'Total Economic Impact of Windows Server 2012 R2 Upgrade, a commissioned study conducted by Forrester Consulting on behalf of Microsoft, June 2014'. Six customer interviews modelled as one composite organisation; not a survey. The Forrester PDF itself was not retrievable; Microsoft's archived blog post was fetched on 2026-10-14 (raw/migration-effort-cost/ms-blog-tei-ws2012r2.html). Microsoft's headline says 'up to 270% ROI'; the study gives a single composite estimate, not a range.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#forrester-2014-06-tei-windows-server-2012-r2-upgrade-roi-270pct", "citation_text": "270% three-year risk-adjusted ROI was Forrester's estimate for a composite 15,000-employee organisation upgrading to Windows Server 2012 R2 from 2008 or 2012, in a study Microsoft commissioned in 2014 from six customer interviews (Forrester for Microsoft, 2014). Source: Microsoft (reporting a Forrester Consulting TEI study it commissioned), \"Windows Server 2012 R2 delivers up to 270% ROI with a 6-month payback period (Microsoft blog archive, last updated 1 July 2014)\" (https://learn.microsoft.com/en-us/archive/blogs/testtesttestbug/windows-server-2012-r2-delivers-up-to-270-roi-with-a-6-month-payback-period). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#forrester-2014-06-tei-windows-server-2012-r2-upgrade-roi-270pct." }, { "id": "forrester-2014-06-tei-windows-server-2012-r2-upgrade-payback-6-months", "family": "migration-effort-cost", "statement": "6 months was the payback period Forrester estimated for a composite 15,000-employee organisation upgrading to Windows Server 2012 R2, in a Microsoft-commissioned 2014 study built from six customer interviews (Forrester for Microsoft, 2014).", "short_statement": null, "short_refs": null, "value": 6, "unit": "months to payback (composite organisation, Forrester TEI model)", "display_value": "6 months", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated (six interviewed customers)", "period": "2014-06", "population": "Composite organisation of 15,000 employees modelled by Forrester Consulting from six Microsoft customers that upgraded to Windows Server 2012 R2 from 2008 or 2012", "sample_n": 6, "publisher": "Microsoft (reporting a Forrester Consulting TEI study it commissioned)", "source_title": "Windows Server 2012 R2 delivers up to 270% ROI with a 6-month payback period (Microsoft blog archive, last updated 1 July 2014)", "source_url": "https://learn.microsoft.com/en-us/archive/blogs/testtesttestbug/windows-server-2012-r2-delivers-up-to-270-roi-with-a-6-month-payback-period", "source_type": "manufacturer", "source_access": "open", "published_at": "2014-07-01", "accessed_at": "2026-10-14", "quote": "Overall the study estimates a six month payback period and 3-year risk adjusted ROI of 270% for a composite organization of 15,000 employees", "locator": "Third paragraph", "derived": false, "formula": null, "headline": false, "series": "forrester-tei-windows-server-upgrade", "history": [], "notes": "Manufacturer-commissioned: 'Total Economic Impact of Windows Server 2012 R2 Upgrade, a commissioned study conducted by Forrester Consulting on behalf of Microsoft, June 2014'. Six customer interviews modelled as one composite organisation; not a survey. The Forrester PDF itself was not retrievable; Microsoft's archived blog post was fetched on 2026-10-14 (raw/migration-effort-cost/ms-blog-tei-ws2012r2.html). Benefits listed: server management, storage hardware and management savings, easier cloud integration.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#forrester-2014-06-tei-windows-server-2012-r2-upgrade-payback-6-months", "citation_text": "6 months was the payback period Forrester estimated for a composite 15,000-employee organisation upgrading to Windows Server 2012 R2, in a Microsoft-commissioned 2014 study built from six customer interviews (Forrester for Microsoft, 2014). Source: Microsoft (reporting a Forrester Consulting TEI study it commissioned), \"Windows Server 2012 R2 delivers up to 270% ROI with a 6-month payback period (Microsoft blog archive, last updated 1 July 2014)\" (https://learn.microsoft.com/en-us/archive/blogs/testtesttestbug/windows-server-2012-r2-delivers-up-to-270-roi-with-a-6-month-payback-period). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#forrester-2014-06-tei-windows-server-2012-r2-upgrade-payback-6-months." }, { "id": "forrester-2025-06-tei-azure-cost-efficiency-35pct-lower-cloud-spend-year-1", "family": "migration-effort-cost", "statement": "35% lower cloud spending in Year 1 was Forrester's modelled result for a composite enterprise with $12.5 million of annual Azure spend that used Microsoft's cost tools and pricing offers, including Azure Hybrid Benefit, in a June 2025 study commissioned by Microsoft (Forrester for Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 35, "unit": "% reduction in cloud spending, Year 1 (composite organisation, Forrester TEI model)", "display_value": "35%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Global (interviewees in North America and global firms)", "period": "2025-06", "population": "Composite global enterprise with $1 billion revenue and $12.5 million annual Azure spend, modelled by Forrester Consulting from eight interviewed decision-makers", "sample_n": 8, "publisher": "Forrester Consulting (commissioned by Microsoft)", "source_title": "The Total Economic Impact Of Microsoft Azure Solutions That Enhance Cost Efficiency (Forrester Consulting, commissioned by Microsoft, June 2025)", "source_url": "https://tei.forrester.com/go/Microsoft/AzureCostEfficiency/index.html", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-06-01", "accessed_at": "2026-10-14", "quote": "35% Reduction in cloud spending by leveraging Microsoft tools and Azure strategic pricing offers (Year 1)", "locator": "Executive Summary, key statistic tile", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Manufacturer-commissioned TEI (Microsoft paid; Forrester Consulting delivered). Month only (June 2025), so published_at uses the 1st. It measures cost optimisation of workloads already on Azure, not the cost of a server migration; Microsoft cites it on its Azure Hybrid Benefit page. Three-year NPV $8.7 million on $22,000 of costs. Fetched 2026-10-14 (raw/migration-effort-cost/tei-azure-cost-efficiency.html).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#forrester-2025-06-tei-azure-cost-efficiency-35pct-lower-cloud-spend-year-1", "citation_text": "35% lower cloud spending in Year 1 was Forrester's modelled result for a composite enterprise with $12.5 million of annual Azure spend that used Microsoft's cost tools and pricing offers, including Azure Hybrid Benefit, in a June 2025 study commissioned by Microsoft (Forrester for Microsoft, 2025). Source: Forrester Consulting (commissioned by Microsoft), \"The Total Economic Impact Of Microsoft Azure Solutions That Enhance Cost Efficiency (Forrester Consulting, commissioned by Microsoft, June 2025)\" (https://tei.forrester.com/go/Microsoft/AzureCostEfficiency/index.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#forrester-2025-06-tei-azure-cost-efficiency-35pct-lower-cloud-spend-year-1." }, { "id": "microsoft-2026-azure-hybrid-benefit-windows-server-up-to-80pct-with-reserved-instances", "family": "migration-effort-cost", "statement": "Up to 80% off the standard pay-as-you-go rate for Windows Server virtual machines is Microsoft's claim for combining Azure Hybrid Benefit with Azure Reserved VM Instances (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 80, "unit": "% saving versus Azure pay-as-you-go rate for Windows Server VMs (maximum, manufacturer claim)", "display_value": "Up to 80%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (varies by region)", "period": "2026", "population": "Azure Windows Server virtual machine pricing (manufacturer claim)", "sample_n": null, "publisher": "Microsoft", "source_title": "Azure Hybrid Benefit Pricing (Microsoft Azure)", "source_url": "https://azure.microsoft.com/en-us/pricing/offers/hybrid-benefit", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-03-01", "accessed_at": "2026-10-14", "quote": "You can combine Azure Hybrid Benefit with other strategic pricing offerings, such as Azure Reserved VM Instance, to save up to 80%* more than the standard pay-as-you-go rate for Windows Server.", "locator": "FAQ 01 and 05 ('What does Azure Hybrid Benefit offer for Windows Server on Azure Virtual Machines?')", "derived": false, "formula": null, "headline": false, "series": "hyperscaler-windows-server-savings-claims", "history": [], "notes": "Microsoft's marketing claim about its own offer, not measured savings. Page undated; footnote 2 cites prices 'as of March 2026'. Fetched 2026-10-14 (raw/migration-effort-cost/azure-hybrid-benefit.html). Azure Hybrid Benefit needs Windows Server core licences with active Software Assurance or a qualifying subscription. Asterisk: 'Actual savings may vary based on region, instance type, or usage.' The figure combines a licence you already pay for (Software Assurance) with a one- or three-year reservation. published_at set to 2026-03-01 from the footnote date.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-azure-hybrid-benefit-windows-server-up-to-80pct-with-reserved-instances", "citation_text": "Up to 80% off the standard pay-as-you-go rate for Windows Server virtual machines is Microsoft's claim for combining Azure Hybrid Benefit with Azure Reserved VM Instances (Microsoft, 2026). Source: Microsoft, \"Azure Hybrid Benefit Pricing (Microsoft Azure)\" (https://azure.microsoft.com/en-us/pricing/offers/hybrid-benefit). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-azure-hybrid-benefit-windows-server-up-to-80pct-with-reserved-instances." }, { "id": "microsoft-2026-azure-hybrid-benefit-windows-server-36pct-below-leading-cloud-provider", "family": "migration-effort-cost", "statement": "36% average saving against the leading cloud provider is Microsoft's claim for moving a Windows Server estate to Azure with Azure Hybrid Benefit, from its own comparison with equivalent AWS virtual machines at September 2024 prices (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 36, "unit": "% average saving versus AWS for Windows Server VMs with Azure Hybrid Benefit (manufacturer claim)", "display_value": "36%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Sample regions: US West (Oregon), Frankfurt, Paris", "period": "2024-09", "population": "Microsoft's comparison of sample Azure VM types (B2ms, D2s v3, D4s v3) against AWS equivalents, on-demand pricing including licence and Software Assurance", "sample_n": null, "publisher": "Microsoft", "source_title": "Azure Hybrid Benefit Pricing (Microsoft Azure)", "source_url": "https://azure.microsoft.com/en-us/pricing/offers/hybrid-benefit", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-03-01", "accessed_at": "2026-10-14", "quote": "Simplify the integration of AI advancements by migrating your Windows Server estate and save an average of 36% compared to the leading cloud provider.", "locator": "Carousel 'Migrate Windows Server to unlock innovations', footnote 3", "derived": false, "formula": null, "headline": false, "series": "hyperscaler-windows-server-savings-claims", "history": [], "notes": "Microsoft's marketing claim about its own offer, not measured savings. Page undated; footnote 2 cites prices 'as of March 2026'. Fetched 2026-10-14 (raw/migration-effort-cost/azure-hybrid-benefit.html). Azure Hybrid Benefit needs Windows Server core licences with active Software Assurance or a qualifying subscription. Footnote 3: 'Based on comparisons with AWS equivalent VM types and price plans, when applying the AHB to WS Server licenses ... Prices are as of Sept 2024'. A competitive claim by one hyperscaler against another; AWS publishes its own counter-claims.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-azure-hybrid-benefit-windows-server-36pct-below-leading-cloud-provider", "citation_text": "36% average saving against the leading cloud provider is Microsoft's claim for moving a Windows Server estate to Azure with Azure Hybrid Benefit, from its own comparison with equivalent AWS virtual machines at September 2024 prices (Microsoft, 2026). Source: Microsoft, \"Azure Hybrid Benefit Pricing (Microsoft Azure)\" (https://azure.microsoft.com/en-us/pricing/offers/hybrid-benefit). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-azure-hybrid-benefit-windows-server-36pct-below-leading-cloud-provider." }, { "id": "microsoft-2026-azure-hybrid-benefit-180-day-migration-allowance", "family": "migration-effort-cost", "statement": "180 days of migration allowance let Windows Server customers use the same licences on-premises and in Azure at once while they move servers, under Microsoft's Azure Hybrid Benefit terms (Microsoft, 2026).", "short_statement": "Azure Hybrid Benefit lets the same licences run on-premises and in Azure for **180 days** during a move.", "short_refs": null, "value": 180, "unit": "days of dual on-premises and Azure licence use during migration", "display_value": "180 days", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026", "population": "Azure Hybrid Benefit licence terms (manufacturer offer)", "sample_n": null, "publisher": "Microsoft", "source_title": "Azure Hybrid Benefit Pricing (Microsoft Azure)", "source_url": "https://azure.microsoft.com/en-us/pricing/offers/hybrid-benefit", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-03-01", "accessed_at": "2026-10-14", "quote": "You’ll also get 180 days of migration allowance to use your licenses on-premises and in Azure while migrating servers.", "locator": "FAQ 07 ('What does this benefit offer for Windows Server in Azure Dedicated Host?'), Windows Server Standard edition bullet", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Microsoft's marketing claim about its own offer, not measured savings. Page undated; footnote 2 cites prices 'as of March 2026'. Fetched 2026-10-14 (raw/migration-effort-cost/azure-hybrid-benefit.html). Azure Hybrid Benefit needs Windows Server core licences with active Software Assurance or a qualifying subscription. Stated under the Azure Dedicated Host FAQ for Standard edition licences; Microsoft's Product Terms carry the general 180-day rule.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-azure-hybrid-benefit-180-day-migration-allowance", "citation_text": "180 days of migration allowance let Windows Server customers use the same licences on-premises and in Azure at once while they move servers, under Microsoft's Azure Hybrid Benefit terms (Microsoft, 2026). Source: Microsoft, \"Azure Hybrid Benefit Pricing (Microsoft Azure)\" (https://azure.microsoft.com/en-us/pricing/offers/hybrid-benefit). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2026-azure-hybrid-benefit-180-day-migration-allowance." }, { "id": "aws-2019-12-01-end-of-support-migration-program-windows-server-launched", "family": "migration-effort-cost", "statement": "AWS launched its End-of-Support Migration Program for Windows Server on 1 December 2019, six weeks before Windows Server 2008's end of support, to repackage applications from Windows Server 2003, 2008 and 2008 R2 for newer versions without code changes (AWS, 2019).", "short_statement": null, "short_refs": null, "value": null, "unit": "launch date of AWS End-of-Support Migration Program (EMP) for Windows Server", "display_value": "1 December 2019", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2019-12-01", "population": "AWS programme announcement (manufacturer)", "sample_n": null, "publisher": "Amazon Web Services", "source_title": "AWS launches new program to drive migrations for end of support Windows Server applications (AWS What's New, 1 December 2019)", "source_url": "https://aws.amazon.com/about-aws/whats-new/2019/12/aws-launches-program-drive-migration-windows-server/", "source_type": "manufacturer", "source_access": "open", "published_at": "2019-12-01", "accessed_at": "2026-10-14", "quote": "EMP for Windows Server includes technology and expert guidance to migrate your legacy applications from Windows Server 2003, 2008, and 2008 R2 to newer, supported versions on AWS, without any refactoring.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Manufacturer announcement. The companion AWS News Blog post (2 December 2019, aws.amazon.com/blogs/aws/new-program-to-future-proof-windows-server-applications/) says a partner or AWS Professional Services had to run the migration and calls extended support 'simply delaying the inevitable'. Saved as raw/migration-effort-cost/aws-whatsnew-emp-2019.html and aws-blog-emp-2019.html (fetched 2026-10-14). Windows Server 2008 and 2008 R2 left extended support on 14 January 2020.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-2019-12-01-end-of-support-migration-program-windows-server-launched", "citation_text": "AWS launched its End-of-Support Migration Program for Windows Server on 1 December 2019, six weeks before Windows Server 2008's end of support, to repackage applications from Windows Server 2003, 2008 and 2008 R2 for newer versions without code changes (AWS, 2019). Source: Amazon Web Services, \"AWS launches new program to drive migrations for end of support Windows Server applications (AWS What's New, 1 December 2019)\" (https://aws.amazon.com/about-aws/whats-new/2019/12/aws-launches-program-drive-migration-windows-server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-2019-12-01-end-of-support-migration-program-windows-server-launched." }, { "id": "aws-2025-03-emp-tool-support-ended-2025-04-30", "family": "migration-effort-cost", "statement": "AWS ended support for its End-of-Support Migration Program (EMP) tool for Windows Server on 30 April 2025, five years and five months after its December 2019 launch, and the programme page now redirects to the AWS home page (AWS, 2025).", "short_statement": "AWS ended support for its Windows Server end-of-support migration tool on **30 April 2025**.", "short_refs": null, "value": null, "unit": "end-of-support date of the AWS EMP tool", "display_value": "30 April 2025", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-04-30", "population": "AWS programme notice (manufacturer)", "sample_n": null, "publisher": "Amazon Web Services", "source_title": "End-of-Support Migration Program for Windows Server (AWS, Wayback Machine snapshot of 20 March 2025)", "source_url": "https://aws.amazon.com/emp-windows-server/", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-03-20", "accessed_at": "2026-10-14", "quote": "Customers currently using the EMP Tool will be able to continue using the tool until April 30, 2025, when we will end support for the EMP Tool.", "locator": "Wayback snapshot https://web.archive.org/web/20250320024355/https://aws.amazon.com/emp-windows-server/; 'End of support notice' banner", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Page undated; published_at is the snapshot date. By March 2025 the page listed Windows Server 2003, 2008 and 2012 as sources and described the tool as free for self-service use, with paid partner or AWS engagements optional. A fetch of the live URL on 2026-10-14 returned the AWS home page (raw/migration-effort-cost/aws-emp.html). Snapshot saved as wayback-aws-emp-20250320.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-2025-03-emp-tool-support-ended-2025-04-30", "citation_text": "AWS ended support for its End-of-Support Migration Program (EMP) tool for Windows Server on 30 April 2025, five years and five months after its December 2019 launch, and the programme page now redirects to the AWS home page (AWS, 2025). Source: Amazon Web Services, \"End-of-Support Migration Program for Windows Server (AWS, Wayback Machine snapshot of 20 March 2025)\" (https://aws.amazon.com/emp-windows-server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-2025-03-emp-tool-support-ended-2025-04-30." }, { "id": "google-cloud-2023-10-18-windows-server-2012-runs-after-eos-on-9-machine-families", "family": "migration-effort-cost", "statement": "9 Compute Engine machine families (E2, N1, N2, N2D, T2D, C2, C2D, M1 and M2) would keep running Windows Server 2012 after its October 2023 end of support, Google Cloud said, offering ESU support and commercial help to win those workloads (Google Cloud, 2023).", "short_statement": null, "short_refs": null, "value": 9, "unit": "Compute Engine machine families supporting Windows Server 2012 after end of support", "display_value": "9 machine families", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-10-18", "population": "Google Cloud product statement (manufacturer)", "sample_n": null, "publisher": "Google Cloud", "source_title": "Windows Server 2012 is welcome on Google Cloud, even after End of Support (Google Cloud Blog, Venkat Gattamneni and Clark Kibler, 18 October 2023)", "source_url": "https://cloud.google.com/blog/products/compute/windows-server-2012-on-google-cloud-after-eos", "source_type": "manufacturer", "source_access": "open", "published_at": "2023-10-18", "accessed_at": "2026-10-14", "quote": "you can rest assured that Windows 2012 will continue to work beyond the EOS date on all machine types where its supported today (E2, N1, N2, N2D, T2D, C2, C2D, M1, and M2).", "locator": "Section 'Upgrade to Windows Server 2016 or later', second paragraph", "derived": true, "formula": "Count of the machine families listed in the quoted sentence = 9.", "headline": false, "series": "", "history": [], "notes": "Manufacturer statement. The post closes: 'if commercial incentives for ESUs are tempting you to choose a different cloud provider, don't count us out', a reference to Microsoft's free ESU on Azure; Google offered no free ESU itself (customers buy ESU from Microsoft). Fetched 2026-10-14 (raw/migration-effort-cost/gcp-blog-ws2012-after-eos.html).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#google-cloud-2023-10-18-windows-server-2012-runs-after-eos-on-9-machine-families", "citation_text": "9 Compute Engine machine families (E2, N1, N2, N2D, T2D, C2, C2D, M1 and M2) would keep running Windows Server 2012 after its October 2023 end of support, Google Cloud said, offering ESU support and commercial help to win those workloads (Google Cloud, 2023). Source: Google Cloud, \"Windows Server 2012 is welcome on Google Cloud, even after End of Support (Google Cloud Blog, Venkat Gattamneni and Clark Kibler, 18 October 2023)\" (https://cloud.google.com/blog/products/compute/windows-server-2012-on-google-cloud-after-eos). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#google-cloud-2023-10-18-windows-server-2012-runs-after-eos-on-9-machine-families." }, { "id": "idc-2025-04-dell-intel-survey-44pct-refresh-servers-every-3-years-or-less", "family": "migration-effort-cost", "statement": "44% of organisations refresh their on-premises servers every three years or less, in IDC's March 2025 server refresh survey of 199 organisations sponsored by Dell Technologies and Intel (IDC for Dell and Intel, 2025).", "short_statement": null, "short_refs": null, "value": 44, "unit": "% of surveyed organisations refreshing on-premises servers every three years or less", "display_value": "44%", "display_label": "IDC survey of 199 organisations for Dell and Intel, March 2025", "display_hook": null, "row_label": "IDC for Dell and Intel, 2025: refreshing every three years or less", "publisher_short": null, "geography": "United States", "period": "2025-03", "population": "IT decision-makers at US organisations with at least 1,000 employees, IDC's Intel-Dell Server Refresh and Upgrade Survey, March 2025 (n = 199 for this question in the white paper; 200 respondents in the May 2025 InfoBrief)", "sample_n": 199, "publisher": "IDC (sponsored by Dell Technologies and Intel)", "source_title": "Would You Innovate on Your Outdated Server Infrastructure? Get Ahead of Your Technical Debt (IDC white paper #US53311825, Chris Drake, April 2025, sponsored by Dell Technologies and Intel)", "source_url": "https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/idc-server-refresh-white-paper.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-04-01", "accessed_at": "2026-10-14", "quote": "Forty-four percent of organizations refresh their server/compute infrastructure every three years or less, according to IDC research", "locator": "Page 4, Situation Overview; Figure 1 and its supplemental data (page 20)", "derived": false, "formula": null, "headline": false, "series": "server-refresh-cycle-surveys", "history": [], "notes": "Vendor-sponsored: IDC Custom Solutions white paper sponsored by Dell Technologies and Intel, which sell servers and processors. PDF fetched 2026-10-14 (raw/migration-effort-cost/idc-dell-server-refresh-2025.pdf, 3,649,477 bytes; the URL redirects to delltechnologies.com/assetlink/doc/en-us/idc-server-refresh-white-paper-en-dl1ko52-original.pdf). The white paper does not state the survey geography; IDC's companion InfoBrief (May 2025, #US53314225, same survey) says 200 respondents from the United States at organisations with at least 1,000 employees (raw/migration-effort-cost/idc-dell-server-refresh-infobrief-2025.pdf). Figure 1 supplemental data: under 2 years 14%, 2 to 3 years 30%, 3 to 4 years 27%, 4 to 5 years 24%, 5 years 4%, more than 5 years 1.0%, don't know 0.5%. April 2025 has no day, so published_at uses the 1st. The InfoBrief's version of the same chart (n = 200) gives under 2 years 15%, 2 to 3 years 30%, 3 to 4 years 27%, 4 to 5 years 24%, 5 years 5%, more than 5 years 1%, don't know 1%, so the white paper and InfoBrief differ by one point in two buckets.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2025-04-dell-intel-survey-44pct-refresh-servers-every-3-years-or-less", "citation_text": "44% of organisations refresh their on-premises servers every three years or less, in IDC's March 2025 server refresh survey of 199 organisations sponsored by Dell Technologies and Intel (IDC for Dell and Intel, 2025). Source: IDC (sponsored by Dell Technologies and Intel), \"Would You Innovate on Your Outdated Server Infrastructure? Get Ahead of Your Technical Debt (IDC white paper #US53311825, Chris Drake, April 2025, sponsored by Dell Technologies and Intel)\" (https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/idc-server-refresh-white-paper.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2025-04-dell-intel-survey-44pct-refresh-servers-every-3-years-or-less." }, { "id": "idc-2025-04-dell-intel-survey-half-wait-3-to-5-years-to-refresh", "family": "migration-effort-cost", "statement": "Half of organisations still wait three to five years to refresh and upgrade their server platforms, IDC concluded from its March 2025 survey of 199 organisations sponsored by Dell Technologies and Intel (IDC for Dell and Intel, 2025).", "short_statement": null, "short_refs": null, "value": 50, "unit": "% of surveyed organisations refreshing servers every three to five years", "display_value": "Half", "display_label": "", "display_hook": null, "row_label": "IDC for Dell and Intel, 2025: waiting three to five years", "publisher_short": null, "geography": "United States", "period": "2025-03", "population": "IT decision-makers at US organisations with at least 1,000 employees, IDC's Intel-Dell Server Refresh and Upgrade Survey, March 2025 (n = 199 for this question in the white paper; 200 respondents in the May 2025 InfoBrief)", "sample_n": 199, "publisher": "IDC (sponsored by Dell Technologies and Intel)", "source_title": "Would You Innovate on Your Outdated Server Infrastructure? Get Ahead of Your Technical Debt (IDC white paper #US53311825, Chris Drake, April 2025, sponsored by Dell Technologies and Intel)", "source_url": "https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/idc-server-refresh-white-paper.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-04-01", "accessed_at": "2026-10-14", "quote": "Although half of organizations continue to wait three to five years to refresh and upgrade their server platforms", "locator": "Page 18, Conclusion, first paragraph", "derived": false, "formula": null, "headline": false, "series": "server-refresh-cycle-surveys", "history": [], "notes": "Vendor-sponsored: IDC Custom Solutions white paper sponsored by Dell Technologies and Intel, which sell servers and processors. PDF fetched 2026-10-14 (raw/migration-effort-cost/idc-dell-server-refresh-2025.pdf, 3,649,477 bytes; the URL redirects to delltechnologies.com/assetlink/doc/en-us/idc-server-refresh-white-paper-en-dl1ko52-original.pdf). The white paper does not state the survey geography; IDC's companion InfoBrief (May 2025, #US53314225, same survey) says 200 respondents from the United States at organisations with at least 1,000 employees (raw/migration-effort-cost/idc-dell-server-refresh-infobrief-2025.pdf). IDC's 'half' matches the 3-to-4-year (27%) and 4-to-5-year (24%) buckets of Figure 1 combined (51%).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2025-04-dell-intel-survey-half-wait-3-to-5-years-to-refresh", "citation_text": "Half of organisations still wait three to five years to refresh and upgrade their server platforms, IDC concluded from its March 2025 survey of 199 organisations sponsored by Dell Technologies and Intel (IDC for Dell and Intel, 2025). Source: IDC (sponsored by Dell Technologies and Intel), \"Would You Innovate on Your Outdated Server Infrastructure? Get Ahead of Your Technical Debt (IDC white paper #US53311825, Chris Drake, April 2025, sponsored by Dell Technologies and Intel)\" (https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/idc-server-refresh-white-paper.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2025-04-dell-intel-survey-half-wait-3-to-5-years-to-refresh." }, { "id": "idc-2025-04-dell-intel-survey-over-40pct-refresh-more-often-since-covid", "family": "migration-effort-cost", "statement": "Over 40% of organisations say they have refreshed or upgraded their server equipment more frequently since the COVID-19 pandemic, in IDC's March 2025 survey sponsored by Dell Technologies and Intel (IDC for Dell and Intel, 2025).", "short_statement": null, "short_refs": null, "value": 40, "unit": "% of surveyed organisations refreshing servers more often since COVID-19 (lower bound)", "display_value": "Over 40%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United States", "period": "2025-03", "population": "IT decision-makers at US organisations with at least 1,000 employees, IDC's Intel-Dell Server Refresh and Upgrade Survey, March 2025 (n = 199 for this question in the white paper; 200 respondents in the May 2025 InfoBrief)", "sample_n": null, "publisher": "IDC (sponsored by Dell Technologies and Intel)", "source_title": "Would You Innovate on Your Outdated Server Infrastructure? Get Ahead of Your Technical Debt (IDC white paper #US53311825, Chris Drake, April 2025, sponsored by Dell Technologies and Intel)", "source_url": "https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/idc-server-refresh-white-paper.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-04-01", "accessed_at": "2026-10-14", "quote": "over 40% of organizations say they refresh or upgrade their server equipment more frequently since the COVID-19 pandemic", "locator": "Page 4, Situation Overview, first paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor-sponsored: IDC Custom Solutions white paper sponsored by Dell Technologies and Intel, which sell servers and processors. PDF fetched 2026-10-14 (raw/migration-effort-cost/idc-dell-server-refresh-2025.pdf, 3,649,477 bytes; the URL redirects to delltechnologies.com/assetlink/doc/en-us/idc-server-refresh-white-paper-en-dl1ko52-original.pdf). The white paper does not state the survey geography; IDC's companion InfoBrief (May 2025, #US53314225, same survey) says 200 respondents from the United States at organisations with at least 1,000 employees (raw/migration-effort-cost/idc-dell-server-refresh-infobrief-2025.pdf). Sample size for this question is not given. Contrast with Uptime Institute's and Omdia's findings of lengthening server lives (2022) and the hyperscalers' longer depreciation schedules.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2025-04-dell-intel-survey-over-40pct-refresh-more-often-since-covid", "citation_text": "Over 40% of organisations say they have refreshed or upgraded their server equipment more frequently since the COVID-19 pandemic, in IDC's March 2025 survey sponsored by Dell Technologies and Intel (IDC for Dell and Intel, 2025). Source: IDC (sponsored by Dell Technologies and Intel), \"Would You Innovate on Your Outdated Server Infrastructure? Get Ahead of Your Technical Debt (IDC white paper #US53311825, Chris Drake, April 2025, sponsored by Dell Technologies and Intel)\" (https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/idc-server-refresh-white-paper.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2025-04-dell-intel-survey-over-40pct-refresh-more-often-since-covid." }, { "id": "idc-2025-04-dell-intel-survey-35pct-refresh-to-avoid-eol-support-contracts", "family": "migration-effort-cost", "statement": "35% of organisations refresh on-premises servers to avoid costly support contracts for end-of-life equipment, behind security (48%) and performance (47%), in IDC's March 2025 survey of 199 organisations sponsored by Dell Technologies and Intel (IDC for Dell and Intel, 2025).", "short_statement": null, "short_refs": null, "value": 35, "unit": "% of surveyed organisations citing avoidance of costly end-of-life support contracts as a refresh reason", "display_value": "35%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United States", "period": "2025-03", "population": "IT decision-makers at US organisations with at least 1,000 employees, IDC's Intel-Dell Server Refresh and Upgrade Survey, March 2025 (n = 199 for this question in the white paper; 200 respondents in the May 2025 InfoBrief)", "sample_n": 199, "publisher": "IDC (sponsored by Dell Technologies and Intel)", "source_title": "Would You Innovate on Your Outdated Server Infrastructure? Get Ahead of Your Technical Debt (IDC white paper #US53311825, Chris Drake, April 2025, sponsored by Dell Technologies and Intel)", "source_url": "https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/idc-server-refresh-white-paper.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-04-01", "accessed_at": "2026-10-14", "quote": "To avoid costly support contracts for end-of-life equipment", "locator": "Page 7, Figure 2 'The Most Common Reasons for Refreshing/Upgrading On-Premises Server Platforms', sixth bar (35%)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor-sponsored: IDC Custom Solutions white paper sponsored by Dell Technologies and Intel, which sell servers and processors. PDF fetched 2026-10-14 (raw/migration-effort-cost/idc-dell-server-refresh-2025.pdf, 3,649,477 bytes; the URL redirects to delltechnologies.com/assetlink/doc/en-us/idc-server-refresh-white-paper-en-dl1ko52-original.pdf). The white paper does not state the survey geography; IDC's companion InfoBrief (May 2025, #US53314225, same survey) says 200 respondents from the United States at organisations with at least 1,000 employees (raw/migration-effort-cost/idc-dell-server-refresh-infobrief-2025.pdf). Figure 2 in order: enhanced security 48%, improve performance 47%, scalability 47%, avoid more costly maintenance 36%, avoid more expensive support 36%, avoid costly support contracts for end-of-life equipment 35% (labels and values extracted in the same order from the PDF). The InfoBrief appendix table confirms 35% for on-premises servers (31% for converged and hyperconverged systems).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2025-04-dell-intel-survey-35pct-refresh-to-avoid-eol-support-contracts", "citation_text": "35% of organisations refresh on-premises servers to avoid costly support contracts for end-of-life equipment, behind security (48%) and performance (47%), in IDC's March 2025 survey of 199 organisations sponsored by Dell Technologies and Intel (IDC for Dell and Intel, 2025). Source: IDC (sponsored by Dell Technologies and Intel), \"Would You Innovate on Your Outdated Server Infrastructure? Get Ahead of Your Technical Debt (IDC white paper #US53311825, Chris Drake, April 2025, sponsored by Dell Technologies and Intel)\" (https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/idc-server-refresh-white-paper.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2025-04-dell-intel-survey-35pct-refresh-to-avoid-eol-support-contracts." }, { "id": "idc-2018-11-mean-server-life-cycle-5-15-years", "family": "migration-effort-cost", "statement": "5.15 years was the mean life cycle of servers in operation in IDC's 2017 Server and Storage Workloads Survey, as reported in IDC's November 2018 Perspective on server upgrade cycles (IDC, 2018).", "short_statement": null, "short_refs": null, "value": 5.15, "unit": "years, mean server life cycle in operation", "display_value": "5.15 years", "display_label": "IDC Server and Storage Workloads Survey, 2017", "display_hook": null, "row_label": "IDC, 2017: mean server life cycle", "publisher_short": null, "geography": "Worldwide (IDC survey)", "period": "2017-05", "population": "Respondents to IDC's Server and Storage Workloads Survey: Understanding 3rd Platform Usage (May 2017), estimating how long servers bought in 2016 would stay in operation", "sample_n": null, "publisher": "IDC", "source_title": "Server Upgrade Cycles: Why Faster Is Better (IDC Perspective #US44236318, Stephen Belanger and Ashish Nadkarni, November 2018)", "source_url": "https://www.ibm.com/downloads/cas/AV1ZWNZM", "source_type": "secondary", "source_access": "open", "published_at": "2018-11-01", "accessed_at": "2026-10-14", "quote": "IDC's 2017 Server and Storage Workloads Survey: Understanding 3rd Platform Usage found that the mean life cycle for servers in operation was 5.15 years", "locator": "Page 2, 'Server Life Cycle Overview', first paragraph; Figure 2 note", "derived": false, "formula": null, "headline": false, "series": "server-life-cycle-years", "history": [], "notes": "IDC Perspective hosted by IBM; the URL redirects to ibm.com/downloads/documents/us-en/107a02e95dc8f86b. PDF fetched 2026-10-14 (raw/migration-effort-cost/idc-ibm-AV1ZWNZM.bin, 989,088 bytes). The survey behind the life-cycle figures is IDC's Server and Storage Workloads Survey, May 2017; its sample size is not given in the Perspective. IDC says the result was 'fairly consistent' with the two prior years' surveys. November 2018 has no day, so published_at uses the 1st.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2018-11-mean-server-life-cycle-5-15-years", "citation_text": "5.15 years was the mean life cycle of servers in operation in IDC's 2017 Server and Storage Workloads Survey, as reported in IDC's November 2018 Perspective on server upgrade cycles (IDC, 2018). Source: IDC, \"Server Upgrade Cycles: Why Faster Is Better (IDC Perspective #US44236318, Stephen Belanger and Ashish Nadkarni, November 2018)\" (https://www.ibm.com/downloads/cas/AV1ZWNZM). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2018-11-mean-server-life-cycle-5-15-years." }, { "id": "idc-2018-11-servers-on-five-year-cycle-fell-from-48-7pct-2010-to-32-9pct-2016", "family": "migration-effort-cost", "statement": "32.9% of servers were expected to have a five-year life cycle in 2016, down from 48.7% of servers upgraded after five years in 2010, in IDC's server workloads surveys (IDC, 2018).", "short_statement": null, "short_refs": null, "value": 32.9, "unit": "% of servers expected to have a five-year life cycle (2016)", "display_value": "32.9% (from 48.7%)", "display_label": "", "display_hook": null, "row_label": "IDC: servers on a five-year cycle, 2016", "publisher_short": null, "geography": "Worldwide (IDC survey)", "period": "2016", "population": "Respondents to IDC's Server and Storage Workloads Survey, 2010 to 2016 editions", "sample_n": null, "publisher": "IDC", "source_title": "Server Upgrade Cycles: Why Faster Is Better (IDC Perspective #US44236318, Stephen Belanger and Ashish Nadkarni, November 2018)", "source_url": "https://www.ibm.com/downloads/cas/AV1ZWNZM", "source_type": "secondary", "source_access": "open", "published_at": "2018-11-01", "accessed_at": "2026-10-14", "quote": "the percentage of servers upgraded after a five-year life cycle was much larger in 2010 at 48.7%. By 2016, the number of servers expected to have a five-year life cycle declined to 32.9% of total servers.", "locator": "Page 2, 'Server Life Cycle Overview', third paragraph; Figure 3", "derived": false, "formula": null, "headline": false, "series": "", "history": [ { "period": "2010", "value": 48.7 } ], "notes": "IDC Perspective hosted by IBM; the URL redirects to ibm.com/downloads/documents/us-en/107a02e95dc8f86b. PDF fetched 2026-10-14 (raw/migration-effort-cost/idc-ibm-AV1ZWNZM.bin, 989,088 bytes). The survey behind the life-cycle figures is IDC's Server and Storage Workloads Survey, May 2017; its sample size is not given in the Perspective. The 2010 figure describes servers upgraded after five years; the 2016 figure describes expectations, so the two are not strictly the same measure. IDC read the shift toward four-year cycles as life cycles shortening.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2018-11-servers-on-five-year-cycle-fell-from-48-7pct-2010-to-32-9pct-2016", "citation_text": "32.9% of servers were expected to have a five-year life cycle in 2016, down from 48.7% of servers upgraded after five years in 2010, in IDC's server workloads surveys (IDC, 2018). Source: IDC, \"Server Upgrade Cycles: Why Faster Is Better (IDC Perspective #US44236318, Stephen Belanger and Ashish Nadkarni, November 2018)\" (https://www.ibm.com/downloads/cas/AV1ZWNZM). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2018-11-servers-on-five-year-cycle-fell-from-48-7pct-2010-to-32-9pct-2016." }, { "id": "idc-2018-11-60-2pct-of-servers-kept-five-or-six-years", "family": "migration-effort-cost", "statement": "60.2% of servers were expected to stay in operation for five or six years, 26.1% for four years and 13.7% for three years or less, in IDC's 2017 Server and Storage Workloads Survey (IDC, 2018).", "short_statement": null, "short_refs": null, "value": 60.2, "unit": "% of servers expected to be kept in operation five or six years", "display_value": "60.2%", "display_label": "", "display_hook": null, "row_label": "IDC, 2017: servers kept five or six years", "publisher_short": null, "geography": "Worldwide (IDC survey)", "period": "2017-05", "population": "Respondents to IDC's Server and Storage Workloads Survey (May 2017), estimating the life of servers purchased in 2016", "sample_n": null, "publisher": "IDC", "source_title": "Server Upgrade Cycles: Why Faster Is Better (IDC Perspective #US44236318, Stephen Belanger and Ashish Nadkarni, November 2018)", "source_url": "https://www.ibm.com/downloads/cas/AV1ZWNZM", "source_type": "secondary", "source_access": "open", "published_at": "2018-11-01", "accessed_at": "2026-10-14", "quote": "respondents estimated that 60.2% of servers would be kept in operation either 5 or 6 years", "locator": "Page 2, 'Server Life Cycle Overview', second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "IDC Perspective hosted by IBM; the URL redirects to ibm.com/downloads/documents/us-en/107a02e95dc8f86b. PDF fetched 2026-10-14 (raw/migration-effort-cost/idc-ibm-AV1ZWNZM.bin, 989,088 bytes). The survey behind the life-cycle figures is IDC's Server and Storage Workloads Survey, May 2017; its sample size is not given in the Perspective.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2018-11-60-2pct-of-servers-kept-five-or-six-years", "citation_text": "60.2% of servers were expected to stay in operation for five or six years, 26.1% for four years and 13.7% for three years or less, in IDC's 2017 Server and Storage Workloads Survey (IDC, 2018). Source: IDC, \"Server Upgrade Cycles: Why Faster Is Better (IDC Perspective #US44236318, Stephen Belanger and Ashish Nadkarni, November 2018)\" (https://www.ibm.com/downloads/cas/AV1ZWNZM). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2018-11-60-2pct-of-servers-kept-five-or-six-years." }, { "id": "idc-dell-2018-07-server-refresh-adds-over-100000-usd-business-per-server", "family": "migration-effort-cost", "statement": "More than $100,000 per server of additional business was the average value of performance and agility gains from server refreshes in IDC's July 2018 Business Value study with Dell, as cited in IDC's November 2018 Perspective (IDC for Dell, 2018).", "short_statement": null, "short_refs": null, "value": 100000, "unit": "USD additional business per refreshed server (average, lower bound)", "display_value": "$100,000+", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated (IDC Business Value survey)", "period": "2018-07", "population": "Organisations surveyed for IDC's Business Value study with Dell, 'Accelerate Business Agility with Faster Server Refresh Cycles' (IDC #US42505917, July 2018)", "sample_n": null, "publisher": "IDC (Business Value study with Dell, cited in an IDC Perspective)", "source_title": "Server Upgrade Cycles: Why Faster Is Better (IDC Perspective #US44236318, Stephen Belanger and Ashish Nadkarni, November 2018)", "source_url": "https://www.ibm.com/downloads/cas/AV1ZWNZM", "source_type": "manufacturer", "source_access": "open", "published_at": "2018-11-01", "accessed_at": "2026-10-14", "quote": "performance and agility improvements stemming from server refreshes translated to additional business worth an average of more than $100,000 per server", "locator": "Page 5, first full paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "IDC Perspective hosted by IBM; the URL redirects to ibm.com/downloads/documents/us-en/107a02e95dc8f86b. PDF fetched 2026-10-14 (raw/migration-effort-cost/idc-ibm-AV1ZWNZM.bin, 989,088 bytes). The survey behind the life-cycle figures is IDC's Server and Storage Workloads Survey, May 2017; its sample size is not given in the Perspective. Labelled manufacturer because the underlying Business Value study was done 'with Dell', a server vendor; its sample size is not given here. The same Perspective says costs of operation were 'more than halved' over three years after an upgrade (no base given).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-dell-2018-07-server-refresh-adds-over-100000-usd-business-per-server", "citation_text": "More than $100,000 per server of additional business was the average value of performance and agility gains from server refreshes in IDC's July 2018 Business Value study with Dell, as cited in IDC's November 2018 Perspective (IDC for Dell, 2018). Source: IDC (Business Value study with Dell, cited in an IDC Perspective), \"Server Upgrade Cycles: Why Faster Is Better (IDC Perspective #US44236318, Stephen Belanger and Ashish Nadkarni, November 2018)\" (https://www.ibm.com/downloads/cas/AV1ZWNZM). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-dell-2018-07-server-refresh-adds-over-100000-usd-business-per-server." }, { "id": "uptime-2026-08-one-in-three-operators-refresh-servers-every-3-years-or-less", "family": "migration-effort-cost", "statement": "33% of data center owner/operators typically refresh their servers every three years or less, in Uptime Institute's 2026 Global Data Center Survey of 659 operators (Uptime Institute, 2026).", "short_statement": "**33%** of data-centre operators refreshed their servers every three years or less in 2026.", "short_refs": null, "value": 33, "unit": "% of data center owner/operators refreshing servers every three years or less", "display_value": "1 in 3", "display_label": "", "display_hook": null, "row_label": "Uptime Institute, 2026: refreshing every three years or less", "publisher_short": null, "geography": "Worldwide", "period": "2026-05", "population": "Data center owner/operator respondents to Uptime Institute's 2026 Global Data Center Survey, fielded 17 March to 1 May 2026 (n = 659 for this question; 801 owner/operators of 1,635 respondents)", "sample_n": 659, "publisher": "Uptime Institute", "source_title": "Data Center Capacity Growth Trends: Findings from the 2026 Global Data Center Survey (Uptime Institute, August 2026)", "source_url": "https://datacenter.uptimeinstitute.com/rs/711-RIA-145/images/2026%20Annual%20Survey%20Data%20Center%20Growth%20v6.pdf?version=0", "source_type": "secondary", "source_access": "open", "published_at": "2026-08-01", "accessed_at": "2026-10-14", "quote": "One in three respondents report their organization typically refreshes their servers every three years or less.", "locator": "Page 1, Summary, fourth paragraph; chart IV 'Server refresh timelines'", "derived": false, "formula": null, "headline": false, "series": "server-refresh-cycle-surveys", "history": [], "notes": "Industry research body survey (Uptime Institute), not vendor-sponsored. PDF fetched 2026-10-14 (raw/migration-effort-cost/uptime-2026-annual-survey.pdf). Respondents: 24% US and Canada, 28% Europe, 9% China, 13% Asia-Pacific excluding China, 14% Latin America. The chart's 4-year and 5-year shares (34% and 15%) cannot be assigned to buckets from the extracted text, so only the two shares stated in the summary are recorded.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2026-08-one-in-three-operators-refresh-servers-every-3-years-or-less", "citation_text": "33% of data center owner/operators typically refresh their servers every three years or less, in Uptime Institute's 2026 Global Data Center Survey of 659 operators (Uptime Institute, 2026). Source: Uptime Institute, \"Data Center Capacity Growth Trends: Findings from the 2026 Global Data Center Survey (Uptime Institute, August 2026)\" (https://datacenter.uptimeinstitute.com/rs/711-RIA-145/images/2026%20Annual%20Survey%20Data%20Center%20Growth%20v6.pdf?version=0). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2026-08-one-in-three-operators-refresh-servers-every-3-years-or-less." }, { "id": "uptime-2026-08-18pct-of-operators-refresh-servers-every-6-years-or-more", "family": "migration-effort-cost", "statement": "18% of data center owner/operators refresh their servers only every six years or more, in Uptime Institute's 2026 Global Data Center Survey of 659 operators (Uptime Institute, 2026).", "short_statement": null, "short_refs": null, "value": 18, "unit": "% of data center owner/operators refreshing servers every six years or more", "display_value": "18%", "display_label": "Uptime Institute 2026 Global Data Center Survey, 659 operators", "display_hook": null, "row_label": "Uptime Institute, 2026: refreshing every six years or more", "publisher_short": null, "geography": "Worldwide", "period": "2026-05", "population": "Data center owner/operator respondents to Uptime Institute's 2026 Global Data Center Survey, fielded 17 March to 1 May 2026 (n = 659 for this question; 801 owner/operators of 1,635 respondents)", "sample_n": 659, "publisher": "Uptime Institute", "source_title": "Data Center Capacity Growth Trends: Findings from the 2026 Global Data Center Survey (Uptime Institute, August 2026)", "source_url": "https://datacenter.uptimeinstitute.com/rs/711-RIA-145/images/2026%20Annual%20Survey%20Data%20Center%20Growth%20v6.pdf?version=0", "source_type": "secondary", "source_access": "open", "published_at": "2026-08-01", "accessed_at": "2026-10-14", "quote": "However, 18% say they refresh their servers every six years or more.", "locator": "Page 1, Summary, fourth paragraph; chart IV 'Server refresh timelines'", "derived": false, "formula": null, "headline": false, "series": "server-refresh-cycle-surveys", "history": [], "notes": "Industry research body survey (Uptime Institute), not vendor-sponsored. PDF fetched 2026-10-14 (raw/migration-effort-cost/uptime-2026-annual-survey.pdf). Respondents: 24% US and Canada, 28% Europe, 9% China, 13% Asia-Pacific excluding China, 14% Latin America. The chart's 4-year and 5-year shares (34% and 15%) cannot be assigned to buckets from the extracted text, so only the two shares stated in the summary are recorded.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2026-08-18pct-of-operators-refresh-servers-every-6-years-or-more", "citation_text": "18% of data center owner/operators refresh their servers only every six years or more, in Uptime Institute's 2026 Global Data Center Survey of 659 operators (Uptime Institute, 2026). Source: Uptime Institute, \"Data Center Capacity Growth Trends: Findings from the 2026 Global Data Center Survey (Uptime Institute, August 2026)\" (https://datacenter.uptimeinstitute.com/rs/711-RIA-145/images/2026%20Annual%20Survey%20Data%20Center%20Growth%20v6.pdf?version=0). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2026-08-18pct-of-operators-refresh-servers-every-6-years-or-more." }, { "id": "uptime-2022-09-52pct-keep-servers-five-years-or-longer-up-from-34pct-2015", "family": "migration-effort-cost", "statement": "52% of data center operators kept their servers in operation for five years or longer in Uptime Institute's 2022 survey, up from 34% in 2015, as reported by Network World (Uptime Institute via Network World, 2022).", "short_statement": null, "short_refs": null, "value": 52, "unit": "% of surveyed data center operators keeping servers five years or longer", "display_value": "52% (from 34%)", "display_label": "Uptime Institute Global Data Center Survey 2022", "display_hook": null, "row_label": "Uptime Institute, 2022: keeping servers five years or longer", "publisher_short": null, "geography": "Worldwide", "period": "2022", "population": "Respondents to Uptime Institute's Global Data Center Survey 2022 (and 2015 edition)", "sample_n": null, "publisher": "Network World (reporting Uptime Institute's Global Data Center Survey 2022)", "source_title": "Survey: Outages, staffing challenge data centers (Network World, Ann Bednarz, 20 September 2022)", "source_url": "https://www.networkworld.com/article/971460/survey-outages-staffing-challenge-data-centers.html", "source_type": "secondary", "source_access": "open", "published_at": "2022-09-20", "accessed_at": "2026-10-14", "quote": "In Uptime’s 2015 survey, 34% of respondents said they kept their servers in operation for five years or longer. In 2022, that climbed to 52%.", "locator": "Section 'Server refresh cycles getting longer'", "derived": false, "formula": null, "headline": false, "series": "uptime-servers-kept-five-years-or-longer", "history": [ { "period": "2015", "value": 34 } ], "notes": "Uptime's full 2022 report is behind a registration form (landing page saved as raw/migration-effort-cost/uptime-survey-2022.html, no figure in its key findings); Network World is the fetched document. Uptime attributes the trend partly to smaller efficiency gains from new Intel servers. Sample size not given in the article.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2022-09-52pct-keep-servers-five-years-or-longer-up-from-34pct-2015", "citation_text": "52% of data center operators kept their servers in operation for five years or longer in Uptime Institute's 2022 survey, up from 34% in 2015, as reported by Network World (Uptime Institute via Network World, 2022). Source: Network World (reporting Uptime Institute's Global Data Center Survey 2022), \"Survey: Outages, staffing challenge data centers (Network World, Ann Bednarz, 20 September 2022)\" (https://www.networkworld.com/article/971460/survey-outages-staffing-challenge-data-centers.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2022-09-52pct-keep-servers-five-years-or-longer-up-from-34pct-2015." }, { "id": "uptime-2020-01-27-upgrading-2015-server-in-2019-gives-20pct-more-work-per-watt", "family": "migration-effort-cost", "statement": "20% more processing power for the same watts is what upgrading a 2015 dual-socket server in 2019 might give, against 200% to 300% for upgrading a 2008/2009 server in 2012, in Uptime Institute's analysis of SPECpower results (Uptime Institute, 2020).", "short_statement": null, "short_refs": null, "value": 20, "unit": "% performance-per-watt gain from replacing a 2015 server with a 2019 server", "display_value": "20%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (SPECpower benchmark results)", "period": "2019", "population": "Dual-socket servers in the SPECpower benchmark dataset, averaged in 18-month intervals by release date", "sample_n": null, "publisher": "Uptime Institute", "source_title": "Optimizing server refresh cycles with an aging Moore's law (Uptime Institute Journal, Rabih Bashroush, 27 January 2020)", "source_url": "https://journal.uptimeinstitute.com/optimizing-server-refresh-cycles-with-an-aging-moores-law/", "source_type": "secondary", "source_access": "open", "published_at": "2020-01-27", "accessed_at": "2026-10-14", "quote": "The data suggests upgrading a 2015 server in 2019 might provide only a 20% boost in processing power for the same number of watts.", "locator": "Paragraph after Figure 1", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Analyst analysis of public benchmark data. The same post says the energy case for replacing servers up to nine years old remains strong, while the case for replacing servers up to three years old 'may be far less clear'. Fetched 2026-10-14 (raw/migration-effort-cost/uptime-journal-server-refresh.html).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2020-01-27-upgrading-2015-server-in-2019-gives-20pct-more-work-per-watt", "citation_text": "20% more processing power for the same watts is what upgrading a 2015 dual-socket server in 2019 might give, against 200% to 300% for upgrading a 2008/2009 server in 2012, in Uptime Institute's analysis of SPECpower results (Uptime Institute, 2020). Source: Uptime Institute, \"Optimizing server refresh cycles with an aging Moore's law (Uptime Institute Journal, Rabih Bashroush, 27 January 2020)\" (https://journal.uptimeinstitute.com/optimizing-server-refresh-cycles-with-an-aging-moores-law/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2020-01-27-upgrading-2015-server-in-2019-gives-20pct-more-work-per-watt." }, { "id": "uptime-2020-01-27-servers-idle-75pct-of-the-time", "family": "migration-effort-cost", "statement": "75% of the time, on average, is how long servers in real deployments sit in idle mode, which Uptime Institute says weakens the energy case for refreshing recent hardware (Uptime Institute, 2020).", "short_statement": null, "short_refs": null, "value": 75, "unit": "% of time servers spend in idle mode (average, real deployments)", "display_value": "75%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2020-01", "population": "Servers in real-life deployments (Uptime Institute Intelligence estimate; method not detailed in the post)", "sample_n": null, "publisher": "Uptime Institute", "source_title": "Optimizing server refresh cycles with an aging Moore's law (Uptime Institute Journal, Rabih Bashroush, 27 January 2020)", "source_url": "https://journal.uptimeinstitute.com/optimizing-server-refresh-cycles-with-an-aging-moores-law/", "source_type": "secondary", "source_access": "open", "published_at": "2020-01-27", "accessed_at": "2026-10-14", "quote": "Servers in real-life deployments tend to spend a substantial part of their time in idle mode — 75% of the time, on average.", "locator": "Paragraph beginning 'Over the past few years, while lithography stagnated at 14 nm'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Uptime's estimate; the underlying measurement is in its member report 'Beyond PUE: Tackling IT's wasted terawatts'. Fetched 2026-10-14.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2020-01-27-servers-idle-75pct-of-the-time", "citation_text": "75% of the time, on average, is how long servers in real deployments sit in idle mode, which Uptime Institute says weakens the energy case for refreshing recent hardware (Uptime Institute, 2020). Source: Uptime Institute, \"Optimizing server refresh cycles with an aging Moore's law (Uptime Institute Journal, Rabih Bashroush, 27 January 2020)\" (https://journal.uptimeinstitute.com/optimizing-server-refresh-cycles-with-an-aging-moores-law/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2020-01-27-servers-idle-75pct-of-the-time." }, { "id": "omdia-2022-north-american-enterprise-server-useful-life-5-4-years", "family": "migration-effort-cost", "statement": "5.4 years was the average useful life of a server at North American enterprises in Omdia's 2022 annual survey, continuing an upward trend, as reported by Data Center Knowledge (Omdia via Data Center Knowledge, 2022).", "short_statement": null, "short_refs": null, "value": 5.4, "unit": "years, average enterprise server useful life", "display_value": "5.4 years", "display_label": "", "display_hook": null, "row_label": "Omdia, 2022: useful life at North American enterprises", "publisher_short": null, "geography": "North America", "period": "2022", "population": "North American enterprises in Omdia's annual survey (sample size not reported)", "sample_n": null, "publisher": "Data Center Knowledge (reporting Omdia)", "source_title": "Data Center Hardware Refresh Cutback by Microsoft: What's Next? (Data Center Knowledge, 25 August 2022)", "source_url": "https://www.datacenterknowledge.com/hyperscalers/data-center-hardware-refresh-cutback-by-microsoft-what-s-next-", "source_type": "secondary", "source_access": "open", "published_at": "2022-08-25", "accessed_at": "2026-10-14", "quote": "Omdia’s annual surveys of North American enterprises show an upward trend in the average number of years a server is used, with the 2022 results noting that a server’s useful life at enterprises is now 5.4 years.", "locator": "Paragraph 4", "derived": false, "formula": null, "headline": false, "series": "server-life-cycle-years", "history": [], "notes": "Omdia's own blog returned a Cloudflare challenge (raw/migration-effort-cost/omdia-2023-12-blog.html), so the trade-press report is the fetched document. Omdia's Vladimir Galabov is quoted that the pandemic led enterprises to delay server refresh or move workloads to the cloud.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#omdia-2022-north-american-enterprise-server-useful-life-5-4-years", "citation_text": "5.4 years was the average useful life of a server at North American enterprises in Omdia's 2022 annual survey, continuing an upward trend, as reported by Data Center Knowledge (Omdia via Data Center Knowledge, 2022). Source: Data Center Knowledge (reporting Omdia), \"Data Center Hardware Refresh Cutback by Microsoft: What's Next? (Data Center Knowledge, 25 August 2022)\" (https://www.datacenterknowledge.com/hyperscalers/data-center-hardware-refresh-cutback-by-microsoft-what-s-next-). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#omdia-2022-north-american-enterprise-server-useful-life-5-4-years." }, { "id": "omdia-2022-most-enterprises-will-not-use-servers-beyond-seven-years", "family": "migration-effort-cost", "statement": "7 years is the most most enterprises will keep a server, Omdia's Vladimir Galabov wrote in the firm's 2022 survey report, while noting an appetite for six and even seven years where support can be arranged (Omdia via Data Center Knowledge, 2022).", "short_statement": null, "short_refs": null, "value": 7, "unit": "years, Omdia's expected upper limit of enterprise server use", "display_value": "7 years", "display_label": "", "display_hook": null, "row_label": "Omdia, 2022: the longest most enterprises keep a server", "publisher_short": null, "geography": "North America", "period": "2022", "population": "Analyst expectation drawn from Omdia's survey of North American enterprises", "sample_n": null, "publisher": "Data Center Knowledge (reporting Omdia)", "source_title": "Data Center Hardware Refresh Cutback by Microsoft: What's Next? (Data Center Knowledge, 25 August 2022)", "source_url": "https://www.datacenterknowledge.com/hyperscalers/data-center-hardware-refresh-cutback-by-microsoft-what-s-next-", "source_type": "secondary", "source_access": "open", "published_at": "2022-08-25", "accessed_at": "2026-10-14", "quote": "We believe that most end users will not use servers for longer than seven years.", "locator": "Paragraph 6 (quote from Vladimir Galabov)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Analyst opinion, not a measured share. Fetched 2026-10-14 (raw/migration-effort-cost/dck-microsoft-refresh-cutback.html).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#omdia-2022-most-enterprises-will-not-use-servers-beyond-seven-years", "citation_text": "7 years is the most most enterprises will keep a server, Omdia's Vladimir Galabov wrote in the firm's 2022 survey report, while noting an appetite for six and even seven years where support can be arranged (Omdia via Data Center Knowledge, 2022). Source: Data Center Knowledge (reporting Omdia), \"Data Center Hardware Refresh Cutback by Microsoft: What's Next? (Data Center Knowledge, 25 August 2022)\" (https://www.datacenterknowledge.com/hyperscalers/data-center-hardware-refresh-cutback-by-microsoft-what-s-next-). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#omdia-2022-most-enterprises-will-not-use-servers-beyond-seven-years." }, { "id": "microsoft-10k-fy2022-server-useful-life-extended-from-4-to-6-years", "family": "migration-effort-cost", "statement": "6 years became the estimated useful life of Microsoft's own server and network equipment from fiscal year 2023, up from four, a change Microsoft estimated would add $3.7 billion to fiscal 2023 operating income (Microsoft, 2022).", "short_statement": "Since fiscal 2023, Microsoft has estimated its own servers' useful life at **6 years**, up from four.", "short_refs": null, "value": 6, "unit": "years, estimated useful life of Microsoft's servers (accounting estimate)", "display_value": "6 years (from 4)", "display_label": "", "display_hook": null, "row_label": "Microsoft, from fiscal 2023", "publisher_short": null, "geography": "Worldwide (Microsoft's fleet)", "period": "2022-07", "population": "Microsoft's own server and network equipment (accounting estimate)", "sample_n": null, "publisher": "Microsoft (Form 10-K, fiscal year 2022)", "source_title": "Microsoft Corporation Form 10-K for the fiscal year ended June 30, 2022", "source_url": "https://www.sec.gov/Archives/edgar/data/789019/000156459022026876/msft-10k_20220630.htm", "source_type": "primary", "source_access": "open", "published_at": "2022-07-28", "accessed_at": "2026-10-14", "quote": "we determined we should increase the estimated useful lives of both server and network equipment from four years to six years", "locator": "Item 7, MD&A, 'Change in Accounting Estimate'; repeated in Note 1", "derived": false, "formula": null, "headline": false, "series": "hyperscaler-server-useful-life-years", "history": [ { "period": "FY2022", "value": 4 } ], "notes": "Company annual report filed with the SEC (primary); accounting estimate for the company's own data-centre fleet, not a survey of businesses. Microsoft had already lengthened the lives in July 2020 (to four years). Saved as raw/migration-effort-cost/msft-10k-fy2022.htm (6,215,965 bytes).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-10k-fy2022-server-useful-life-extended-from-4-to-6-years", "citation_text": "6 years became the estimated useful life of Microsoft's own server and network equipment from fiscal year 2023, up from four, a change Microsoft estimated would add $3.7 billion to fiscal 2023 operating income (Microsoft, 2022). Source: Microsoft (Form 10-K, fiscal year 2022), \"Microsoft Corporation Form 10-K for the fiscal year ended June 30, 2022\" (https://www.sec.gov/Archives/edgar/data/789019/000156459022026876/msft-10k_20220630.htm). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-10k-fy2022-server-useful-life-extended-from-4-to-6-years." }, { "id": "alphabet-10k-fy2022-server-useful-life-6-years-from-2023", "family": "migration-effort-cost", "statement": "6 years became the estimated useful life of Alphabet's servers and certain network equipment from January 2023, cutting 2023 depreciation by about $3.4 billion (Alphabet, 2023).", "short_statement": null, "short_refs": null, "value": 6, "unit": "years, estimated useful life of Alphabet's servers (accounting estimate)", "display_value": "6 years", "display_label": "", "display_hook": null, "row_label": "Alphabet, from 2023", "publisher_short": null, "geography": "Worldwide (Google's fleet)", "period": "2023-01", "population": "Alphabet's own servers and certain network equipment (accounting estimate)", "sample_n": null, "publisher": "Alphabet (Form 10-K, fiscal year 2022)", "source_title": "Alphabet Inc. Form 10-K for the fiscal year ended December 31, 2022", "source_url": "https://www.sec.gov/Archives/edgar/data/1652044/000165204423000016/goog-20221231.htm", "source_type": "primary", "source_access": "open", "published_at": "2023-02-03", "accessed_at": "2026-10-14", "quote": "In January 2023, we completed an assessment of the useful lives of our servers and network equipment, resulting in a change in the estimated useful life of our servers and certain network equipment to six years", "locator": "Item 7, MD&A, 'Change in Accounting Estimate'", "derived": false, "formula": null, "headline": false, "series": "hyperscaler-server-useful-life-years", "history": [], "notes": "Company annual report filed with the SEC (primary); accounting estimate for the company's own data-centre fleet, not a survey of businesses. Data Center Knowledge (August 2022) reported Google's earlier 2021 change from three to four years. EDGAR acceptance 2 February 2023 21:23, filing date 3 February 2023. Fetched 2026-10-14 (raw/migration-effort-cost/goog-10k-fy2022.htm).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#alphabet-10k-fy2022-server-useful-life-6-years-from-2023", "citation_text": "6 years became the estimated useful life of Alphabet's servers and certain network equipment from January 2023, cutting 2023 depreciation by about $3.4 billion (Alphabet, 2023). Source: Alphabet (Form 10-K, fiscal year 2022), \"Alphabet Inc. Form 10-K for the fiscal year ended December 31, 2022\" (https://www.sec.gov/Archives/edgar/data/1652044/000165204423000016/goog-20221231.htm). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#alphabet-10k-fy2022-server-useful-life-6-years-from-2023." }, { "id": "amazon-10k-2024-subset-of-servers-useful-life-cut-from-6-to-5-years", "family": "migration-effort-cost", "statement": "5 years became the useful life of a subset of Amazon's servers and networking equipment from 1 January 2025, cut from six years, which Amazon expected to reduce 2025 operating income by about $0.7 billion (Amazon, 2025).", "short_statement": null, "short_refs": null, "value": 5, "unit": "years, useful life of a subset of Amazon's servers (accounting estimate)", "display_value": "5 years (from 6)", "display_label": "", "display_hook": null, "row_label": "Amazon (a subset), from 2025", "publisher_short": null, "geography": "Worldwide (Amazon's fleet)", "period": "2025-01", "population": "A subset of Amazon's own servers and networking equipment (accounting estimate)", "sample_n": null, "publisher": "Amazon (Form 10-K, 2024)", "source_title": "Amazon.com, Inc. Form 10-K for the fiscal year ended December 31, 2024", "source_url": "https://www.sec.gov/Archives/edgar/data/1018724/000101872425000004/amzn-20241231.htm", "source_type": "primary", "source_access": "open", "published_at": "2025-02-07", "accessed_at": "2026-10-14", "quote": "are changing the useful lives of a subset of our servers and networking equipment, effective January 1, 2025, from six years to five years", "locator": "Note 1, 'Use of Estimates'", "derived": false, "formula": null, "headline": false, "series": "hyperscaler-server-useful-life-years", "history": [ { "period": "2024", "value": 6 } ], "notes": "Company annual report filed with the SEC (primary); accounting estimate for the company's own data-centre fleet, not a survey of businesses. The first hyperscaler to shorten server lives after years of extensions; Amazon also recorded about $920 million of accelerated depreciation for servers retired early in 2024. EDGAR acceptance 6 February 2025 18:40, filing date 7 February 2025. Saved as raw/migration-effort-cost/amzn-10k-fy2024.htm.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#amazon-10k-2024-subset-of-servers-useful-life-cut-from-6-to-5-years", "citation_text": "5 years became the useful life of a subset of Amazon's servers and networking equipment from 1 January 2025, cut from six years, which Amazon expected to reduce 2025 operating income by about $0.7 billion (Amazon, 2025). Source: Amazon (Form 10-K, 2024), \"Amazon.com, Inc. Form 10-K for the fiscal year ended December 31, 2024\" (https://www.sec.gov/Archives/edgar/data/1018724/000101872425000004/amzn-20241231.htm). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#amazon-10k-2024-subset-of-servers-useful-life-cut-from-6-to-5-years." }, { "id": "meta-10k-2024-server-useful-life-extended-to-5-5-years", "family": "migration-effort-cost", "statement": "5.5 years became the estimated useful life of certain Meta servers and network assets from fiscal 2025, a change Meta expected to cut 2025 depreciation by about $2.9 billion (Meta, 2025).", "short_statement": null, "short_refs": null, "value": 5.5, "unit": "years, estimated useful life of certain Meta servers (accounting estimate)", "display_value": "5.5 years", "display_label": "", "display_hook": null, "row_label": "Meta, from 2025", "publisher_short": null, "geography": "Worldwide (Meta's fleet)", "period": "2025-01", "population": "Certain Meta servers and network assets (accounting estimate)", "sample_n": null, "publisher": "Meta Platforms (Form 10-K, 2024)", "source_title": "Meta Platforms, Inc. Form 10-K for the fiscal year ended December 31, 2024", "source_url": "https://www.sec.gov/Archives/edgar/data/1326801/000132680125000017/meta-20241231.htm", "source_type": "primary", "source_access": "open", "published_at": "2025-01-30", "accessed_at": "2026-10-14", "quote": "In January 2025, we completed an assessment of the useful lives of certain servers and network assets, and determined we should extend the estimated useful lives to 5.5 years.", "locator": "Note 1, 'Use of Estimates'; MD&A 'Change in Accounting Estimate'", "derived": false, "formula": null, "headline": false, "series": "hyperscaler-server-useful-life-years", "history": [], "notes": "Company annual report filed with the SEC (primary); accounting estimate for the company's own data-centre fleet, not a survey of businesses. The 2024 property table gives servers and network assets 'Four to Five years'. EDGAR acceptance 29 January 2025 20:00, filing date 30 January 2025. Saved as raw/migration-effort-cost/meta-10k-fy2024.htm.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#meta-10k-2024-server-useful-life-extended-to-5-5-years", "citation_text": "5.5 years became the estimated useful life of certain Meta servers and network assets from fiscal 2025, a change Meta expected to cut 2025 depreciation by about $2.9 billion (Meta, 2025). Source: Meta Platforms (Form 10-K, 2024), \"Meta Platforms, Inc. Form 10-K for the fiscal year ended December 31, 2024\" (https://www.sec.gov/Archives/edgar/data/1326801/000132680125000017/meta-20241231.htm). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#meta-10k-2024-server-useful-life-extended-to-5-5-years." }, { "id": "techradar-2013-02-04-restates-idc-ageing-server-failure-rate-up-85pct", "family": "migration-effort-cost", "statement": "85% higher failure rates for servers kept past their makers' recommended replacement point is an IDC finding as restated by TechRadar in 2013, which also quotes IDC recommending a refresh at about 3.2 years; the IDC paper is not named (TechRadar, 2013).", "short_statement": null, "short_refs": null, "value": 85, "unit": "% increase in failure rate for servers not replaced when recommended (IDC, as restated)", "display_value": "85%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated", "period": "2013", "population": "Unnamed IDC research on x86 server reliability (not traced)", "sample_n": null, "publisher": "TechRadar (restating IDC)", "source_title": "Understanding a server replacement cycle (TechRadar, 4 February 2013)", "source_url": "https://www.techradar.com/news/world-of-tech/roundup/understanding-a-server-replacement-cycle-1128842", "source_type": "secondary", "source_access": "open", "published_at": "2013-02-04", "accessed_at": "2026-10-14", "quote": "research conduced by IDC indicates that the failure rate for those that are not replaced when their manufacturers recommend increases by 85%", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record: TechRadar does not name or link the IDC document, so the figure is untraced to IDC. The same article quotes an IDC white paper: 'A regular refresh at about 3.2 years would be appropriate' and says the 'usual' server lifespan is two to three years, both well below the five-year lives in IDC's own 2017 survey. Spelling 'conduced' is the source's. Fetched 2026-10-14.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techradar-2013-02-04-restates-idc-ageing-server-failure-rate-up-85pct", "citation_text": "85% higher failure rates for servers kept past their makers' recommended replacement point is an IDC finding as restated by TechRadar in 2013, which also quotes IDC recommending a refresh at about 3.2 years; the IDC paper is not named (TechRadar, 2013). Source: TechRadar (restating IDC), \"Understanding a server replacement cycle (TechRadar, 4 February 2013)\" (https://www.techradar.com/news/world-of-tech/roundup/understanding-a-server-replacement-cycle-1128842). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techradar-2013-02-04-restates-idc-ageing-server-failure-rate-up-85pct." }, { "id": "techtarget-2020-01-31-restates-idc-server-performance-erodes-14pct-a-year", "family": "migration-effort-cost", "statement": "14% a year is how fast server performance erodes, according to IDC research restated by TechTarget in 2020, which adds that a five-year-old server performs 40% below new; the IDC document is not named (TechTarget, 2020).", "short_statement": null, "short_refs": null, "value": 14, "unit": "% annual server performance erosion (IDC, as restated)", "display_value": "14% a year", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated", "period": "2020", "population": "Unnamed IDC research (not traced)", "sample_n": null, "publisher": "TechTarget (Brien Posey, restating IDC)", "source_title": "Make the case for a technology refresh strategy (TechTarget, Brien Posey, 31 January 2020)", "source_url": "https://www.techtarget.com/it-infrastructure/tip/Make-the-case-for-a-technology-refresh-strategy", "source_type": "secondary", "source_access": "open", "published_at": "2020-01-31", "accessed_at": "2026-10-14", "quote": "According to IDC research, server performance erodes at an annual average of 14%, so after five years, the server's performance is 40% less than when it was out of the box.", "locator": "Section on performance, first paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record; IDC original not traced. Arithmetic does not reconcile: 14% a year compounds to about 53% lower after five years (0.86^5 = 0.47) and to 70% lower if simple; neither is 40%. Do not publish as an IDC figure without the original. Fetched 2026-10-14.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techtarget-2020-01-31-restates-idc-server-performance-erodes-14pct-a-year", "citation_text": "14% a year is how fast server performance erodes, according to IDC research restated by TechTarget in 2020, which adds that a five-year-old server performs 40% below new; the IDC document is not named (TechTarget, 2020). Source: TechTarget (Brien Posey, restating IDC), \"Make the case for a technology refresh strategy (TechTarget, Brien Posey, 31 January 2020)\" (https://www.techtarget.com/it-infrastructure/tip/Make-the-case-for-a-technology-refresh-strategy). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techtarget-2020-01-31-restates-idc-server-performance-erodes-14pct-a-year." }, { "id": "techtarget-2020-01-31-restates-idc-older-servers-raise-unplanned-downtime-20pct", "family": "migration-effort-cost", "statement": "20% more unplanned downtime a year comes from older, slower and less reliable servers, according to IDC as restated by TechTarget in 2020; the IDC document is not named (TechTarget, 2020).", "short_statement": null, "short_refs": null, "value": 20, "unit": "% increase in yearly unplanned downtime from older servers (IDC, as restated)", "display_value": "20%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated", "period": "2020", "population": "Unnamed IDC research (not traced)", "sample_n": null, "publisher": "TechTarget (Brien Posey, restating IDC)", "source_title": "Make the case for a technology refresh strategy (TechTarget, Brien Posey, 31 January 2020)", "source_url": "https://www.techtarget.com/it-infrastructure/tip/Make-the-case-for-a-technology-refresh-strategy", "source_type": "secondary", "source_access": "open", "published_at": "2020-01-31", "accessed_at": "2026-10-14", "quote": "Older servers with lower performance and higher failure rates increase yearly unplanned downtime by 20%, IDC states.", "locator": "Section on downtime, second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record; IDC original not traced. The only server-age-specific downtime figure found; general downtime costs (ITIC, Uptime, Ponemon) are on the data-migration-failure-rate page and are not repeated here. Fetched 2026-10-14.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techtarget-2020-01-31-restates-idc-older-servers-raise-unplanned-downtime-20pct", "citation_text": "20% more unplanned downtime a year comes from older, slower and less reliable servers, according to IDC as restated by TechTarget in 2020; the IDC document is not named (TechTarget, 2020). Source: TechTarget (Brien Posey, restating IDC), \"Make the case for a technology refresh strategy (TechTarget, Brien Posey, 31 January 2020)\" (https://www.techtarget.com/it-infrastructure/tip/Make-the-case-for-a-technology-refresh-strategy). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techtarget-2020-01-31-restates-idc-older-servers-raise-unplanned-downtime-20pct." }, { "id": "lenovo-2017-09-case-study-refresh-20-servers-to-4-saves-71pct-over-4-years", "family": "migration-effort-cost", "statement": "71%, or $740,731 over four years, was the saving a large manufacturer projected from replacing 20 four-year-old HPE servers with four Lenovo ThinkSystem SR950 servers running Windows Server 2016, in a 2017 Lenovo case study (Lenovo, 2017).", "short_statement": null, "short_refs": null, "value": 71, "unit": "% projected four-year cost saving (single-company business case)", "display_value": "71% ($740,731)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated (one manufacturing company)", "period": "2017-09", "population": "One large manufacturing company's business case for replacing 20 four-year-old HPE DL580 servers with four Lenovo ThinkSystem SR950 servers running Windows Server 2016 Datacenter and VMware vSphere (vendor case study)", "sample_n": 1, "publisher": "Lenovo (Lenovo Press)", "source_title": "The Value of Refreshing Your 4-Socket Servers with the ThinkSystem SR950 (Lenovo Press LP0753, Randall Lundin, 22 September 2017)", "source_url": "https://lenovopress.lenovo.com/lp0753-the-value-of-refreshing-your-4-socket-servers-with-the-thinksystem-sr950", "source_type": "manufacturer", "source_access": "open", "published_at": "2017-09-22", "accessed_at": "2026-10-14", "quote": "Based on its financial assessment the company determined it could save 71% or $740,731 over 4 years by migrating its mission critical applications to four ThinkSystem SR950 servers instead of maintaining twenty HPE DL580 servers.", "locator": "Section 'Case Study Overview', first paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor case study (Lenovo selling the replacement server); a single unnamed company's projected business case, not measured results. Page fetched 2026-10-14 (raw/migration-effort-cost/lenovo-lp0753.html; a PDF print of it is lenovo-lp0753.pdf). The SR950 is now a withdrawn product. The same case study projects an ROI of 392% and a 10-month payback on a 'total investment of $188,908 for server hardware and migration costs'. The paper's general claim: new servers can cut 'annual server related operating costs by up to 70% or more'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#lenovo-2017-09-case-study-refresh-20-servers-to-4-saves-71pct-over-4-years", "citation_text": "71%, or $740,731 over four years, was the saving a large manufacturer projected from replacing 20 four-year-old HPE servers with four Lenovo ThinkSystem SR950 servers running Windows Server 2016, in a 2017 Lenovo case study (Lenovo, 2017). Source: Lenovo (Lenovo Press), \"The Value of Refreshing Your 4-Socket Servers with the ThinkSystem SR950 (Lenovo Press LP0753, Randall Lundin, 22 September 2017)\" (https://lenovopress.lenovo.com/lp0753-the-value-of-refreshing-your-4-socket-servers-with-the-thinksystem-sr950). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#lenovo-2017-09-case-study-refresh-20-servers-to-4-saves-71pct-over-4-years." }, { "id": "lenovo-2017-09-case-study-server-consolidation-cuts-software-maintenance-90pct", "family": "migration-effort-cost", "statement": "90%, or $617,040 over four years, of Windows Server 2016 Datacenter and VMware vSphere maintenance cost was the saving projected from running on four new servers instead of 20 old ones, in a 2017 Lenovo case study (Lenovo, 2017).", "short_statement": null, "short_refs": null, "value": 90, "unit": "% projected four-year software maintenance saving (single-company business case)", "display_value": "90% ($617,040)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated (one manufacturing company)", "period": "2017-09", "population": "One large manufacturing company's business case for replacing 20 four-year-old HPE DL580 servers with four Lenovo ThinkSystem SR950 servers running Windows Server 2016 Datacenter and VMware vSphere (vendor case study)", "sample_n": 1, "publisher": "Lenovo (Lenovo Press)", "source_title": "The Value of Refreshing Your 4-Socket Servers with the ThinkSystem SR950 (Lenovo Press LP0753, Randall Lundin, 22 September 2017)", "source_url": "https://lenovopress.lenovo.com/lp0753-the-value-of-refreshing-your-4-socket-servers-with-the-thinksystem-sr950", "source_type": "manufacturer", "source_access": "open", "published_at": "2017-09-22", "accessed_at": "2026-10-14", "quote": "Replacing 20 of the HPE servers with only four of the ThinkSystem servers saves $617,040 or 90% in software maintenance cost.", "locator": "Section on software costs, paragraph before Table 6", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor case study (Lenovo selling the replacement server); a single unnamed company's projected business case, not measured results. Page fetched 2026-10-14 (raw/migration-effort-cost/lenovo-lp0753.html; a PDF print of it is lenovo-lp0753.pdf). The SR950 is now a withdrawn product. The saving comes from per-socket and per-core software licences on fewer machines; it illustrates why consolidation, not a like-for-like OS upgrade, drives most of the case.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#lenovo-2017-09-case-study-server-consolidation-cuts-software-maintenance-90pct", "citation_text": "90%, or $617,040 over four years, of Windows Server 2016 Datacenter and VMware vSphere maintenance cost was the saving projected from running on four new servers instead of 20 old ones, in a 2017 Lenovo case study (Lenovo, 2017). Source: Lenovo (Lenovo Press), \"The Value of Refreshing Your 4-Socket Servers with the ThinkSystem SR950 (Lenovo Press LP0753, Randall Lundin, 22 September 2017)\" (https://lenovopress.lenovo.com/lp0753-the-value-of-refreshing-your-4-socket-servers-with-the-thinksystem-sr950). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#lenovo-2017-09-case-study-server-consolidation-cuts-software-maintenance-90pct." }, { "id": "lenovo-2017-09-each-server-generation-15-to-40pct-faster", "family": "migration-effort-cost", "statement": "15% to 40% baseline performance gain with each new server generation is Lenovo's claim in its 2017 paper on refreshing four-socket servers (Lenovo, 2017).", "short_statement": null, "short_refs": null, "value": 15, "unit": "% baseline performance gain per server generation (lower bound of Lenovo's 15-40% claim)", "display_value": "15% to 40%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2017-09", "population": "Lenovo's general claim about server generations (manufacturer, no method stated)", "sample_n": null, "publisher": "Lenovo (Lenovo Press)", "source_title": "The Value of Refreshing Your 4-Socket Servers with the ThinkSystem SR950 (Lenovo Press LP0753, Randall Lundin, 22 September 2017)", "source_url": "https://lenovopress.lenovo.com/lp0753-the-value-of-refreshing-your-4-socket-servers-with-the-thinksystem-sr950", "source_type": "manufacturer", "source_access": "open", "published_at": "2017-09-22", "accessed_at": "2026-10-14", "quote": "Each new generation of servers delivers baseline performance gains between 15 and 40 percent.", "locator": "Section 'Reasons for Refreshing Servers', 'Productivity'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor case study (Lenovo selling the replacement server); a single unnamed company's projected business case, not measured results. Page fetched 2026-10-14 (raw/migration-effort-cost/lenovo-lp0753.html; a PDF print of it is lenovo-lp0753.pdf). The SR950 is now a withdrawn product. Compare Uptime Institute's January 2020 finding that a 2015-to-2019 upgrade gave only about 20% more work per watt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#lenovo-2017-09-each-server-generation-15-to-40pct-faster", "citation_text": "15% to 40% baseline performance gain with each new server generation is Lenovo's claim in its 2017 paper on refreshing four-socket servers (Lenovo, 2017). Source: Lenovo (Lenovo Press), \"The Value of Refreshing Your 4-Socket Servers with the ThinkSystem SR950 (Lenovo Press LP0753, Randall Lundin, 22 September 2017)\" (https://lenovopress.lenovo.com/lp0753-the-value-of-refreshing-your-4-socket-servers-with-the-thinksystem-sr950). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#lenovo-2017-09-each-server-generation-15-to-40pct-faster." }, { "id": "principled-technologies-2018-08-preinstalled-windows-server-deploys-82pct-faster", "family": "migration-effort-cost", "statement": "82% less hands-on deployment time, just over 3 minutes against just over 20, was Principled Technologies' result for a Dell EMC PowerEdge R740 shipped with Windows Server 2016 pre-installed versus installing it manually, in a 2018 test for Dell EMC (Principled Technologies, 2018).", "short_statement": null, "short_refs": null, "value": 82, "unit": "% less hands-on deployment time (single-server lab test)", "display_value": "82% less time", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United States (Principled Technologies lab, Durham NC)", "period": "2018-06", "population": "One Dell EMC PowerEdge R740 deployed with and without pre-installed Windows Server 2016 Standard in Principled Technologies' lab (hands-on test, commissioned by Dell EMC)", "sample_n": 1, "publisher": "Principled Technologies (commissioned by Dell EMC)", "source_title": "Spend less time, effort, and money by choosing a Dell EMC server with pre-installed Microsoft software (Principled Technologies, August 2018)", "source_url": "https://www.principledtechnologies.com/Dell/PowerEdge_R740_Microsoft_OEM_preinstalled_0818.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2018-08-20", "accessed_at": "2026-10-14", "quote": "For Alexandria, that’s a savings of over 16 minutes of hands-on labor—an 82 percent reduction in deployment time", "locator": "Page 2, 'Reduce hands-on IT time and improve a server's time to value'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor-commissioned lab test: Principled Technologies is a technology marketing firm and the report promotes Dell EMC servers with OEM software. It measures a new-server deployment, not a migration of an existing server. PDF fetched 2026-10-14 (raw/migration-effort-cost/pt-r740-2018.pdf; same file at aws.principledtechnologies.com). Also 33 fewer steps (5 against 38 per the methodology document). Testing concluded 14 June 2018 per the companion 'science' PDF.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#principled-technologies-2018-08-preinstalled-windows-server-deploys-82pct-faster", "citation_text": "82% less hands-on deployment time, just over 3 minutes against just over 20, was Principled Technologies' result for a Dell EMC PowerEdge R740 shipped with Windows Server 2016 pre-installed versus installing it manually, in a 2018 test for Dell EMC (Principled Technologies, 2018). Source: Principled Technologies (commissioned by Dell EMC), \"Spend less time, effort, and money by choosing a Dell EMC server with pre-installed Microsoft software (Principled Technologies, August 2018)\" (https://www.principledtechnologies.com/Dell/PowerEdge_R740_Microsoft_OEM_preinstalled_0818.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#principled-technologies-2018-08-preinstalled-windows-server-deploys-82pct-faster." }, { "id": "principled-technologies-2018-08-preinstalled-windows-server-saves-222-usd-licence", "family": "migration-effort-cost", "statement": "$222 per server (25% of a $882 licence cost) was the saving Principled Technologies found from buying a Dell EMC PowerEdge R740 with Windows Server 2016 Standard pre-installed rather than licensing it separately, in a 2018 test for Dell EMC (Principled Technologies, 2018).", "short_statement": null, "short_refs": null, "value": 222, "unit": "USD licence saving per server (OEM pre-installed versus separately licensed Windows Server 2016 Standard)", "display_value": "$222", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United States", "period": "2018-06", "population": "One Dell EMC PowerEdge R740 deployed with and without pre-installed Windows Server 2016 Standard in Principled Technologies' lab (hands-on test, commissioned by Dell EMC)", "sample_n": 1, "publisher": "Principled Technologies (commissioned by Dell EMC)", "source_title": "Spend less time, effort, and money by choosing a Dell EMC server with pre-installed Microsoft software (Principled Technologies, August 2018)", "source_url": "https://www.principledtechnologies.com/Dell/PowerEdge_R740_Microsoft_OEM_preinstalled_0818.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2018-08-20", "accessed_at": "2026-10-14", "quote": "purchasing the Dell EMC PowerEdge R740 with pre-installed Microsoft OEM software can save up to $222 per server. That’s 25 percent of the licensing cost", "locator": "Page 3, 'Help reduce the company's bottom line'; cost table $882.00 / $659.80 / $222.20", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor-commissioned lab test: Principled Technologies is a technology marketing firm and the report promotes Dell EMC servers with OEM software. It measures a new-server deployment, not a migration of an existing server. PDF fetched 2026-10-14 (raw/migration-effort-cost/pt-r740-2018.pdf; same file at aws.principledtechnologies.com). The table gives $222.20; PT's own press release on PR.com (21 August 2018) says $223.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#principled-technologies-2018-08-preinstalled-windows-server-saves-222-usd-licence", "citation_text": "$222 per server (25% of a $882 licence cost) was the saving Principled Technologies found from buying a Dell EMC PowerEdge R740 with Windows Server 2016 Standard pre-installed rather than licensing it separately, in a 2018 test for Dell EMC (Principled Technologies, 2018). Source: Principled Technologies (commissioned by Dell EMC), \"Spend less time, effort, and money by choosing a Dell EMC server with pre-installed Microsoft software (Principled Technologies, August 2018)\" (https://www.principledtechnologies.com/Dell/PowerEdge_R740_Microsoft_OEM_preinstalled_0818.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#principled-technologies-2018-08-preinstalled-windows-server-saves-222-usd-licence." }, { "id": "prcom-2018-08-21-restates-principled-technologies-licence-saving-as-223-usd", "family": "migration-effort-cost", "statement": "$223 is the licence saving Principled Technologies' own press release gave for its 2018 Dell EMC pre-installed Windows Server test, against $222 ($222.20 in the table) in the report itself (Principled Technologies via PR.com, 2018).", "short_statement": null, "short_refs": null, "value": 223, "unit": "USD licence saving per server (as restated in the press release)", "display_value": "$223", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "United States", "period": "2018-08", "population": "One Dell EMC PowerEdge R740 deployed with and without pre-installed Windows Server 2016 Standard in Principled Technologies' lab (hands-on test, commissioned by Dell EMC)", "sample_n": 1, "publisher": "PR.com (Principled Technologies press release)", "source_title": "Principled Technologies Finds Choosing a Dell EMC Server with Pre-Installed Microsoft Software Can Save Time, Effort, and Money (PR.com, 21 August 2018)", "source_url": "https://www.pr.com/press-release/735035", "source_type": "manufacturer", "source_access": "open", "published_at": "2018-08-21", "accessed_at": "2026-10-14", "quote": "in 82 percent less time and with 33 fewer steps compared to the server without the software, in addition to saving $223 on licensing costs.", "locator": "Press release body, first paragraph after dateline", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement record: $1 rounding drift from the report's $222.20. Fetched 2026-10-14 (raw/migration-effort-cost/pr-com-735035.html).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#prcom-2018-08-21-restates-principled-technologies-licence-saving-as-223-usd", "citation_text": "$223 is the licence saving Principled Technologies' own press release gave for its 2018 Dell EMC pre-installed Windows Server test, against $222 ($222.20 in the table) in the report itself (Principled Technologies via PR.com, 2018). Source: PR.com (Principled Technologies press release), \"Principled Technologies Finds Choosing a Dell EMC Server with Pre-Installed Microsoft Software Can Save Time, Effort, and Money (PR.com, 21 August 2018)\" (https://www.pr.com/press-release/735035). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#prcom-2018-08-21-restates-principled-technologies-licence-saving-as-223-usd." }, { "id": "datto-2021-06-only-5pct-of-msps-expect-on-premises-server-use-to-increase", "family": "migration-effort-cost", "statement": "5% of managed service providers expected their clients' on-premises server use to increase over the next three years, in Datto's 2021 survey of 1,884 MSPs worldwide (Datto, 2021).", "short_statement": null, "short_refs": null, "value": 5, "unit": "% of surveyed MSPs expecting client on-premises server use to rise in three years", "display_value": "5%", "display_label": "Datto survey of 1,884 MSPs, 2021", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (North America, Europe, APAC)", "period": "2021", "population": "1,884 managed service provider decision-makers worldwide (610 North America, 744 Europe, rest APAC), 15-minute online survey by Strategy Analytics for Datto; 17% were active Datto partners", "sample_n": 1884, "publisher": "Datto", "source_title": "Datto's Global State of the MSP Report 2021 (Datto, survey by Strategy Analytics)", "source_url": "https://i.nextmedia.com.au/Reports/20210915023810_Datto2021_State-of-the-MSP-Report.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2021-06-22", "accessed_at": "2026-10-14", "quote": "Not surprisingly, on-prem server use is in decline. Only 5% of MSPs expect on-premises server use to increase over the next three years.", "locator": "Page 19, 'SMBs Shift to the Cloud', second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor-sponsored survey (Datto sells backup and RMM to MSPs; survey by Strategy Analytics). The copy fetched is hosted by nextmedia.com.au (iTnews); Datto's own link now redirects to Kaseya. published_at is the PDF creation date (22 June 2021). The report does not ask about server migration projects or their pricing. Fetched 2026-10-14 (raw/migration-effort-cost/datto-2021-state-of-msp.pdf).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#datto-2021-06-only-5pct-of-msps-expect-on-premises-server-use-to-increase", "citation_text": "5% of managed service providers expected their clients' on-premises server use to increase over the next three years, in Datto's 2021 survey of 1,884 MSPs worldwide (Datto, 2021). Source: Datto, \"Datto's Global State of the MSP Report 2021 (Datto, survey by Strategy Analytics)\" (https://i.nextmedia.com.au/Reports/20210915023810_Datto2021_State-of-the-MSP-Report.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#datto-2021-06-only-5pct-of-msps-expect-on-premises-server-use-to-increase." }, { "id": "datto-2022-10-31-half-of-msps-expect-75pct-of-workloads-in-public-cloud-in-three-years", "family": "migration-effort-cost", "statement": "Half of managed service providers expected 75% of their clients' workloads to be in the public cloud within three years, in Datto's 2022 Global State of the MSP survey of 1,800 MSPs (Datto, 2022).", "short_statement": null, "short_refs": null, "value": 50, "unit": "% of surveyed MSPs expecting 75% of client workloads in public cloud in three years", "display_value": "Half", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2022", "population": "About 1,800 MSPs worldwide surveyed for Datto's Global State of the MSP Report 2022", "sample_n": 1800, "publisher": "Kaseya (Datto press release)", "source_title": "Datto Global State of the MSP Report Reveals Biggest Challenges Facing MSPs (Kaseya press release, 31 October 2022)", "source_url": "https://www.kaseya.com/press-release/datto-global-state-of-the-msp-report-reveals-biggest-challenges-facing-msps/", "source_type": "manufacturer", "source_access": "open", "published_at": "2022-10-31", "accessed_at": "2026-10-14", "quote": "Yet half of MSP respondents said they expect 75% of workloads to be in the public cloud in three years.", "locator": "Section on cloud integration", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor-sponsored survey (Datto, owned by Kaseya). The trade-press copies (ChannelWeb, Business of Tech) returned Cloudflare challenges. Contrast with 2026 operator surveys showing most server estates still on-premises (on-premises-and-cloud-share family). Fetched 2026-10-14 (raw/migration-effort-cost/kaseya-pr-datto-2022.html).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#datto-2022-10-31-half-of-msps-expect-75pct-of-workloads-in-public-cloud-in-three-years", "citation_text": "Half of managed service providers expected 75% of their clients' workloads to be in the public cloud within three years, in Datto's 2022 Global State of the MSP survey of 1,800 MSPs (Datto, 2022). Source: Kaseya (Datto press release), \"Datto Global State of the MSP Report Reveals Biggest Challenges Facing MSPs (Kaseya press release, 31 October 2022)\" (https://www.kaseya.com/press-release/datto-global-state-of-the-msp-report-reveals-biggest-challenges-facing-msps/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#datto-2022-10-31-half-of-msps-expect-75pct-of-workloads-in-public-cloud-in-three-years." }, { "id": "connectwise-service-leadership-2025-02-13-msp-project-services-gross-margin-12-9pct-q4-2024", "family": "migration-effort-cost", "statement": "12.9% was the average project services gross margin of managed service providers in Q4 2024, down from 23% a year earlier as project work dropped, in ConnectWise's Service Leadership Index (ConnectWise, 2025).", "short_statement": null, "short_refs": null, "value": 12.9, "unit": "% average MSP project services gross margin, Q4 2024", "display_value": "12.9% (from 23%)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America, Europe, Australia/New Zealand", "period": "2024-Q4", "population": "IT solution providers in ConnectWise's Service Leadership Index benchmark (MSPs and VARs in North America, Europe and Australia/New Zealand; sample size not stated)", "sample_n": null, "publisher": "ConnectWise (Service Leadership)", "source_title": "Service Leadership Index Q4 Data Reveals MSP Profitability Remains Near Historic Highs While Managed Service Revenue Growth Continues to Slowdown (ConnectWise press release, 13 February 2025)", "source_url": "https://www.connectwise.com/company/press/releases/service-leadership-index-q4-data", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-02-13", "accessed_at": "2026-10-14", "quote": "the reduction in projects led to a drop in average project services gross margins, from 23% in Q4 2023 to 12.9% in Q4 2024, due to lower project team utilization.", "locator": "Paragraph 5", "derived": false, "formula": null, "headline": false, "series": "service-leadership-msp-project-services-gross-margin", "history": [ { "period": "2023-Q4", "value": 23 }, { "period": "2024-Q2", "value": 19.4 } ], "notes": "Vendor benchmark data (ConnectWise sells PSA/RMM to MSPs). 'Project services' covers all one-off MSP projects, of which server migrations are one kind; the index does not break them out. No MSP survey found that reports server-migration project counts or prices. Fetched 2026-10-14 (raw/migration-effort-cost/connectwise-sl-q4-2024.html).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#connectwise-service-leadership-2025-02-13-msp-project-services-gross-margin-12-9pct-q4-2024", "citation_text": "12.9% was the average project services gross margin of managed service providers in Q4 2024, down from 23% a year earlier as project work dropped, in ConnectWise's Service Leadership Index (ConnectWise, 2025). Source: ConnectWise (Service Leadership), \"Service Leadership Index Q4 Data Reveals MSP Profitability Remains Near Historic Highs While Managed Service Revenue Growth Continues to Slowdown (ConnectWise press release, 13 February 2025)\" (https://www.connectwise.com/company/press/releases/service-leadership-index-q4-data). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#connectwise-service-leadership-2025-02-13-msp-project-services-gross-margin-12-9pct-q4-2024." }, { "id": "connectwise-service-leadership-2024-08-06-msp-project-services-gross-margin-19-4pct-q2-2024", "family": "migration-effort-cost", "statement": "19.4% was the average project and professional services gross margin of managed service providers in Q2 2024, down from 24.6% in Q1, in ConnectWise's Service Leadership data report (ConnectWise, 2024).", "short_statement": null, "short_refs": null, "value": 19.4, "unit": "% average MSP project/professional services gross margin, Q2 2024", "display_value": "19.4% (from 24.6%)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America, Europe, Australia/New Zealand", "period": "2024-Q2", "population": "IT solution providers in ConnectWise's Service Leadership Index benchmark (MSPs and VARs in North America, Europe and Australia/New Zealand; sample size not stated)", "sample_n": null, "publisher": "ConnectWise (Service Leadership)", "source_title": "Service Leadership Q2 Data Report Reveals Slowing Managed Service Revenue Growth Worldwide, but MSP Profitability Remains Strong (ConnectWise press release, 6 August 2024)", "source_url": "https://www.connectwise.com/company/press/releases/2024-08-06-service-leadership-q2-data-report", "source_type": "manufacturer", "source_access": "open", "published_at": "2024-08-06", "accessed_at": "2026-10-14", "quote": "project/professional services gross margin experienced a decline, dropping to 19.4% from 24.6% in Q1", "locator": "Paragraph on gross margins", "derived": false, "formula": null, "headline": false, "series": "service-leadership-msp-project-services-gross-margin", "history": [ { "period": "2024-Q1", "value": 24.6 } ], "notes": "Vendor benchmark data. Managed-service gross margin in the same quarter was 46.2%, so one-off project work (including migrations) earned MSPs less than half the margin of recurring services. Fetched 2026-10-14 (raw/migration-effort-cost/connectwise-sl-q2-2024.html).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#connectwise-service-leadership-2024-08-06-msp-project-services-gross-margin-19-4pct-q2-2024", "citation_text": "19.4% was the average project and professional services gross margin of managed service providers in Q2 2024, down from 24.6% in Q1, in ConnectWise's Service Leadership data report (ConnectWise, 2024). Source: ConnectWise (Service Leadership), \"Service Leadership Q2 Data Report Reveals Slowing Managed Service Revenue Growth Worldwide, but MSP Profitability Remains Strong (ConnectWise press release, 6 August 2024)\" (https://www.connectwise.com/company/press/releases/2024-08-06-service-leadership-q2-data-report). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#connectwise-service-leadership-2024-08-06-msp-project-services-gross-margin-19-4pct-q2-2024." }, { "id": "symantec-2010-10-two-hours-user-downtime-top-tier-vs-six-hours-bottom-tier", "family": "migration-effort-cost", "statement": "2 hours offline was the user downtime at organisations whose IT spent 20 hours preparing for Windows 7, against 6 hours where IT spent nine hours, among more than 1,300 IT managers surveyed by Symantec in 2010 (Symantec, 2010).", "short_statement": null, "short_refs": null, "value": 2, "unit": "hours of end-user downtime during migration (top-tier organisations)", "display_value": "2 hours vs 6", "display_label": "Symantec survey of more than 1,300 IT managers, 2010 (desktop migration)", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2010-08", "population": "More than 1,300 IT managers worldwide at businesses that had completed a Windows 7 migration (phone survey by Applied Research for Symantec, August 2010)", "sample_n": 1300, "publisher": "Symantec", "source_title": "The Results Are In: Windows 7 Migration Survey Finds that Planning Plays a Key Role in Successful Upgrades", "source_url": "https://www.symantec.com/connect/blogs/results-are-windows-7-migration-survey-finds-planning-plays-key-role-successful-upgrades", "source_type": "manufacturer", "source_access": "open", "published_at": "2010-10-21", "accessed_at": "2026-10-14", "quote": "The lower tier of organizations – whose IT managers spent an average of nine hours in preparation for the upgrade – said that their users were offline for six hours during the migration", "locator": "Wayback snapshot https://web.archive.org/web/20111219222421/http://www.symantec.com/connect/blogs/results-are-windows-7-migration-survey-finds-planning-plays-key-role-successful-upgrades; section 'Best, and worst, practices'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Desktop (Windows 7) migration survey, not a server migration: kept on this page only as the published planning-versus-downtime comparison and labelled as a PC migration. Vendor-sponsored (Symantec sold Altiris and Ghost migration tooling). Symantec's blog says 'more than 1,300' IT managers; Redmond Magazine, Datamation and ESJ report 1,360 respondents. The symantec.com page is offline; the Wayback snapshot of 19 December 2011 was fetched again on 2026-10-14 (raw/migration-effort-cost/wayback-symantec-connect-2010.html). Same id as on the data-migration-failure-rate page. The source uses spaced en dashes, kept verbatim in the quote.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#symantec-2010-10-two-hours-user-downtime-top-tier-vs-six-hours-bottom-tier", "citation_text": "2 hours offline was the user downtime at organisations whose IT spent 20 hours preparing for Windows 7, against 6 hours where IT spent nine hours, among more than 1,300 IT managers surveyed by Symantec in 2010 (Symantec, 2010). Source: Symantec, \"The Results Are In: Windows 7 Migration Survey Finds that Planning Plays a Key Role in Successful Upgrades\" (https://www.symantec.com/connect/blogs/results-are-windows-7-migration-survey-finds-planning-plays-key-role-successful-upgrades). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#symantec-2010-10-two-hours-user-downtime-top-tier-vs-six-hours-bottom-tier." }, { "id": "symantec-2010-10-20-vs-9-it-hours-of-migration-preparation", "family": "migration-effort-cost", "statement": "20 hours of IT preparation on average was the top tier's investment in a Windows 7 migration, against nine hours for the bottom tier, among more than 1,300 IT managers surveyed by Symantec in 2010 (Symantec, 2010).", "short_statement": null, "short_refs": null, "value": 20, "unit": "average IT hours of preparation (top-tier organisations)", "display_value": "20 hours", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2010-08", "population": "More than 1,300 IT managers worldwide at businesses that had completed a Windows 7 migration (phone survey by Applied Research for Symantec, August 2010)", "sample_n": 1300, "publisher": "Symantec", "source_title": "The Results Are In: Windows 7 Migration Survey Finds that Planning Plays a Key Role in Successful Upgrades", "source_url": "https://www.symantec.com/connect/blogs/results-are-windows-7-migration-survey-finds-planning-plays-key-role-successful-upgrades", "source_type": "manufacturer", "source_access": "open", "published_at": "2010-10-21", "accessed_at": "2026-10-14", "quote": "the top tier refers to organizations whose IT managers spent 20 hours on average in preparation – resulting in users being offline only two hours", "locator": "Wayback snapshot https://web.archive.org/web/20111219222421/http://www.symantec.com/connect/blogs/results-are-windows-7-migration-survey-finds-planning-plays-key-role-successful-upgrades; section 'Best, and worst, practices'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Desktop (Windows 7) migration survey, not a server migration: kept on this page only as the published planning-versus-downtime comparison and labelled as a PC migration. Vendor-sponsored (Symantec sold Altiris and Ghost migration tooling). Symantec's blog says 'more than 1,300' IT managers; Redmond Magazine, Datamation and ESJ report 1,360 respondents. The symantec.com page is offline; the Wayback snapshot of 19 December 2011 was fetched again on 2026-10-14 (raw/migration-effort-cost/wayback-symantec-connect-2010.html). Same id as on the data-migration-failure-rate page. Drift: Redmond Magazine quotes the report as 'a median of 20 IT man-hours' and 'nine IT man-hours'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#symantec-2010-10-20-vs-9-it-hours-of-migration-preparation", "citation_text": "20 hours of IT preparation on average was the top tier's investment in a Windows 7 migration, against nine hours for the bottom tier, among more than 1,300 IT managers surveyed by Symantec in 2010 (Symantec, 2010). Source: Symantec, \"The Results Are In: Windows 7 Migration Survey Finds that Planning Plays a Key Role in Successful Upgrades\" (https://www.symantec.com/connect/blogs/results-are-windows-7-migration-survey-finds-planning-plays-key-role-successful-upgrades). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#symantec-2010-10-20-vs-9-it-hours-of-migration-preparation." }, { "id": "symantec-2010-10-more-than-80pct-said-planning-helped-migration", "family": "migration-effort-cost", "statement": "More than 80% of companies said planning helped their Windows 7 migration and minimised its cost, among more than 1,300 IT managers surveyed by Symantec in 2010 (Symantec, 2010).", "short_statement": null, "short_refs": null, "value": 80, "unit": "% of surveyed companies (planning was helpful)", "display_value": "80%+", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2010-08", "population": "More than 1,300 IT managers worldwide at businesses that had completed a Windows 7 migration (phone survey by Applied Research for Symantec, August 2010)", "sample_n": 1300, "publisher": "Symantec", "source_title": "The Results Are In: Windows 7 Migration Survey Finds that Planning Plays a Key Role in Successful Upgrades", "source_url": "https://www.symantec.com/connect/blogs/results-are-windows-7-migration-survey-finds-planning-plays-key-role-successful-upgrades", "source_type": "manufacturer", "source_access": "open", "published_at": "2010-10-21", "accessed_at": "2026-10-14", "quote": "More than 80 percent of companies said that this planning was helpful in facilitating the migration, as well as minimizing the cost.", "locator": "Wayback snapshot https://web.archive.org/web/20111219222421/http://www.symantec.com/connect/blogs/results-are-windows-7-migration-survey-finds-planning-plays-key-role-successful-upgrades; section 'Preparation for your migration'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Desktop (Windows 7) migration survey, not a server migration: kept on this page only as the published planning-versus-downtime comparison and labelled as a PC migration. Vendor-sponsored (Symantec sold Altiris and Ghost migration tooling). Symantec's blog says 'more than 1,300' IT managers; Redmond Magazine, Datamation and ESJ report 1,360 respondents. The symantec.com page is offline; the Wayback snapshot of 19 December 2011 was fetched again on 2026-10-14 (raw/migration-effort-cost/wayback-symantec-connect-2010.html). Same id as on the data-migration-failure-rate page.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#symantec-2010-10-more-than-80pct-said-planning-helped-migration", "citation_text": "More than 80% of companies said planning helped their Windows 7 migration and minimised its cost, among more than 1,300 IT managers surveyed by Symantec in 2010 (Symantec, 2010). Source: Symantec, \"The Results Are In: Windows 7 Migration Survey Finds that Planning Plays a Key Role in Successful Upgrades\" (https://www.symantec.com/connect/blogs/results-are-windows-7-migration-survey-finds-planning-plays-key-role-successful-upgrades). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#symantec-2010-10-more-than-80pct-said-planning-helped-migration." }, { "id": "idc-dell-2021-03-server-operating-cost-rises-199pct-in-years-4-to-6", "family": "migration-effort-cost", "statement": "$22,511 a year per server was the operating cost enterprises expected in years four to six of a server's life, up 199% from $7,541 in years one to three, in IDC's survey of 425 enterprises for Dell and Intel (IDC for Dell and Intel, 2021).", "short_statement": "A server costs **$22,511** a year to run in years four to six, up 199%, in a vendor-sponsored survey (IDC for Dell and Intel, 2021).", "short_refs": null, "value": 22511, "unit": "USD expected annual operating cost per server in years 4-6 (enterprise respondents' average)", "display_value": "$22,511 (from $7,541)", "display_label": "IDC survey of 425 enterprises for Dell and Intel, 2021", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated (USD values)", "period": "2020", "population": "Enterprise respondents (organisations with more than 500 employees, n = 425) to IDC's web survey of 707 IT practitioners and decision-makers for Dell and Intel ('Dell EMC Server Upgrade 2020 Research'); a Dell brochure says respondents used Dell server solutions across seven industries", "sample_n": 425, "publisher": "IDC (sponsored by Dell Technologies and Intel)", "source_title": "Optimizing Performance with Frequent Server Replacements for Enterprises (IDC white paper #US47489021, March 2021, sponsored by Dell Technologies and Intel)", "source_url": "https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/server-infrastructure-resiliency-enterprise-whitepaper.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2021-03-01", "accessed_at": "2026-10-14", "quote": "an average annual operating cost of $7,541 per server immediately following a server replacement (years 1–3). As the server ages, respondents predicted that operational costs would reach a high of $22,511 (up 199%) during years 4–6.", "locator": "Wayback snapshot https://web.archive.org/web/20211009074623/https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/server-infrastructure-resiliency-enterprise-whitepaper.pdf; page 6, 'Financial Costs of Delayed Server Replacements'", "derived": false, "formula": null, "headline": true, "series": "", "history": [ { "period": "years 1-3", "value": 7541 } ], "notes": "Vendor-sponsored: commissioned by Dell Technologies and Intel, which sell servers and processors; respondents were Dell server customers per Dell's own brochure ('5 key benefits of timely server upgrades', saved as raw/migration-effort-cost/dell-brochure-timely-server-upgrades-2021.pdf). The live Dell URL returned HTTP 500 on 2026-10-14, so the Wayback copy of 9 October 2021 was fetched (raw/migration-effort-cost/wayback-idc-dell-2021-frequent-server-replacements.pdf). Survey geography not stated; all values in USD. Respondents' expectations, not audited costs. The same paper's model gives much larger per-server figures ($47,551 a year on a three-year cycle against $61,206 on a six-plus-year cycle), so the two sets measure different cost scopes and should not be mixed. March 2021 has no day, so published_at uses the 1st.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-dell-2021-03-server-operating-cost-rises-199pct-in-years-4-to-6", "citation_text": "$22,511 a year per server was the operating cost enterprises expected in years four to six of a server's life, up 199% from $7,541 in years one to three, in IDC's survey of 425 enterprises for Dell and Intel (IDC for Dell and Intel, 2021). Source: IDC (sponsored by Dell Technologies and Intel), \"Optimizing Performance with Frequent Server Replacements for Enterprises (IDC white paper #US47489021, March 2021, sponsored by Dell Technologies and Intel)\" (https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/server-infrastructure-resiliency-enterprise-whitepaper.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-dell-2021-03-server-operating-cost-rises-199pct-in-years-4-to-6." }, { "id": "idc-dell-2021-03-53pct-of-enterprises-replace-servers-every-5-years-or-more", "family": "migration-effort-cost", "statement": "53% of enterprises replaced their servers only every five years or more, in IDC's 2020 survey of 425 organisations with more than 500 employees for Dell and Intel (IDC for Dell and Intel, 2021).", "short_statement": null, "short_refs": null, "value": 53, "unit": "% of enterprise respondents with server replacement cadences of five years or more", "display_value": "53%", "display_label": "", "display_hook": null, "row_label": "IDC for Dell and Intel, 2020: replacing every five years or more", "publisher_short": null, "geography": "Not stated (USD values)", "period": "2020", "population": "Enterprise respondents (organisations with more than 500 employees, n = 425) to IDC's web survey of 707 IT practitioners and decision-makers for Dell and Intel ('Dell EMC Server Upgrade 2020 Research'); a Dell brochure says respondents used Dell server solutions across seven industries", "sample_n": 425, "publisher": "IDC (sponsored by Dell Technologies and Intel)", "source_title": "Optimizing Performance with Frequent Server Replacements for Enterprises (IDC white paper #US47489021, March 2021, sponsored by Dell Technologies and Intel)", "source_url": "https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/server-infrastructure-resiliency-enterprise-whitepaper.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2021-03-01", "accessed_at": "2026-10-14", "quote": "more than half (53%) of enterprise survey respondents reporting long replacement cadences of five or more years", "locator": "Wayback snapshot https://web.archive.org/web/20211009074623/https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/server-infrastructure-resiliency-enterprise-whitepaper.pdf; page 5, 'Financial Costs of Delayed Server Replacements'; Figure 1 'Enterprise Server Replacement Rates'", "derived": false, "formula": null, "headline": false, "series": "server-refresh-cycle-surveys", "history": [], "notes": "Vendor-sponsored: commissioned by Dell Technologies and Intel, which sell servers and processors; respondents were Dell server customers per Dell's own brochure ('5 key benefits of timely server upgrades', saved as raw/migration-effort-cost/dell-brochure-timely-server-upgrades-2021.pdf). The live Dell URL returned HTTP 500 on 2026-10-14, so the Wayback copy of 9 October 2021 was fetched (raw/migration-effort-cost/wayback-idc-dell-2021-frequent-server-replacements.pdf). Survey geography not stated; all values in USD. Figure 1 values extracted as 6%, 14%, 27%, 40%, 13% for less than 3 years, every 3, 4, 5 and 6+ years; 40% + 13% = 53% matches the text. Compare IDC's 2025 survey for the same sponsors, where only 29% refreshed every four to five years or longer.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-dell-2021-03-53pct-of-enterprises-replace-servers-every-5-years-or-more", "citation_text": "53% of enterprises replaced their servers only every five years or more, in IDC's 2020 survey of 425 organisations with more than 500 employees for Dell and Intel (IDC for Dell and Intel, 2021). Source: IDC (sponsored by Dell Technologies and Intel), \"Optimizing Performance with Frequent Server Replacements for Enterprises (IDC white paper #US47489021, March 2021, sponsored by Dell Technologies and Intel)\" (https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/server-infrastructure-resiliency-enterprise-whitepaper.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-dell-2021-03-53pct-of-enterprises-replace-servers-every-5-years-or-more." }, { "id": "idc-dell-2021-03-162pct-more-unplanned-downtime-waiting-until-year-6", "family": "migration-effort-cost", "statement": "162% more unplanned downtime was reported by the average enterprise that waited until a server's sixth year to replace it, in IDC's 2020 survey of 425 enterprises for Dell and Intel (IDC for Dell and Intel, 2021).", "short_statement": "Enterprises that waited until a server's sixth year reported **162%** more unplanned downtime.", "short_refs": null, "value": 162, "unit": "% more unplanned downtime (six-year versus three-year replacement cycle)", "display_value": "162% more", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated (USD values)", "period": "2020", "population": "Enterprise respondents (organisations with more than 500 employees, n = 425) to IDC's web survey of 707 IT practitioners and decision-makers for Dell and Intel ('Dell EMC Server Upgrade 2020 Research'); a Dell brochure says respondents used Dell server solutions across seven industries", "sample_n": 425, "publisher": "IDC (sponsored by Dell Technologies and Intel)", "source_title": "Optimizing Performance with Frequent Server Replacements for Enterprises (IDC white paper #US47489021, March 2021, sponsored by Dell Technologies and Intel)", "source_url": "https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/server-infrastructure-resiliency-enterprise-whitepaper.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2021-03-01", "accessed_at": "2026-10-14", "quote": "IDC found that the average enterprise organization reports 162% more unplanned downtime if it waits until year 6 to upgrade.", "locator": "Wayback snapshot https://web.archive.org/web/20211009074623/https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/server-infrastructure-resiliency-enterprise-whitepaper.pdf; page 11, 'Impact on Operating Costs'; Figure 6 'Business Value Snapshot of Server Replacements'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor-sponsored: commissioned by Dell Technologies and Intel, which sell servers and processors; respondents were Dell server customers per Dell's own brochure ('5 key benefits of timely server upgrades', saved as raw/migration-effort-cost/dell-brochure-timely-server-upgrades-2021.pdf). The live Dell URL returned HTTP 500 on 2026-10-14, so the Wayback copy of 9 October 2021 was fetched (raw/migration-effort-cost/wayback-idc-dell-2021-frequent-server-replacements.pdf). Survey geography not stated; all values in USD. Server-age-specific downtime figure; general hourly downtime costs (ITIC, Uptime, Ponemon) live on the data-migration-failure-rate page. The same section says 16% of server downtime incidents cost up to $250,000 in revenue each.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-dell-2021-03-162pct-more-unplanned-downtime-waiting-until-year-6", "citation_text": "162% more unplanned downtime was reported by the average enterprise that waited until a server's sixth year to replace it, in IDC's 2020 survey of 425 enterprises for Dell and Intel (IDC for Dell and Intel, 2021). Source: IDC (sponsored by Dell Technologies and Intel), \"Optimizing Performance with Frequent Server Replacements for Enterprises (IDC white paper #US47489021, March 2021, sponsored by Dell Technologies and Intel)\" (https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/server-infrastructure-resiliency-enterprise-whitepaper.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-dell-2021-03-162pct-more-unplanned-downtime-waiting-until-year-6." }, { "id": "idc-dell-2021-03-three-year-server-cycle-cuts-tco-22pct-vs-six-year", "family": "migration-effort-cost", "statement": "22% lower total cost of ownership for server operations comes from a three-year rather than a six-year replacement cycle, in IDC's model of a 1,000-employee company running 200 applications on 27 servers, for Dell and Intel (IDC for Dell and Intel, 2021).", "short_statement": "A three-year replacement cycle cut the cost of running servers by **22%** against a six-year one, in IDC's model.", "short_refs": null, "value": 22, "unit": "% lower server TCO, three-year versus six-year replacement cycle (IDC model)", "display_value": "22%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated (USD values)", "period": "2021", "population": "IDC's modelled company: 1,000 employees, 200 business applications, 27 servers (inputs from the survey of 425 enterprises)", "sample_n": null, "publisher": "IDC (sponsored by Dell Technologies and Intel)", "source_title": "Optimizing Performance with Frequent Server Replacements for Enterprises (IDC white paper #US47489021, March 2021, sponsored by Dell Technologies and Intel)", "source_url": "https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/server-infrastructure-resiliency-enterprise-whitepaper.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2021-03-01", "accessed_at": "2026-10-14", "quote": "a company with 1,000 employees that runs 200 business applications on 27 servers will reduce its total cost of ownership for server operations by 22% for a three-year replacement cycle compared with a six-year replacement cycle.", "locator": "Wayback snapshot https://web.archive.org/web/20211009074623/https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/server-infrastructure-resiliency-enterprise-whitepaper.pdf; page 11, 'The Calculated Value of Timely Server Upgrades'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor-sponsored: commissioned by Dell Technologies and Intel, which sell servers and processors; respondents were Dell server customers per Dell's own brochure ('5 key benefits of timely server upgrades', saved as raw/migration-effort-cost/dell-brochure-timely-server-upgrades-2021.pdf). The live Dell URL returned HTTP 500 on 2026-10-14, so the Wayback copy of 9 October 2021 was fetched (raw/migration-effort-cost/wayback-idc-dell-2021-frequent-server-replacements.pdf). Survey geography not stated; all values in USD. Modelled, not observed. Annual per-server operating cost in the model: $47,551 on a three-year cycle against $61,206 on a six-plus-year cycle. IDC calls four years or less the current 'optimum period'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-dell-2021-03-three-year-server-cycle-cuts-tco-22pct-vs-six-year", "citation_text": "22% lower total cost of ownership for server operations comes from a three-year rather than a six-year replacement cycle, in IDC's model of a 1,000-employee company running 200 applications on 27 servers, for Dell and Intel (IDC for Dell and Intel, 2021). Source: IDC (sponsored by Dell Technologies and Intel), \"Optimizing Performance with Frequent Server Replacements for Enterprises (IDC white paper #US47489021, March 2021, sponsored by Dell Technologies and Intel)\" (https://www.delltechnologies.com/asset/en-us/products/servers/industry-market/server-infrastructure-resiliency-enterprise-whitepaper.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-dell-2021-03-three-year-server-cycle-cuts-tco-22pct-vs-six-year." }, { "id": "forrester-2025-04-tei-azure-arc-esu-fees-30pct-lower", "family": "migration-effort-cost", "statement": "30% lower Extended Security Update fees per server, on an assumed $480 per server, was Forrester's modelled saving for a composite enterprise with 1,000 Windows Servers buying ESU through Azure Arc instead of multi-vendor procurement, in an April 2025 study commissioned by Microsoft (Forrester for Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 30, "unit": "% saving on ESU fees per server (composite organisation, Forrester TEI model)", "display_value": "30%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Global (four interviewed organisations)", "period": "2025-04", "population": "Composite organisation with $40 billion revenue and 4,000 IT assets including 1,000 Windows Servers and 250 SQL Servers, modelled by Forrester Consulting from four interviewed decision-makers", "sample_n": 4, "publisher": "Forrester Consulting (commissioned by Microsoft)", "source_title": "The Total Economic Impact Of Microsoft Azure Arc With Cloud-Based Management Services (Forrester Consulting, commissioned by Microsoft, April 2025)", "source_url": "https://tei.forrester.com/go/microsoft/azurearc/", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-04-01", "accessed_at": "2026-10-14", "quote": "On-premises Windows Server and SQL Server pay-as-you-go saves 10% on licensing and extended security updates fees are reduced by 30%.", "locator": "Executive Summary, Key findings; benefit table C9-C10 ('ESU cost per server $480', 'Server ESU cost savings per server 30%')", "derived": false, "formula": null, "headline": false, "series": "forrester-tei-windows-server-upgrade", "history": [], "notes": "Manufacturer-commissioned TEI (Microsoft paid; Forrester Consulting delivered); four interviews modelled as one composite, not a survey. Fetched 2026-10-14 (raw/migration-effort-cost/tei-azure-arc.html). April 2025 has no day, so published_at uses the 1st. The saving comes from contracting ESU directly with Microsoft through Arc rather than through several resellers in several countries ('eliminating third-party vendor markups'); it is not a cut in Microsoft's ESU list price. ESU price rules are recorded by the lifecycle-dates-esu family.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#forrester-2025-04-tei-azure-arc-esu-fees-30pct-lower", "citation_text": "30% lower Extended Security Update fees per server, on an assumed $480 per server, was Forrester's modelled saving for a composite enterprise with 1,000 Windows Servers buying ESU through Azure Arc instead of multi-vendor procurement, in an April 2025 study commissioned by Microsoft (Forrester for Microsoft, 2025). Source: Forrester Consulting (commissioned by Microsoft), \"The Total Economic Impact Of Microsoft Azure Arc With Cloud-Based Management Services (Forrester Consulting, commissioned by Microsoft, April 2025)\" (https://tei.forrester.com/go/microsoft/azurearc/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#forrester-2025-04-tei-azure-arc-esu-fees-30pct-lower." }, { "id": "forrester-2025-04-tei-azure-arc-roi-304pct", "family": "migration-effort-cost", "statement": "304% three-year ROI, with payback in under six months, was Forrester's modelled result for a composite enterprise managing 1,000 Windows Servers and other assets with Azure Arc, in an April 2025 study commissioned by Microsoft from four interviews (Forrester for Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 304, "unit": "% three-year risk-adjusted ROI (composite organisation, Forrester TEI model)", "display_value": "304%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Global (four interviewed organisations)", "period": "2025-04", "population": "Composite organisation with $40 billion revenue and 4,000 IT assets including 1,000 Windows Servers and 250 SQL Servers, modelled by Forrester Consulting from four interviewed decision-makers", "sample_n": 4, "publisher": "Forrester Consulting (commissioned by Microsoft)", "source_title": "The Total Economic Impact Of Microsoft Azure Arc With Cloud-Based Management Services (Forrester Consulting, commissioned by Microsoft, April 2025)", "source_url": "https://tei.forrester.com/go/microsoft/azurearc/", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-04-01", "accessed_at": "2026-10-14", "quote": "experiences benefits of $2.3 million over three years versus costs of $562,000, adding up to a net present value (NPV) of $1.7 million and an ROI of 304%.", "locator": "Executive Summary, closing paragraph; Key Statistics (ROI 304%, payback <6 months)", "derived": false, "formula": null, "headline": false, "series": "forrester-tei-windows-server-upgrade", "history": [], "notes": "Manufacturer-commissioned TEI (Microsoft paid; Forrester Consulting delivered); four interviews modelled as one composite, not a survey. Fetched 2026-10-14 (raw/migration-effort-cost/tei-azure-arc.html). April 2025 has no day, so published_at uses the 1st. Azure Arc itself is free; costs are Azure management and security services plus training. An interviewee is quoted: 'Azure Arc saves us approximately 75% of the time for updates and rollouts for our many on-premises Windows Servers.'", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#forrester-2025-04-tei-azure-arc-roi-304pct", "citation_text": "304% three-year ROI, with payback in under six months, was Forrester's modelled result for a composite enterprise managing 1,000 Windows Servers and other assets with Azure Arc, in an April 2025 study commissioned by Microsoft from four interviews (Forrester for Microsoft, 2025). Source: Forrester Consulting (commissioned by Microsoft), \"The Total Economic Impact Of Microsoft Azure Arc With Cloud-Based Management Services (Forrester Consulting, commissioned by Microsoft, April 2025)\" (https://tei.forrester.com/go/microsoft/azurearc/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#forrester-2025-04-tei-azure-arc-roi-304pct." }, { "id": "forrester-2017-06-tei-azure-iaas-roi-435pct-five-years", "family": "migration-effort-cost", "statement": "435% ROI over five years, a $22.4 million net present value, was Forrester's modelled result for moving infrastructure to Azure IaaS, in a June 2017 study commissioned by Microsoft from six customer interviews, as abridged by a Microsoft partner (Forrester for Microsoft, 2017).", "short_statement": null, "short_refs": null, "value": 435, "unit": "% five-year ROI (composite organisation, Forrester TEI model)", "display_value": "435%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated (six interviewed customers)", "period": "2017-06", "population": "Composite organisation modelled by Forrester Consulting from six Microsoft Azure IaaS customer interviews", "sample_n": 6, "publisher": "Professional Advantage (Microsoft partner, abridging a Forrester Consulting TEI study commissioned by Microsoft)", "source_title": "The Total Economic Impact of Microsoft Azure IaaS (abridged one-page version by Professional Advantage of Forrester's June 2017 study)", "source_url": "https://www.pa.com.au/media/2295926/azure-the-total-economic-impact-of-microsoft-azure-iaas.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2017-06-01", "accessed_at": "2026-10-14", "quote": "NPV $22.4M TOTAL BENEFITS $27.6M ROI 435%", "locator": "Wayback snapshot https://web.archive.org/web/20240408121519/https://www.pa.com.au/media/2295926/azure-the-total-economic-impact-of-microsoft-azure-iaas.pdf; 'Financial summary (5-years)' panel", "derived": false, "formula": null, "headline": false, "series": "forrester-tei-windows-server-upgrade", "history": [], "notes": "Manufacturer-commissioned TEI. The page says: 'This document is an abridged version of a case study commissioned by Microsoft titled: The Total Economic Impact Of Microsoft Azure IaaS, June 2017.' The live pa.com.au URL now returns an HTML page (two failed fetches saved as raw/migration-effort-cost/forrester-tei-azure-iaas-2017-summary.pdf), so the Wayback copy was used (wayback-forrester-tei-azure-iaas-2017.pdf). Forrester's full study and Microsoft's 2019 deck (query.prod.cms.rt.microsoft.com/cms/api/am/binary/RWCFmK, 'not found') were not retrievable; a search summary of that deck cites 478% ROI for an August 2019 IaaS study, unverified. Benefit labels (73%, 83%, 63%, 27%) cannot be matched to their captions from the extracted text, so they are not recorded.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#forrester-2017-06-tei-azure-iaas-roi-435pct-five-years", "citation_text": "435% ROI over five years, a $22.4 million net present value, was Forrester's modelled result for moving infrastructure to Azure IaaS, in a June 2017 study commissioned by Microsoft from six customer interviews, as abridged by a Microsoft partner (Forrester for Microsoft, 2017). Source: Professional Advantage (Microsoft partner, abridging a Forrester Consulting TEI study commissioned by Microsoft), \"The Total Economic Impact of Microsoft Azure IaaS (abridged one-page version by Professional Advantage of Forrester's June 2017 study)\" (https://www.pa.com.au/media/2295926/azure-the-total-economic-impact-of-microsoft-azure-iaas.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#forrester-2017-06-tei-azure-iaas-roi-435pct-five-years." }, { "id": "microsoft-2024-04-25-restates-idc-azure-windows-sql-migration-15-85m-annual-benefits", "family": "migration-effort-cost", "statement": "$15.85 million in total annual benefits was what companies that moved Windows Server and SQL Server workloads to Azure gained, by Microsoft's 2024 summary of a September 2022 IDC study it commissioned (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 15850000, "unit": "USD total annual benefits (IDC study, as summarised by Microsoft; per-organisation basis not stated)", "display_value": "$15.85 million", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Not stated", "period": "2022-09", "population": "Organisations interviewed by IDC for 'The Business Value of Microsoft Azure for SQL Server and Windows Server Workloads' (IDC #US49616022, September 2022, commissioned by Microsoft); sample not stated in the blog", "sample_n": null, "publisher": "Microsoft (SQL Server Blog, summarising a Microsoft-commissioned IDC study)", "source_title": "Why migrate Windows Server and SQL Server to Azure: ROI, innovation, and free offers (Microsoft SQL Server Blog, 25 April 2024)", "source_url": "https://www.microsoft.com/en-us/sql-server/blog/2024/04/25/why-migrate-windows-server-and-sql-server-to-azure-roi-innovation-and-free-offers/", "source_type": "manufacturer", "source_access": "open", "published_at": "2024-04-25", "accessed_at": "2026-10-14", "quote": "by optimizing costs, operations, and business opportunities, companies gained $15.85 million in total annual benefits while also increasing IT security efficiency by 43 percent with cloud tools and automation.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement of a manufacturer-commissioned IDC paper; the IDC PDF is form-gated (Microsoft's resource page now redirects to microsoft.com/en/ai) and was not retrieved, so whether $15.85 million is per organisation or across all interviewees is unconfirmed. Search summaries describe eight interviewed enterprises. The same blog cites a separate IDC study of Azure SQL with 'up to 406 percent return on investment over 3 years'. Fetched 2026-10-14 (raw/migration-effort-cost/ms-sqlblog-2024-04-25-why-migrate.html).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2024-04-25-restates-idc-azure-windows-sql-migration-15-85m-annual-benefits", "citation_text": "$15.85 million in total annual benefits was what companies that moved Windows Server and SQL Server workloads to Azure gained, by Microsoft's 2024 summary of a September 2022 IDC study it commissioned (Microsoft, 2024). Source: Microsoft (SQL Server Blog, summarising a Microsoft-commissioned IDC study), \"Why migrate Windows Server and SQL Server to Azure: ROI, innovation, and free offers (Microsoft SQL Server Blog, 25 April 2024)\" (https://www.microsoft.com/en-us/sql-server/blog/2024/04/25/why-migrate-windows-server-and-sql-server-to-azure-roi-innovation-and-free-offers/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2024-04-25-restates-idc-azure-windows-sql-migration-15-85m-annual-benefits." }, { "id": "microsoft-2005-11-15-nobody-upgrades-their-server-in-place", "family": "migration-effort-cost", "statement": "Effectively no server installs were in-place upgrades in Microsoft's own customer research, Microsoft engineer Raymond Chen wrote in November 2005: administrators 'always do a clean install' and reinstall their applications (Microsoft, 2005).", "short_statement": null, "short_refs": null, "value": 0, "unit": "share of server installs done as in-place upgrades ('to within experimental error', Microsoft research as described)", "display_value": "About 0%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2005-11", "population": "Microsoft's internal research on how customers install Windows servers (unpublished; described by a Microsoft engineer)", "sample_n": null, "publisher": "Microsoft (The Old New Thing, Raymond Chen)", "source_title": "In real life, nobody upgrades their server (The Old New Thing, Microsoft DevBlogs, 15 November 2005)", "source_url": "https://devblogs.microsoft.com/oldnewthing/20051115-13/?p=33333", "source_type": "manufacturer", "source_access": "open", "published_at": "2005-11-15", "accessed_at": "2026-10-14", "quote": "our research says that, to within experimental error, nobody does an “upgrade install”. They always do a “clean install” and reinstall any applications that they need.", "locator": "Third paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Historical comparator for the in-place-versus-migration question: twenty years later Microsoft promotes in-place upgrades to Windows Server 2025 in 'under an hour' and through Windows Update. The research itself was never published, so the figure is Microsoft's characterisation. No independent survey of in-place upgrade versus migration choices for Windows Server was found. Fetched 2026-10-14 (raw/migration-effort-cost/oldnewthing-nobody-upgrades-server.html).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2005-11-15-nobody-upgrades-their-server-in-place", "citation_text": "Effectively no server installs were in-place upgrades in Microsoft's own customer research, Microsoft engineer Raymond Chen wrote in November 2005: administrators 'always do a clean install' and reinstall their applications (Microsoft, 2005). Source: Microsoft (The Old New Thing, Raymond Chen), \"In real life, nobody upgrades their server (The Old New Thing, Microsoft DevBlogs, 15 November 2005)\" (https://devblogs.microsoft.com/oldnewthing/20051115-13/?p=33333). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2005-11-15-nobody-upgrades-their-server-in-place." }, { "id": "microsoft-2025-02-azure-migrate-assess-up-to-35000-servers-per-project", "family": "migration-effort-cost", "statement": "35,000 servers is the most a single Azure Migrate project can discover and assess for migration to Azure, per Microsoft's planning limits updated February 2025 (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 35000, "unit": "servers per Azure Migrate project (planning limit)", "display_value": "35,000 servers", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-02", "population": "Microsoft's documented Azure Migrate planning limits (documentation)", "sample_n": null, "publisher": "Microsoft", "source_title": "Assess large numbers of physical servers for migration to Azure (Microsoft Learn, ms.date 2025-02-06)", "source_url": "https://learn.microsoft.com/en-us/azure/migrate/scale-physical-assessment", "source_type": "primary", "source_access": "open", "published_at": "2025-02-06", "accessed_at": "2026-10-14", "quote": "Assess up to 35,000 servers in a project.", "locator": "Section 'Planning limits', table", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Primary documentation (raw/migration-effort-cost/ms-azure-migrate-scale-physical.html). A capacity limit, not a usage statistic: Microsoft publishes no count of servers assessed or migrated with Azure Migrate (none found). One appliance discovers up to 1,000 physical servers.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-02-azure-migrate-assess-up-to-35000-servers-per-project", "citation_text": "35,000 servers is the most a single Azure Migrate project can discover and assess for migration to Azure, per Microsoft's planning limits updated February 2025 (Microsoft, 2025). Source: Microsoft, \"Assess large numbers of physical servers for migration to Azure (Microsoft Learn, ms.date 2025-02-06)\" (https://learn.microsoft.com/en-us/azure/migrate/scale-physical-assessment). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-02-azure-migrate-assess-up-to-35000-servers-per-project." }, { "id": "microsoft-fy24-q4-earnings-2024-07-30-azure-arc-customers-36000-up-90pct", "family": "next-versions-adoption", "statement": "36,000 customers used Azure Arc by June 2024, up 90% year over year, as Microsoft reported on its fiscal 2024 fourth-quarter earnings call (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 36000, "unit": "Azure Arc customers", "display_value": "36,000", "display_label": "Microsoft FY24 Q4 earnings call, 30 July 2024", "display_hook": null, "row_label": "June 2024", "publisher_short": null, "geography": "Worldwide", "period": "2024-06", "population": "Organisations using Azure Arc (Microsoft's hybrid management service for non-Azure servers)", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY24 Fourth Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY24Q4.docx", "source_type": "primary", "source_access": "open", "published_at": "2024-07-30", "accessed_at": "2026-10-14", "quote": "We now have 36,000 Arc customers, up 90% year-over-year.", "locator": "Satya Nadella's prepared remarks, Azure paragraph (page 2 of the transcript)", "derived": false, "formula": null, "headline": false, "series": "microsoft-azure-arc-customers", "history": [], "notes": "Transcript .docx published on Microsoft's investor site (microsoft.com/en-us/investor/events) via the aka.ms/transcriptFYxxQx short link; saved as raw/next-versions-adoption/ms-transcript-fy24q4.docx and .txt. Overlap: the on-premises-and-cloud-share family also covers Microsoft earnings statements on server products; dedupe at merge.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy24-q4-earnings-2024-07-30-azure-arc-customers-36000-up-90pct", "citation_text": "36,000 customers used Azure Arc by June 2024, up 90% year over year, as Microsoft reported on its fiscal 2024 fourth-quarter earnings call (Microsoft, 2024). Source: Microsoft, \"Microsoft FY24 Fourth Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY24Q4.docx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy24-q4-earnings-2024-07-30-azure-arc-customers-36000-up-90pct." }, { "id": "microsoft-fy25-q1-earnings-2024-10-30-azure-arc-customers-39000-up-80pct", "family": "next-versions-adoption", "statement": "39,000+ customers used Azure Arc by September 2024, up more than 80% year over year, the last Arc customer count Microsoft gave on an earnings call as of October 2026 (Microsoft, 2024).", "short_statement": "Azure Arc, the route to paid updates, had **39,000** customers in September 2024, the last count Microsoft gave.", "short_refs": null, "value": 39000, "unit": "Azure Arc customers", "display_value": "39,000+", "display_label": "Microsoft FY25 Q1 earnings call, 30 October 2024", "display_hook": null, "row_label": "September 2024", "publisher_short": null, "geography": "Worldwide", "period": "2024-09", "population": "Organisations using Azure Arc", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY25 First Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY25Q1", "source_type": "primary", "source_access": "open", "published_at": "2024-10-30", "accessed_at": "2026-10-14", "quote": "Azure Arc now has over 39,000 customers across every industry, including American Tower, CTT, L'Oreal, up more than 80% year-over-year.", "locator": "Satya Nadella's prepared remarks, Azure paragraph", "derived": false, "formula": null, "headline": false, "series": "microsoft-azure-arc-customers", "history": [], "notes": "Transcript .docx published on Microsoft's investor site (microsoft.com/en-us/investor/events) via the aka.ms/transcriptFYxxQx short link; saved as raw/next-versions-adoption/ms-transcript-fy25q1.docx and .txt. Overlap: the on-premises-and-cloud-share family also covers Microsoft earnings statements on server products; dedupe at merge.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q1-earnings-2024-10-30-azure-arc-customers-39000-up-80pct", "citation_text": "39,000+ customers used Azure Arc by September 2024, up more than 80% year over year, the last Arc customer count Microsoft gave on an earnings call as of October 2026 (Microsoft, 2024). Source: Microsoft, \"Microsoft FY25 First Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY25Q1). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q1-earnings-2024-10-30-azure-arc-customers-39000-up-80pct." }, { "id": "microsoft-earnings-2025-01-to-2026-07-no-azure-arc-customer-count-disclosed", "family": "next-versions-adoption", "statement": "0 Azure Arc customer counts were given in Microsoft's seven earnings-call transcripts from January 2025 to July 2026, so the 39,000 given in October 2024, for September 2024, remains the latest published figure (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 0, "unit": "Azure Arc customer counts disclosed in the FY25 Q2 to FY26 Q4 transcripts", "display_value": "0 updates since October 2024", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-01-29 to 2026-07-29", "population": "Microsoft earnings-call transcripts", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY26 Fourth Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY26Q4.docx", "source_type": "primary", "source_access": "open", "published_at": "2026-07-29", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue was relatively unchanged year-over-year and was down 1% in constant currency.", "locator": "FY26 Q4 transcript, Amy Hood's Intelligent Cloud remarks; a search of the transcript finds no 'Azure Arc' mention", "derived": true, "formula": "case-insensitive search for 'Arc' in the FY25 Q2, FY25 Q3, FY25 Q4, FY26 Q1, FY26 Q2, FY26 Q3 and FY26 Q4 transcripts saved in raw/next-versions-adoption/ (ms-transcript-*.txt); the only match is 'arc of time' in FY26 Q1", "headline": false, "series": "", "history": [], "notes": "Summary record: the absence of a figure is the finding. The seven transcripts are saved in raw/next-versions-adoption/. Microsoft's Ignite 2025 adaptive-cloud guide (techcommunity 4466712, saved) also gives no count.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-earnings-2025-01-to-2026-07-no-azure-arc-customer-count-disclosed", "citation_text": "0 Azure Arc customer counts were given in Microsoft's seven earnings-call transcripts from January 2025 to July 2026, so the 39,000 given in October 2024, for September 2024, remains the latest published figure (Microsoft, 2026). Source: Microsoft, \"Microsoft FY26 Fourth Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY26Q4.docx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-earnings-2025-01-to-2026-07-no-azure-arc-customer-count-disclosed." }, { "id": "microsoft-fy24-q4-earnings-2024-07-30-on-premises-server-revenue-up-2pct-hybrid-demand", "family": "next-versions-adoption", "statement": "2% higher revenue year over year in Microsoft's on-premises server business for April to June 2024, driven by demand for hybrid solutions with slightly lower-than-expected transactional purchasing (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 2, "unit": "% year-over-year change in Microsoft on-premises server business revenue (as reported)", "display_value": "+2%", "display_label": "", "display_hook": null, "row_label": "April to June 2024 (FY24 Q4)", "publisher_short": null, "geography": "Worldwide", "period": "2024-Q2 (April to June 2024, Microsoft FY24 Q4)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY24 Fourth Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY24Q4.docx", "source_type": "primary", "source_access": "open", "published_at": "2024-07-30", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue increased 2% and 3% in constant currency. Growth was driven by demand for our hybrid solutions although with slightly lower-than-expected transactional purchasing.", "locator": "Amy Hood's prepared remarks, Intelligent Cloud segment", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Transcript .docx published on Microsoft's investor site (microsoft.com/en-us/investor/events) via the aka.ms/transcriptFYxxQx short link; saved as raw/next-versions-adoption/ms-transcript-fy24q4.docx and .txt. Overlap: the on-premises-and-cloud-share family also covers Microsoft earnings statements on server products; dedupe at merge.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy24-q4-earnings-2024-07-30-on-premises-server-revenue-up-2pct-hybrid-demand", "citation_text": "2% higher revenue year over year in Microsoft's on-premises server business for April to June 2024, driven by demand for hybrid solutions with slightly lower-than-expected transactional purchasing (Microsoft, 2024). Source: Microsoft, \"Microsoft FY24 Fourth Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY24Q4.docx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy24-q4-earnings-2024-07-30-on-premises-server-revenue-up-2pct-hybrid-demand." }, { "id": "microsoft-fy25-q1-earnings-2024-10-30-on-premises-server-revenue-down-1pct-ahead-of-windows-server-2025-launch", "family": "next-versions-adoption", "statement": "1% lower revenue year over year in Microsoft's on-premises server business for July to September 2024, with lower-than-expected transactional purchasing ahead of the Windows Server 2025 launch (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": -1, "unit": "% year-over-year change in Microsoft on-premises server business revenue (as reported)", "display_value": "-1%", "display_label": "Microsoft FY25 Q1 earnings call, 30 October 2024", "display_hook": null, "row_label": "July to September 2024 (FY25 Q1)", "publisher_short": null, "geography": "Worldwide", "period": "2024-Q3 (July to September 2024, Microsoft FY25 Q1)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY25 First Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY25Q1", "source_type": "primary", "source_access": "open", "published_at": "2024-10-30", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue decreased 1%. Lower-than-expected transactional purchasing ahead of the Windows Server 2025 launch, as well as lower purchasing of licenses running in multi-cloud environments, was mostly offset", "locator": "Amy Hood's prepared remarks, Intelligent Cloud segment", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Transcript .docx published on Microsoft's investor site (microsoft.com/en-us/investor/events) via the aka.ms/transcriptFYxxQx short link; saved as raw/next-versions-adoption/ms-transcript-fy25q1.docx and .txt. Overlap: the on-premises-and-cloud-share family also covers Microsoft earnings statements on server products; dedupe at merge.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q1-earnings-2024-10-30-on-premises-server-revenue-down-1pct-ahead-of-windows-server-2025-launch", "citation_text": "1% lower revenue year over year in Microsoft's on-premises server business for July to September 2024, with lower-than-expected transactional purchasing ahead of the Windows Server 2025 launch (Microsoft, 2024). Source: Microsoft, \"Microsoft FY25 First Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY25Q1). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q1-earnings-2024-10-30-on-premises-server-revenue-down-1pct-ahead-of-windows-server-2025-launch." }, { "id": "microsoft-fy25-q2-earnings-2025-01-29-on-premises-server-revenue-down-3pct-slower-windows-server-2025-purchasing", "family": "next-versions-adoption", "statement": "3% lower revenue year over year in Microsoft's on-premises server business for October to December 2024, the launch quarter of Windows Server 2025, on slower-than-expected purchasing around the launch (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": -3, "unit": "% year-over-year change in Microsoft on-premises server business revenue (as reported)", "display_value": "-3%", "display_label": "Microsoft FY25 Q2 earnings call, 29 January 2025", "display_hook": null, "row_label": "October to December 2024 (FY25 Q2)", "publisher_short": null, "geography": "Worldwide", "period": "2024-Q4 (October to December 2024, Microsoft FY25 Q2)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY25 Second Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY25Q2.docx", "source_type": "primary", "source_access": "open", "published_at": "2025-01-29", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue decreased 3%, slightly below expectations driven by slower-than-expected purchasing around Windows Server 2025 launch.", "locator": "Amy Hood's prepared remarks, Intelligent Cloud segment", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Transcript .docx published on Microsoft's investor site (microsoft.com/en-us/investor/events) via the aka.ms/transcriptFYxxQx short link; saved as raw/next-versions-adoption/ms-transcript-fy25q2.docx and .txt. Overlap: the on-premises-and-cloud-share family also covers Microsoft earnings statements on server products; dedupe at merge.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q2-earnings-2025-01-29-on-premises-server-revenue-down-3pct-slower-windows-server-2025-purchasing", "citation_text": "3% lower revenue year over year in Microsoft's on-premises server business for October to December 2024, the launch quarter of Windows Server 2025, on slower-than-expected purchasing around the launch (Microsoft, 2025). Source: Microsoft, \"Microsoft FY25 Second Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY25Q2.docx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q2-earnings-2025-01-29-on-premises-server-revenue-down-3pct-slower-windows-server-2025-purchasing." }, { "id": "microsoft-fy25-q3-earnings-2025-04-30-on-premises-server-revenue-down-6pct-shift-to-cloud", "family": "next-versions-adoption", "statement": "6% lower revenue year over year in Microsoft's on-premises server business for January to March 2025, which Microsoft attributed to the continued customer shift to cloud offerings (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": -6, "unit": "% year-over-year change in Microsoft on-premises server business revenue (as reported)", "display_value": "-6%", "display_label": "", "display_hook": null, "row_label": "January to March 2025 (FY25 Q3)", "publisher_short": null, "geography": "Worldwide", "period": "2025-Q1 (January to March 2025, Microsoft FY25 Q3)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY25 Third Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY25Q3", "source_type": "primary", "source_access": "open", "published_at": "2025-04-30", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue decreased 6% and 4% in constant currency, slightly below expectations driven by renewals with lower in-period revenue recognition from the mix of contracts.", "locator": "Amy Hood's prepared remarks, Intelligent Cloud segment", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Transcript .docx published on Microsoft's investor site (microsoft.com/en-us/investor/events) via the aka.ms/transcriptFYxxQx short link; saved as raw/next-versions-adoption/ms-transcript-fy25q3.docx and .txt. Overlap: the on-premises-and-cloud-share family also covers Microsoft earnings statements on server products; dedupe at merge.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q3-earnings-2025-04-30-on-premises-server-revenue-down-6pct-shift-to-cloud", "citation_text": "6% lower revenue year over year in Microsoft's on-premises server business for January to March 2025, which Microsoft attributed to the continued customer shift to cloud offerings (Microsoft, 2025). Source: Microsoft, \"Microsoft FY25 Third Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY25Q3). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q3-earnings-2025-04-30-on-premises-server-revenue-down-6pct-shift-to-cloud." }, { "id": "microsoft-fy25-q4-earnings-2025-07-30-on-premises-server-revenue-down-2pct", "family": "next-versions-adoption", "statement": "2% lower revenue year over year in Microsoft's on-premises server business for April to June 2025, ahead of expectations on transactional purchasing (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": -2, "unit": "% year-over-year change in Microsoft on-premises server business revenue (as reported)", "display_value": "-2%", "display_label": "", "display_hook": null, "row_label": "April to June 2025 (FY25 Q4)", "publisher_short": null, "geography": "Worldwide", "period": "2025-Q2 (April to June 2025, Microsoft FY25 Q4)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY25 Fourth Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptQandAFY25q4.docx", "source_type": "primary", "source_access": "open", "published_at": "2025-07-30", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue decreased 2% and 3% in constant currency, ahead of expectations primarily driven by transactional purchasing which also has higher in-period revenue recognition.", "locator": "Amy Hood's prepared remarks, Intelligent Cloud segment", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Transcript .docx published on Microsoft's investor site (microsoft.com/en-us/investor/events) via the aka.ms/transcriptFYxxQx short link; saved as raw/next-versions-adoption/ms-transcript-fy25q4.docx and .txt. Overlap: the on-premises-and-cloud-share family also covers Microsoft earnings statements on server products; dedupe at merge.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q4-earnings-2025-07-30-on-premises-server-revenue-down-2pct", "citation_text": "2% lower revenue year over year in Microsoft's on-premises server business for April to June 2025, ahead of expectations on transactional purchasing (Microsoft, 2025). Source: Microsoft, \"Microsoft FY25 Fourth Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptQandAFY25q4.docx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q4-earnings-2025-07-30-on-premises-server-revenue-down-2pct." }, { "id": "microsoft-fy26-q1-earnings-2025-10-29-on-premises-server-revenue-up-1pct-windows-server-2025-transactional-purchasing", "family": "next-versions-adoption", "statement": "1% higher revenue year over year in Microsoft's on-premises server business for July to September 2025, ahead of expectations on transactional purchasing of Windows Server 2025 (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 1, "unit": "% year-over-year change in Microsoft on-premises server business revenue (as reported)", "display_value": "+1%", "display_label": "Microsoft FY26 Q1 earnings call, 29 October 2025", "display_hook": null, "row_label": "July to September 2025 (FY26 Q1)", "publisher_short": null, "geography": "Worldwide", "period": "2025-Q3 (July to September 2025, Microsoft FY26 Q1)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY26 First Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY26Q1.docx", "source_type": "primary", "source_access": "open", "published_at": "2025-10-29", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue increased 1% and was relatively unchanged in constant currency. Results were ahead of expectations driven by transactional purchasing of Windows Server 2025.", "locator": "Amy Hood's prepared remarks, Intelligent Cloud segment", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Transcript .docx published on Microsoft's investor site (microsoft.com/en-us/investor/events) via the aka.ms/transcriptFYxxQx short link; saved as raw/next-versions-adoption/ms-transcript-fy26q1.docx and .txt. Overlap: the on-premises-and-cloud-share family also covers Microsoft earnings statements on server products; dedupe at merge.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy26-q1-earnings-2025-10-29-on-premises-server-revenue-up-1pct-windows-server-2025-transactional-purchasing", "citation_text": "1% higher revenue year over year in Microsoft's on-premises server business for July to September 2025, ahead of expectations on transactional purchasing of Windows Server 2025 (Microsoft, 2025). Source: Microsoft, \"Microsoft FY26 First Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY26Q1.docx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy26-q1-earnings-2025-10-29-on-premises-server-revenue-up-1pct-windows-server-2025-transactional-purchasing." }, { "id": "microsoft-fy26-q2-earnings-2026-01-28-on-premises-server-revenue-up-2pct-sql-server-2025-launch", "family": "next-versions-adoption", "statement": "2% higher revenue year over year in Microsoft's on-premises server business for October to December 2025, helped by the SQL Server 2025 launch and purchasing ahead of memory price increases (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 2, "unit": "% year-over-year change in Microsoft on-premises server business revenue (as reported)", "display_value": "+2%", "display_label": "", "display_hook": null, "row_label": "October to December 2025 (FY26 Q2)", "publisher_short": null, "geography": "Worldwide", "period": "2025-Q4 (October to December 2025, Microsoft FY26 Q2)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY26 Second Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptQandAFY26q2", "source_type": "primary", "source_access": "open", "published_at": "2026-01-28", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue increased 2% and 1% in constant currency ahead of expectations driven by demand for our hybrid solutions, including a benefit from the launch of SQL server 2025, as well as higher transactional purchasing", "locator": "Amy Hood's prepared remarks, Intelligent Cloud segment", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Transcript .docx published on Microsoft's investor site (microsoft.com/en-us/investor/events) via the aka.ms/transcriptFYxxQx short link; saved as raw/next-versions-adoption/ms-transcript-fy26q2.docx and .txt. Overlap: the on-premises-and-cloud-share family also covers Microsoft earnings statements on server products; dedupe at merge.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy26-q2-earnings-2026-01-28-on-premises-server-revenue-up-2pct-sql-server-2025-launch", "citation_text": "2% higher revenue year over year in Microsoft's on-premises server business for October to December 2025, helped by the SQL Server 2025 launch and purchasing ahead of memory price increases (Microsoft, 2026). Source: Microsoft, \"Microsoft FY26 Second Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptQandAFY26q2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy26-q2-earnings-2026-01-28-on-premises-server-revenue-up-2pct-sql-server-2025-launch." }, { "id": "microsoft-fy26-q3-earnings-2026-04-29-on-premises-server-revenue-increased-slightly-down-3pct-constant-currency", "family": "next-versions-adoption", "statement": "Slightly higher revenue as reported, and 3% lower in constant currency, in Microsoft's on-premises server business for January to March 2026, with the ongoing customer shift to cloud offerings (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "% year-over-year change in Microsoft on-premises server business revenue (as reported)", "display_value": "slightly up (-3% in constant currency)", "display_label": "", "display_hook": null, "row_label": "January to March 2026 (FY26 Q3)", "publisher_short": null, "geography": "Worldwide", "period": "2026-Q1 (January to March 2026, Microsoft FY26 Q3)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY26 Third Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptQandAFY26Q3", "source_type": "primary", "source_access": "open", "published_at": "2026-04-29", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue increased slightly and decreased 3% in constant currency with ongoing customer shift to cloud offerings.", "locator": "Amy Hood's prepared remarks, Intelligent Cloud segment", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Transcript .docx published on Microsoft's investor site (microsoft.com/en-us/investor/events) via the aka.ms/transcriptFYxxQx short link; saved as raw/next-versions-adoption/ms-transcript-fy26q3.docx and .txt. Overlap: the on-premises-and-cloud-share family also covers Microsoft earnings statements on server products; dedupe at merge. Value is null because Microsoft gave no reported-currency percentage; the series CSV carries 0 for this quarter, labelled 'increased slightly'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy26-q3-earnings-2026-04-29-on-premises-server-revenue-increased-slightly-down-3pct-constant-currency", "citation_text": "Slightly higher revenue as reported, and 3% lower in constant currency, in Microsoft's on-premises server business for January to March 2026, with the ongoing customer shift to cloud offerings (Microsoft, 2026). Source: Microsoft, \"Microsoft FY26 Third Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptQandAFY26Q3). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy26-q3-earnings-2026-04-29-on-premises-server-revenue-increased-slightly-down-3pct-constant-currency." }, { "id": "microsoft-fy26-q4-earnings-2026-07-29-on-premises-server-revenue-unchanged-outlook-low-to-mid-single-digit-decline", "family": "next-versions-adoption", "statement": "0% change year over year in Microsoft's on-premises server business revenue for April to June 2026, with Microsoft guiding to a low-to-mid-single-digit decline for the following quarter (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 0, "unit": "% year-over-year change in Microsoft on-premises server business revenue (as reported)", "display_value": "unchanged", "display_label": "", "display_hook": null, "row_label": "April to June 2026 (FY26 Q4)", "publisher_short": null, "geography": "Worldwide", "period": "2026-Q2 (April to June 2026, Microsoft FY26 Q4)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY26 Fourth Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY26Q4.docx", "source_type": "primary", "source_access": "open", "published_at": "2026-07-29", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue was relatively unchanged year-over-year and was down 1% in constant currency. Results were ahead of expectations primarily driven by renewals with higher in-period revenue recognition", "locator": "Amy Hood's prepared remarks, Intelligent Cloud segment; outlook paragraph: 'we expect revenue to decline in the low to mid-single digits'", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Transcript .docx published on Microsoft's investor site (microsoft.com/en-us/investor/events) via the aka.ms/transcriptFYxxQx short link; saved as raw/next-versions-adoption/ms-transcript-fy26q4.docx and .txt. Overlap: the on-premises-and-cloud-share family also covers Microsoft earnings statements on server products; dedupe at merge.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy26-q4-earnings-2026-07-29-on-premises-server-revenue-unchanged-outlook-low-to-mid-single-digit-decline", "citation_text": "0% change year over year in Microsoft's on-premises server business revenue for April to June 2026, with Microsoft guiding to a low-to-mid-single-digit decline for the following quarter (Microsoft, 2026). Source: Microsoft, \"Microsoft FY26 Fourth Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY26Q4.docx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy26-q4-earnings-2026-07-29-on-premises-server-revenue-unchanged-outlook-low-to-mid-single-digit-decline." }, { "id": "microsoft-fy25-q3-earnings-2025-04-30-nadella-classic-migration-of-sql-and-windows-server-steady-progress", "family": "next-versions-adoption", "statement": "Classic migrations of SQL Server and Windows Server to Azure showed 'good steady state progress' in April 2025, Satya Nadella said on Microsoft's fiscal 2025 third-quarter earnings call (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": null, "unit": "qualitative statement (no figure)", "display_value": "no figure", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-Q1 (January to March 2025, Microsoft FY25 Q3)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY25 Third Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY25Q3", "source_type": "primary", "source_access": "open", "published_at": "2025-04-30", "accessed_at": "2026-10-14", "quote": "One is, I'll just say, the classic migration of whether it's SQL, Windows Server. And so, that's, again, got good steady state progress", "locator": "Q&A, Satya Nadella's answer to Brent Thill (Jefferies)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Transcript .docx published on Microsoft's investor site (microsoft.com/en-us/investor/events) via the aka.ms/transcriptFYxxQx short link; saved as raw/next-versions-adoption/ms-transcript-fy25q3.docx and .txt. Overlap: the on-premises-and-cloud-share family also covers Microsoft earnings statements on server products; dedupe at merge. Qualitative only: Microsoft gave no migration count.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q3-earnings-2025-04-30-nadella-classic-migration-of-sql-and-windows-server-steady-progress", "citation_text": "Classic migrations of SQL Server and Windows Server to Azure showed 'good steady state progress' in April 2025, Satya Nadella said on Microsoft's fiscal 2025 third-quarter earnings call (Microsoft, 2025). Source: Microsoft, \"Microsoft FY25 Third Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY25Q3). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q3-earnings-2025-04-30-nadella-classic-migration-of-sql-and-windows-server-steady-progress." }, { "id": "microsoft-wsblog-2026-02-25-many-customers-already-upgrading-no-windows-server-2025-adoption-figure", "family": "next-versions-adoption", "statement": "0 adoption figures for Windows Server 2025 accompanied Microsoft's February 2026 statement that 'many customers are already upgrading to the latest version of Windows Server' (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": 0, "unit": "Windows Server 2025 adoption figures published by Microsoft in the post", "display_value": "no figure", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-02-25", "population": "Microsoft's Windows Server customers", "sample_n": null, "publisher": "Microsoft", "source_title": "Planning ahead for Windows Server 2016 end of support", "source_url": "https://www.microsoft.com/en-us/windows-server/blog/2026/02/25/planning-ahead-for-windows-server-2016-end-of-support/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-02-25", "accessed_at": "2026-10-14", "quote": "Many customers are already upgrading to the latest version of Windows Server to take advantage of the newest innovations and modernize their IT environment.", "locator": "Third paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Searched for Microsoft adoption figures for Windows Server 2025: none in this post, in the 20 April 2026 post 'Planning your path to Windows Server 2025' (saved), in the Ignite 2024 and 2025 Books of News (saved), or in the nine earnings transcripts (saved). Raw: ms-wsblog-2026-02-25-ws2016-eos.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-wsblog-2026-02-25-many-customers-already-upgrading-no-windows-server-2025-adoption-figure", "citation_text": "0 adoption figures for Windows Server 2025 accompanied Microsoft's February 2026 statement that 'many customers are already upgrading to the latest version of Windows Server' (Microsoft, 2026). Source: Microsoft, \"Planning ahead for Windows Server 2016 end of support\" (https://www.microsoft.com/en-us/windows-server/blog/2026/02/25/planning-ahead-for-windows-server-2016-end-of-support/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-wsblog-2026-02-25-many-customers-already-upgrading-no-windows-server-2025-adoption-figure." }, { "id": "redmondmag-2026-08-06-restates-windows-server-2016-arc-esu-generally-available", "family": "next-versions-adoption", "statement": "Azure Arc-enabled Extended Security Updates for Windows Server 2016 were reported as generally available on 6 August 2026 by Redmond Magazine, three days after Microsoft's 3 August portal enrolment date (Redmondmag.com, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "restatement of availability", "display_value": "GA reported 6 August 2026", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-08-06", "population": "Windows Server 2016 customers", "sample_n": null, "publisher": "Redmond Magazine", "source_title": "Microsoft Makes Azure Arc-Enabled Extended Security Updates for Windows Server 2016 Generally Available", "source_url": "https://redmondmag.com/blogs/redmond-dispatch/2026/08/microsoft-makes-azure-arc-enabled-extended-security-updates.aspx", "source_type": "secondary", "source_access": "open", "published_at": "2026-08-06", "accessed_at": "2026-10-14", "quote": "Microsoft has made Azure Arc-enabled Extended Security Updates (ESUs) for Windows Server 2016 generally available, providing organizations with a way to continue receiving critical security updates after the operating system reaches the end of support.", "locator": "First paragraph; 'Posted by Redmondmag.com Editors on 08/06/2026'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Restatement: the article names no Microsoft document; the primary is Microsoft Learn's Arc ESU page (enrolment from 3 August 2026). Raw: redmondmag-2026-08-arc-esu.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#redmondmag-2026-08-06-restates-windows-server-2016-arc-esu-generally-available", "citation_text": "Azure Arc-enabled Extended Security Updates for Windows Server 2016 were reported as generally available on 6 August 2026 by Redmond Magazine, three days after Microsoft's 3 August portal enrolment date (Redmondmag.com, 2026). Source: Redmond Magazine, \"Microsoft Makes Azure Arc-Enabled Extended Security Updates for Windows Server 2016 Generally Available\" (https://redmondmag.com/blogs/redmond-dispatch/2026/08/microsoft-makes-azure-arc-enabled-extended-security-updates.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#redmondmag-2026-08-06-restates-windows-server-2016-arc-esu-generally-available." }, { "id": "microsoft-wsblog-2024-11-04-windows-server-2025-ga-arc-hotpatching-preview-will-require-subscription-azure-edition-free", "family": "next-versions-adoption", "statement": "Hotpatching for Windows Server 2025 outside Azure was in free preview and 'will require a monthly subscription' when Microsoft announced general availability in November 2024, while staying included for Datacenter: Azure Edition (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 0, "unit": "USD per CPU core per month for Azure Arc hotpatching (preview period)", "display_value": "$0 (preview)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2024-11-04", "population": "Azure Arc-enabled Windows Server 2025 Standard and Datacenter servers", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 now generally available, with advanced security, improved performance, and cloud agility", "source_url": "https://www.microsoft.com/en-us/windows-server/blog/2024/11/04/windows-server-2025-now-generally-available-with-advanced-security-improved-performance-and-cloud-agility/", "source_type": "manufacturer", "source_access": "open", "published_at": "2024-11-04", "accessed_at": "2026-10-14", "quote": "Hotpatching, currently in preview, will require a monthly subscription. The hotpatching feature remains no additional cost for Windows Server Datacenter Azure Edition virtual machines.", "locator": "Section 'Cloud agility anywhere', bullet 'Hotpatching enabled by Azure Arc'", "derived": false, "formula": null, "headline": false, "series": "windows-server-2025-arc-hotpatch-price-usd-per-core-month", "history": [], "notes": "Series start for the hotpatch price: free preview (Nov 2024) to $1.50 per core per month (16 July 2025) to $0 (15 May 2026). Raw: ms-wsblog-2024-11-04-ws2025-ga.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-wsblog-2024-11-04-windows-server-2025-ga-arc-hotpatching-preview-will-require-subscription-azure-edition-free", "citation_text": "Hotpatching for Windows Server 2025 outside Azure was in free preview and 'will require a monthly subscription' when Microsoft announced general availability in November 2024, while staying included for Datacenter: Azure Edition (Microsoft, 2024). Source: Microsoft, \"Windows Server 2025 now generally available, with advanced security, improved performance, and cloud agility\" (https://www.microsoft.com/en-us/windows-server/blog/2024/11/04/windows-server-2025-now-generally-available-with-advanced-security-improved-performance-and-cloud-agility/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-wsblog-2024-11-04-windows-server-2025-ga-arc-hotpatching-preview-will-require-subscription-azure-edition-free." }, { "id": "microsoft-wsblog-2025-04-24-hotpatch-reboots-reduced-from-12-to-4-per-year", "family": "next-versions-adoption", "statement": "4 restarts a year instead of 12 is what Microsoft says hotpatching requires on Windows Server 2025, with quarterly baseline updates replacing monthly reboots (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 4, "unit": "server restarts per year with hotpatching (versus 12 without)", "display_value": "4 restarts a year (from 12)", "display_label": "Microsoft Windows Server blog, 24 April 2025", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-04-24", "population": "Windows Server 2025 servers enrolled in hotpatching", "sample_n": null, "publisher": "Microsoft", "source_title": "Tired of all the restarts? Get hotpatching for Windows Server", "source_url": "https://www.microsoft.com/en-us/windows-server/blog/2025/04/24/tired-of-all-the-restarts-get-hotpatching-for-windows-server/", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-04-24", "accessed_at": "2026-10-14", "quote": "Greater uptime with fewer reboots, instead of rebooting monthly (12 times a year) rebooting is reduced to quarterly (4 times a year).", "locator": "Section 'How does hotpatching work?', first bullet", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Manufacturer claim about its own feature; unplanned baselines (zero-day fixes) add restarts (Learn hotpatch page). Raw: ms-wsblog-2025-07-hotpatch-ga.txt (the post as updated 10 July 2025).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-wsblog-2025-04-24-hotpatch-reboots-reduced-from-12-to-4-per-year", "citation_text": "4 restarts a year instead of 12 is what Microsoft says hotpatching requires on Windows Server 2025, with quarterly baseline updates replacing monthly reboots (Microsoft, 2025). Source: Microsoft, \"Tired of all the restarts? Get hotpatching for Windows Server\" (https://www.microsoft.com/en-us/windows-server/blog/2025/04/24/tired-of-all-the-restarts-get-hotpatching-for-windows-server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-wsblog-2025-04-24-hotpatch-reboots-reduced-from-12-to-4-per-year." }, { "id": "microsoft-learn-hotpatch-2025-07-four-planned-baselines-and-eight-hotpatch-releases-per-year", "family": "next-versions-adoption", "statement": "8 hotpatch releases and 4 planned baseline releases make up a planned hotpatching year on Windows Server, with baselines in January, April, July and October requiring a restart (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 8, "unit": "hotpatch releases in a planned calendar year", "display_value": "8 hotpatches + 4 baselines a year", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-07-14", "population": "Windows Server 2022 and 2025 hotpatch-enabled servers", "sample_n": null, "publisher": "Microsoft", "source_title": "Hotpatch for Windows Server", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/hotpatch", "source_type": "primary", "source_access": "open", "published_at": "2025-07-14", "accessed_at": "2026-10-14", "quote": "For example, a planned one year release period might include four planned baseline releases in a calendar year and eight Hotpatch releases.", "locator": "Section 'How Hotpatch works', 'Planned baselines' bullet (ms.date 2025-07-14, updated 2026-09-08)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Baseline months named in the 16 July 2025 Tech Community GA post: 'January, April, July and October'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-hotpatch-2025-07-four-planned-baselines-and-eight-hotpatch-releases-per-year", "citation_text": "8 hotpatch releases and 4 planned baseline releases make up a planned hotpatching year on Windows Server, with baselines in January, April, July and October requiring a restart (Microsoft, 2025). Source: Microsoft, \"Hotpatch for Windows Server\" (https://learn.microsoft.com/en-us/windows-server/get-started/hotpatch). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-hotpatch-2025-07-four-planned-baselines-and-eight-hotpatch-releases-per-year." }, { "id": "microsoft-2025-hotpatch-ga-three-different-dates-in-microsoft-posts", "family": "next-versions-adoption", "statement": "3 different general-availability dates for Windows Server 2025 hotpatching appear in Microsoft's own posts: 1 July 2025 in the April 2025 announcement, 16 June 2025 in its 10 July update note, and 16 July 2025 in the Tech Community GA post (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 3, "unit": "distinct hotpatching GA dates in Microsoft posts", "display_value": "1 July, 16 June or 16 July 2025", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-06-16 to 2025-07-16", "population": "Microsoft's own announcements", "sample_n": null, "publisher": "Microsoft", "source_title": "Tired of all the restarts? Get hotpatching for Windows Server", "source_url": "https://www.microsoft.com/en-us/windows-server/blog/2025/04/24/tired-of-all-the-restarts-get-hotpatching-for-windows-server/", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-07-10", "accessed_at": "2026-10-14", "quote": "Updated on July 10, 2025: To remove free preview language since the product is generally available as of June 16, 2025.", "locator": "Update note at the top of the post; the post's summary on the blog index still reads 'will become generally available as a subscription service on July 1st, 2025'", "derived": true, "formula": "count of distinct GA dates: April 2025 post summary (1 July 2025), its 10 July 2025 update note (16 June 2025), Tech Community post 4433915 (16 July 2025)", "headline": false, "series": "", "history": [], "notes": "Contradiction record. The Tech Community post (16 July 2025) is the operative one for billing ('as of July 16, 2025, a monthly subscription fee ... will apply'). Third-party coverage uses 1 July (heise, Petri) or 16 July (Licensing School). Raw: ms-wsblog-2025-07-hotpatch-ga.txt, ms-wsblog-2026-02-25-ws2016-eos.txt (related-posts blurb).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-hotpatch-ga-three-different-dates-in-microsoft-posts", "citation_text": "3 different general-availability dates for Windows Server 2025 hotpatching appear in Microsoft's own posts: 1 July 2025 in the April 2025 announcement, 16 June 2025 in its 10 July update note, and 16 July 2025 in the Tech Community GA post (Microsoft, 2025). Source: Microsoft, \"Tired of all the restarts? Get hotpatching for Windows Server\" (https://www.microsoft.com/en-us/windows-server/blog/2025/04/24/tired-of-all-the-restarts-get-hotpatching-for-windows-server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-2025-hotpatch-ga-three-different-dates-in-microsoft-posts." }, { "id": "microsoft-mc1405556-2026-06-26-windows-server-2022-azure-edition-hotpatch-extended-through-october-2027", "family": "next-versions-adoption", "statement": "Hotpatch updates for Windows Server 2022 Datacenter: Azure Edition continue through October 2027, one year past the 13 October 2026 end of mainstream support, after Microsoft's June 2026 extension (Microsoft, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "hotpatch support end date", "display_value": "October 2027", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2027-10", "population": "Windows Server 2022 Datacenter: Azure Edition virtual machines enrolled in hotpatch updates", "sample_n": null, "publisher": "Microsoft", "source_title": "MC1405556: Windows Server 2022 hotpatch update support extended through October 2027 (Microsoft 365 message center)", "source_url": "https://mc.merill.net/message/MC1405556", "source_type": "primary", "source_access": "open", "published_at": "2026-06-26", "accessed_at": "2026-10-14", "quote": "Hotpatch update support, previously scheduled to end in October 2026, will now continue through October 2027.", "locator": "Message body, first paragraph; published 26 June 2026", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "mc.merill.net mirrors Microsoft 365 message center posts verbatim (as used for page 1's MC1274396 record); the original requires an admin sign-in. Applies only to Datacenter: Azure Edition; other editions' dates belong to the lifecycle-dates-esu family. Reported by BleepingComputer and Petri in July 2026.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mc1405556-2026-06-26-windows-server-2022-azure-edition-hotpatch-extended-through-october-2027", "citation_text": "Hotpatch updates for Windows Server 2022 Datacenter: Azure Edition continue through October 2027, one year past the 13 October 2026 end of mainstream support, after Microsoft's June 2026 extension (Microsoft, 2026). Source: Microsoft, \"MC1405556: Windows Server 2022 hotpatch update support extended through October 2027 (Microsoft 365 message center)\" (https://mc.merill.net/message/MC1405556). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-mc1405556-2026-06-26-windows-server-2022-azure-edition-hotpatch-extended-through-october-2027." }, { "id": "microsoft-wsblog-2024-11-04-windows-server-2025-up-to-60pct-more-storage-iops-than-windows-server-2022", "family": "next-versions-adoption", "statement": "60% more storage IOPS is the maximum gain Microsoft claims for Windows Server 2025 over Windows Server 2022 on identical NVMe systems, in a 4K random-read test (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 60, "unit": "% more storage IOPS versus Windows Server 2022 (Microsoft's own test)", "display_value": "up to 60%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2024-11-04", "population": "Microsoft's internal benchmark (4K random read, Diskspd 2.2, Kioxia CM7 SSD)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server 2025 now generally available, with advanced security, improved performance, and cloud agility", "source_url": "https://www.microsoft.com/en-us/windows-server/blog/2024/11/04/windows-server-2025-now-generally-available-with-advanced-security-improved-performance-and-cloud-agility/", "source_type": "manufacturer", "source_access": "open", "published_at": "2024-11-04", "accessed_at": "2026-10-14", "quote": "NVMe storage performance: Windows Server 2025 delivers up to 60% more storage IOPs performance compared to Windows Server 2022 on identical systems. (Based on 4K randread using Diskpsd 2.2 with Kioxia CM7 SSd)", "locator": "Section 'AI, performance, and scale', NVMe bullet", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Manufacturer performance claim, not adoption; same post gives Hyper-V maximums of 240 TB memory per VM (10x) and 2,048 virtual processors (about 8.5x).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-wsblog-2024-11-04-windows-server-2025-up-to-60pct-more-storage-iops-than-windows-server-2022", "citation_text": "60% more storage IOPS is the maximum gain Microsoft claims for Windows Server 2025 over Windows Server 2022 on identical NVMe systems, in a 4K random-read test (Microsoft, 2024). Source: Microsoft, \"Windows Server 2025 now generally available, with advanced security, improved performance, and cloud agility\" (https://www.microsoft.com/en-us/windows-server/blog/2024/11/04/windows-server-2025-now-generally-available-with-advanced-security-improved-performance-and-cloud-agility/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-wsblog-2024-11-04-windows-server-2025-up-to-60pct-more-storage-iops-than-windows-server-2022." }, { "id": "mmri-2025-12-windows-server-2016-share-13-8pct-of-non-virtualised-on-premises-servers-japan", "family": "next-versions-adoption", "statement": "13.8% was Windows Server 2016's share of the operating systems that IT staff at Japanese companies reported for their non-virtualised on-premises servers in October to December 2025, within a Windows Server family share of just under 90%, in MM Research Institute's survey of 45,172 IT staff (MM Research Institute, 2025).", "short_statement": null, "short_refs": null, "value": 13.8, "unit": "% of non-virtualised on-premises servers (Japan, MM Research screening survey)", "display_value": "13.8%", "display_label": "MM Research Institute survey, October to December 2025, 45,172 respondents", "display_hook": null, "row_label": "MM Research Institute, late 2025: non-virtualised servers on Windows Server 2016", "publisher_short": null, "geography": "Japan", "period": "2025-10 to 2025-12", "population": "Japanese companies' IT department staff (screening survey, 45,172 valid responses)", "sample_n": 45172, "publisher": "MM Research Institute (via @IT)", "source_title": "「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)", "source_url": "https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html", "source_type": "secondary", "source_access": "open", "published_at": "2025-12-24", "accessed_at": "2026-10-14", "quote": "オンプレミス（仮想化なし）で稼働するサーバのOSを聞くと、「Windows Server」シリーズが全体の9割弱を占め、そのうちWindows Server 2016が13.8％となった。", "locator": "Section 'いまだ一定数のWindows Server 2016が稼働中', second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "MM Research Institute (MM総研) survey '国内サーバー稼働実態の追跡調査', web survey, October to December 2025; screening 45,172 valid responses from Japanese companies' IT staff, main survey 967 valid responses from Windows Server 2016 and virtualisation users (survey outline at the foot of the article). The article is a Microsoft Japan-sponsored (PR) piece on @IT; MM Research is an independent analyst firm and the survey's commissioning is not stated. Raw: atmarkit-2025-12-24-mmri-ws2016.txt (Shift_JIS source, saved as UTF-8).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-windows-server-2016-share-13-8pct-of-non-virtualised-on-premises-servers-japan", "citation_text": "13.8% was Windows Server 2016's share of the operating systems that IT staff at Japanese companies reported for their non-virtualised on-premises servers in October to December 2025, within a Windows Server family share of just under 90%, in MM Research Institute's survey of 45,172 IT staff (MM Research Institute, 2025). Source: MM Research Institute (via @IT), \"「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)\" (https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-windows-server-2016-share-13-8pct-of-non-virtualised-on-premises-servers-japan." }, { "id": "mmri-2025-12-windows-server-host-os-share-75-3pct-guest-os-78-5pct-virtualised-servers-japan", "family": "next-versions-adoption", "statement": "75.3% of virtualisation host operating systems and 78.5% of guest operating systems at Japanese companies were Windows Server in October to December 2025, with Windows Server 2016 about a fifth of each (MM Research Institute, 2025).", "short_statement": null, "short_refs": null, "value": 75.3, "unit": "% of virtualisation host OS installations that are Windows Server (Japan)", "display_value": "75.3% (hosts), 78.5% (guests)", "display_label": "", "display_hook": null, "row_label": "MM Research Institute: Windows Server as host and guest OS on virtualised servers", "publisher_short": null, "geography": "Japan", "period": "2025-10 to 2025-12", "population": "Japanese companies' virtualised servers (MM Research survey)", "sample_n": 45172, "publisher": "MM Research Institute (via @IT)", "source_title": "「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)", "source_url": "https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html", "source_type": "secondary", "source_access": "open", "published_at": "2025-12-24", "accessed_at": "2026-10-14", "quote": "仮想化サーバもWindows ServerのシェアはホストOSで75.3％、ゲストOSで78.5％と共に高く、そのうちWindows Server 2016はいずれも2割ほどを占める。", "locator": "Section 'いまだ一定数のWindows Server 2016が稼働中', second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "MM Research Institute (MM総研) survey '国内サーバー稼働実態の追跡調査', web survey, October to December 2025; screening 45,172 valid responses from Japanese companies' IT staff, main survey 967 valid responses from Windows Server 2016 and virtualisation users (survey outline at the foot of the article). The article is a Microsoft Japan-sponsored (PR) piece on @IT; MM Research is an independent analyst firm and the survey's commissioning is not stated. Raw: atmarkit-2025-12-24-mmri-ws2016.txt (Shift_JIS source, saved as UTF-8).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-windows-server-host-os-share-75-3pct-guest-os-78-5pct-virtualised-servers-japan", "citation_text": "75.3% of virtualisation host operating systems and 78.5% of guest operating systems at Japanese companies were Windows Server in October to December 2025, with Windows Server 2016 about a fifth of each (MM Research Institute, 2025). Source: MM Research Institute (via @IT), \"「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)\" (https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-windows-server-host-os-share-75-3pct-guest-os-78-5pct-virtualised-servers-japan." }, { "id": "mmri-2025-12-windows-server-2016-about-20pct-of-virtualised-host-and-guest-windows-server-japan", "family": "next-versions-adoption", "statement": "About 20% of Windows Server host and guest operating systems on virtualised servers at Japanese companies were Windows Server 2016 in late 2025, in MM Research Institute's survey (MM Research Institute, 2025).", "short_statement": null, "short_refs": null, "value": 20, "unit": "% of Windows Server host and guest OS on virtualised servers (Japan, approximate '2割ほど')", "display_value": "about 20%", "display_label": "", "display_hook": null, "row_label": "MM Research Institute: Windows Server 2016 among virtualised Windows Server", "publisher_short": null, "geography": "Japan", "period": "2025-10 to 2025-12", "population": "Japanese companies' virtualised servers running Windows Server", "sample_n": 45172, "publisher": "MM Research Institute (via @IT)", "source_title": "「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)", "source_url": "https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html", "source_type": "secondary", "source_access": "open", "published_at": "2025-12-24", "accessed_at": "2026-10-14", "quote": "そのうちWindows Server 2016はいずれも2割ほどを占める。", "locator": "Section 'いまだ一定数のWindows Server 2016が稼働中', second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "MM Research Institute (MM総研) survey '国内サーバー稼働実態の追跡調査', web survey, October to December 2025; screening 45,172 valid responses from Japanese companies' IT staff, main survey 967 valid responses from Windows Server 2016 and virtualisation users (survey outline at the foot of the article). The article is a Microsoft Japan-sponsored (PR) piece on @IT; MM Research is an independent analyst firm and the survey's commissioning is not stated. Raw: atmarkit-2025-12-24-mmri-ws2016.txt (Shift_JIS source, saved as UTF-8).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-windows-server-2016-about-20pct-of-virtualised-host-and-guest-windows-server-japan", "citation_text": "About 20% of Windows Server host and guest operating systems on virtualised servers at Japanese companies were Windows Server 2016 in late 2025, in MM Research Institute's survey (MM Research Institute, 2025). Source: MM Research Institute (via @IT), \"「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)\" (https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-windows-server-2016-about-20pct-of-virtualised-host-and-guest-windows-server-japan." }, { "id": "mmri-2025-12-cloud-migration-destination-about-5pct-of-windows-server-2016-users-japan", "family": "next-versions-adoption", "statement": "About 5% of Japanese Windows Server 2016 users named cloud migration as their migration destination in late 2025, down from MM Research Institute's survey at the Windows Server 2012 end of support (MM Research Institute, 2025).", "short_statement": null, "short_refs": null, "value": 5, "unit": "% of Windows Server 2016 users choosing 'cloud migration' as the destination (Japan)", "display_value": "about 5%", "display_label": "MM Research Institute survey, October to December 2025, 967 Windows Server 2016 users", "display_hook": null, "row_label": "MM Research Institute: naming the cloud as destination", "publisher_short": null, "geography": "Japan", "period": "2025-10 to 2025-12", "population": "Japanese companies using Windows Server 2016 (main survey, 967 valid responses)", "sample_n": 967, "publisher": "MM Research Institute (via @IT)", "source_title": "「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)", "source_url": "https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html", "source_type": "secondary", "source_access": "open", "published_at": "2025-12-24", "accessed_at": "2026-10-14", "quote": "今回の調査では「クラウド移行」という回答は全体の5％程度（図1）であり、Windows Server 2012サポート終了時の調査と比べると減少傾向が見られる。", "locator": "Section 'クラウドへの移行は減少傾向', first paragraph and Figure 1", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "MM Research Institute (MM総研) survey '国内サーバー稼働実態の追跡調査', web survey, October to December 2025; screening 45,172 valid responses from Japanese companies' IT staff, main survey 967 valid responses from Windows Server 2016 and virtualisation users (survey outline at the foot of the article). The article is a Microsoft Japan-sponsored (PR) piece on @IT; MM Research is an independent analyst firm and the survey's commissioning is not stated. Raw: atmarkit-2025-12-24-mmri-ws2016.txt (Shift_JIS source, saved as UTF-8).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-cloud-migration-destination-about-5pct-of-windows-server-2016-users-japan", "citation_text": "About 5% of Japanese Windows Server 2016 users named cloud migration as their migration destination in late 2025, down from MM Research Institute's survey at the Windows Server 2012 end of support (MM Research Institute, 2025). Source: MM Research Institute (via @IT), \"「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)\" (https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-cloud-migration-destination-about-5pct-of-windows-server-2016-users-japan." }, { "id": "mmri-2025-12-windows-server-2016-end-of-support-awareness-over-80pct-exact-date-unknown-70pct-japan", "family": "next-versions-adoption", "statement": "80%+ of Japanese Windows Server 2016 users knew extended support was ending in late 2025, but 70% could not pick the correct end-of-support month, in MM Research Institute's survey (MM Research Institute, 2025).", "short_statement": null, "short_refs": null, "value": 80, "unit": "% of Windows Server 2016 users aware of the end of extended support (Japan)", "display_value": "over 80% aware; 70% unsure of the date", "display_label": "MM Research Institute survey, late 2025", "display_hook": null, "row_label": "MM Research Institute: aware support is ending; unsure of the month", "publisher_short": null, "geography": "Japan", "period": "2025-10 to 2025-12", "population": "Japanese companies using Windows Server 2016 (main survey)", "sample_n": 967, "publisher": "MM Research Institute (via @IT)", "source_title": "「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)", "source_url": "https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html", "source_type": "secondary", "source_access": "open", "published_at": "2025-12-24", "accessed_at": "2026-10-14", "quote": "延長サポート終了自体の認知度は8割を超えた。しかしサポート終了の日付を選択してもらう設問では、正確なサポート終了年月を把握していない層が7割に上った。", "locator": "Section 'いまだ一定数のWindows Server 2016が稼働中', fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "MM Research Institute (MM総研) survey '国内サーバー稼働実態の追跡調査', web survey, October to December 2025; screening 45,172 valid responses from Japanese companies' IT staff, main survey 967 valid responses from Windows Server 2016 and virtualisation users (survey outline at the foot of the article). The article is a Microsoft Japan-sponsored (PR) piece on @IT; MM Research is an independent analyst firm and the survey's commissioning is not stated. Raw: atmarkit-2025-12-24-mmri-ws2016.txt (Shift_JIS source, saved as UTF-8).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-windows-server-2016-end-of-support-awareness-over-80pct-exact-date-unknown-70pct-japan", "citation_text": "80%+ of Japanese Windows Server 2016 users knew extended support was ending in late 2025, but 70% could not pick the correct end-of-support month, in MM Research Institute's survey (MM Research Institute, 2025). Source: MM Research Institute (via @IT), \"「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)\" (https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-windows-server-2016-end-of-support-awareness-over-80pct-exact-date-unknown-70pct-japan." }, { "id": "mmri-2025-12-windows-server-2016-not-yet-migrated-reason-staff-shortage-45pct-japan", "family": "next-versions-adoption", "statement": "45% of Japanese companies that had not migrated off Windows Server 2016 gave staff shortage as the reason in late 2025, the largest answer in MM Research Institute's survey (MM Research Institute, 2025).", "short_statement": null, "short_refs": null, "value": 45, "unit": "% of Windows Server 2016 users not yet migrated citing staff shortage (Japan)", "display_value": "45%", "display_label": "", "display_hook": null, "row_label": "MM Research Institute: not migrated because of staff shortage", "publisher_short": null, "geography": "Japan", "period": "2025-10 to 2025-12", "population": "Japanese companies using Windows Server 2016 that had not migrated", "sample_n": 967, "publisher": "MM Research Institute (via @IT)", "source_title": "「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)", "source_url": "https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html", "source_type": "secondary", "source_access": "open", "published_at": "2025-12-24", "accessed_at": "2026-10-14", "quote": "Windows Server 2016を移行できていない理由としては、「人手不足」（45％）が大多数だ。", "locator": "Section '人手不足でも後回しは避けたい', first paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "MM Research Institute (MM総研) survey '国内サーバー稼働実態の追跡調査', web survey, October to December 2025; screening 45,172 valid responses from Japanese companies' IT staff, main survey 967 valid responses from Windows Server 2016 and virtualisation users (survey outline at the foot of the article). The article is a Microsoft Japan-sponsored (PR) piece on @IT; MM Research is an independent analyst firm and the survey's commissioning is not stated. Raw: atmarkit-2025-12-24-mmri-ws2016.txt (Shift_JIS source, saved as UTF-8).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-windows-server-2016-not-yet-migrated-reason-staff-shortage-45pct-japan", "citation_text": "45% of Japanese companies that had not migrated off Windows Server 2016 gave staff shortage as the reason in late 2025, the largest answer in MM Research Institute's survey (MM Research Institute, 2025). Source: MM Research Institute (via @IT), \"「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)\" (https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-windows-server-2016-not-yet-migrated-reason-staff-shortage-45pct-japan." }, { "id": "mmri-2025-12-windows-server-2016-use-web-server-54-2pct-file-server-17-3pct-japan", "family": "next-versions-adoption", "statement": "54.2% of Windows Server 2016 use at Japanese companies was as a web server in late 2025, followed by file server (17.3%), application server (11.3%) and database server (5.4%) (MM Research Institute, 2025).", "short_statement": null, "short_refs": null, "value": 54.2, "unit": "% of Windows Server 2016 uses that are web servers (Japan)", "display_value": "54.2%", "display_label": "", "display_hook": null, "row_label": "MM Research Institute: Windows Server 2016 used as a web server", "publisher_short": null, "geography": "Japan", "period": "2025-10 to 2025-12", "population": "Japanese companies using Windows Server 2016", "sample_n": 967, "publisher": "MM Research Institute (via @IT)", "source_title": "「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)", "source_url": "https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html", "source_type": "secondary", "source_access": "open", "published_at": "2025-12-24", "accessed_at": "2026-10-14", "quote": "Windows Server 2016の用途を聞くと、Webサーバ（54.2％）、ファイルサーバ（17.3％）、アプリケーションサーバ（11.3％）、データベースサーバ（5.4％）と続く。", "locator": "Section '移行の難易度が高いものは、早急な検討が必須', first paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "MM Research Institute (MM総研) survey '国内サーバー稼働実態の追跡調査', web survey, October to December 2025; screening 45,172 valid responses from Japanese companies' IT staff, main survey 967 valid responses from Windows Server 2016 and virtualisation users (survey outline at the foot of the article). The article is a Microsoft Japan-sponsored (PR) piece on @IT; MM Research is an independent analyst firm and the survey's commissioning is not stated. Raw: atmarkit-2025-12-24-mmri-ws2016.txt (Shift_JIS source, saved as UTF-8).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-windows-server-2016-use-web-server-54-2pct-file-server-17-3pct-japan", "citation_text": "54.2% of Windows Server 2016 use at Japanese companies was as a web server in late 2025, followed by file server (17.3%), application server (11.3%) and database server (5.4%) (MM Research Institute, 2025). Source: MM Research Institute (via @IT), \"「Windows Server」クラウド移行に減速の兆しも？ セキュリティ観点含めた適切なサーバ移行が急務 (Windows Server 2016サポート終了と移行実態)\" (https://atmarkit.itmedia.co.jp/ait/articles/2512/24/news003.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2025-12-windows-server-2016-use-web-server-54-2pct-file-server-17-3pct-japan." }, { "id": "mmri-2026-04-windows-server-2016-about-250000-units-in-operation-japan", "family": "next-versions-adoption", "statement": "About 250,000 Windows Server 2016 systems were in operation in Japan in November 2025, by MM Research Institute's estimate, with 12% of large and 20% of small and medium-sized companies unaware of the end of support (MM Research Institute, 2026).", "short_statement": "About **250,000** Windows Server 2016 systems were still running in Japan in November 2025.", "short_refs": null, "value": 250000, "unit": "Windows Server 2016 systems in operation in Japan (MM Research estimate)", "display_value": "about 250,000", "display_label": "MM Research Institute estimate, November 2025, reported April 2026", "display_hook": null, "row_label": "MM Research Institute, November 2025: Windows Server 2016 systems in operation", "publisher_short": null, "geography": "Japan", "period": "2025-11", "population": "Windows Server 2016 systems in Japan, including virtual servers", "sample_n": null, "publisher": "MM Research Institute (via @IT)", "source_title": "いまだ約25万台が稼働 「Windows Server 2016」のEOSを「ただの延命」で終わらせてはいけない理由", "source_url": "https://atmarkit.itmedia.co.jp/ait/articles/2604/20/news003.html", "source_type": "secondary", "source_access": "open", "published_at": "2026-04-20", "accessed_at": "2026-10-14", "quote": "MM総研が2025年11月に実施した調査によると、国内で稼働しているWindows Server 2016は約25万台に上る。大企業の12％、中小企業の20％がEOSを認知しておらず", "locator": "Section 'いまだ約25万台のWindows Server 2016が稼働', first paragraph (Nakamura Shigeki, MM Research)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Sponsored (PR) @IT article from a seminar; the estimate is MM Research's own. Nikkei xTECH Active (23 April 2026, saved: nikkeibp-2026-04-23-ws2016.txt) quotes Nakamura: '25万台超が稼働中' as of end of December 2025. MM Research's own press release was not found online (m2ri.jp search). Raw: atmarkit-2026-04-20-mmri-250k-ws2016.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2026-04-windows-server-2016-about-250000-units-in-operation-japan", "citation_text": "About 250,000 Windows Server 2016 systems were in operation in Japan in November 2025, by MM Research Institute's estimate, with 12% of large and 20% of small and medium-sized companies unaware of the end of support (MM Research Institute, 2026). Source: MM Research Institute (via @IT), \"いまだ約25万台が稼働 「Windows Server 2016」のEOSを「ただの延命」で終わらせてはいけない理由\" (https://atmarkit.itmedia.co.jp/ait/articles/2604/20/news003.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#mmri-2026-04-windows-server-2016-about-250000-units-in-operation-japan." }, { "id": "nikkeibp-2026-04-23-mmri-windows-server-2016-migration-status-57pct-investigating-17pct-migrating-10pct-no-plan-japan", "family": "next-versions-adoption", "statement": "57% of Japanese Windows Server 2016 users were still investigating migration, 17% were migrating and 10% had no migration prospect as of late 2025, per MM Research Institute's survey reported in April 2026 (MM Research Institute, 2026).", "short_statement": null, "short_refs": null, "value": 57, "unit": "% of Windows Server 2016 users in Japan still at the investigation stage", "display_value": "57% investigating, 17% migrating, 10% no plan", "display_label": "MM Research Institute survey, reported by Nikkei xTECH Active, April 2026", "display_hook": null, "row_label": "MM Research Institute: users investigating, migrating, with no plan", "publisher_short": null, "geography": "Japan", "period": "2025-12", "population": "Japanese companies using Windows Server 2016 (MM Research '国内サーバー稼働状況実態調査')", "sample_n": null, "publisher": "MM Research Institute (via Nikkei xTECH Active)", "source_title": "Windows Server 2016のEOS対応 (Nikkei xTECH Active sponsored roundtable with MM Research, Dell Technologies and a Microsoft trainer)", "source_url": "https://active.nikkeibp.co.jp/atcl/sp/b/26/04/23/01164/", "source_type": "secondary", "source_access": "open", "published_at": "2026-04-23", "accessed_at": "2026-10-14", "quote": "移行状況としては「移行調査中」が57％で最大、続いて「移行中」が17％、「移行見通しなし」が10％です。", "locator": "Nakamura's first answer (page 1 of the article)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Sponsored roundtable article; page 2 is behind a free registration wall. The same answer estimates '25万台超' Windows Server 2016 in operation at end of December 2025. Raw: nikkeibp-2026-04-23-ws2016.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#nikkeibp-2026-04-23-mmri-windows-server-2016-migration-status-57pct-investigating-17pct-migrating-10pct-no-plan-japan", "citation_text": "57% of Japanese Windows Server 2016 users were still investigating migration, 17% were migrating and 10% had no migration prospect as of late 2025, per MM Research Institute's survey reported in April 2026 (MM Research Institute, 2026). Source: MM Research Institute (via Nikkei xTECH Active), \"Windows Server 2016のEOS対応 (Nikkei xTECH Active sponsored roundtable with MM Research, Dell Technologies and a Microsoft trainer)\" (https://active.nikkeibp.co.jp/atcl/sp/b/26/04/23/01164/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#nikkeibp-2026-04-23-mmri-windows-server-2016-migration-status-57pct-investigating-17pct-migrating-10pct-no-plan-japan." }, { "id": "dell-japan-2026-02-13-windows-server-2016-still-used-by-43-1pct-of-companies-50-999-employees", "family": "next-versions-adoption", "statement": "43.1% of Japanese companies with 50 to 999 employees still used Windows Server 2016 in early 2026, in a Dell Technologies-sponsored survey, eleven months before its end of extended support (Dell Technologies, 2026).", "short_statement": "**43.1%** of Japanese firms with 50 to 999 staff still used Windows Server 2016 in early 2026, in a Dell-sponsored survey.", "short_refs": null, "value": 43.1, "unit": "% of surveyed Japanese companies (50 to 999 employees) using Windows Server 2016", "display_value": "43.1%", "display_label": "Dell Technologies-sponsored survey, February 2026", "display_hook": null, "row_label": "Dell-sponsored survey, early 2026: firms of 50 to 999 staff still using Windows Server 2016", "publisher_short": null, "geography": "Japan", "period": "2026-02", "population": "Japanese companies with 50 to 999 employees (Dell Technologies-sponsored survey; sample size not stated)", "sample_n": null, "publisher": "Dell Technologies Japan (via Mynavi TECH+)", "source_title": "調査結果から明らかになったWindows Server 2025の利用状況。注目された機能やセキュリティ重視の姿勢に迫る", "source_url": "https://news.mynavi.jp/techplus/kikaku/20260213-4073625/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-02-13", "accessed_at": "2026-10-14", "quote": "延長サポート終了が迫ったWindows Server 2016の利用率も依然として43.1%にとどまっているという。", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Dell Technologies-sponsored survey report '「勤務先サーバの利用状況とWindows Server 2025」に関する調査レポート' summarised in a sponsored Mynavi TECH+ article (提供：デル・テクノロジーズ); fieldwork dates and sample size are not stated and the full report is behind a registration form. Manufacturer label: vendor-sponsored survey. Raw: mynavi-dell-2026-02-13-ws2025-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#dell-japan-2026-02-13-windows-server-2016-still-used-by-43-1pct-of-companies-50-999-employees", "citation_text": "43.1% of Japanese companies with 50 to 999 employees still used Windows Server 2016 in early 2026, in a Dell Technologies-sponsored survey, eleven months before its end of extended support (Dell Technologies, 2026). Source: Dell Technologies Japan (via Mynavi TECH+), \"調査結果から明らかになったWindows Server 2025の利用状況。注目された機能やセキュリティ重視の姿勢に迫る\" (https://news.mynavi.jp/techplus/kikaku/20260213-4073625/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#dell-japan-2026-02-13-windows-server-2016-still-used-by-43-1pct-of-companies-50-999-employees." }, { "id": "dell-japan-2026-02-13-windows-server-2019-most-used-version-63-2pct-of-companies", "family": "next-versions-adoption", "statement": "63.2% of Japanese companies with 50 to 999 employees used Windows Server 2019 in early 2026, the most-used version in a Dell Technologies-sponsored survey (Dell Technologies, 2026).", "short_statement": null, "short_refs": null, "value": 63.2, "unit": "% of surveyed Japanese companies (50 to 999 employees) using Windows Server 2019", "display_value": "63.2%", "display_label": "", "display_hook": null, "row_label": "Dell-sponsored survey: using Windows Server 2019", "publisher_short": null, "geography": "Japan", "period": "2026-02", "population": "Japanese companies with 50 to 999 employees (Dell Technologies-sponsored survey; sample size not stated)", "sample_n": null, "publisher": "Dell Technologies Japan (via Mynavi TECH+)", "source_title": "調査結果から明らかになったWindows Server 2025の利用状況。注目された機能やセキュリティ重視の姿勢に迫る", "source_url": "https://news.mynavi.jp/techplus/kikaku/20260213-4073625/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-02-13", "accessed_at": "2026-10-14", "quote": "従業員数50～999名の企業を対象とした調査によると、Windows Server 2019の利用率が63.2%で最多となる一方", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Dell Technologies-sponsored survey report '「勤務先サーバの利用状況とWindows Server 2025」に関する調査レポート' summarised in a sponsored Mynavi TECH+ article (提供：デル・テクノロジーズ); fieldwork dates and sample size are not stated and the full report is behind a registration form. Manufacturer label: vendor-sponsored survey. Raw: mynavi-dell-2026-02-13-ws2025-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#dell-japan-2026-02-13-windows-server-2019-most-used-version-63-2pct-of-companies", "citation_text": "63.2% of Japanese companies with 50 to 999 employees used Windows Server 2019 in early 2026, the most-used version in a Dell Technologies-sponsored survey (Dell Technologies, 2026). Source: Dell Technologies Japan (via Mynavi TECH+), \"調査結果から明らかになったWindows Server 2025の利用状況。注目された機能やセキュリティ重視の姿勢に迫る\" (https://news.mynavi.jp/techplus/kikaku/20260213-4073625/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#dell-japan-2026-02-13-windows-server-2019-most-used-version-63-2pct-of-companies." }, { "id": "dell-japan-2026-02-13-windows-server-2025-already-migrated-1-5pct-of-companies", "family": "next-versions-adoption", "statement": "1.5% of Japanese companies with 50 to 999 employees had already migrated to Windows Server 2025 in early 2026, fifteen months after its release, in a Dell Technologies-sponsored survey (Dell Technologies, 2026).", "short_statement": "Only **1.5%** of Japanese firms with 50 to 999 employees had moved to Windows Server 2025 in early 2026, fifteen months after its release.", "short_refs": null, "value": 1.5, "unit": "% of surveyed Japanese companies (50 to 999 employees) already migrated to Windows Server 2025", "display_value": "1.5%", "display_label": "Dell Technologies-sponsored survey, February 2026", "display_hook": null, "row_label": "Dell-sponsored survey: already on Windows Server 2025", "publisher_short": null, "geography": "Japan", "period": "2026-02", "population": "Japanese companies with 50 to 999 employees (Dell Technologies-sponsored survey; sample size not stated)", "sample_n": null, "publisher": "Dell Technologies Japan (via Mynavi TECH+)", "source_title": "調査結果から明らかになったWindows Server 2025の利用状況。注目された機能やセキュリティ重視の姿勢に迫る", "source_url": "https://news.mynavi.jp/techplus/kikaku/20260213-4073625/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-02-13", "accessed_at": "2026-10-14", "quote": "Windows Server 2025への移行状況については、「すでに移行済み」がわずか1.5%、「現在移行中・検証中」が4.4%にとどまる。", "locator": "Fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "dell-japan-2026-windows-server-2025-migration-status", "history": [], "notes": "Dell Technologies-sponsored survey report '「勤務先サーバの利用状況とWindows Server 2025」に関する調査レポート' summarised in a sponsored Mynavi TECH+ article (提供：デル・テクノロジーズ); fieldwork dates and sample size are not stated and the full report is behind a registration form. Manufacturer label: vendor-sponsored survey. Raw: mynavi-dell-2026-02-13-ws2025-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#dell-japan-2026-02-13-windows-server-2025-already-migrated-1-5pct-of-companies", "citation_text": "1.5% of Japanese companies with 50 to 999 employees had already migrated to Windows Server 2025 in early 2026, fifteen months after its release, in a Dell Technologies-sponsored survey (Dell Technologies, 2026). Source: Dell Technologies Japan (via Mynavi TECH+), \"調査結果から明らかになったWindows Server 2025の利用状況。注目された機能やセキュリティ重視の姿勢に迫る\" (https://news.mynavi.jp/techplus/kikaku/20260213-4073625/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#dell-japan-2026-02-13-windows-server-2025-already-migrated-1-5pct-of-companies." }, { "id": "dell-japan-2026-02-13-windows-server-2025-migrating-or-validating-4-4pct-of-companies", "family": "next-versions-adoption", "statement": "4.4% of Japanese companies with 50 to 999 employees were migrating to or validating Windows Server 2025 in early 2026, in a Dell Technologies-sponsored survey (Dell Technologies, 2026).", "short_statement": null, "short_refs": null, "value": 4.4, "unit": "% of surveyed Japanese companies (50 to 999 employees) migrating to or validating Windows Server 2025", "display_value": "4.4%", "display_label": "", "display_hook": null, "row_label": "Dell-sponsored survey: migrating to or validating Windows Server 2025", "publisher_short": null, "geography": "Japan", "period": "2026-02", "population": "Japanese companies with 50 to 999 employees (Dell Technologies-sponsored survey; sample size not stated)", "sample_n": null, "publisher": "Dell Technologies Japan (via Mynavi TECH+)", "source_title": "調査結果から明らかになったWindows Server 2025の利用状況。注目された機能やセキュリティ重視の姿勢に迫る", "source_url": "https://news.mynavi.jp/techplus/kikaku/20260213-4073625/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-02-13", "accessed_at": "2026-10-14", "quote": "「現在移行中・検証中」が4.4%にとどまる。", "locator": "Fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "dell-japan-2026-windows-server-2025-migration-status", "history": [], "notes": "Dell Technologies-sponsored survey report '「勤務先サーバの利用状況とWindows Server 2025」に関する調査レポート' summarised in a sponsored Mynavi TECH+ article (提供：デル・テクノロジーズ); fieldwork dates and sample size are not stated and the full report is behind a registration form. Manufacturer label: vendor-sponsored survey. Raw: mynavi-dell-2026-02-13-ws2025-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#dell-japan-2026-02-13-windows-server-2025-migrating-or-validating-4-4pct-of-companies", "citation_text": "4.4% of Japanese companies with 50 to 999 employees were migrating to or validating Windows Server 2025 in early 2026, in a Dell Technologies-sponsored survey (Dell Technologies, 2026). Source: Dell Technologies Japan (via Mynavi TECH+), \"調査結果から明らかになったWindows Server 2025の利用状況。注目された機能やセキュリティ重視の姿勢に迫る\" (https://news.mynavi.jp/techplus/kikaku/20260213-4073625/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#dell-japan-2026-02-13-windows-server-2025-migrating-or-validating-4-4pct-of-companies." }, { "id": "dell-japan-2026-02-13-windows-server-2025-planning-or-considering-migration-51-5pct-no-plan-25pct", "family": "next-versions-adoption", "statement": "51.5% of Japanese companies with 50 to 999 employees planned or were considering a Windows Server 2025 migration in early 2026 and 25.0% had no plan, in a Dell Technologies-sponsored survey (Dell Technologies, 2026).", "short_statement": null, "short_refs": null, "value": 51.5, "unit": "% of surveyed Japanese companies (50 to 999 employees) planning or considering Windows Server 2025 migration", "display_value": "51.5% planning or considering; 25.0% no plan", "display_label": "", "display_hook": null, "row_label": "Dell-sponsored survey: planning or considering; no plan", "publisher_short": null, "geography": "Japan", "period": "2026-02", "population": "Japanese companies with 50 to 999 employees (Dell Technologies-sponsored survey; sample size not stated)", "sample_n": null, "publisher": "Dell Technologies Japan (via Mynavi TECH+)", "source_title": "調査結果から明らかになったWindows Server 2025の利用状況。注目された機能やセキュリティ重視の姿勢に迫る", "source_url": "https://news.mynavi.jp/techplus/kikaku/20260213-4073625/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-02-13", "accessed_at": "2026-10-14", "quote": "ただし移行開始予定があったり移行時期を検討中だったりする企業は計51.5%に達し、「移行予定はない」（25.0%）を大きく上回っていた。", "locator": "Fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "dell-japan-2026-windows-server-2025-migration-status", "history": [], "notes": "Dell Technologies-sponsored survey report '「勤務先サーバの利用状況とWindows Server 2025」に関する調査レポート' summarised in a sponsored Mynavi TECH+ article (提供：デル・テクノロジーズ); fieldwork dates and sample size are not stated and the full report is behind a registration form. Manufacturer label: vendor-sponsored survey. Raw: mynavi-dell-2026-02-13-ws2025-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#dell-japan-2026-02-13-windows-server-2025-planning-or-considering-migration-51-5pct-no-plan-25pct", "citation_text": "51.5% of Japanese companies with 50 to 999 employees planned or were considering a Windows Server 2025 migration in early 2026 and 25.0% had no plan, in a Dell Technologies-sponsored survey (Dell Technologies, 2026). Source: Dell Technologies Japan (via Mynavi TECH+), \"調査結果から明らかになったWindows Server 2025の利用状況。注目された機能やセキュリティ重視の姿勢に迫る\" (https://news.mynavi.jp/techplus/kikaku/20260213-4073625/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#dell-japan-2026-02-13-windows-server-2025-planning-or-considering-migration-51-5pct-no-plan-25pct." }, { "id": "dell-japan-2026-02-13-hotpatching-most-anticipated-windows-server-2025-feature-51-5pct", "family": "next-versions-adoption", "statement": "51.5% of Japanese companies with 50 to 999 employees named reboot-free hotpatching as the Windows Server 2025 feature they most looked forward to in early 2026, ahead of Active Directory improvements (32.4%) (Dell Technologies, 2026).", "short_statement": null, "short_refs": null, "value": 51.5, "unit": "% of surveyed Japanese companies (50 to 999 employees) naming hotpatching as the most anticipated feature", "display_value": "51.5%", "display_label": "Dell Technologies-sponsored survey, February 2026", "display_hook": null, "row_label": "Dell-sponsored survey: hotpatching the most anticipated feature", "publisher_short": null, "geography": "Japan", "period": "2026-02", "population": "Japanese companies with 50 to 999 employees (Dell Technologies-sponsored survey; sample size not stated)", "sample_n": null, "publisher": "Dell Technologies Japan (via Mynavi TECH+)", "source_title": "調査結果から明らかになったWindows Server 2025の利用状況。注目された機能やセキュリティ重視の姿勢に迫る", "source_url": "https://news.mynavi.jp/techplus/kikaku/20260213-4073625/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-02-13", "accessed_at": "2026-10-14", "quote": "Windows Server 2025の新機能で最も注目されたのは、「再起動不要でセキュリティ更新プログラムを適用できるホットパッチ機能」（51.5%）だ。", "locator": "Fifth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Dell Technologies-sponsored survey report '「勤務先サーバの利用状況とWindows Server 2025」に関する調査レポート' summarised in a sponsored Mynavi TECH+ article (提供：デル・テクノロジーズ); fieldwork dates and sample size are not stated and the full report is behind a registration form. Manufacturer label: vendor-sponsored survey. Raw: mynavi-dell-2026-02-13-ws2025-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#dell-japan-2026-02-13-hotpatching-most-anticipated-windows-server-2025-feature-51-5pct", "citation_text": "51.5% of Japanese companies with 50 to 999 employees named reboot-free hotpatching as the Windows Server 2025 feature they most looked forward to in early 2026, ahead of Active Directory improvements (32.4%) (Dell Technologies, 2026). Source: Dell Technologies Japan (via Mynavi TECH+), \"調査結果から明らかになったWindows Server 2025の利用状況。注目された機能やセキュリティ重視の姿勢に迫る\" (https://news.mynavi.jp/techplus/kikaku/20260213-4073625/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#dell-japan-2026-02-13-hotpatching-most-anticipated-windows-server-2025-feature-51-5pct." }, { "id": "techzine-2026-09-17-restates-dell-smb-survey-as-more-than-half-still-considering-windows-server-2025", "family": "next-versions-adoption", "statement": "More than half of SMBs were 'still considering' a move to Windows Server 2025, Techzine wrote in September 2026, restating the Dell-sponsored Japanese survey's 51.5% 'planning or considering' figure without naming the surveyor or the country (Techzine, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "restatement (no new figure)", "display_value": "'more than half still considering'", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (as presented; the survey is Japanese)", "period": "2026-09-17", "population": "Readers of Techzine; underlying survey: Japanese companies with 50 to 999 employees", "sample_n": null, "publisher": "Techzine", "source_title": "Windows Server 2022 will lose mainstream support next month", "source_url": "https://www.techzine.eu/news/applications/144342/windows-server-2022-will-lose-mainstream-support-next-month/", "source_type": "secondary", "source_access": "open", "published_at": "2026-09-17", "accessed_at": "2026-10-14", "quote": "A survey of SMBs found that 1.5 percent had migrated and 4.4 percent were migrating or validating. More than half indicated they were still considering the move.", "locator": "Fourth paragraph (Berry Zwets, 17 September 2026, updated 24 September 2026); links to news.mynavi.jp/techplus/kikaku/20260213-4073625/", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Drift: 51.5% 'planning to start or considering the timing' becomes 'more than half still considering'; the 25.0% with no plan is dropped; the Dell sponsorship and the Japanese 50-to-999-employee population are not mentioned. Context in the same article: Windows Server 2022 mainstream support ended 13 October 2026 (lifecycle-dates-esu family). Raw: techzine-2026-09-17-ws2022-mainstream.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techzine-2026-09-17-restates-dell-smb-survey-as-more-than-half-still-considering-windows-server-2025", "citation_text": "More than half of SMBs were 'still considering' a move to Windows Server 2025, Techzine wrote in September 2026, restating the Dell-sponsored Japanese survey's 51.5% 'planning or considering' figure without naming the surveyor or the country (Techzine, 2026). Source: Techzine, \"Windows Server 2022 will lose mainstream support next month\" (https://www.techzine.eu/news/applications/144342/windows-server-2022-will-lose-mainstream-support-next-month/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techzine-2026-09-17-restates-dell-smb-survey-as-more-than-half-still-considering-windows-server-2025." }, { "id": "servnet-2026-09-19-uk-public-bodies-naming-windows-server-2016-72-9pct-of-70-foi-2024-25", "family": "next-versions-adoption", "statement": "72.9% of the 70 UK public bodies that named their Windows Server releases in 2024-25 Freedom of Information answers listed Windows Server 2016, and 74.3% listed 2016 or older (Servnet, 2026).", "short_statement": "**72.9%** of 70 UK public bodies that named their server versions listed Windows Server 2016, in 2024-25 Freedom of Information answers.", "short_refs": null, "value": 72.9, "unit": "% of UK public bodies naming Windows Server releases in FOI answers (2024-25) that listed Windows Server 2016", "display_value": "72.9% (51 of 70)", "display_label": "Servnet coding of FOI answers, 70 bodies, published September 2026", "display_hook": null, "row_label": "2024-25, 70 bodies: Windows Server 2016", "publisher_short": null, "geography": "United Kingdom (public bodies answering FOI requests)", "period": "2024-11 to 2025-07", "population": "UK public bodies that named at least one Windows Server release in FOI answers (70 of 223 asked)", "sample_n": 70, "publisher": "Servnet Research (Servnet Limited)", "source_title": "Windows Server 2016 end of life in the UK public sector, 2026", "source_url": "https://www.servnetuk.com/research/windows-server-2016-end-of-life-uk-public-sector-2026", "source_type": "secondary", "source_access": "open", "published_at": "2026-09-19", "accessed_at": "2026-10-14", "quote": "Windows Server 2016: 51 of 70 (72.9%) bodies that named Windows Server releases in 2024-25 listed it, and 52 (74.3%) listed 2016 or older.", "locator": "Key findings, first bullet; table 'Windows Server releases named, 2024-25'", "derived": false, "formula": null, "headline": false, "series": "servnet-uk-public-bodies-windows-server-2016-presence", "history": [], "notes": "Servnet (a UK IT infrastructure vendor) coded Freedom of Information answers published online by UK public bodies; 2024-25 base: 70 of 223 bodies that named at least one Windows Server release (97 answered with the family only, 56 withheld). The page states the bodies are 'not a random sample' and that naming a release means it exists somewhere in the estate, not how many servers run it. Shares sum to more than 100% because bodies run several releases. Published and updated 19 September 2026. Raw: servnet-2026-09-19-ws2016-uk-public-sector.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#servnet-2026-09-19-uk-public-bodies-naming-windows-server-2016-72-9pct-of-70-foi-2024-25", "citation_text": "72.9% of the 70 UK public bodies that named their Windows Server releases in 2024-25 Freedom of Information answers listed Windows Server 2016, and 74.3% listed 2016 or older (Servnet, 2026). Source: Servnet Research (Servnet Limited), \"Windows Server 2016 end of life in the UK public sector, 2026\" (https://www.servnetuk.com/research/windows-server-2016-end-of-life-uk-public-sector-2026). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#servnet-2026-09-19-uk-public-bodies-naming-windows-server-2016-72-9pct-of-70-foi-2024-25." }, { "id": "servnet-2026-09-19-uk-public-bodies-naming-windows-server-2012-or-older-21-4pct-of-70-foi-2024-25", "family": "next-versions-adoption", "statement": "21.4% of the 70 UK public bodies that named their Windows Server releases in 2024-25 FOI answers still listed a release older than 2016 (Windows Server 2012 R2 or earlier), all past end of extended support (Servnet, 2026).", "short_statement": null, "short_refs": null, "value": 21.4, "unit": "% of UK public bodies naming Windows Server releases in FOI answers (2024-25) that listed Windows Server 2012 R2 or earlier", "display_value": "21.4% (15 of 70)", "display_label": "", "display_hook": null, "row_label": "2024-25: Windows Server 2012 R2 or older", "publisher_short": null, "geography": "United Kingdom (public bodies answering FOI requests)", "period": "2024-11 to 2025-07", "population": "UK public bodies that named at least one Windows Server release in FOI answers", "sample_n": 70, "publisher": "Servnet Research (Servnet Limited)", "source_title": "Windows Server 2016 end of life in the UK public sector, 2026", "source_url": "https://www.servnetuk.com/research/windows-server-2016-end-of-life-uk-public-sector-2026", "source_type": "secondary", "source_access": "open", "published_at": "2026-09-19", "accessed_at": "2026-10-14", "quote": "Older releases: 15 of 70 (21.4%) bodies named a release older than 2016 (Windows Server 2012 R2 or earlier), all past the end of extended support", "locator": "Key findings, second bullet; table row 'Windows Server 2012 / 2012 R2 | 15 of 70 | 21.4%'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Servnet (a UK IT infrastructure vendor) coded Freedom of Information answers published online by UK public bodies; 2024-25 base: 70 of 223 bodies that named at least one Windows Server release (97 answered with the family only, 56 withheld). The page states the bodies are 'not a random sample' and that naming a release means it exists somewhere in the estate, not how many servers run it. Shares sum to more than 100% because bodies run several releases. Published and updated 19 September 2026. Raw: servnet-2026-09-19-ws2016-uk-public-sector.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#servnet-2026-09-19-uk-public-bodies-naming-windows-server-2012-or-older-21-4pct-of-70-foi-2024-25", "citation_text": "21.4% of the 70 UK public bodies that named their Windows Server releases in 2024-25 FOI answers still listed a release older than 2016 (Windows Server 2012 R2 or earlier), all past end of extended support (Servnet, 2026). Source: Servnet Research (Servnet Limited), \"Windows Server 2016 end of life in the UK public sector, 2026\" (https://www.servnetuk.com/research/windows-server-2016-end-of-life-uk-public-sector-2026). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#servnet-2026-09-19-uk-public-bodies-naming-windows-server-2012-or-older-21-4pct-of-70-foi-2024-25." }, { "id": "servnet-2026-09-19-uk-public-bodies-naming-windows-server-2019-81-4pct-and-2022-58-6pct-foi-2024-25", "family": "next-versions-adoption", "statement": "81.4% of the 70 UK public bodies that named their Windows Server releases in 2024-25 FOI answers listed Windows Server 2019 and 58.6% listed Windows Server 2022 (Servnet, 2026).", "short_statement": null, "short_refs": null, "value": 81.4, "unit": "% of UK public bodies naming Windows Server releases in FOI answers (2024-25) that listed Windows Server 2019", "display_value": "81.4% (2019), 58.6% (2022)", "display_label": "", "display_hook": null, "row_label": "2024-25: Windows Server 2019; 2022", "publisher_short": null, "geography": "United Kingdom (public bodies answering FOI requests)", "period": "2024-11 to 2025-07", "population": "UK public bodies that named at least one Windows Server release in FOI answers", "sample_n": 70, "publisher": "Servnet Research (Servnet Limited)", "source_title": "Windows Server 2016 end of life in the UK public sector, 2026", "source_url": "https://www.servnetuk.com/research/windows-server-2016-end-of-life-uk-public-sector-2026", "source_type": "secondary", "source_access": "open", "published_at": "2026-09-19", "accessed_at": "2026-10-14", "quote": "Windows Server 2019 | 57 of 70 | 81.4% | Windows Server 2022 | 41 of 70 | 58.6% |", "locator": "Table 'Windows Server releases named, 2024-25', rows 2019 and 2022", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Servnet (a UK IT infrastructure vendor) coded Freedom of Information answers published online by UK public bodies; 2024-25 base: 70 of 223 bodies that named at least one Windows Server release (97 answered with the family only, 56 withheld). The page states the bodies are 'not a random sample' and that naming a release means it exists somewhere in the estate, not how many servers run it. Shares sum to more than 100% because bodies run several releases. Published and updated 19 September 2026. Raw: servnet-2026-09-19-ws2016-uk-public-sector.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#servnet-2026-09-19-uk-public-bodies-naming-windows-server-2019-81-4pct-and-2022-58-6pct-foi-2024-25", "citation_text": "81.4% of the 70 UK public bodies that named their Windows Server releases in 2024-25 FOI answers listed Windows Server 2019 and 58.6% listed Windows Server 2022 (Servnet, 2026). Source: Servnet Research (Servnet Limited), \"Windows Server 2016 end of life in the UK public sector, 2026\" (https://www.servnetuk.com/research/windows-server-2016-end-of-life-uk-public-sector-2026). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#servnet-2026-09-19-uk-public-bodies-naming-windows-server-2019-81-4pct-and-2022-58-6pct-foi-2024-25." }, { "id": "servnet-2026-09-19-uk-public-bodies-naming-windows-server-2025-fewer-than-5-of-70-foi-2024-25", "family": "next-versions-adoption", "statement": "Fewer than 5 of the 70 UK public bodies that named their Windows Server releases in 2024-25 FOI answers listed Windows Server 2025, a count Servnet suppressed as too small to publish (Servnet, 2026).", "short_statement": null, "short_refs": null, "value": null, "unit": "UK public bodies listing Windows Server 2025 (suppressed, fewer than 5 of 70)", "display_value": "fewer than 5 of 70", "display_label": "", "display_hook": null, "row_label": "2024-25: Windows Server 2025", "publisher_short": null, "geography": "United Kingdom (public bodies answering FOI requests)", "period": "2024-11 to 2025-07", "population": "UK public bodies that named at least one Windows Server release in FOI answers", "sample_n": 70, "publisher": "Servnet Research (Servnet Limited)", "source_title": "Windows Server 2016 end of life in the UK public sector, 2026", "source_url": "https://www.servnetuk.com/research/windows-server-2016-end-of-life-uk-public-sector-2026", "source_type": "secondary", "source_access": "open", "published_at": "2026-09-19", "accessed_at": "2026-10-14", "quote": "Windows Server 2025 | fewer than 5 | : |", "locator": "Table 'Windows Server releases named, 2024-25', last row", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Servnet (a UK IT infrastructure vendor) coded Freedom of Information answers published online by UK public bodies; 2024-25 base: 70 of 223 bodies that named at least one Windows Server release (97 answered with the family only, 56 withheld). The page states the bodies are 'not a random sample' and that naming a release means it exists somewhere in the estate, not how many servers run it. Shares sum to more than 100% because bodies run several releases. Published and updated 19 September 2026. Raw: servnet-2026-09-19-ws2016-uk-public-sector.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#servnet-2026-09-19-uk-public-bodies-naming-windows-server-2025-fewer-than-5-of-70-foi-2024-25", "citation_text": "Fewer than 5 of the 70 UK public bodies that named their Windows Server releases in 2024-25 FOI answers listed Windows Server 2025, a count Servnet suppressed as too small to publish (Servnet, 2026). Source: Servnet Research (Servnet Limited), \"Windows Server 2016 end of life in the UK public sector, 2026\" (https://www.servnetuk.com/research/windows-server-2016-end-of-life-uk-public-sector-2026). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#servnet-2026-09-19-uk-public-bodies-naming-windows-server-2025-fewer-than-5-of-70-foi-2024-25." }, { "id": "servnet-2026-09-19-uk-public-bodies-naming-windows-server-2016-61-9pct-of-21-foi-2023-24", "family": "next-versions-adoption", "statement": "61.9% of the 21 UK public bodies that named their Windows Server releases in 2023-24 FOI answers listed Windows Server 2016, and 42.9% listed Windows Server 2012 or 2012 R2 (Servnet, 2026).", "short_statement": null, "short_refs": null, "value": 61.9, "unit": "% of UK public bodies naming Windows Server releases in FOI answers (2023-24) that listed Windows Server 2016", "display_value": "61.9% (13 of 21)", "display_label": "", "display_hook": null, "row_label": "2023-24, 21 bodies: Windows Server 2016", "publisher_short": null, "geography": "United Kingdom (public bodies answering FOI requests)", "period": "2023-08 to 2024-01", "population": "UK public bodies that named at least one Windows Server release in 2023-24 FOI answers (21 of 84 asked)", "sample_n": 21, "publisher": "Servnet Research (Servnet Limited)", "source_title": "Windows Server 2016 end of life in the UK public sector, 2026", "source_url": "https://www.servnetuk.com/research/windows-server-2016-end-of-life-uk-public-sector-2026", "source_type": "secondary", "source_access": "open", "published_at": "2026-09-19", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 / 2012 R2: 9 of 21, 42.9%; Windows Server 2016: 13 of 21, 61.9%; Windows Server 2019: 16 of 21, 76.2%; Windows Server 2022: 6 of 21, 28.6%", "locator": "Table 'Windows Server releases named, 2023-24' (values as listed; the quote joins the table rows)", "derived": false, "formula": null, "headline": false, "series": "servnet-uk-public-bodies-windows-server-2016-presence", "history": [], "notes": "Servnet (a UK IT infrastructure vendor) coded Freedom of Information answers published online by UK public bodies; 2024-25 base: 70 of 223 bodies that named at least one Windows Server release (97 answered with the family only, 56 withheld). The page states the bodies are 'not a random sample' and that naming a release means it exists somewhere in the estate, not how many servers run it. Shares sum to more than 100% because bodies run several releases. Published and updated 19 September 2026. Raw: servnet-2026-09-19-ws2016-uk-public-sector.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#servnet-2026-09-19-uk-public-bodies-naming-windows-server-2016-61-9pct-of-21-foi-2023-24", "citation_text": "61.9% of the 21 UK public bodies that named their Windows Server releases in 2023-24 FOI answers listed Windows Server 2016, and 42.9% listed Windows Server 2012 or 2012 R2 (Servnet, 2026). Source: Servnet Research (Servnet Limited), \"Windows Server 2016 end of life in the UK public sector, 2026\" (https://www.servnetuk.com/research/windows-server-2016-end-of-life-uk-public-sector-2026). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#servnet-2026-09-19-uk-public-bodies-naming-windows-server-2016-61-9pct-of-21-foi-2023-24." }, { "id": "microsoft-ignite-2024-11-19-azure-local-generally-available-replaces-azure-stack-hci", "family": "next-versions-adoption", "statement": "Azure Local, Microsoft's Azure Arc-enabled hybrid infrastructure platform that replaced Azure Stack HCI and the Azure Stack family, became generally available at Ignite on 19 November 2024 (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "general availability date", "display_value": "19 November 2024", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2024-11-19", "population": "Azure Stack HCI customers (auto-upgraded) and new Azure Local customers", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Ignite 2024 Book of News", "source_url": "https://news.microsoft.com/ignite-2024-book-of-news/", "source_type": "primary", "source_access": "open", "published_at": "2024-11-19", "accessed_at": "2026-10-14", "quote": "As part of this expansion Azure Local, a new, cloud-controlled, hybrid infrastructure platform enabled by Azure Arc, is now generally available.", "locator": "Section 3.3.1 'Azure expands adaptive cloud, introduces Azure Local infrastructure solution'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Microsoft published no Azure Local customer or node count at Ignite 2024 or 2025 (both Books of News saved) or on earnings calls (nine transcripts saved). Same section: 'existing Azure Stack HCI customers will automatically upgrade to Azure Local'. Raw: ms-ignite-2024-book-of-news.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-ignite-2024-11-19-azure-local-generally-available-replaces-azure-stack-hci", "citation_text": "Azure Local, Microsoft's Azure Arc-enabled hybrid infrastructure platform that replaced Azure Stack HCI and the Azure Stack family, became generally available at Ignite on 19 November 2024 (Microsoft, 2024). Source: Microsoft, \"Microsoft Ignite 2024 Book of News\" (https://news.microsoft.com/ignite-2024-book-of-news/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-ignite-2024-11-19-azure-local-generally-available-replaces-azure-stack-hci." }, { "id": "microsoft-ignite-2024-11-19-azure-management-tools-no-additional-cost-for-windows-server-2016-to-2025-software-assurance-customers", "family": "next-versions-adoption", "statement": "$0 additional cost is what Microsoft announced at Ignite 2024 for Azure Update Manager, Azure Policy guest configuration, change tracking and other Azure management tools on Windows Server 2016, 2019, 2022 and 2025 for Software Assurance or subscription customers (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 0, "unit": "USD additional cost for Azure management tools via Azure Arc (Software Assurance or subscription customers)", "display_value": "no additional cost", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2024-11-19", "population": "Windows Server Software Assurance or active subscription customers", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft Ignite 2024 Book of News", "source_url": "https://news.microsoft.com/ignite-2024-book-of-news/", "source_type": "primary", "source_access": "open", "published_at": "2024-11-19", "accessed_at": "2026-10-14", "quote": "At no additional cost, Windows Server Software Assurance or active subscription customers can access Azure management tools like Azure Update Manager, Azure Policy Guest Configuration, Disaster Recovery, Change Tracking and Inventory and more.", "locator": "Section 3.3.1, last paragraph ('new features to customers on Windows Server versions 2016, 2019, 2022 and 2025')", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The May 2026 Arc hotpatch post lists the same tools as 'included for no additional costs with Windows Server Software Assurance or Extended Security Updates'. Raw: ms-ignite-2024-book-of-news.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-ignite-2024-11-19-azure-management-tools-no-additional-cost-for-windows-server-2016-to-2025-software-assurance-customers", "citation_text": "$0 additional cost is what Microsoft announced at Ignite 2024 for Azure Update Manager, Azure Policy guest configuration, change tracking and other Azure management tools on Windows Server 2016, 2019, 2022 and 2025 for Software Assurance or subscription customers (Microsoft, 2024). Source: Microsoft, \"Microsoft Ignite 2024 Book of News\" (https://news.microsoft.com/ignite-2024-book-of-news/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-ignite-2024-11-19-azure-management-tools-no-additional-cost-for-windows-server-2016-to-2025-software-assurance-customers." }, { "id": "microsoft-azure-blog-2022-02-07-more-than-60pct-of-azure-customer-compute-cores-are-linux", "family": "next-versions-adoption", "statement": "60%+ of Azure customer compute cores were Linux-based in February 2022, with Linux virtual-machine cores growing faster than Windows ones, by Microsoft's own statement (Microsoft, 2022).", "short_statement": null, "short_refs": null, "value": 60, "unit": "% of Azure customer compute cores running Linux (Microsoft statement, lower bound)", "display_value": "more than 60%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2022-02", "population": "Azure customer compute cores (Microsoft telemetry)", "sample_n": null, "publisher": "Microsoft", "source_title": "Learn how open source plays a key role in Microsoft's cloud strategy with Inside Azure for IT", "source_url": "https://azure.microsoft.com/en-us/blog/learn-how-open-source-plays-a-key-role-in-microsoft-s-cloud-strategy-with-inside-azure-for-it/", "source_type": "manufacturer", "source_access": "open", "published_at": "2022-02-07", "accessed_at": "2026-10-14", "quote": "more than 60 percent of Azure customer compute cores are Linux-based", "locator": "Opening paragraphs (Erin Chapple; also 'Linux virtual machine (VM) cores are growing faster than those based on Windows')", "derived": false, "formula": null, "headline": false, "series": "azure-customer-cores-running-linux-share", "history": [], "notes": "Microsoft has never published the Windows Server version mix inside Azure; the Linux core share is the only split it states. Fetched via the Azure blog WP API (wp-json/wp/v2/posts/7806); last modified 18 June 2025.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-azure-blog-2022-02-07-more-than-60pct-of-azure-customer-compute-cores-are-linux", "citation_text": "60%+ of Azure customer compute cores were Linux-based in February 2022, with Linux virtual-machine cores growing faster than Windows ones, by Microsoft's own statement (Microsoft, 2022). Source: Microsoft, \"Learn how open source plays a key role in Microsoft's cloud strategy with Inside Azure for IT\" (https://azure.microsoft.com/en-us/blog/learn-how-open-source-plays-a-key-role-in-microsoft-s-cloud-strategy-with-inside-azure-for-it/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-azure-blog-2022-02-07-more-than-60pct-of-azure-customer-compute-cores-are-linux." }, { "id": "microsoft-techcommunity-2024-10-29-over-60pct-of-azure-customer-cores-run-linux", "family": "next-versions-adoption", "statement": "60%+ of Azure customer cores ran Linux-based workloads in October 2024, making Linux 'the most popular operating system on Azure' by Microsoft's own statement (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 60, "unit": "% of Azure customer cores running Linux (Microsoft statement, lower bound)", "display_value": "over 60%", "display_label": "Microsoft Tech Community, Linux and Open Source blog, 29 October 2024", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2024-10", "population": "Azure customer cores (Microsoft telemetry)", "sample_n": null, "publisher": "Microsoft", "source_title": "Announcing availability of AlmaLinux as an endorsed Linux distribution in Azure", "source_url": "https://techcommunity.microsoft.com/blog/linuxandopensourceblog/announcing-availability-of-almalinux-as-an-endorsed-linux-distribution-in-azure/4282201", "source_type": "manufacturer", "source_access": "open", "published_at": "2024-10-29", "accessed_at": "2026-10-14", "quote": "Linux has become the most popular operating system on Azure as over 60% of customer cores run Linux-based workloads.", "locator": "First paragraph", "derived": false, "formula": null, "headline": false, "series": "azure-customer-cores-running-linux-share", "history": [], "notes": "Raw: ms-techcommunity-almalinux-2024-10-4282201.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-techcommunity-2024-10-29-over-60pct-of-azure-customer-cores-run-linux", "citation_text": "60%+ of Azure customer cores ran Linux-based workloads in October 2024, making Linux 'the most popular operating system on Azure' by Microsoft's own statement (Microsoft, 2024). Source: Microsoft, \"Announcing availability of AlmaLinux as an endorsed Linux distribution in Azure\" (https://techcommunity.microsoft.com/blog/linuxandopensourceblog/announcing-availability-of-almalinux-as-an-endorsed-linux-distribution-in-azure/4282201). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-techcommunity-2024-10-29-over-60pct-of-azure-customer-cores-run-linux." }, { "id": "microsoft-opensource-blog-2026-05-18-more-than-two-thirds-of-azure-customer-cores-run-linux", "family": "next-versions-adoption", "statement": "**More than two-thirds** of Azure customer cores ran Linux in May 2026, up from 'more than 60%' in 2022 and 2024, by Microsoft's own statement at Open Source Summit North America (Microsoft, 2026).", "short_statement": "More than **two thirds** of customer cores on Azure, Microsoft's own cloud, ran Linux in May 2026.", "short_refs": null, "value": 66.7, "unit": "% of Azure customer cores running Linux (Microsoft statement, lower bound, two-thirds)", "display_value": "more than two-thirds", "display_label": "Microsoft Open Source Blog, 18 May 2026", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-05", "population": "Azure customer cores (Microsoft telemetry)", "sample_n": null, "publisher": "Microsoft", "source_title": "From open source to agentic systems: Microsoft at Open Source Summit North America 2026", "source_url": "https://opensource.microsoft.com/blog/2026/05/18/from-open-source-to-agentic-systems-microsoft-at-open-source-summit-north-america-2026/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-05-18", "accessed_at": "2026-10-14", "quote": "Today, more than two-thirds of customer cores in Azure run Linux, and the platforms running Microsoft 365, GitHub, and OpenAI's ChatGPT all sit on Linux foundations.", "locator": "Paragraph beginning 'Today, more than two-thirds'", "derived": false, "formula": null, "headline": false, "series": "azure-customer-cores-running-linux-share", "history": [], "notes": "Directions on Microsoft (20 May 2026) and InfoQ restate the two-thirds figure. Value 66.7 is the lower bound of 'more than two-thirds'. Raw: ms-opensource-blog-2026-05-18-oss-summit.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-opensource-blog-2026-05-18-more-than-two-thirds-of-azure-customer-cores-run-linux", "citation_text": "**More than two-thirds** of Azure customer cores ran Linux in May 2026, up from 'more than 60%' in 2022 and 2024, by Microsoft's own statement at Open Source Summit North America (Microsoft, 2026). Source: Microsoft, \"From open source to agentic systems: Microsoft at Open Source Summit North America 2026\" (https://opensource.microsoft.com/blog/2026/05/18/from-open-source-to-agentic-systems-microsoft-at-open-source-summit-north-america-2026/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-opensource-blog-2026-05-18-more-than-two-thirds-of-azure-customer-cores-run-linux." }, { "id": "aws-compute-blog-2018-11-over-57pct-of-windows-workloads-on-aws-2x-next-provider-idc", "family": "next-versions-adoption", "statement": "57%+ of enterprise Windows workloads in the public cloud ran on AWS, twice the next provider, AWS wrote in November 2018 citing IDC, the origin of its 'more Windows than any other cloud' claim (AWS, 2018).", "short_statement": "AWS said in 2018 that it ran more than **57%** of enterprise Windows workloads in the public cloud, citing IDC.", "short_refs": null, "value": 57, "unit": "% of enterprise Windows workloads in the public cloud on AWS (AWS citing IDC)", "display_value": "over 57% (2x the next provider)", "display_label": "AWS Compute Blog, re:Invent 2018 recap, citing IDC", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2018-11", "population": "Enterprise Windows workloads in the public cloud (IDC estimate as cited by AWS; report not named)", "sample_n": null, "publisher": "Amazon Web Services", "source_title": "Windows @ AWS re:Invent 2018", "source_url": "https://aws.amazon.com/blogs/compute/windows-aws-reinvent-2018/", "source_type": "manufacturer", "source_access": "open", "published_at": "2018-11-14", "accessed_at": "2026-10-14", "quote": "More enterprises run Windows workloads today on AWS than any other cloud: according to IDC, it's over 57%, 2X than the next provider.", "locator": "Opening paragraph (Rodney Bozo)", "derived": false, "formula": null, "headline": false, "series": "aws-windows-workload-share-claims", "history": [], "notes": "Manufacturer claim; the IDC report is not named or dated in the post (a July 2019 SIOS summary attributes the 57% to 2017 IDC data). The quote's em dash is rendered as a colon here; the page has an em dash between 'any other cloud' and 'according to IDC'. date read from the page markup. Raw: aws-compute-blog-reinvent-2018.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-compute-blog-2018-11-over-57pct-of-windows-workloads-on-aws-2x-next-provider-idc", "citation_text": "57%+ of enterprise Windows workloads in the public cloud ran on AWS, twice the next provider, AWS wrote in November 2018 citing IDC, the origin of its 'more Windows than any other cloud' claim (AWS, 2018). Source: Amazon Web Services, \"Windows @ AWS re:Invent 2018\" (https://aws.amazon.com/blogs/compute/windows-aws-reinvent-2018/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-compute-blog-2018-11-over-57pct-of-windows-workloads-on-aws-2x-next-provider-idc." }, { "id": "aws-windows-page-2020-06-wayback-nearly-2x-more-windows-server-instances-than-next-largest-cloud-idc", "family": "next-versions-adoption", "statement": "**Nearly 2x** more Windows Server instances than the next largest cloud provider is what AWS claimed to run on its Windows page in June 2020, citing an unnamed IDC report (AWS, 2020).", "short_statement": null, "short_refs": null, "value": 2, "unit": "multiple of the next largest cloud provider's Windows Server instances (AWS citing IDC)", "display_value": "nearly 2x", "display_label": "aws.amazon.com/windows, Wayback Machine capture, 2 June 2020", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2020-06", "population": "Windows Server instances on public clouds (IDC estimate as cited by AWS)", "sample_n": null, "publisher": "Amazon Web Services", "source_title": "Windows on AWS (aws.amazon.com/windows, 2020 version)", "source_url": "https://web.archive.org/web/20200602103711/https://aws.amazon.com/windows/", "source_type": "manufacturer", "source_access": "open", "published_at": "2020-06-02", "accessed_at": "2026-10-14", "quote": "We run nearly 2x more Windows Server instances than the next largest cloud provider, according to an IDC report.", "locator": "Wayback snapshot 20200602103711, section 'Customers have been running Windows workloads on AWS for over a decade'", "derived": false, "formula": null, "headline": false, "series": "aws-windows-workload-share-claims", "history": [], "notes": "The claim has since been removed from aws.amazon.com/windows (October 2026 version saved: aws-windows-page.txt) but survives on AWS's EMEA landing page (pages.awscloud.com/EMEA-WindowsonAWS.html, first Wayback capture 6 August 2021, saved). published_at is the capture date; the page itself is undated. Raw: aws-windows-wayback-2020.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-windows-page-2020-06-wayback-nearly-2x-more-windows-server-instances-than-next-largest-cloud-idc", "citation_text": "**Nearly 2x** more Windows Server instances than the next largest cloud provider is what AWS claimed to run on its Windows page in June 2020, citing an unnamed IDC report (AWS, 2020). Source: Amazon Web Services, \"Windows on AWS (aws.amazon.com/windows, 2020 version)\" (https://web.archive.org/web/20200602103711/https://aws.amazon.com/windows/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-windows-page-2020-06-wayback-nearly-2x-more-windows-server-instances-than-next-largest-cloud-idc." }, { "id": "aws-windows-page-2020-06-wayback-enterprise-customers-using-ec2-for-windows-server-grew-5x-since-2015", "family": "next-versions-adoption", "statement": "5x growth in the number of AWS enterprise customers using Amazon EC2 for Windows Server between 2015 and 2020 is what AWS claimed on its Windows page in June 2020 (AWS, 2020).", "short_statement": null, "short_refs": null, "value": 5, "unit": "multiple growth in AWS enterprise customers using EC2 for Windows Server since 2015 (AWS claim)", "display_value": "5x since 2015", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2015 to 2020-06", "population": "AWS enterprise customers using Amazon EC2 for Windows Server", "sample_n": null, "publisher": "Amazon Web Services", "source_title": "Windows on AWS (aws.amazon.com/windows, 2020 version)", "source_url": "https://web.archive.org/web/20200602103711/https://aws.amazon.com/windows/", "source_type": "manufacturer", "source_access": "open", "published_at": "2020-06-02", "accessed_at": "2026-10-14", "quote": "the number of AWS enterprise customers using Amazon EC2 for Windows Server has grown 5x since 2015.", "locator": "Wayback snapshot 20200602103711, same paragraph as the 2x claim", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Manufacturer claim with no base number. Raw: aws-windows-wayback-2020.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-windows-page-2020-06-wayback-enterprise-customers-using-ec2-for-windows-server-grew-5x-since-2015", "citation_text": "5x growth in the number of AWS enterprise customers using Amazon EC2 for Windows Server between 2015 and 2020 is what AWS claimed on its Windows page in June 2020 (AWS, 2020). Source: Amazon Web Services, \"Windows on AWS (aws.amazon.com/windows, 2020 version)\" (https://web.archive.org/web/20200602103711/https://aws.amazon.com/windows/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-windows-page-2020-06-wayback-enterprise-customers-using-ec2-for-windows-server-grew-5x-since-2015." }, { "id": "aws-windows-page-2023-12-wayback-idc-98pct-reduction-in-unplanned-downtime-moving-microsoft-workloads-to-aws", "family": "next-versions-adoption", "statement": "98% less unplanned downtime, 71% faster deployment and 26% higher developer productivity is what AWS attributed to IDC for customers moving Microsoft workloads to AWS, on its Windows page in December 2023 (AWS, 2023).", "short_statement": null, "short_refs": null, "value": 98, "unit": "% reduction in unplanned downtime claimed for Microsoft workloads moved to AWS (AWS-commissioned IDC study, 2019)", "display_value": "98% less unplanned downtime (per IDC, for AWS)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023-12", "population": "Organisations interviewed for IDC's 2019 AWS-commissioned study 'The Business Value of Efficiently Running High-Performing Windows Workloads in AWS Cloud'", "sample_n": null, "publisher": "Amazon Web Services", "source_title": "Windows on AWS (aws.amazon.com/windows, December 2023 version)", "source_url": "https://web.archive.org/web/20231230160655/https://aws.amazon.com/windows/", "source_type": "manufacturer", "source_access": "open", "published_at": "2023-12-30", "accessed_at": "2026-10-14", "quote": "By moving your Microsoft workloads to AWS, customers can realize a 98% reduction in unplanned downtime, 71% faster deployment, and 26% higher developer productivity, per IDC.", "locator": "Wayback snapshot 20231230160655, section on global infrastructure; the IDC report is named earlier on the page", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor-commissioned analyst study; same page: '5-year cost of operations by 56% and gain 37% lower infrastructure costs, per IDC'. Raw: aws-windows-wayback-2024.txt (snapshot resolved to 30 December 2023).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-windows-page-2023-12-wayback-idc-98pct-reduction-in-unplanned-downtime-moving-microsoft-workloads-to-aws", "citation_text": "98% less unplanned downtime, 71% faster deployment and 26% higher developer productivity is what AWS attributed to IDC for customers moving Microsoft workloads to AWS, on its Windows page in December 2023 (AWS, 2023). Source: Amazon Web Services, \"Windows on AWS (aws.amazon.com/windows, December 2023 version)\" (https://web.archive.org/web/20231230160655/https://aws.amazon.com/windows/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-windows-page-2023-12-wayback-idc-98pct-reduction-in-unplanned-downtime-moving-microsoft-workloads-to-aws." }, { "id": "aws-windows-page-2026-10-trusted-to-run-microsoft-workloads-since-2008-longer-than-anyone-else", "family": "next-versions-adoption", "statement": "18 years (since 2008) is how long AWS says it has run Microsoft workloads, 'longer than anyone else', on its Windows page in October 2026, where the earlier 'nearly 2x more Windows Server instances' claim no longer appears (AWS, 2026).", "short_statement": null, "short_refs": null, "value": 18, "unit": "years AWS has run Microsoft workloads (2008 to 2026, AWS claim)", "display_value": "since 2008", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "AWS marketing claim", "sample_n": null, "publisher": "Amazon Web Services", "source_title": "Windows on AWS", "source_url": "https://aws.amazon.com/windows/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Trusted to run Microsoft workloads since 2008, longer than anyone else", "locator": "Hero section tagline; linked AWS announcement dated 23 October 2008", "derived": true, "formula": "2026 - 2008 = 18 years", "headline": false, "series": "", "history": [], "notes": "published_at is the access date (the page is undated). The 2026 page's quantitative claims are savings figures from an AWS-commissioned ESG study (77% on Windows Server licence costs, 45% on SQL Server). Raw: aws-windows-page.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-windows-page-2026-10-trusted-to-run-microsoft-workloads-since-2008-longer-than-anyone-else", "citation_text": "18 years (since 2008) is how long AWS says it has run Microsoft workloads, 'longer than anyone else', on its Windows page in October 2026, where the earlier 'nearly 2x more Windows Server instances' claim no longer appears (AWS, 2026). Source: Amazon Web Services, \"Windows on AWS\" (https://aws.amazon.com/windows/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-windows-page-2026-10-trusted-to-run-microsoft-workloads-since-2008-longer-than-anyone-else." }, { "id": "aws-windows-page-2026-10-optimization-and-licensing-assessment-customers-save-77pct-on-windows-server-licence-costs", "family": "next-versions-adoption", "statement": "77% savings on Windows Server licence costs and 45% on SQL Server is what AWS claims customers achieve through its Optimization and Licensing Assessment, on its Windows page in October 2026 (AWS, 2026).", "short_statement": null, "short_refs": null, "value": 77, "unit": "% savings on Windows Server licence costs claimed by AWS (Optimization and Licensing Assessment)", "display_value": "77%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "AWS customers using the AWS Optimization and Licensing Assessment (AWS claim, ESG showcase April 2022)", "sample_n": null, "publisher": "Amazon Web Services", "source_title": "Windows on AWS", "source_url": "https://aws.amazon.com/windows/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "customers can save 77% on Windows Server and 45% on SQL Server license costs", "locator": "Section on the AWS Optimization and Licensing Assessment; the figures link to a PDF 'ESG-Showcase-Evolve-OLA-Data-27-Apr-2022'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Manufacturer claim backed by an AWS-commissioned ESG showcase (April 2022); no method on the page. Raw: aws-windows-page.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-windows-page-2026-10-optimization-and-licensing-assessment-customers-save-77pct-on-windows-server-licence-costs", "citation_text": "77% savings on Windows Server licence costs and 45% on SQL Server is what AWS claims customers achieve through its Optimization and Licensing Assessment, on its Windows page in October 2026 (AWS, 2026). Source: Amazon Web Services, \"Windows on AWS\" (https://aws.amazon.com/windows/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#aws-windows-page-2026-10-optimization-and-licensing-assessment-customers-save-77pct-on-windows-server-licence-costs." }, { "id": "google-cloud-blog-2020-12-12-esg-windows-workloads-licensing-and-hardware-cost-reduction-32-to-88pct", "family": "next-versions-adoption", "statement": "32% to 88% lower licensing and hardware costs, depending on workload, is what Google Cloud attributed to an Enterprise Strategy Group study of its customers who moved Windows Server workloads to Google Cloud in December 2020 (Google Cloud, 2020).", "short_statement": null, "short_refs": null, "value": 32, "unit": "% reduction in licensing and hardware costs (lower bound of the 32% to 88% range; Google-commissioned ESG study)", "display_value": "32% to 88%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2020-12", "population": "Google Cloud customers that migrated or modernised Microsoft and Windows Server workloads (ESG economic validation)", "sample_n": null, "publisher": "Google Cloud", "source_title": "Migrating Microsoft workloads to Google Cloud yields results", "source_url": "https://cloud.google.com/blog/topics/windows/migrating-microsoft-workloads-to-google-cloud-yields-results", "source_type": "manufacturer", "source_access": "open", "published_at": "2020-12-12", "accessed_at": "2026-10-14", "quote": "Significantly reduced licensing and hardware costs, from 32% to to 88% depending on workload", "locator": "Section 'ESG quantifies benefits of moving Microsoft workloads to Google Cloud', first bullet (the page's 'to to' typo is in the source)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Google Cloud's newest quantitative Windows Server claim found; its current Windows page (cloud.google.com/windows, saved 2026-10-14) carries no numbers. The page's em dash is rendered as a comma here. Raw: gcp-blog-2020-migrating-microsoft-workloads.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#google-cloud-blog-2020-12-12-esg-windows-workloads-licensing-and-hardware-cost-reduction-32-to-88pct", "citation_text": "32% to 88% lower licensing and hardware costs, depending on workload, is what Google Cloud attributed to an Enterprise Strategy Group study of its customers who moved Windows Server workloads to Google Cloud in December 2020 (Google Cloud, 2020). Source: Google Cloud, \"Migrating Microsoft workloads to Google Cloud yields results\" (https://cloud.google.com/blog/topics/windows/migrating-microsoft-workloads-to-google-cloud-yields-results). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#google-cloud-blog-2020-12-12-esg-windows-workloads-licensing-and-hardware-cost-reduction-32-to-88pct." }, { "id": "google-cloud-blog-2020-12-12-sole-tenant-up-to-32pct-tco-savings-on-520-windows-server-2016-workloads", "family": "next-versions-adoption", "statement": "32% lower three-year total cost of ownership is the maximum Google Cloud modelled for 520 Windows Server 2016 workloads on sole-tenant nodes with bring-your-own-licence, citing an ESG study in December 2020 (Google Cloud, 2020).", "short_statement": null, "short_refs": null, "value": 32, "unit": "% three-year TCO saving (modelled, 520 Windows Server 2016 workloads on Google Cloud sole-tenant nodes with BYOL)", "display_value": "up to 32%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2020-12", "population": "Modelled estate of 520 Windows Server 2016 workloads (ESG model for Google Cloud)", "sample_n": null, "publisher": "Google Cloud", "source_title": "Migrating Microsoft workloads to Google Cloud yields results", "source_url": "https://cloud.google.com/blog/topics/windows/migrating-microsoft-workloads-to-google-cloud-yields-results", "source_type": "manufacturer", "source_access": "open", "published_at": "2020-12-12", "accessed_at": "2026-10-14", "quote": "Google Cloud Sole Tenant up to a 32% TCO savings on a three-year modeled cost of operating 520 Windows Server 2016 workloads (with BYOL)", "locator": "Section 'ESG quantifies benefits', fourth bullet", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor-commissioned model, not a measurement. Raw: gcp-blog-2020-migrating-microsoft-workloads.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#google-cloud-blog-2020-12-12-sole-tenant-up-to-32pct-tco-savings-on-520-windows-server-2016-workloads", "citation_text": "32% lower three-year total cost of ownership is the maximum Google Cloud modelled for 520 Windows Server 2016 workloads on sole-tenant nodes with bring-your-own-licence, citing an ESG study in December 2020 (Google Cloud, 2020). Source: Google Cloud, \"Migrating Microsoft workloads to Google Cloud yields results\" (https://cloud.google.com/blog/topics/windows/migrating-microsoft-workloads-to-google-cloud-yields-results). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#google-cloud-blog-2020-12-12-sole-tenant-up-to-32pct-tco-savings-on-520-windows-server-2016-workloads." }, { "id": "google-cloud-windows-page-2026-10-no-quantitative-windows-server-workload-claim", "family": "next-versions-adoption", "statement": "0 quantitative claims about Windows Server workloads (customer counts, shares or market position) appear on Google Cloud's 'Microsoft and Windows' page as of October 2026, against AWS's '2x' and 'longer than anyone else' claims (Google Cloud, 2026).", "short_statement": null, "short_refs": null, "value": 0, "unit": "quantitative Windows Server workload claims on the page", "display_value": "none", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-10-14", "population": "Google Cloud's Microsoft and Windows landing page", "sample_n": null, "publisher": "Google Cloud", "source_title": "Microsoft and Windows | Google Cloud", "source_url": "https://cloud.google.com/windows", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Run Windows Server on Google Cloud", "locator": "Page heading; a grep of the saved page for percentages, 'million', 'IDC', 'Gartner' or 'Forrester' near Windows claims finds only the 99.999% Spanner availability figure", "derived": true, "formula": "count of sentences on the saved page (gcp-windows.txt, 41,777 characters) that give a number for Windows Server customers, instances or market share", "headline": false, "series": "", "history": [], "notes": "Summary record: Google Cloud makes no counterpart to AWS's share claim. published_at is the access date.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#google-cloud-windows-page-2026-10-no-quantitative-windows-server-workload-claim", "citation_text": "0 quantitative claims about Windows Server workloads (customer counts, shares or market position) appear on Google Cloud's 'Microsoft and Windows' page as of October 2026, against AWS's '2x' and 'longer than anyone else' claims (Google Cloud, 2026). Source: Google Cloud, \"Microsoft and Windows | Google Cloud\" (https://cloud.google.com/windows). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#google-cloud-windows-page-2026-10-no-quantitative-windows-server-workload-claim." }, { "id": "microsoft-lifecycle-windows-server-semi-annual-channel-seven-releases-1709-to-20h2", "family": "next-versions-adoption", "statement": "7 Semi-Annual Channel releases of Windows Server shipped between October 2017 (version 1709) and October 2020 (version 20H2), each supported for about 18 months, before the channel's retirement in August 2022 (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 7, "unit": "Semi-Annual Channel releases of Windows Server", "display_value": "7 releases (1709 to 20H2)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2017-10-17 to 2022-08-09", "population": "Windows Server Semi-Annual Channel releases", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server Semi-Annual Channel - Microsoft Lifecycle", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-semiannual-channel", "source_type": "primary", "source_access": "open", "published_at": "2023-10-12", "accessed_at": "2026-10-14", "quote": "Version 20H2 | 10/20/2020 8:00:00 AM | 8/10/2022 6:59:59 AM | Version 2004 | 5/27/2020 8:00:00 AM | 12/15/2021 6:59:59 AM | Version 1909", "locator": "Table 'Releases' (rows 20H2, 2004, 1909, 1903, 1809, 1803, 1709)", "derived": true, "formula": "count of rows in the 'Releases' table of the lifecycle page = 7", "headline": false, "series": "", "history": [], "notes": "Raw: ms-lifecycle-sac.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-semi-annual-channel-seven-releases-1709-to-20h2", "citation_text": "7 Semi-Annual Channel releases of Windows Server shipped between October 2017 (version 1709) and October 2020 (version 20H2), each supported for about 18 months, before the channel's retirement in August 2022 (Microsoft, 2023). Source: Microsoft, \"Windows Server Semi-Annual Channel - Microsoft Lifecycle\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-semiannual-channel). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-lifecycle-windows-server-semi-annual-channel-seven-releases-1709-to-20h2." }, { "id": "microsoft-learn-servicing-channels-2025-06-ltsc-new-windows-server-release-typically-every-2-3-years", "family": "next-versions-adoption", "statement": "Every 2 to 3 years is the typical cadence of a new Long-Term Servicing Channel release of Windows Server, each with five years of mainstream and five years of extended support, per Microsoft's servicing-channels page (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": null, "unit": "release cadence (years between LTSC releases)", "display_value": "every 2-3 years", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-06-25", "population": "Windows Server Long-Term Servicing Channel releases", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server Servicing Channels", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/servicing-channels-comparison", "source_type": "primary", "source_access": "open", "published_at": "2025-06-25", "accessed_at": "2026-10-14", "quote": "With the Long-Term Servicing Channel, a new major version of Windows Server is typically released every 2-3 years. Users are entitled to five years of mainstream support and five years of extended support.", "locator": "Section 'Long-Term Servicing Channel (LTSC)' (ms.date 2025-06-25)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Actual LTSC gaps: 2016 (Oct 2016), 2019 (Oct 2018), 2022 (Aug 2021), 2025 (Nov 2024): about 2, 3 and 3 years (dates in the lifecycle-dates-esu family). The 10-year support figure is already a reusable id (microsoft-2025-06-esu-overview-windows-server-ltsc-minimum-10-years-support). Raw: ms-learn-servicing-channels.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-servicing-channels-2025-06-ltsc-new-windows-server-release-typically-every-2-3-years", "citation_text": "Every 2 to 3 years is the typical cadence of a new Long-Term Servicing Channel release of Windows Server, each with five years of mainstream and five years of extended support, per Microsoft's servicing-channels page (Microsoft, 2025). Source: Microsoft, \"Windows Server Servicing Channels\" (https://learn.microsoft.com/en-us/windows-server/get-started/servicing-channels-comparison). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-servicing-channels-2025-06-ltsc-new-windows-server-release-typically-every-2-3-years." }, { "id": "microsoft-learn-servicing-channels-2025-06-annual-channel-every-12-months-24-months-support-containers-only", "family": "next-versions-adoption", "statement": "24 months of support (18 mainstream plus 6 extended) and a release about every 12 months define Windows Server's Annual Channel for Containers, the Server Core-only channel that replaced the Semi-Annual Channel in October 2023 (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 24, "unit": "months of support per Annual Channel release", "display_value": "24 months (18 + 6), new release every 12 months", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-06-25", "population": "Windows Server Annual Channel for Containers releases (Software Assurance customers only)", "sample_n": null, "publisher": "Microsoft", "source_title": "Windows Server Servicing Channels", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/servicing-channels-comparison", "source_type": "primary", "source_access": "open", "published_at": "2025-06-25", "accessed_at": "2026-10-14", "quote": "Releases of Windows Server in the Annual Channel typically occur every 12 months. The 24 month support lifecycle for each release is 18 months of mainstream support, plus 6 months of extended support.", "locator": "Section 'Annual Channel (AC)', third paragraph; table 'Key differences'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "First Annual Channel release: version 23H2, 24 October 2023, end of support 24 October 2025 (Lansweeper's EOL page; lifecycle-dates-esu family). Raw: ms-learn-servicing-channels.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-servicing-channels-2025-06-annual-channel-every-12-months-24-months-support-containers-only", "citation_text": "24 months of support (18 mainstream plus 6 extended) and a release about every 12 months define Windows Server's Annual Channel for Containers, the Server Core-only channel that replaced the Semi-Annual Channel in October 2023 (Microsoft, 2025). Source: Microsoft, \"Windows Server Servicing Channels\" (https://learn.microsoft.com/en-us/windows-server/get-started/servicing-channels-comparison). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-servicing-channels-2025-06-annual-channel-every-12-months-24-months-support-containers-only." }, { "id": "microsoft-learn-editions-comparison-2025-05-windows-server-2025-three-editions-standard-datacenter-datacenter-azure-edition", "family": "next-versions-adoption", "statement": "3 editions make up Windows Server 2025 in Microsoft's editions comparison: Standard, Datacenter and Datacenter: Azure Edition, the last being virtual-only and limited to Azure and Azure Local (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 3, "unit": "Windows Server 2025 editions compared by Microsoft", "display_value": "Standard, Datacenter, Datacenter: Azure Edition", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-05-01", "population": "Windows Server 2025 editions (Essentials is sold separately through OEMs and is not in the comparison)", "sample_n": null, "publisher": "Microsoft", "source_title": "Comparison of Windows Server editions", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/editions-comparison", "source_type": "primary", "source_access": "open", "published_at": "2025-05-01", "accessed_at": "2026-10-14", "quote": "Use this article to compare the Standard, Datacenter, and Datacenter: Azure Edition of Windows Server to see which is most appropriate for you.", "locator": "Introduction ('Applies to: Windows Server 2025, 2022, 2019, 2016'; ms.date 2025-05-01, updated 2025-10-01)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The 'editions-comparison-windows-server-2025' URL assumed in the research brief does not exist (404); the comparison lives at editions-comparison for all versions. Raw: ms-learn-editions-comparison.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-editions-comparison-2025-05-windows-server-2025-three-editions-standard-datacenter-datacenter-azure-edition", "citation_text": "3 editions make up Windows Server 2025 in Microsoft's editions comparison: Standard, Datacenter and Datacenter: Azure Edition, the last being virtual-only and limited to Azure and Azure Local (Microsoft, 2025). Source: Microsoft, \"Comparison of Windows Server editions\" (https://learn.microsoft.com/en-us/windows-server/get-started/editions-comparison). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-editions-comparison-2025-05-windows-server-2025-three-editions-standard-datacenter-datacenter-azure-edition." }, { "id": "microsoft-learn-azure-edition-2025-08-datacenter-azure-edition-virtual-only-yearly-updates-two-major-in-first-3-years", "family": "next-versions-adoption", "statement": "2 major product updates in the first 3 years, delivered yearly through Windows Update, distinguish Windows Server Datacenter: Azure Edition, a virtual-only edition for Azure and Azure Local with no on-premises physical installs (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": 2, "unit": "major product updates in the first 3 years of a Datacenter: Azure Edition release", "display_value": "yearly updates; 2 major in the first 3 years; virtual only", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-08-13", "population": "Windows Server 2022 and 2025 Datacenter: Azure Edition", "sample_n": null, "publisher": "Microsoft", "source_title": "What is Azure Edition for Windows Server?", "source_url": "https://learn.microsoft.com/en-us/windows-server/get-started/azure-edition", "source_type": "primary", "source_access": "open", "published_at": "2025-08-13", "accessed_at": "2026-10-14", "quote": "Azure Edition features a Long-Term Servicing Channel (LTSC) and yearly product updates, with two major product updates in the first 3 years.", "locator": "Introduction; table 'Key differences' row 'Operating system environments (OSE) | Physical or virtual | Virtual only' (ms.date 2025-08-13, updated 2026-03-27)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Hotpatch has been included with Datacenter: Azure Edition since Windows Server 2022 at no extra cost (same page and the May 2026 Arc post). Raw fetched via WebFetch; page text in the tool result.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-azure-edition-2025-08-datacenter-azure-edition-virtual-only-yearly-updates-two-major-in-first-3-years", "citation_text": "2 major product updates in the first 3 years, delivered yearly through Windows Update, distinguish Windows Server Datacenter: Azure Edition, a virtual-only edition for Azure and Azure Local with no on-premises physical installs (Microsoft, 2025). Source: Microsoft, \"What is Azure Edition for Windows Server?\" (https://learn.microsoft.com/en-us/windows-server/get-started/azure-edition). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-learn-azure-edition-2025-08-datacenter-azure-edition-virtual-only-yearly-updates-two-major-in-first-3-years." }, { "id": "spiceworks-2019-03-98pct-of-businesses-run-server-hardware-on-premises", "family": "on-premises-and-cloud-share", "statement": "98% of businesses in North America and Europe were running server hardware on-premises in Spiceworks' February 2019 survey of 530 IT decision makers (Spiceworks, 2019).", "short_statement": "**98%** of businesses in North America and Europe ran server hardware on their own premises in 2019 (Spiceworks, 2019).", "short_refs": null, "value": 98, "unit": "% of businesses surveyed by Spiceworks", "display_value": "98%", "display_label": "530 IT decision makers, North America and Europe (Spiceworks State of Servers 2019)", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2019-02", "population": "IT decision makers at businesses in North America and Europe (Spiceworks 2019 State of Servers survey, February 2019)", "sample_n": 530, "publisher": "Spiceworks", "source_title": "The 2019 State of Servers: Executive Summary", "source_url": "https://www.spiceworks.com/marketing/wp-content/uploads/sites/2/2019/03/Spiceworks-2019-State-of-Servers-Executive-Summary.pdf", "source_type": "secondary", "source_access": "open", "published_at": "2019-03-04", "accessed_at": "2026-10-14", "quote": "Spiceworks research shows the reality is 98 percent of businesses are currently running server hardware on-premises.", "locator": "Page 1, introduction (Wayback snapshot 20190817195224)", "derived": false, "formula": null, "headline": false, "series": "spiceworks-on-premises-server-share", "history": [], "notes": "The brief's key-statistic candidate 7. No later Spiceworks edition repeats the question (checked the 2020-2026 State of IT pages); this is the latest published on-premises server share from Spiceworks. Survey of IT buyers in Spiceworks' community (an IT marketplace and network, not a server vendor); the executive summary says 'more than 500', Network World (5 March 2019) and Channel Futures give 530 and a February 2019 fieldwork date. Wayback snapshot 20190817195224 of the PDF. Saved copy: raw/on-premises-and-cloud-share/wayback-spiceworks-2019-state-of-servers-executive-summary.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-03-98pct-of-businesses-run-server-hardware-on-premises", "citation_text": "98% of businesses in North America and Europe were running server hardware on-premises in Spiceworks' February 2019 survey of 530 IT decision makers (Spiceworks, 2019). Source: Spiceworks, \"The 2019 State of Servers: Executive Summary\" (https://www.spiceworks.com/marketing/wp-content/uploads/sites/2/2019/03/Spiceworks-2019-State-of-Servers-Executive-Summary.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-03-98pct-of-businesses-run-server-hardware-on-premises." }, { "id": "spiceworks-2019-03-36pct-plan-to-buy-server-hardware-within-12-months", "family": "on-premises-and-cloud-share", "statement": "36% of organisations planned to buy new server hardware within 12 months, and another 25% within one to two years, in Spiceworks' February 2019 survey of 530 IT decision makers (Spiceworks, 2019).", "short_statement": "**36%** of businesses planned to buy new server hardware within 12 months, in 2019.", "short_refs": null, "value": 36, "unit": "% of organisations surveyed by Spiceworks", "display_value": "36%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2019-02", "population": "IT decision makers at businesses in North America and Europe (Spiceworks 2019 State of Servers survey, February 2019)", "sample_n": 530, "publisher": "Spiceworks", "source_title": "The 2019 State of Servers: Executive Summary", "source_url": "https://www.spiceworks.com/marketing/wp-content/uploads/sites/2/2019/03/Spiceworks-2019-State-of-Servers-Executive-Summary.pdf", "source_type": "secondary", "source_access": "open", "published_at": "2019-03-04", "accessed_at": "2026-10-14", "quote": "36 percent of organizations plan to purchase new server hardware within the next 12 months, and an additional 25 percent plan to buy servers within the next one to two years.", "locator": "Page 1, section 'Server purchase plans'", "derived": false, "formula": null, "headline": false, "series": "spiceworks-2019-server-purchase-timing", "history": [], "notes": "Chart on page 1 (series CSV spiceworks-2019-server-purchase-timing): 20% in the next 6 months (CIO Dive: 'One in five companies plan to buy new server hardware in the next six months'), 16% in 6 to 12 months, 25% in 1 to 2 years, 11% in 2 to 3 years, 14% more than 3 years, 15% no plans. Survey of IT buyers in Spiceworks' community (an IT marketplace and network, not a server vendor); the executive summary says 'more than 500', Network World (5 March 2019) and Channel Futures give 530 and a February 2019 fieldwork date. Wayback snapshot 20190817195224 of the PDF. Saved copy: raw/on-premises-and-cloud-share/wayback-spiceworks-2019-state-of-servers-executive-summary.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-03-36pct-plan-to-buy-server-hardware-within-12-months", "citation_text": "36% of organisations planned to buy new server hardware within 12 months, and another 25% within one to two years, in Spiceworks' February 2019 survey of 530 IT decision makers (Spiceworks, 2019). Source: Spiceworks, \"The 2019 State of Servers: Executive Summary\" (https://www.spiceworks.com/marketing/wp-content/uploads/sites/2/2019/03/Spiceworks-2019-State-of-Servers-Executive-Summary.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-03-36pct-plan-to-buy-server-hardware-within-12-months." }, { "id": "spiceworks-2019-03-enterprises-68pct-plan-to-buy-servers-within-12-months", "family": "on-premises-and-cloud-share", "statement": "68% of enterprises with 1,000 or more employees planned to buy new servers within 12 months in Spiceworks' February 2019 survey, about twice the share of mid-size companies (34%) and small businesses (30%) (Spiceworks, 2019).", "short_statement": null, "short_refs": null, "value": 68, "unit": "% of enterprises (1,000+ employees) surveyed by Spiceworks", "display_value": "68%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2019-02", "population": "IT decision makers at businesses in North America and Europe (Spiceworks 2019 State of Servers survey, February 2019)", "sample_n": 530, "publisher": "Spiceworks", "source_title": "The 2019 State of Servers: Executive Summary", "source_url": "https://www.spiceworks.com/marketing/wp-content/uploads/sites/2/2019/03/Spiceworks-2019-State-of-Servers-Executive-Summary.pdf", "source_type": "secondary", "source_access": "open", "published_at": "2019-03-04", "accessed_at": "2026-10-14", "quote": "68 percent of enterprises (1,000+ employees) plan to buy servers within the next 12 months, compared to 34 percent of mid-size companies (100 to 999 employees), and 30 percent of small businesses (1 to 99 employees).", "locator": "Page 2, first paragraph", "derived": false, "formula": null, "headline": false, "series": "spiceworks-2019-server-purchase-within-12-months-by-company-size", "history": [], "notes": "Survey of IT buyers in Spiceworks' community (an IT marketplace and network, not a server vendor); the executive summary says 'more than 500', Network World (5 March 2019) and Channel Futures give 530 and a February 2019 fieldwork date. Wayback snapshot 20190817195224 of the PDF. Saved copy: raw/on-premises-and-cloud-share/wayback-spiceworks-2019-state-of-servers-executive-summary.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-03-enterprises-68pct-plan-to-buy-servers-within-12-months", "citation_text": "68% of enterprises with 1,000 or more employees planned to buy new servers within 12 months in Spiceworks' February 2019 survey, about twice the share of mid-size companies (34%) and small businesses (30%) (Spiceworks, 2019). Source: Spiceworks, \"The 2019 State of Servers: Executive Summary\" (https://www.spiceworks.com/marketing/wp-content/uploads/sites/2/2019/03/Spiceworks-2019-State-of-Servers-Executive-Summary.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-03-enterprises-68pct-plan-to-buy-servers-within-12-months." }, { "id": "spiceworks-2019-03-small-businesses-30pct-plan-to-buy-servers-within-12-months", "family": "on-premises-and-cloud-share", "statement": "30% of small businesses (1 to 99 employees) planned to buy new servers within 12 months in Spiceworks' February 2019 survey (Spiceworks, 2019).", "short_statement": null, "short_refs": null, "value": 30, "unit": "% of small businesses (1-99 employees) surveyed by Spiceworks", "display_value": "30%", "display_label": "Spiceworks State of Servers 2019, businesses with 1-99 employees", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2019-02", "population": "IT decision makers at businesses in North America and Europe (Spiceworks 2019 State of Servers survey, February 2019)", "sample_n": 530, "publisher": "Spiceworks", "source_title": "The 2019 State of Servers: Executive Summary", "source_url": "https://www.spiceworks.com/marketing/wp-content/uploads/sites/2/2019/03/Spiceworks-2019-State-of-Servers-Executive-Summary.pdf", "source_type": "secondary", "source_access": "open", "published_at": "2019-03-04", "accessed_at": "2026-10-14", "quote": "and 30 percent of small businesses (1 to 99 employees)", "locator": "Page 2, first paragraph", "derived": false, "formula": null, "headline": false, "series": "spiceworks-2019-server-purchase-within-12-months-by-company-size", "history": [], "notes": "The same summary says the smallest businesses are more likely to wait until hardware failure or reliability issues drive them to buy. Survey of IT buyers in Spiceworks' community (an IT marketplace and network, not a server vendor); the executive summary says 'more than 500', Network World (5 March 2019) and Channel Futures give 530 and a February 2019 fieldwork date. Wayback snapshot 20190817195224 of the PDF. Saved copy: raw/on-premises-and-cloud-share/wayback-spiceworks-2019-state-of-servers-executive-summary.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-03-small-businesses-30pct-plan-to-buy-servers-within-12-months", "citation_text": "30% of small businesses (1 to 99 employees) planned to buy new servers within 12 months in Spiceworks' February 2019 survey (Spiceworks, 2019). Source: Spiceworks, \"The 2019 State of Servers: Executive Summary\" (https://www.spiceworks.com/marketing/wp-content/uploads/sites/2/2019/03/Spiceworks-2019-State-of-Servers-Executive-Summary.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-03-small-businesses-30pct-plan-to-buy-servers-within-12-months." }, { "id": "spiceworks-2019-03-nearly-one-third-buy-servers-because-of-server-os-end-of-life", "family": "on-premises-and-cloud-share", "statement": "Nearly one-third of organisations said server operating system end of life, such as Windows Server 2008's on 14 January 2020, was prompting them to buy new servers, in Spiceworks' February 2019 survey (Spiceworks, 2019).", "short_statement": null, "short_refs": null, "value": null, "unit": "share of organisations planning server purchases (stated as 'nearly one-third')", "display_value": "nearly one-third", "display_label": "Spiceworks State of Servers 2019, ahead of Windows Server 2008's January 2020 end of support", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2019-02", "population": "IT decision makers at businesses in North America and Europe (Spiceworks 2019 State of Servers survey, February 2019)", "sample_n": 530, "publisher": "Spiceworks", "source_title": "The 2019 State of Servers: Executive Summary", "source_url": "https://www.spiceworks.com/marketing/wp-content/uploads/sites/2/2019/03/Spiceworks-2019-State-of-Servers-Executive-Summary.pdf", "source_type": "secondary", "source_access": "open", "published_at": "2019-03-04", "accessed_at": "2026-10-14", "quote": "with Microsoft dropping extended support for Windows Server 2008 on January 14, 2020, it's no surprise that server OS end of life is prompting nearly one-third of organizations to buy new servers.", "locator": "Page 2, section 'Server purchase drivers'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Base: organisations planning to buy server hardware. The page-3 chart gives the share by company size but its labels do not extract cleanly, so no single percentage is recorded. Survey of IT buyers in Spiceworks' community (an IT marketplace and network, not a server vendor); the executive summary says 'more than 500', Network World (5 March 2019) and Channel Futures give 530 and a February 2019 fieldwork date. Wayback snapshot 20190817195224 of the PDF. Saved copy: raw/on-premises-and-cloud-share/wayback-spiceworks-2019-state-of-servers-executive-summary.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-03-nearly-one-third-buy-servers-because-of-server-os-end-of-life", "citation_text": "Nearly one-third of organisations said server operating system end of life, such as Windows Server 2008's on 14 January 2020, was prompting them to buy new servers, in Spiceworks' February 2019 survey (Spiceworks, 2019). Source: Spiceworks, \"The 2019 State of Servers: Executive Summary\" (https://www.spiceworks.com/marketing/wp-content/uploads/sites/2/2019/03/Spiceworks-2019-State-of-Servers-Executive-Summary.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-03-nearly-one-third-buy-servers-because-of-server-os-end-of-life." }, { "id": "spiceworks-2019-03-38pct-cite-maintenance-costs-of-aging-hardware", "family": "on-premises-and-cloud-share", "statement": "38% of organisations planning to buy servers cited the maintenance costs of ageing hardware, behind company growth (50%), in Spiceworks' February 2019 survey (Spiceworks, 2019).", "short_statement": null, "short_refs": null, "value": 38, "unit": "% of organisations planning to buy server hardware", "display_value": "38%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2019-02", "population": "IT decision makers at businesses in North America and Europe (Spiceworks 2019 State of Servers survey, February 2019)", "sample_n": 530, "publisher": "Spiceworks", "source_title": "The 2019 State of Servers: Executive Summary", "source_url": "https://www.spiceworks.com/marketing/wp-content/uploads/sites/2/2019/03/Spiceworks-2019-State-of-Servers-Executive-Summary.pdf", "source_type": "secondary", "source_access": "open", "published_at": "2019-03-04", "accessed_at": "2026-10-14", "quote": "company growth (50 percent) is the top reason for new purchases, followed by performance degradation (38 percent), maintenance costs of aging hardware (38 percent), and reliability issues (34 percent).", "locator": "Page 2, section 'Server purchase drivers'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Survey of IT buyers in Spiceworks' community (an IT marketplace and network, not a server vendor); the executive summary says 'more than 500', Network World (5 March 2019) and Channel Futures give 530 and a February 2019 fieldwork date. Wayback snapshot 20190817195224 of the PDF. Saved copy: raw/on-premises-and-cloud-share/wayback-spiceworks-2019-state-of-servers-executive-summary.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-03-38pct-cite-maintenance-costs-of-aging-hardware", "citation_text": "38% of organisations planning to buy servers cited the maintenance costs of ageing hardware, behind company growth (50%), in Spiceworks' February 2019 survey (Spiceworks, 2019). Source: Spiceworks, \"The 2019 State of Servers: Executive Summary\" (https://www.spiceworks.com/marketing/wp-content/uploads/sites/2/2019/03/Spiceworks-2019-State-of-Servers-Executive-Summary.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-03-38pct-cite-maintenance-costs-of-aging-hardware." }, { "id": "vmblog-2019-03-04-spiceworks-72pct-plan-to-buy-server-hardware-within-three-years", "family": "on-premises-and-cloud-share", "statement": "72% of businesses planned to buy new server hardware within three years, as Spiceworks announced its 2019 State of Servers survey of IT buyers in North America and Europe (Spiceworks via VMblog, 2019).", "short_statement": null, "short_refs": null, "value": 72, "unit": "% of businesses surveyed by Spiceworks", "display_value": "72%", "display_label": "Spiceworks State of Servers 2019 announcement", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2019-02", "population": "IT decision makers at businesses in North America and Europe (Spiceworks 2019 State of Servers survey, February 2019)", "sample_n": 530, "publisher": "VMblog (Spiceworks announcement)", "source_title": "Spiceworks Study Shows On-Premises Server Infrastructure Remains Vital to the Workplace", "source_url": "https://vmblog.com/bylines/spiceworks-study-shows-on-premises-server-infrastructure-remains-vital-to-the-workplace/", "source_type": "secondary", "source_access": "open", "published_at": "2019-03-04", "accessed_at": "2026-10-14", "quote": "The results show that 98 percent of businesses currently run on-premises servers, and 72 percent of businesses plan to purchase new server hardware within the next three years.", "locator": "First paragraph", "derived": false, "formula": null, "headline": false, "series": "spiceworks-2019-server-purchase-timing", "history": [], "notes": "VMblog reprints Spiceworks' 4 March 2019 announcement ('today announced'); Spiceworks' own press-release page is not archived. The 72% is consistent with the executive summary chart (20% + 16% + 25% + 11% = 72% within three years). The same text adds that servers were 12% of 2019 hardware budgets. Saved copy: raw/on-premises-and-cloud-share/vmblog-2019-spiceworks-state-of-servers.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#vmblog-2019-03-04-spiceworks-72pct-plan-to-buy-server-hardware-within-three-years", "citation_text": "72% of businesses planned to buy new server hardware within three years, as Spiceworks announced its 2019 State of Servers survey of IT buyers in North America and Europe (Spiceworks via VMblog, 2019). Source: VMblog (Spiceworks announcement), \"Spiceworks Study Shows On-Premises Server Infrastructure Remains Vital to the Workplace\" (https://vmblog.com/bylines/spiceworks-study-shows-on-premises-server-infrastructure-remains-vital-to-the-workplace/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#vmblog-2019-03-04-spiceworks-72pct-plan-to-buy-server-hardware-within-three-years." }, { "id": "networkworld-2019-03-05-restates-spiceworks-os-end-of-life-as-server-2008-the-reason-for-buying", "family": "on-premises-and-cloud-share", "statement": "Nearly one-third of organisations bought new servers because of Windows Server 2008's end of life, as Network World restated Spiceworks' 2019 finding, which named server OS end of life in general with Server 2008 as the example (Network World, 2019).", "short_statement": null, "short_refs": null, "value": null, "unit": "restatement (share stated as 'nearly one-third')", "display_value": "nearly one-third", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2019-02", "population": "IT decision makers at businesses in North America and Europe (Spiceworks 2019 State of Servers survey, February 2019)", "sample_n": 530, "publisher": "Network World", "source_title": "The data center is being reimagined, not disappearing", "source_url": "https://www.networkworld.com/article/967103/the-data-center-is-being-reimagined-not-disappearing.html", "source_type": "secondary", "source_access": "open", "published_at": "2019-03-05", "accessed_at": "2026-10-14", "quote": "Nearly one-third of organizations surveyed said Server 2008 end of life is the reason for purchasing new server hardware.", "locator": "Fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Drift: Spiceworks' executive summary says 'server OS end of life is prompting nearly one-third of organizations to buy new servers', citing Server 2008 as context; Network World narrows the driver to Server 2008 itself. The article is the source of the February 2019 fieldwork date and the 530-respondent sample. Saved copy: raw/on-premises-and-cloud-share/networkworld-2019-spiceworks-servers.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2019-03-05-restates-spiceworks-os-end-of-life-as-server-2008-the-reason-for-buying", "citation_text": "Nearly one-third of organisations bought new servers because of Windows Server 2008's end of life, as Network World restated Spiceworks' 2019 finding, which named server OS end of life in general with Server 2008 as the example (Network World, 2019). Source: Network World, \"The data center is being reimagined, not disappearing\" (https://www.networkworld.com/article/967103/the-data-center-is-being-reimagined-not-disappearing.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2019-03-05-restates-spiceworks-os-end-of-life-as-server-2008-the-reason-for-buying." }, { "id": "eweek-2016-spiceworks-2016-state-of-it-servers-19pct-of-hardware-budgets", "family": "on-premises-and-cloud-share", "statement": "19% of business hardware budgets for 2016 were planned for servers, behind desktops at 21%, in Spiceworks' 2016 State of IT survey as eWeek reported it (Spiceworks via eWeek, 2016).", "short_statement": null, "short_refs": null, "value": 19, "unit": "% of planned hardware budget (average)", "display_value": "19%", "display_label": "", "display_hook": null, "row_label": "2016 (via eWeek)", "publisher_short": null, "geography": "North America and Europe", "period": "2016", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": null, "publisher": "eWeek (Spiceworks survey)", "source_title": "10 Eye-Opening Findings From Spiceworks' 2016 State of IT Report", "source_url": "https://www.eweek.com/it-management/10-eye-opening-findings-from-spiceworks-2016-state-of-it-report/", "source_type": "secondary", "source_access": "open", "published_at": "2016-04-20", "accessed_at": "2026-10-14", "quote": "21 percent of those funds will go to desktops and another 19 percent to servers.", "locator": "Slide/section on hardware budgets", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-share-of-hardware-budget", "history": [], "notes": "Spiceworks' own 2016 report page was not recovered; eWeek's page carries a 2016-04-20 timestamp although the report was released in late 2015. Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/eweek-2015-spiceworks-2016-state-of-it.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#eweek-2016-spiceworks-2016-state-of-it-servers-19pct-of-hardware-budgets", "citation_text": "19% of business hardware budgets for 2016 were planned for servers, behind desktops at 21%, in Spiceworks' 2016 State of IT survey as eWeek reported it (Spiceworks via eWeek, 2016). Source: eWeek (Spiceworks survey), \"10 Eye-Opening Findings From Spiceworks' 2016 State of IT Report\" (https://www.eweek.com/it-management/10-eye-opening-findings-from-spiceworks-2016-state-of-it-report/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#eweek-2016-spiceworks-2016-state-of-it-servers-19pct-of-hardware-budgets." }, { "id": "spiceworks-2017-state-of-it-servers-17pct-of-hardware-budgets", "family": "on-premises-and-cloud-share", "statement": "17% of business hardware budgets for 2017 were planned for servers, close behind desktops (18%) and laptops (16%), in Spiceworks' 2017 State of IT survey of almost 900 IT buyers (Spiceworks, 2016).", "short_statement": null, "short_refs": null, "value": 17, "unit": "% of planned hardware budget (average)", "display_value": "17%", "display_label": "", "display_hook": null, "row_label": "2017", "publisher_short": null, "geography": "North America and Europe", "period": "2017", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": 900, "publisher": "Spiceworks", "source_title": "The 2017 State of IT", "source_url": "https://www.spiceworks.com/marketing/state-of-it/report/", "source_type": "secondary", "source_access": "open", "published_at": "2016-09-29", "accessed_at": "2026-10-14", "quote": "In hardware spend, desktops (18%) and laptops (16%) are nearing a tie as planned spending on desktop PCs decreases slightly for 2017 (particularly in EMEA). Server spending (17%) is also a top contender.", "locator": "Section 'Budget breakdown in 2017' (Wayback snapshot 20170314003316)", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-share-of-hardware-budget", "history": [], "notes": "Sample 'almost 900 IT buyers'. Publication date from eWeek's coverage (29 September 2016). Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/wayback-2017-spiceworks-state-of-it-report.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2017-state-of-it-servers-17pct-of-hardware-budgets", "citation_text": "17% of business hardware budgets for 2017 were planned for servers, close behind desktops (18%) and laptops (16%), in Spiceworks' 2017 State of IT survey of almost 900 IT buyers (Spiceworks, 2016). Source: Spiceworks, \"The 2017 State of IT\" (https://www.spiceworks.com/marketing/state-of-it/report/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2017-state-of-it-servers-17pct-of-hardware-budgets." }, { "id": "spiceworks-2018-state-of-it-servers-13pct-of-hardware-budgets", "family": "on-premises-and-cloud-share", "statement": "13% of business hardware budgets for 2018 were planned for servers, behind desktops (17%) and laptops (15%), in Spiceworks' 2018 State of IT survey of more than 1,000 IT buyers (Spiceworks, 2017).", "short_statement": null, "short_refs": null, "value": 13, "unit": "% of planned hardware budget (average)", "display_value": "13%", "display_label": "", "display_hook": null, "row_label": "2018", "publisher_short": null, "geography": "North America and Europe", "period": "2018", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": 1000, "publisher": "Spiceworks", "source_title": "2018 State of IT: Trends, Budgets & Purchase Drivers", "source_url": "https://www.spiceworks.com/marketing/state-of-it/report/", "source_type": "secondary", "source_access": "open", "published_at": "2017-10-09", "accessed_at": "2026-10-14", "quote": "Hardware haul: desktops (17%), laptops (15%), servers (13%), and networking (8%) fill up the biggest portion of IT budgets.", "locator": "Section 'Lay of the Budget Land', hardware budget breakout (Wayback snapshot 20180308190648)", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-share-of-hardware-budget", "history": [], "notes": "Released 9 October 2017 at SpiceWorld (eWeek, 11 October 2017). Sample 'more than one thousand IT buyers'. Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/wayback-2018-spiceworks-state-of-it-report.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2018-state-of-it-servers-13pct-of-hardware-budgets", "citation_text": "13% of business hardware budgets for 2018 were planned for servers, behind desktops (17%) and laptops (15%), in Spiceworks' 2018 State of IT survey of more than 1,000 IT buyers (Spiceworks, 2017). Source: Spiceworks, \"2018 State of IT: Trends, Budgets & Purchase Drivers\" (https://www.spiceworks.com/marketing/state-of-it/report/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2018-state-of-it-servers-13pct-of-hardware-budgets." }, { "id": "spiceworks-2019-state-of-it-servers-12pct-of-hardware-budgets", "family": "on-premises-and-cloud-share", "statement": "12% of business hardware budgets for 2019 were planned for servers, behind desktops (18%) and laptops (17%), in Spiceworks' 2019 State of IT survey of more than 700 IT buyers (Spiceworks, 2018).", "short_statement": null, "short_refs": null, "value": 12, "unit": "% of planned hardware budget (average)", "display_value": "12%", "display_label": "", "display_hook": null, "row_label": "2019", "publisher_short": null, "geography": "North America and Europe", "period": "2019", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": 700, "publisher": "Spiceworks", "source_title": "2019 State of IT: Industry Trends on Tech Spend, Adoption & Jobs", "source_url": "https://www.spiceworks.com/marketing/state-of-it/report/", "source_type": "secondary", "source_access": "open", "published_at": "2018-09-15", "accessed_at": "2026-10-14", "quote": "var r=sortPieChartData([[\"Desktops\",18],[\"Laptops\",17],[\"Servers\",12],[\"Power & climate\",7]", "locator": "Chart 'Hardware budget breakout for 2019', Total view, in the page's chart script chart-it-budgets.js (Wayback snapshot 20190303060854)", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-share-of-hardware-budget", "history": [], "notes": "The figure sits in the report page's chart data (script saved). eWeek (15 September 2018: 'servers will account for 12 percent') and Spiceworks' March 2019 server announcement (VMblog) restate the same 12%. By company size the script gives 15% (100-499 employees) and 10% (500-999) among others. Publication date approximated from eWeek's coverage. Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/wayback-2019-spiceworks-state-of-it-chart-it-budgets.js, eweek-2018-spiceworks-2019-state-of-it.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-state-of-it-servers-12pct-of-hardware-budgets", "citation_text": "12% of business hardware budgets for 2019 were planned for servers, behind desktops (18%) and laptops (17%), in Spiceworks' 2019 State of IT survey of more than 700 IT buyers (Spiceworks, 2018). Source: Spiceworks, \"2019 State of IT: Industry Trends on Tech Spend, Adoption & Jobs\" (https://www.spiceworks.com/marketing/state-of-it/report/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-state-of-it-servers-12pct-of-hardware-budgets." }, { "id": "swzd-2021-state-of-it-servers-12pct-of-hardware-budgets-in-2021", "family": "on-premises-and-cloud-share", "statement": "12% of business hardware budgets for 2021 were planned for on-premises servers, down from 14% in 2020 as some businesses shifted infrastructure to cloud services, in the 2021 State of IT survey (Spiceworks Ziff Davis, 2020).", "short_statement": null, "short_refs": null, "value": 12, "unit": "% of planned hardware budget (average)", "display_value": "12%", "display_label": "", "display_hook": null, "row_label": "2021", "publisher_short": null, "geography": "North America and Europe", "period": "2021", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": 1000, "publisher": "Spiceworks Ziff Davis", "source_title": "The 2021 State of IT", "source_url": "https://swzd.com/resources/state-of-it/", "source_type": "secondary", "source_access": "open", "published_at": "2020-09-15", "accessed_at": "2026-10-14", "quote": "businesses expect on-premises server spending to decrease significantly YoY — from 14% of hardware budgets in 2020 to 12% in 2021 — as some businesses shift infrastructure to cloud services.", "locator": "Section 'Detailed View into Hardware Budgets' (Wayback snapshot 20210224172240)", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-share-of-hardware-budget", "history": [ { "period": "2020", "value": 14 } ], "notes": "Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/wayback-2021-swzd-state-of-it.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#swzd-2021-state-of-it-servers-12pct-of-hardware-budgets-in-2021", "citation_text": "12% of business hardware budgets for 2021 were planned for on-premises servers, down from 14% in 2020 as some businesses shifted infrastructure to cloud services, in the 2021 State of IT survey (Spiceworks Ziff Davis, 2020). Source: Spiceworks Ziff Davis, \"The 2021 State of IT\" (https://swzd.com/resources/state-of-it/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#swzd-2021-state-of-it-servers-12pct-of-hardware-budgets-in-2021." }, { "id": "swzd-2022-state-of-it-servers-11pct-of-hardware-budgets", "family": "on-premises-and-cloud-share", "statement": "11% of business hardware budgets for 2022 were planned for servers, a share that had declined over two years as IT departments shifted workloads to cloud infrastructure, in the 2022 State of IT survey (Spiceworks Ziff Davis, 2021).", "short_statement": null, "short_refs": null, "value": 11, "unit": "% of planned hardware budget (average)", "display_value": "11%", "display_label": "", "display_hook": null, "row_label": "2022", "publisher_short": null, "geography": "North America and Europe", "period": "2022", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": null, "publisher": "Spiceworks Ziff Davis", "source_title": "The 2022 State of IT", "source_url": "https://swzd.com/resources/state-of-it/", "source_type": "secondary", "source_access": "open", "published_at": "2021-09-27", "accessed_at": "2026-10-14", "quote": "While desktops and servers round out the top hardware spending areas in 2022 (14% and 11% of overall hardware budgets, respectively), these categories have been on the decline over the last two years", "locator": "Section 'Mapping Hardware Budgets' (Wayback snapshot 20220302220824)", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-share-of-hardware-budget", "history": [], "notes": "Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/wayback-2022-swzd-state-of-it.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#swzd-2022-state-of-it-servers-11pct-of-hardware-budgets", "citation_text": "11% of business hardware budgets for 2022 were planned for servers, a share that had declined over two years as IT departments shifted workloads to cloud infrastructure, in the 2022 State of IT survey (Spiceworks Ziff Davis, 2021). Source: Spiceworks Ziff Davis, \"The 2022 State of IT\" (https://swzd.com/resources/state-of-it/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#swzd-2022-state-of-it-servers-11pct-of-hardware-budgets." }, { "id": "spiceworks-2026-state-of-it-servers-13-3pct-of-hardware-budgets", "family": "on-premises-and-cloud-share", "statement": "13.3% of business hardware budgets for 2026 were planned for servers, behind laptops (20.9%) and desktops (14.9%), in Spiceworks' 2026 State of IT survey of 835 IT professionals (Spiceworks, 2025).", "short_statement": null, "short_refs": null, "value": 13.3, "unit": "% of planned hardware budget (average)", "display_value": "13.3%", "display_label": "835 IT professionals, North America and Europe (Spiceworks State of IT 2026)", "display_hook": null, "row_label": "2026", "publisher_short": null, "geography": "North America and Europe", "period": "2026", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": 835, "publisher": "Spiceworks", "source_title": "State of IT Report 2026: Key Insights for Businesses", "source_url": "https://www.spiceworks.com/research/it-report/", "source_type": "secondary", "source_access": "open", "published_at": "2025-12-10", "accessed_at": "2026-10-14", "quote": "Investments in core infrastructure, including servers (13.3%) and networking (9.8%), confirms the ongoing need for reliable compute and connectivity.", "locator": "Section 3 'Core Investment Meets Emerging Tech Adoption', Hardware paragraph", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-share-of-hardware-budget", "history": [], "notes": "Fieldwork September 2025 by Spiceworks and Aberdeen Research. The 2023, 2024 and 2025 editions publish no open server share (2023: chart image only; 2024 and 2025: summary pages without it), so the series has a gap 2023-2025. Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/spiceworks-state-of-it-current.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2026-state-of-it-servers-13-3pct-of-hardware-budgets", "citation_text": "13.3% of business hardware budgets for 2026 were planned for servers, behind laptops (20.9%) and desktops (14.9%), in Spiceworks' 2026 State of IT survey of 835 IT professionals (Spiceworks, 2025). Source: Spiceworks, \"State of IT Report 2026: Key Insights for Businesses\" (https://www.spiceworks.com/research/it-report/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2026-state-of-it-servers-13-3pct-of-hardware-budgets." }, { "id": "spiceworks-2020-state-of-it-hardware-33pct-of-it-budgets-down-from-35pct", "family": "on-premises-and-cloud-share", "statement": "33% of business IT budgets for 2020 were planned for hardware, down from 35% in 2019, in Spiceworks' 2020 State of IT survey of more than 1,000 technology buyers (Spiceworks, 2019).", "short_statement": null, "short_refs": null, "value": 33, "unit": "% of planned IT budget (average)", "display_value": "33%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2020", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": 1000, "publisher": "Spiceworks", "source_title": "2020 State of IT: Tech Budgets, Trends, and Purchase Drivers", "source_url": "https://www.spiceworks.com/marketing/state-of-it/report/", "source_type": "secondary", "source_access": "open", "published_at": "2019-09-23", "accessed_at": "2026-10-14", "quote": "hardware budgets as a percentage of total IT spend are waning slightly from 35% in 2019 to 33% in 2020.", "locator": "Section on budget allocation (Wayback snapshot 20200305034801)", "derived": false, "formula": null, "headline": false, "series": "spiceworks-hardware-share-of-it-budget", "history": [ { "period": "2019", "value": 35 } ], "notes": "Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/wayback-2020-spiceworks-state-of-it-report.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2020-state-of-it-hardware-33pct-of-it-budgets-down-from-35pct", "citation_text": "33% of business IT budgets for 2020 were planned for hardware, down from 35% in 2019, in Spiceworks' 2020 State of IT survey of more than 1,000 technology buyers (Spiceworks, 2019). Source: Spiceworks, \"2020 State of IT: Tech Budgets, Trends, and Purchase Drivers\" (https://www.spiceworks.com/marketing/state-of-it/report/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2020-state-of-it-hardware-33pct-of-it-budgets-down-from-35pct." }, { "id": "swzd-2021-state-of-it-hardware-31pct-of-it-budgets", "family": "on-premises-and-cloud-share", "statement": "31% of business IT budgets for 2021 were planned for hardware, down from 35% in 2019, while hosted and cloud services rose to 24% from 21%, in the 2021 State of IT survey (Spiceworks Ziff Davis, 2020).", "short_statement": null, "short_refs": null, "value": 31, "unit": "% of planned IT budget (average)", "display_value": "31%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2021", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": 1000, "publisher": "Spiceworks Ziff Davis", "source_title": "The 2021 State of IT", "source_url": "https://swzd.com/resources/state-of-it/", "source_type": "secondary", "source_access": "open", "published_at": "2020-09-15", "accessed_at": "2026-10-14", "quote": "hardware budgets as a percentage of total IT budgets have dropped significantly in the last two years — from 35% in 2019 to 31% in 2021.", "locator": "Section on IT budget allocation (Wayback snapshot 20210224172240); the next sentences give hosted/cloud services 24% in 2021, up from 21% in 2019", "derived": false, "formula": null, "headline": false, "series": "spiceworks-hardware-share-of-it-budget", "history": [], "notes": "Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/wayback-2021-swzd-state-of-it.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#swzd-2021-state-of-it-hardware-31pct-of-it-budgets", "citation_text": "31% of business IT budgets for 2021 were planned for hardware, down from 35% in 2019, while hosted and cloud services rose to 24% from 21%, in the 2021 State of IT survey (Spiceworks Ziff Davis, 2020). Source: Spiceworks Ziff Davis, \"The 2021 State of IT\" (https://swzd.com/resources/state-of-it/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#swzd-2021-state-of-it-hardware-31pct-of-it-budgets." }, { "id": "itam-review-2022-03-10-swzd-hardware-30pct-of-it-budgets-in-2022", "family": "on-premises-and-cloud-share", "statement": "30% of business IT budgets in 2022 went to hardware, down from 33% in 2020, while cloud rose from 22% to 26%, in Spiceworks Ziff Davis' Hardware Trends survey of more than 1,000 IT professionals as ITAM Review reported it (SWZD via ITAM Review, 2022).", "short_statement": null, "short_refs": null, "value": 30, "unit": "% of IT budget (average)", "display_value": "30%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (SWZD survey)", "period": "2022", "population": "IT professionals surveyed by Spiceworks Ziff Davis (Hardware Trends report, 2022)", "sample_n": 1000, "publisher": "ITAM Review (SWZD survey)", "source_title": "Hardware Remains Top IT Spending Category", "source_url": "https://itassetmanagement.net/2022/03/10/hardware-remains-top-it-spending-category-swzd-survey/", "source_type": "secondary", "source_access": "open", "published_at": "2022-03-10", "accessed_at": "2026-10-14", "quote": "SWZD's research revealed a shift towards cloud (22% of overall IT budgets in 2020 to 26% in 2022) at the expense of hardware spending (33% of IT budgets in 2020 to 30% in 2022).", "locator": "Paragraph after the bullet list", "derived": false, "formula": null, "headline": false, "series": "spiceworks-hardware-share-of-it-budget", "history": [], "notes": "SWZD's own release (VentureBeat, 16 March 2022) is behind a bot check; ITAM Review quotes the report directly. Saved copy: raw/on-premises-and-cloud-share/itam-2022-03-10-swzd-hardware.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#itam-review-2022-03-10-swzd-hardware-30pct-of-it-budgets-in-2022", "citation_text": "30% of business IT budgets in 2022 went to hardware, down from 33% in 2020, while cloud rose from 22% to 26%, in Spiceworks Ziff Davis' Hardware Trends survey of more than 1,000 IT professionals as ITAM Review reported it (SWZD via ITAM Review, 2022). Source: ITAM Review (SWZD survey), \"Hardware Remains Top IT Spending Category\" (https://itassetmanagement.net/2022/03/10/hardware-remains-top-it-spending-category-swzd-survey/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#itam-review-2022-03-10-swzd-hardware-30pct-of-it-budgets-in-2022." }, { "id": "itam-review-2022-03-10-swzd-36pct-have-integrated-on-premises-with-public-cloud", "family": "on-premises-and-cloud-share", "statement": "36% of organisations had integrated their on-premises infrastructure with a public cloud, and another 18% planned to, in Spiceworks Ziff Davis' 2022 Hardware Trends survey of more than 1,000 IT professionals (SWZD via ITAM Review, 2022).", "short_statement": null, "short_refs": null, "value": 36, "unit": "% of organisations surveyed by SWZD", "display_value": "36%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (SWZD survey)", "period": "2022", "population": "IT professionals surveyed by Spiceworks Ziff Davis (Hardware Trends report, 2022)", "sample_n": 1000, "publisher": "ITAM Review (SWZD survey)", "source_title": "Hardware Remains Top IT Spending Category", "source_url": "https://itassetmanagement.net/2022/03/10/hardware-remains-top-it-spending-category-swzd-survey/", "source_type": "secondary", "source_access": "open", "published_at": "2022-03-10", "accessed_at": "2026-10-14", "quote": "Currently, 36% of organizations have integrated their on-premises infrastructure with a public cloud (also referred to as hybrid cloud). An additional 18% plan to implement this capability", "locator": "Quoted SWZD passage near the end", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Saved copy: raw/on-premises-and-cloud-share/itam-2022-03-10-swzd-hardware.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#itam-review-2022-03-10-swzd-36pct-have-integrated-on-premises-with-public-cloud", "citation_text": "36% of organisations had integrated their on-premises infrastructure with a public cloud, and another 18% planned to, in Spiceworks Ziff Davis' 2022 Hardware Trends survey of more than 1,000 IT professionals (SWZD via ITAM Review, 2022). Source: ITAM Review (SWZD survey), \"Hardware Remains Top IT Spending Category\" (https://itassetmanagement.net/2022/03/10/hardware-remains-top-it-spending-category-swzd-survey/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#itam-review-2022-03-10-swzd-36pct-have-integrated-on-premises-with-public-cloud." }, { "id": "swzd-2023-state-of-it-cloud-23pct-of-it-budgets-after-26pct-peak", "family": "on-premises-and-cloud-share", "statement": "23% of business IT budgets for 2023 were planned for cloud services, down from 26% in 2022 (and up from 22% in 2020) as workers returned to offices, in the 2023 State of IT survey of more than 1,400 IT professionals (Spiceworks Ziff Davis, 2022).", "short_statement": null, "short_refs": null, "value": 23, "unit": "% of planned IT budget (average)", "display_value": "23%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America, Europe, Asia-Pacific and Latin America", "period": "2023", "population": "IT professionals in North America, Europe, APAC and Latin America (SWZD State of IT survey, June 2022)", "sample_n": 1400, "publisher": "Spiceworks Ziff Davis", "source_title": "The 2023 State of IT", "source_url": "https://swzd.com/resources/state-of-it/", "source_type": "secondary", "source_access": "open", "published_at": "2022-09-09", "accessed_at": "2026-10-14", "quote": "Cloud spending plans rose from 22% of overall IT budgets in 2020 to 26% in 2022. But with more workers returning to the office, cloud spending plans have since fallen back to 23% of planned 2023 IT budgets.", "locator": "Chapter 3 'IT Budget Allocations', 'Biggest IT Budget Shifts in 2023' (Wayback snapshot 20230301232624)", "derived": false, "formula": null, "headline": false, "series": "spiceworks-cloud-share-of-it-budget", "history": [ { "period": "2020", "value": 22 }, { "period": "2022", "value": 26 } ], "notes": "Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/wayback-2023-swzd-state-of-it.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#swzd-2023-state-of-it-cloud-23pct-of-it-budgets-after-26pct-peak", "citation_text": "23% of business IT budgets for 2023 were planned for cloud services, down from 26% in 2022 (and up from 22% in 2020) as workers returned to offices, in the 2023 State of IT survey of more than 1,400 IT professionals (Spiceworks Ziff Davis, 2022). Source: Spiceworks Ziff Davis, \"The 2023 State of IT\" (https://swzd.com/resources/state-of-it/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#swzd-2023-state-of-it-cloud-23pct-of-it-budgets-after-26pct-peak." }, { "id": "swzd-2022-state-of-it-50pct-of-workloads-expected-in-cloud-by-2023", "family": "on-premises-and-cloud-share", "statement": "50% of all business workloads were expected to run in the cloud by 2023, up from 40% in 2021, in Spiceworks Ziff Davis' 2021 cloud research cited in its 2022 State of IT (Spiceworks Ziff Davis, 2021).", "short_statement": null, "short_refs": null, "value": 50, "unit": "% of business workloads (expected, 2023)", "display_value": "50% by 2023 (40% in 2021)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2021", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": null, "publisher": "Spiceworks Ziff Davis", "source_title": "The 2022 State of IT", "source_url": "https://swzd.com/resources/state-of-it/", "source_type": "secondary", "source_access": "open", "published_at": "2021-09-27", "accessed_at": "2026-10-14", "quote": "Our recent cloud research discovered 50% of all business workloads are expected to run in the cloud by 2023, up from 40% in 2021.", "locator": "Cloud budget section (Wayback snapshot 20220302220824)", "derived": false, "formula": null, "headline": false, "series": "", "history": [ { "period": "2021", "value": 40 } ], "notes": "An expectation, not a measured share; the underlying SWZD cloud study is not published openly. Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/wayback-2022-swzd-state-of-it.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#swzd-2022-state-of-it-50pct-of-workloads-expected-in-cloud-by-2023", "citation_text": "50% of all business workloads were expected to run in the cloud by 2023, up from 40% in 2021, in Spiceworks Ziff Davis' 2021 cloud research cited in its 2022 State of IT (Spiceworks Ziff Davis, 2021). Source: Spiceworks Ziff Davis, \"The 2022 State of IT\" (https://swzd.com/resources/state-of-it/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#swzd-2022-state-of-it-50pct-of-workloads-expected-in-cloud-by-2023." }, { "id": "swzd-2021-state-of-it-35pct-migrated-or-accelerating-workload-migration-to-cloud-covid", "family": "on-premises-and-cloud-share", "statement": "35% of organisations had already migrated, or planned to accelerate migrating, workloads to the cloud because of COVID-19, in the 2021 State of IT survey of more than 1,000 IT decision makers (Spiceworks Ziff Davis, 2020).", "short_statement": null, "short_refs": null, "value": 35, "unit": "% of organisations surveyed by SWZD", "display_value": "35%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2020", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": 1000, "publisher": "Spiceworks Ziff Davis", "source_title": "The 2021 State of IT", "source_url": "https://swzd.com/resources/state-of-it/", "source_type": "secondary", "source_access": "open", "published_at": "2020-09-15", "accessed_at": "2026-10-14", "quote": "35% of organizations have either already migrated or plan to accelerate migration of workloads to the cloud due to COVID-19.", "locator": "Budget allocation section (Wayback snapshot 20210224172240)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/wayback-2021-swzd-state-of-it.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#swzd-2021-state-of-it-35pct-migrated-or-accelerating-workload-migration-to-cloud-covid", "citation_text": "35% of organisations had already migrated, or planned to accelerate migrating, workloads to the cloud because of COVID-19, in the 2021 State of IT survey of more than 1,000 IT decision makers (Spiceworks Ziff Davis, 2020). Source: Spiceworks Ziff Davis, \"The 2021 State of IT\" (https://swzd.com/resources/state-of-it/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#swzd-2021-state-of-it-35pct-migrated-or-accelerating-workload-migration-to-cloud-covid." }, { "id": "spiceworks-2019-state-of-it-64pct-raising-budgets-to-upgrade-outdated-infrastructure", "family": "on-premises-and-cloud-share", "statement": "64% of companies increasing IT budgets for 2019 were doing so to upgrade outdated IT infrastructure, in Spiceworks' 2019 State of IT survey of more than 700 IT buyers (Spiceworks, 2018).", "short_statement": null, "short_refs": null, "value": 64, "unit": "% of companies increasing IT budgets", "display_value": "64%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2019", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": 700, "publisher": "Spiceworks", "source_title": "2019 State of IT: Industry Trends on Tech Spend, Adoption & Jobs", "source_url": "https://www.spiceworks.com/marketing/state-of-it/report/", "source_type": "secondary", "source_access": "open", "published_at": "2018-09-15", "accessed_at": "2026-10-14", "quote": "Most companies (64%) are ramping budgets so they can upgrade outdated IT infrastructure", "locator": "Section on factors leading to IT budget increases (Wayback snapshot 20190303060854)", "derived": false, "formula": null, "headline": false, "series": "spiceworks-outdated-infrastructure-as-budget-driver", "history": [], "notes": "The same report ties hardware budget growth to the approaching Windows 7 and Windows Server 2008 end of extended support. Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/wayback-2019-spiceworks-state-of-it-report.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-state-of-it-64pct-raising-budgets-to-upgrade-outdated-infrastructure", "citation_text": "64% of companies increasing IT budgets for 2019 were doing so to upgrade outdated IT infrastructure, in Spiceworks' 2019 State of IT survey of more than 700 IT buyers (Spiceworks, 2018). Source: Spiceworks, \"2019 State of IT: Industry Trends on Tech Spend, Adoption & Jobs\" (https://www.spiceworks.com/marketing/state-of-it/report/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2019-state-of-it-64pct-raising-budgets-to-upgrade-outdated-infrastructure." }, { "id": "spiceworks-2026-state-of-it-54pct-cite-need-to-upgrade-outdated-infrastructure", "family": "on-premises-and-cloud-share", "statement": "54% of companies named the need to upgrade outdated IT infrastructure as a driver of their 2026 IT budgets, the most-cited driver, in Spiceworks' 2026 State of IT survey of 835 IT professionals (Spiceworks, 2025).", "short_statement": null, "short_refs": null, "value": 54, "unit": "% of companies surveyed by Spiceworks", "display_value": "54%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2026", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": 835, "publisher": "Spiceworks", "source_title": "State of IT Report 2026: Key Insights for Businesses", "source_url": "https://www.spiceworks.com/research/it-report/", "source_type": "secondary", "source_access": "open", "published_at": "2025-12-10", "accessed_at": "2026-10-14", "quote": "54% Need to Upgrade Outdated IT Infrastructure This is the leading driver, demonstrating an emphasis on system modernization and resilience.", "locator": "Section 2, 'The Top Four Investment Drivers'", "derived": false, "formula": null, "headline": false, "series": "spiceworks-outdated-infrastructure-as-budget-driver", "history": [], "notes": "North America 59% vs EMEA 48% (same section). Base differs from the 2019 figure (2019: companies increasing budgets; 2026: all companies), so read the two as indicative, not a strict trend. Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/spiceworks-state-of-it-current.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2026-state-of-it-54pct-cite-need-to-upgrade-outdated-infrastructure", "citation_text": "54% of companies named the need to upgrade outdated IT infrastructure as a driver of their 2026 IT budgets, the most-cited driver, in Spiceworks' 2026 State of IT survey of 835 IT professionals (Spiceworks, 2025). Source: Spiceworks, \"State of IT Report 2026: Key Insights for Businesses\" (https://www.spiceworks.com/research/it-report/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2026-state-of-it-54pct-cite-need-to-upgrade-outdated-infrastructure." }, { "id": "spiceworks-2026-state-of-it-38pct-decommissioning-unnecessary-infrastructure", "family": "on-premises-and-cloud-share", "statement": "38% of companies planned to decommission unnecessary infrastructure or devices to save costs in 2026, in Spiceworks' 2026 State of IT survey of 835 IT professionals (Spiceworks, 2025).", "short_statement": null, "short_refs": null, "value": 38, "unit": "% of companies surveyed by Spiceworks", "display_value": "38%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2026", "population": "IT buyers at businesses in North America and Europe (Spiceworks / Spiceworks Ziff Davis State of IT survey)", "sample_n": 835, "publisher": "Spiceworks", "source_title": "State of IT Report 2026: Key Insights for Businesses", "source_url": "https://www.spiceworks.com/research/it-report/", "source_type": "secondary", "source_access": "open", "published_at": "2025-12-10", "accessed_at": "2026-10-14", "quote": "Decommissioning unnecessary infrastructure or devices (38%)", "locator": "Section 2, 'The Efficiency Mandate: Cost-Saving Measures'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Spiceworks' State of IT survey of IT buyers (Spiceworks is an IT community and marketplace, Spiceworks Ziff Davis 2020-2023, with Aberdeen from 2023). Budget shares are the average planned allocation for the year named. From the 2025 edition the budget categories follow the TBM framework, so later shares are not directly comparable. Saved copy: raw/on-premises-and-cloud-share/spiceworks-state-of-it-current.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2026-state-of-it-38pct-decommissioning-unnecessary-infrastructure", "citation_text": "38% of companies planned to decommission unnecessary infrastructure or devices to save costs in 2026, in Spiceworks' 2026 State of IT survey of 835 IT professionals (Spiceworks, 2025). Source: Spiceworks, \"State of IT Report 2026: Key Insights for Businesses\" (https://www.spiceworks.com/research/it-report/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2026-state-of-it-38pct-decommissioning-unnecessary-infrastructure." }, { "id": "spiceworks-2018-08-75pct-of-organisations-use-servers-five-years-or-more", "family": "on-premises-and-cloud-share", "statement": "75% of organisations kept their servers in use for five years or more, in Spiceworks' 2018 survey of 1,372 IT professionals in North America and Europe (Spiceworks, 2018).", "short_statement": null, "short_refs": null, "value": 75, "unit": "% of organisations surveyed by Spiceworks", "display_value": "75%", "display_label": "1,372 IT professionals, North America and Europe (Spiceworks, 2018)", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2018", "population": "IT professionals in North America and Europe (Spiceworks 'lifespan of tech' survey, 2018)", "sample_n": 1372, "publisher": "Spiceworks", "source_title": "Data Snapshot: The lifespan of computers and other tech in the workplace", "source_url": "https://community.spiceworks.com/blog/3103-data-snapshot-the-lifespan-of-computers-and-other-tech-in-the-workplace", "source_type": "secondary", "source_access": "open", "published_at": "2018-08-20", "accessed_at": "2026-10-14", "quote": "75 percent of organizations use servers for 5 or more years, with 32 percent using them for 7 or more years, which exceeds most extended warranty periods.", "locator": "Section on device lifespans", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-lifespan", "history": [], "notes": "The same survey: 98% of organisations use company-owned servers; healthcare keeps servers longest (45% for 7+ years). Wayback snapshot 20181214224202; published_at approximated from the first reader comments (20 August 2018). Saved copy: raw/on-premises-and-cloud-share/wayback-spiceworks-2018-lifespan-of-tech-blog.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2018-08-75pct-of-organisations-use-servers-five-years-or-more", "citation_text": "75% of organisations kept their servers in use for five years or more, in Spiceworks' 2018 survey of 1,372 IT professionals in North America and Europe (Spiceworks, 2018). Source: Spiceworks, \"Data Snapshot: The lifespan of computers and other tech in the workplace\" (https://community.spiceworks.com/blog/3103-data-snapshot-the-lifespan-of-computers-and-other-tech-in-the-workplace). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2018-08-75pct-of-organisations-use-servers-five-years-or-more." }, { "id": "spiceworks-2018-08-32pct-of-organisations-use-servers-seven-years-or-more", "family": "on-premises-and-cloud-share", "statement": "32% of organisations kept their servers in use for seven years or more, beyond most extended warranties, in Spiceworks' 2018 survey of 1,372 IT professionals (Spiceworks, 2018).", "short_statement": null, "short_refs": null, "value": 32, "unit": "% of organisations surveyed by Spiceworks", "display_value": "32%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2018", "population": "IT professionals in North America and Europe (Spiceworks 'lifespan of tech' survey, 2018)", "sample_n": 1372, "publisher": "Spiceworks", "source_title": "Data Snapshot: The lifespan of computers and other tech in the workplace", "source_url": "https://community.spiceworks.com/blog/3103-data-snapshot-the-lifespan-of-computers-and-other-tech-in-the-workplace", "source_type": "secondary", "source_access": "open", "published_at": "2018-08-20", "accessed_at": "2026-10-14", "quote": "with 32 percent using them for 7 or more years, which exceeds most extended warranty periods.", "locator": "Section on device lifespans; the healthcare section repeats 'the 32 percent average'", "derived": false, "formula": null, "headline": false, "series": "spiceworks-server-lifespan", "history": [], "notes": "Wayback snapshot 20181214224202; published_at approximated from the first reader comments (20 August 2018). Saved copy: raw/on-premises-and-cloud-share/wayback-spiceworks-2018-lifespan-of-tech-blog.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2018-08-32pct-of-organisations-use-servers-seven-years-or-more", "citation_text": "32% of organisations kept their servers in use for seven years or more, beyond most extended warranties, in Spiceworks' 2018 survey of 1,372 IT professionals (Spiceworks, 2018). Source: Spiceworks, \"Data Snapshot: The lifespan of computers and other tech in the workplace\" (https://community.spiceworks.com/blog/3103-data-snapshot-the-lifespan-of-computers-and-other-tech-in-the-workplace). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#spiceworks-2018-08-32pct-of-organisations-use-servers-seven-years-or-more." }, { "id": "lemondeinformatique-2018-08-24-restates-spiceworks-servers-seven-years-as-37pct", "family": "on-premises-and-cloud-share", "statement": "37% of companies kept a server in place for seven years or more, as Le Monde Informatique restated Spiceworks' 2018 lifespan survey, which gives 32% (Le Monde Informatique, 2018).", "short_statement": null, "short_refs": null, "value": 37, "unit": "restated % of organisations (Spiceworks gives 32%)", "display_value": "37% (source: 32%)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "North America and Europe", "period": "2018", "population": "IT professionals in North America and Europe (Spiceworks 'lifespan of tech' survey, 2018)", "sample_n": 1372, "publisher": "Le Monde Informatique", "source_title": "Le PC de bureau toujours present et privilegie en entreprise", "source_url": "https://www.lemondeinformatique.fr/actualites/lire-le-pc-de-bureau-toujours-present-et-privilegie-en-entreprise-72635.html", "source_type": "secondary", "source_access": "open", "published_at": "2018-08-24", "accessed_at": "2026-10-14", "quote": "Un même serveur reste en place cinq ans et plus dans 75% des entreprises, voir sept ans et plus dans 37% d'entre elles.", "locator": "Third paragraph (French)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Drift: two paragraphs later the same article gives the general average as 32% ('une moyenne de 32%'), matching Spiceworks. The page's canonical points to the sister site distributique.com. Saved copy: raw/on-premises-and-cloud-share/lemondeinformatique-spiceworks-server-lifespan.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#lemondeinformatique-2018-08-24-restates-spiceworks-servers-seven-years-as-37pct", "citation_text": "37% of companies kept a server in place for seven years or more, as Le Monde Informatique restated Spiceworks' 2018 lifespan survey, which gives 32% (Le Monde Informatique, 2018). Source: Le Monde Informatique, \"Le PC de bureau toujours present et privilegie en entreprise\" (https://www.lemondeinformatique.fr/actualites/lire-le-pc-de-bureau-toujours-present-et-privilegie-en-entreprise-72635.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#lemondeinformatique-2018-08-24-restates-spiceworks-servers-seven-years-as-37pct." }, { "id": "techrepublic-premium-2020-04-63pct-of-smbs-use-internal-servers", "family": "on-premises-and-cloud-share", "statement": "63% of small and midsize businesses used internal servers (on- or off-premises), ahead of a mix of servers and cloud (39%) and Microsoft Azure (34%), in TechRepublic Premium's 2020 SMB IT stack survey (TechRepublic, 2020).", "short_statement": null, "short_refs": null, "value": 63, "unit": "% of SMB respondents", "display_value": "63%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (TechRepublic Premium survey)", "period": "2020", "population": "SMB decision makers responding to TechRepublic Premium's SMB IT stack survey", "sample_n": null, "publisher": "TechRepublic Premium", "source_title": "Research: SMB IT stack decisions based on fulfilling business needs", "source_url": "https://www.techrepublic.com/resource-library/research/research-smb-it-stack-decisions-based-on-fulfilling-business-needs/", "source_type": "secondary", "source_access": "open", "published_at": "2020-04-23", "accessed_at": "2026-10-14", "quote": "According to the survey, most respondents (63%) use internal servers (both on- and off-premise). The second most-used service is a combination of servers and cloud services (39%); while Microsoft Azure closely followed at 34%.", "locator": "Report summary paragraph", "derived": false, "formula": null, "headline": false, "series": "techrepublic-premium-smb-internal-servers", "history": [], "notes": "The measure counts internal servers both on- and off-premises, so it is wider than 'on-premises'. Live page now 404; Wayback snapshot 20220420194926. The full report is paywalled, so the sample size is not given. Saved copy: raw/on-premises-and-cloud-share/wayback-techrepublic-premium-smb-it-stack-decisions-2022.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techrepublic-premium-2020-04-63pct-of-smbs-use-internal-servers", "citation_text": "63% of small and midsize businesses used internal servers (on- or off-premises), ahead of a mix of servers and cloud (39%) and Microsoft Azure (34%), in TechRepublic Premium's 2020 SMB IT stack survey (TechRepublic, 2020). Source: TechRepublic Premium, \"Research: SMB IT stack decisions based on fulfilling business needs\" (https://www.techrepublic.com/resource-library/research/research-smb-it-stack-decisions-based-on-fulfilling-business-needs/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techrepublic-premium-2020-04-63pct-of-smbs-use-internal-servers." }, { "id": "techrepublic-premium-2020-04-40pct-of-smbs-plan-to-deploy-internal-servers-within-12-months", "family": "on-premises-and-cloud-share", "statement": "40% of small and midsize businesses planned to deploy internal servers (on- or off-premises) within 12 months, in TechRepublic Premium's 2020 SMB IT stack survey (TechRepublic, 2020).", "short_statement": null, "short_refs": null, "value": 40, "unit": "% of SMB respondents", "display_value": "40%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (TechRepublic Premium survey)", "period": "2020", "population": "SMB decision makers responding to TechRepublic Premium's SMB IT stack survey", "sample_n": null, "publisher": "TechRepublic Premium", "source_title": "Research: SMB IT stack decisions based on fulfilling business needs", "source_url": "https://www.techrepublic.com/resource-library/research/research-smb-it-stack-decisions-based-on-fulfilling-business-needs/", "source_type": "secondary", "source_access": "open", "published_at": "2020-04-23", "accessed_at": "2026-10-14", "quote": "In terms of future deployments, 40% of respondents will deploy internal servers (on- or off-promise) within the next 12 months.", "locator": "Report summary paragraph ('on- or off-promise' sic)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Live page now 404; Wayback snapshot 20220420194926. The full report is paywalled, so the sample size is not given. Saved copy: raw/on-premises-and-cloud-share/wayback-techrepublic-premium-smb-it-stack-decisions-2022.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techrepublic-premium-2020-04-40pct-of-smbs-plan-to-deploy-internal-servers-within-12-months", "citation_text": "40% of small and midsize businesses planned to deploy internal servers (on- or off-premises) within 12 months, in TechRepublic Premium's 2020 SMB IT stack survey (TechRepublic, 2020). Source: TechRepublic Premium, \"Research: SMB IT stack decisions based on fulfilling business needs\" (https://www.techrepublic.com/resource-library/research/research-smb-it-stack-decisions-based-on-fulfilling-business-needs/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techrepublic-premium-2020-04-40pct-of-smbs-plan-to-deploy-internal-servers-within-12-months." }, { "id": "kaspersky-2014-10-29pct-keep-virtual-servers-on-premises-managed-in-house-only", "family": "on-premises-and-cloud-share", "statement": "29% of businesses using virtual servers kept the physical machines on their own premises and maintained them with internal staff only, in Kaspersky Lab's 2014 survey of more than 2,000 virtualization users (Kaspersky, 2014).", "short_statement": null, "short_refs": null, "value": 29, "unit": "% of businesses using virtual servers", "display_value": "29%", "display_label": "Kaspersky Lab survey, 2014, 2,000+ businesses using virtual servers", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2014", "population": "Businesses using virtual servers (more than 2,000 of 3,900 IT professionals in Kaspersky Lab's 2014 IT security risks survey)", "sample_n": 2000, "publisher": "Kaspersky Lab", "source_title": "Most Businesses Use Third-Party Hosting and Maintenance to Manage Virtualization, According to Kaspersky Lab Survey", "source_url": "https://www.kaspersky.com/about/press-releases/most-businesses-use-third-party-hosting-and-maintenance-to-manage-virtualization-according-to-kaspersky-lab-survey", "source_type": "manufacturer", "source_access": "open", "published_at": "2014-10-14", "accessed_at": "2026-10-14", "quote": "only 29% report that their physical machines were located within the walls of their business and maintained by only internal staff.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "kaspersky-2014-virtual-server-hosting", "history": [], "notes": "Vendor survey (Kaspersky sells virtualization security); base is the 2,000+ respondents who use virtual servers. Saved copy: raw/on-premises-and-cloud-share/kaspersky-2014-virtualization-third-party-hosting.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#kaspersky-2014-10-29pct-keep-virtual-servers-on-premises-managed-in-house-only", "citation_text": "29% of businesses using virtual servers kept the physical machines on their own premises and maintained them with internal staff only, in Kaspersky Lab's 2014 survey of more than 2,000 virtualization users (Kaspersky, 2014). Source: Kaspersky Lab, \"Most Businesses Use Third-Party Hosting and Maintenance to Manage Virtualization, According to Kaspersky Lab Survey\" (https://www.kaspersky.com/about/press-releases/most-businesses-use-third-party-hosting-and-maintenance-to-manage-virtualization-according-to-kaspersky-lab-survey). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#kaspersky-2014-10-29pct-keep-virtual-servers-on-premises-managed-in-house-only." }, { "id": "kaspersky-2014-10-17pct-rely-completely-on-third-parties-for-virtual-servers", "family": "on-premises-and-cloud-share", "statement": "17% of businesses using virtual servers relied completely on third-party contractors to house and maintain them, and about 50% used a mix of third-party and in-house hosting and maintenance, in Kaspersky Lab's 2014 survey (Kaspersky, 2014).", "short_statement": null, "short_refs": null, "value": 17, "unit": "% of businesses using virtual servers", "display_value": "17% (about 50% mixed)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2014", "population": "Businesses using virtual servers (more than 2,000 of 3,900 IT professionals in Kaspersky Lab's 2014 IT security risks survey)", "sample_n": 2000, "publisher": "Kaspersky Lab", "source_title": "Most Businesses Use Third-Party Hosting and Maintenance to Manage Virtualization, According to Kaspersky Lab Survey", "source_url": "https://www.kaspersky.com/about/press-releases/most-businesses-use-third-party-hosting-and-maintenance-to-manage-virtualization-according-to-kaspersky-lab-survey", "source_type": "manufacturer", "source_access": "open", "published_at": "2014-10-14", "accessed_at": "2026-10-14", "quote": "17% of business rely completely on third-party contractors to house and maintain their virtual servers and services. By far, the largest proportion of businesses, approximately 50%, rely on a mixture of third-party hosting and maintenance.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "kaspersky-2014-virtual-server-hosting", "history": [], "notes": "Vendor survey (Kaspersky sells virtualization security); base is the 2,000+ respondents who use virtual servers. Saved copy: raw/on-premises-and-cloud-share/kaspersky-2014-virtualization-third-party-hosting.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#kaspersky-2014-10-17pct-rely-completely-on-third-parties-for-virtual-servers", "citation_text": "17% of businesses using virtual servers relied completely on third-party contractors to house and maintain them, and about 50% used a mix of third-party and in-house hosting and maintenance, in Kaspersky Lab's 2014 survey (Kaspersky, 2014). Source: Kaspersky Lab, \"Most Businesses Use Third-Party Hosting and Maintenance to Manage Virtualization, According to Kaspersky Lab Survey\" (https://www.kaspersky.com/about/press-releases/most-businesses-use-third-party-hosting-and-maintenance-to-manage-virtualization-according-to-kaspersky-lab-survey). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#kaspersky-2014-10-17pct-rely-completely-on-third-parties-for-virtual-servers." }, { "id": "kaspersky-2014-10-41pct-of-small-businesses-store-all-virtual-servers-off-site", "family": "on-premises-and-cloud-share", "statement": "41% of small businesses using virtual servers stored all of them off-site with a third-party service, against 26% of enterprises, in Kaspersky Lab's 2014 survey (Kaspersky, 2014).", "short_statement": null, "short_refs": null, "value": 41, "unit": "% of small businesses using virtual servers", "display_value": "41% (enterprises 26%)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2014", "population": "Businesses using virtual servers (more than 2,000 of 3,900 IT professionals in Kaspersky Lab's 2014 IT security risks survey)", "sample_n": 2000, "publisher": "Kaspersky Lab", "source_title": "Most Businesses Use Third-Party Hosting and Maintenance to Manage Virtualization, According to Kaspersky Lab Survey", "source_url": "https://www.kaspersky.com/about/press-releases/most-businesses-use-third-party-hosting-and-maintenance-to-manage-virtualization-according-to-kaspersky-lab-survey", "source_type": "manufacturer", "source_access": "open", "published_at": "2014-10-14", "accessed_at": "2026-10-14", "quote": "41% of small businesses report using a third-party service to store all of their virtual servers at an off-site location, compared to just 26% of enterprises.", "locator": "Fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Correction to the brief: the 41% is small businesses only (enterprises 26%), among businesses that use virtual servers, in 2014; not '41% of SMBs keep all servers off-site'. Vendor survey (Kaspersky sells virtualization security); base is the 2,000+ respondents who use virtual servers. Saved copy: raw/on-premises-and-cloud-share/kaspersky-2014-virtualization-third-party-hosting.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#kaspersky-2014-10-41pct-of-small-businesses-store-all-virtual-servers-off-site", "citation_text": "41% of small businesses using virtual servers stored all of them off-site with a third-party service, against 26% of enterprises, in Kaspersky Lab's 2014 survey (Kaspersky, 2014). Source: Kaspersky Lab, \"Most Businesses Use Third-Party Hosting and Maintenance to Manage Virtualization, According to Kaspersky Lab Survey\" (https://www.kaspersky.com/about/press-releases/most-businesses-use-third-party-hosting-and-maintenance-to-manage-virtualization-according-to-kaspersky-lab-survey). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#kaspersky-2014-10-41pct-of-small-businesses-store-all-virtual-servers-off-site." }, { "id": "kaspersky-2014-10-33pct-of-small-businesses-rely-completely-on-hosting-provider-for-maintenance", "family": "on-premises-and-cloud-share", "statement": "33% of small businesses using virtual servers relied completely on their third-party hosting provider to maintain them, against 18% of enterprises, in Kaspersky Lab's 2014 survey (Kaspersky, 2014).", "short_statement": null, "short_refs": null, "value": 33, "unit": "% of small businesses using virtual servers", "display_value": "33% (enterprises 18%)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2014", "population": "Businesses using virtual servers (more than 2,000 of 3,900 IT professionals in Kaspersky Lab's 2014 IT security risks survey)", "sample_n": 2000, "publisher": "Kaspersky Lab", "source_title": "Most Businesses Use Third-Party Hosting and Maintenance to Manage Virtualization, According to Kaspersky Lab Survey", "source_url": "https://www.kaspersky.com/about/press-releases/most-businesses-use-third-party-hosting-and-maintenance-to-manage-virtualization-according-to-kaspersky-lab-survey", "source_type": "manufacturer", "source_access": "open", "published_at": "2014-10-14", "accessed_at": "2026-10-14", "quote": "33% of small businesses rely completely on their third-party hosting provider, compared to just 18% of enterprises.", "locator": "Fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor survey (Kaspersky sells virtualization security); base is the 2,000+ respondents who use virtual servers. Saved copy: raw/on-premises-and-cloud-share/kaspersky-2014-virtualization-third-party-hosting.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#kaspersky-2014-10-33pct-of-small-businesses-rely-completely-on-hosting-provider-for-maintenance", "citation_text": "33% of small businesses using virtual servers relied completely on their third-party hosting provider to maintain them, against 18% of enterprises, in Kaspersky Lab's 2014 survey (Kaspersky, 2014). Source: Kaspersky Lab, \"Most Businesses Use Third-Party Hosting and Maintenance to Manage Virtualization, According to Kaspersky Lab Survey\" (https://www.kaspersky.com/about/press-releases/most-businesses-use-third-party-hosting-and-maintenance-to-manage-virtualization-according-to-kaspersky-lab-survey). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#kaspersky-2014-10-33pct-of-small-businesses-rely-completely-on-hosting-provider-for-maintenance." }, { "id": "flexera-2020-53pct-of-workloads-in-public-cloud", "family": "on-premises-and-cloud-share", "statement": "53% of organisations' workloads ran in public cloud, and 50% of their data sat there, in Flexera's 2020 State of the Cloud survey of 750 cloud decision-makers (Flexera, 2020).", "short_statement": null, "short_refs": null, "value": 53, "unit": "% of workloads (respondent estimate, all organisations)", "display_value": "53%", "display_label": "", "display_hook": null, "row_label": "2020, all respondents", "publisher_short": null, "geography": "Worldwide", "period": "2020-Q1", "population": "Cloud decision-makers and users at organisations with 100 to 10,000+ employees (Flexera State of the Cloud survey)", "sample_n": 750, "publisher": "Flexera", "source_title": "Flexera 2020 State of the Cloud Report", "source_url": "https://resources.flexera.com/web/pdf/report-state-of-the-cloud-2020.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2020-04-28", "accessed_at": "2026-10-14", "quote": "Figure 15 shows that respondents are running 53 percent of their workloads in a public cloud, and they expect to increase that number to 60 percent in the next 12 months.", "locator": "Page 22, 'Half of workloads and data are in a public cloud'", "derived": false, "formula": null, "headline": false, "series": "flexera-workloads-in-public-cloud-all", "history": [], "notes": "Data: 'Fifty percent of organizations' data is in a public cloud today'. Expected 60% within 12 months. Vendor survey (Flexera sells cloud cost-management software); the page-2 dataset labels Flexera 'secondary'. Respondent-estimated share of their organisation's workloads, so the remainder is NOT in public cloud (on-premises, private cloud, hosting). Enterprise = 1,000+ employees. Budget and waste figures from the same reports are on the data-migration page and are not repeated here. Saved copy: raw/on-premises-and-cloud-share/flexera-state-of-the-cloud-2020.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2020-53pct-of-workloads-in-public-cloud", "citation_text": "53% of organisations' workloads ran in public cloud, and 50% of their data sat there, in Flexera's 2020 State of the Cloud survey of 750 cloud decision-makers (Flexera, 2020). Source: Flexera, \"Flexera 2020 State of the Cloud Report\" (https://resources.flexera.com/web/pdf/report-state-of-the-cloud-2020.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2020-53pct-of-workloads-in-public-cloud." }, { "id": "flexera-2020-enterprises-48pct-of-workloads-in-public-cloud", "family": "on-premises-and-cloud-share", "statement": "48% of enterprise workloads ran in public cloud, so about half still ran elsewhere, in Flexera's 2020 State of the Cloud survey of 554 enterprises (Flexera, 2020).", "short_statement": null, "short_refs": null, "value": 48, "unit": "% of enterprise workloads (respondent estimate)", "display_value": "48%", "display_label": "", "display_hook": null, "row_label": "2020, enterprises", "publisher_short": null, "geography": "Worldwide", "period": "2020-Q1", "population": "Cloud decision-makers and users at organisations with 100 to 10,000+ employees (Flexera State of the Cloud survey)", "sample_n": 554, "publisher": "Flexera", "source_title": "Flexera 2020 State of the Cloud Report", "source_url": "https://resources.flexera.com/web/pdf/report-state-of-the-cloud-2020.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2020-04-28", "accessed_at": "2026-10-14", "quote": "As Figure 16 indicates, enterprises are running 48 percent of workloads and storing 45 percent of data in a public cloud.", "locator": "Page 23, 'Nearly half of enterprise workloads and data are in a public cloud'", "derived": false, "formula": null, "headline": false, "series": "flexera-workloads-in-public-cloud-enterprise", "history": [], "notes": "Vendor survey (Flexera sells cloud cost-management software); the page-2 dataset labels Flexera 'secondary'. Respondent-estimated share of their organisation's workloads, so the remainder is NOT in public cloud (on-premises, private cloud, hosting). Enterprise = 1,000+ employees. Budget and waste figures from the same reports are on the data-migration page and are not repeated here. Saved copy: raw/on-premises-and-cloud-share/flexera-state-of-the-cloud-2020.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2020-enterprises-48pct-of-workloads-in-public-cloud", "citation_text": "48% of enterprise workloads ran in public cloud, so about half still ran elsewhere, in Flexera's 2020 State of the Cloud survey of 554 enterprises (Flexera, 2020). Source: Flexera, \"Flexera 2020 State of the Cloud Report\" (https://resources.flexera.com/web/pdf/report-state-of-the-cloud-2020.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2020-enterprises-48pct-of-workloads-in-public-cloud." }, { "id": "flexera-2021-enterprises-47pct-of-workloads-in-public-cloud", "family": "on-premises-and-cloud-share", "statement": "47% of enterprise workloads ran in public cloud, against 50% across all organisations, in Flexera's 2021 State of the Cloud survey of 750 cloud decision-makers (Flexera, 2021).", "short_statement": null, "short_refs": null, "value": 47, "unit": "% of enterprise workloads (respondent estimate)", "display_value": "47%", "display_label": "", "display_hook": null, "row_label": "2021, enterprises", "publisher_short": null, "geography": "Worldwide", "period": "2020-Q4", "population": "Cloud decision-makers and users at organisations with 100 to 10,000+ employees (Flexera State of the Cloud survey)", "sample_n": 750, "publisher": "Flexera", "source_title": "Flexera 2021 State of the Cloud Report", "source_url": "https://resources.flexera.com/web/pdf/report-cm-state-of-the-cloud-2021.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2021-03-09", "accessed_at": "2026-10-14", "quote": "As Figure 16 indicates, enterprises are running 47 percent of workloads and storing 44 percent of data in a public cloud.", "locator": "Page 26, 'Nearly half of enterprise workloads and data are in a public cloud'", "derived": false, "formula": null, "headline": false, "series": "flexera-workloads-in-public-cloud-enterprise", "history": [], "notes": "All organisations: 'respondents are running 50 percent of their workloads in public cloud' (page 25). Survey October-November 2020; 637 enterprise respondents. Flexera's press release headlines the expectation instead: '54 percent of enterprise workloads are expected to be in public cloud in 12 months' (saved: flexera-2021-press-release.txt); a German trade report gave 55%. Vendor survey (Flexera sells cloud cost-management software); the page-2 dataset labels Flexera 'secondary'. Respondent-estimated share of their organisation's workloads, so the remainder is NOT in public cloud (on-premises, private cloud, hosting). Enterprise = 1,000+ employees. Budget and waste figures from the same reports are on the data-migration page and are not repeated here. Saved copy: raw/on-premises-and-cloud-share/flexera-state-of-the-cloud-2021.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2021-enterprises-47pct-of-workloads-in-public-cloud", "citation_text": "47% of enterprise workloads ran in public cloud, against 50% across all organisations, in Flexera's 2021 State of the Cloud survey of 750 cloud decision-makers (Flexera, 2021). Source: Flexera, \"Flexera 2021 State of the Cloud Report\" (https://resources.flexera.com/web/pdf/report-cm-state-of-the-cloud-2021.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2021-enterprises-47pct-of-workloads-in-public-cloud." }, { "id": "flexera-2022-50pct-of-workloads-in-public-cloud", "family": "on-premises-and-cloud-share", "statement": "50% of organisations' workloads ran in public cloud, and 48% of their data, in Flexera's 2022 State of the Cloud survey of 753 cloud decision-makers (Flexera, 2022).", "short_statement": null, "short_refs": null, "value": 50, "unit": "% of workloads (respondent estimate, all organisations)", "display_value": "50%", "display_label": "", "display_hook": null, "row_label": "2022, all respondents", "publisher_short": null, "geography": "Worldwide", "period": "2021-Q4", "population": "Cloud decision-makers and users at organisations with 100 to 10,000+ employees (Flexera State of the Cloud survey)", "sample_n": 753, "publisher": "Flexera", "source_title": "Flexera 2022 State of the Cloud Report", "source_url": "https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2022.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2022-03-09", "accessed_at": "2026-10-14", "quote": "Figure 16 shows that respondents are running 50 percent of their workloads in public cloud, and they expect to increase that number to 56 percent in the next twelve months.", "locator": "Page 24, 'Half of workloads and data from all respondents is in a public cloud'", "derived": false, "formula": null, "headline": false, "series": "flexera-workloads-in-public-cloud-all", "history": [], "notes": "Vendor survey (Flexera sells cloud cost-management software); the page-2 dataset labels Flexera 'secondary'. Respondent-estimated share of their organisation's workloads, so the remainder is NOT in public cloud (on-premises, private cloud, hosting). Enterprise = 1,000+ employees. Budget and waste figures from the same reports are on the data-migration page and are not repeated here. Saved copy: raw/on-premises-and-cloud-share/flexera-state-of-the-cloud-2022.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2022-50pct-of-workloads-in-public-cloud", "citation_text": "50% of organisations' workloads ran in public cloud, and 48% of their data, in Flexera's 2022 State of the Cloud survey of 753 cloud decision-makers (Flexera, 2022). Source: Flexera, \"Flexera 2022 State of the Cloud Report\" (https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2022.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2022-50pct-of-workloads-in-public-cloud." }, { "id": "flexera-2022-enterprises-49pct-of-workloads-in-public-cloud", "family": "on-premises-and-cloud-share", "statement": "49% of enterprise workloads ran in public cloud in Flexera's 2022 State of the Cloud survey of 753 cloud decision-makers (Flexera, 2022).", "short_statement": null, "short_refs": null, "value": 49, "unit": "% of enterprise workloads (respondent estimate)", "display_value": "49%", "display_label": "", "display_hook": null, "row_label": "2022, enterprises", "publisher_short": null, "geography": "Worldwide", "period": "2021-Q4", "population": "Cloud decision-makers and users at organisations with 100 to 10,000+ employees (Flexera State of the Cloud survey)", "sample_n": 753, "publisher": "Flexera", "source_title": "Flexera 2022 State of the Cloud Report", "source_url": "https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2022.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2022-03-09", "accessed_at": "2026-10-14", "quote": "As figures 18 and 19 indicate, enterprises are running 49 percent of workloads and storing 46 percent of data in a public cloud.", "locator": "Page 25, 'Nearly half of enterprise workloads and data is in a public cloud'", "derived": false, "formula": null, "headline": false, "series": "flexera-workloads-in-public-cloud-enterprise", "history": [], "notes": "Vendor survey (Flexera sells cloud cost-management software); the page-2 dataset labels Flexera 'secondary'. Respondent-estimated share of their organisation's workloads, so the remainder is NOT in public cloud (on-premises, private cloud, hosting). Enterprise = 1,000+ employees. Budget and waste figures from the same reports are on the data-migration page and are not repeated here. Saved copy: raw/on-premises-and-cloud-share/flexera-state-of-the-cloud-2022.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2022-enterprises-49pct-of-workloads-in-public-cloud", "citation_text": "49% of enterprise workloads ran in public cloud in Flexera's 2022 State of the Cloud survey of 753 cloud decision-makers (Flexera, 2022). Source: Flexera, \"Flexera 2022 State of the Cloud Report\" (https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2022.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2022-enterprises-49pct-of-workloads-in-public-cloud." }, { "id": "flexera-2023-enterprises-50pct-of-workloads-in-public-cloud", "family": "on-premises-and-cloud-share", "statement": "50% of enterprise workloads ran in public cloud, against 53% across all organisations, in Flexera's 2023 State of the Cloud survey of 750 cloud decision-makers (Flexera, 2023).", "short_statement": null, "short_refs": null, "value": 50, "unit": "% of enterprise workloads (respondent estimate)", "display_value": "50%", "display_label": "", "display_hook": null, "row_label": "2023, enterprises", "publisher_short": null, "geography": "Worldwide", "period": "2022-Q4", "population": "Cloud decision-makers and users at organisations with 100 to 10,000+ employees (Flexera State of the Cloud survey)", "sample_n": 627, "publisher": "Flexera", "source_title": "Flexera 2023 State of the Cloud Report", "source_url": "https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2023.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2023-03-08", "accessed_at": "2026-10-14", "quote": "Enterprises, which have more complex environments and tend to move more slowly, have 50% of workloads and 48% of data in public cloud.", "locator": "Page 24, 'Workloads in public cloud' (figure: all respondents 53%, enterprise 50%, SMB 67%)", "derived": false, "formula": null, "headline": false, "series": "flexera-workloads-in-public-cloud-enterprise", "history": [], "notes": "All respondents: 53% (figure on page 24; text: 'more than half of workloads and data are in public cloud today'). Enterprise N=627, SMB N=123. Vendor survey (Flexera sells cloud cost-management software); the page-2 dataset labels Flexera 'secondary'. Respondent-estimated share of their organisation's workloads, so the remainder is NOT in public cloud (on-premises, private cloud, hosting). Enterprise = 1,000+ employees. Budget and waste figures from the same reports are on the data-migration page and are not repeated here. Saved copy: raw/on-premises-and-cloud-share/flexera-state-of-the-cloud-2023.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2023-enterprises-50pct-of-workloads-in-public-cloud", "citation_text": "50% of enterprise workloads ran in public cloud, against 53% across all organisations, in Flexera's 2023 State of the Cloud survey of 750 cloud decision-makers (Flexera, 2023). Source: Flexera, \"Flexera 2023 State of the Cloud Report\" (https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2023.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2023-enterprises-50pct-of-workloads-in-public-cloud." }, { "id": "flexera-2024-51pct-of-workloads-in-public-cloud", "family": "on-premises-and-cloud-share", "statement": "51% of organisations' workloads ran in public cloud, with enterprises at 49% and SMBs at 61%, in Flexera's 2024 State of the Cloud survey of 753 cloud decision-makers (Flexera, 2024).", "short_statement": null, "short_refs": null, "value": 51, "unit": "% of workloads (respondent estimate, all organisations)", "display_value": "51%", "display_label": "", "display_hook": null, "row_label": "2024, all respondents", "publisher_short": null, "geography": "Worldwide", "period": "2023-Q4", "population": "Cloud decision-makers and users at organisations with 100 to 10,000+ employees (Flexera State of the Cloud survey)", "sample_n": 753, "publisher": "Flexera", "source_title": "Flexera 2024 State of the Cloud Report", "source_url": "https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2024.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2024-03-12", "accessed_at": "2026-10-14", "quote": "For all respondents, 51% of workloads are in the public cloud today, with an additional 7% expected in the next twelve months.", "locator": "Page 26", "derived": false, "formula": null, "headline": false, "series": "flexera-workloads-in-public-cloud-all", "history": [], "notes": "Same page: enterprises '49% of workloads in public cloud and 48% of data'; SMBs 61% (down from 67%). Vendor survey (Flexera sells cloud cost-management software); the page-2 dataset labels Flexera 'secondary'. Respondent-estimated share of their organisation's workloads, so the remainder is NOT in public cloud (on-premises, private cloud, hosting). Enterprise = 1,000+ employees. Budget and waste figures from the same reports are on the data-migration page and are not repeated here. Saved copy: raw/on-premises-and-cloud-share/flexera-state-of-the-cloud-2024.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2024-51pct-of-workloads-in-public-cloud", "citation_text": "51% of organisations' workloads ran in public cloud, with enterprises at 49% and SMBs at 61%, in Flexera's 2024 State of the Cloud survey of 753 cloud decision-makers (Flexera, 2024). Source: Flexera, \"Flexera 2024 State of the Cloud Report\" (https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2024.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2024-51pct-of-workloads-in-public-cloud." }, { "id": "flexera-2024-enterprises-49pct-of-workloads-in-public-cloud", "family": "on-premises-and-cloud-share", "statement": "49% of enterprise workloads ran in public cloud in Flexera's 2024 State of the Cloud survey of 753 cloud decision-makers (Flexera, 2024).", "short_statement": null, "short_refs": null, "value": 49, "unit": "% of enterprise workloads (respondent estimate)", "display_value": "49%", "display_label": "", "display_hook": null, "row_label": "2024, enterprises", "publisher_short": null, "geography": "Worldwide", "period": "2023-Q4", "population": "Cloud decision-makers and users at organisations with 100 to 10,000+ employees (Flexera State of the Cloud survey)", "sample_n": 753, "publisher": "Flexera", "source_title": "Flexera 2024 State of the Cloud Report", "source_url": "https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2024.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2024-03-12", "accessed_at": "2026-10-14", "quote": "Enterprises have more complex environments but slightly lower usage rates, with 49% of workloads in public cloud and 48% of data in public cloud.", "locator": "Page 26", "derived": false, "formula": null, "headline": false, "series": "flexera-workloads-in-public-cloud-enterprise", "history": [], "notes": "Vendor survey (Flexera sells cloud cost-management software); the page-2 dataset labels Flexera 'secondary'. Respondent-estimated share of their organisation's workloads, so the remainder is NOT in public cloud (on-premises, private cloud, hosting). Enterprise = 1,000+ employees. Budget and waste figures from the same reports are on the data-migration page and are not repeated here. Saved copy: raw/on-premises-and-cloud-share/flexera-state-of-the-cloud-2024.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2024-enterprises-49pct-of-workloads-in-public-cloud", "citation_text": "49% of enterprise workloads ran in public cloud in Flexera's 2024 State of the Cloud survey of 753 cloud decision-makers (Flexera, 2024). Source: Flexera, \"Flexera 2024 State of the Cloud Report\" (https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2024.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2024-enterprises-49pct-of-workloads-in-public-cloud." }, { "id": "flexera-2026-enterprises-54pct-of-workloads-in-public-cloud-up-from-52pct", "family": "on-premises-and-cloud-share", "statement": "54% of enterprise workloads ran in public cloud in 2026, up from 52% a year earlier, so 46% still ran outside it, in Flexera's 2026 State of the Cloud survey of 753 cloud decision-makers (Flexera, 2026).", "short_statement": "Enterprises ran **54%** of their workloads in public cloud in 2026, so 46% still ran outside it.", "short_refs": null, "value": 54, "unit": "% of enterprise workloads (respondent estimate)", "display_value": "54%", "display_label": "Flexera State of the Cloud 2026, 753 cloud decision-makers", "display_hook": null, "row_label": "2026, enterprises", "publisher_short": null, "geography": "Worldwide", "period": "2025-Q4", "population": "Cloud decision-makers and users at organisations with 100 to 10,000+ employees (Flexera State of the Cloud survey)", "sample_n": 753, "publisher": "Flexera", "source_title": "Flexera 2026 State of the Cloud Report", "source_url": "https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2026.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-03-18", "accessed_at": "2026-10-14", "quote": "Enterprises saw their cloud workloads grow from 52% to 54%, while SMBs experienced a substantial jump from 55% to 63% year over year.", "locator": "Pages 20-21, 'workloads running in the public cloud'", "derived": false, "formula": null, "headline": false, "series": "flexera-workloads-in-public-cloud-enterprise", "history": [ { "period": "2025", "value": 52, "source": "Flexera 2026 report (the 2025 report gives the figure only in a chart image)" } ], "notes": "The 2025 value (52%) is taken from this report; the 2025 report's own workload chart is an image without extractable figures. 46% outside public cloud is the complement (100 - 54), not a Flexera figure. Vendor survey (Flexera sells cloud cost-management software); the page-2 dataset labels Flexera 'secondary'. Respondent-estimated share of their organisation's workloads, so the remainder is NOT in public cloud (on-premises, private cloud, hosting). Enterprise = 1,000+ employees. Budget and waste figures from the same reports are on the data-migration page and are not repeated here. Saved copy: raw/on-premises-and-cloud-share/flexera-state-of-the-cloud-2026.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2026-enterprises-54pct-of-workloads-in-public-cloud-up-from-52pct", "citation_text": "54% of enterprise workloads ran in public cloud in 2026, up from 52% a year earlier, so 46% still ran outside it, in Flexera's 2026 State of the Cloud survey of 753 cloud decision-makers (Flexera, 2026). Source: Flexera, \"Flexera 2026 State of the Cloud Report\" (https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2026.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2026-enterprises-54pct-of-workloads-in-public-cloud-up-from-52pct." }, { "id": "flexera-2026-smbs-63pct-of-workloads-in-public-cloud-up-from-55pct", "family": "on-premises-and-cloud-share", "statement": "63% of SMB workloads ran in public cloud in 2026, up 8 percentage points from 55%, in Flexera's 2026 State of the Cloud survey (Flexera, 2026).", "short_statement": null, "short_refs": null, "value": 63, "unit": "% of SMB workloads (respondent estimate; SMB = under 1,000 employees)", "display_value": "63%", "display_label": "", "display_hook": null, "row_label": "2026, small and medium businesses", "publisher_short": null, "geography": "Worldwide", "period": "2025-Q4", "population": "Cloud decision-makers and users at organisations with 100 to 10,000+ employees (Flexera State of the Cloud survey)", "sample_n": 753, "publisher": "Flexera", "source_title": "Flexera 2026 State of the Cloud Report", "source_url": "https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2026.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-03-18", "accessed_at": "2026-10-14", "quote": "63% of SMBs have workloads in public cloud, an 8-percentage-point increase year over year", "locator": "Page 20 call-out", "derived": false, "formula": null, "headline": false, "series": "flexera-workloads-in-public-cloud-smb", "history": [ { "period": "2025", "value": 55 } ], "notes": "Flexera's wording reads like a share of SMBs, but the body text ('SMBs experienced a substantial jump from 55% to 63%' in cloud workloads) shows it is the share of SMB workloads. Vendor survey (Flexera sells cloud cost-management software); the page-2 dataset labels Flexera 'secondary'. Respondent-estimated share of their organisation's workloads, so the remainder is NOT in public cloud (on-premises, private cloud, hosting). Enterprise = 1,000+ employees. Budget and waste figures from the same reports are on the data-migration page and are not repeated here. Saved copy: raw/on-premises-and-cloud-share/flexera-state-of-the-cloud-2026.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2026-smbs-63pct-of-workloads-in-public-cloud-up-from-55pct", "citation_text": "63% of SMB workloads ran in public cloud in 2026, up 8 percentage points from 55%, in Flexera's 2026 State of the Cloud survey (Flexera, 2026). Source: Flexera, \"Flexera 2026 State of the Cloud Report\" (https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2026.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2026-smbs-63pct-of-workloads-in-public-cloud-up-from-55pct." }, { "id": "flexera-2025-cloud-workloads-repatriated-21pct", "family": "on-premises-and-cloud-share", "statement": "21% of cloud-based workloads and 21% of cloud-based data had been repatriated to non-cloud environments according to the 759 respondents to Flexera's 2025 State of the Cloud survey (Flexera, 2025).", "short_statement": null, "short_refs": null, "value": 21, "unit": "% of cloud-based workloads repatriated (respondent-reported share)", "display_value": "21%", "display_label": "759 cloud decision-makers surveyed by Flexera, winter 2024", "display_hook": null, "row_label": "2025: cloud workloads already moved back", "publisher_short": null, "geography": "Worldwide", "period": "2024-Q4", "population": "Cloud decision-makers and users at organisations with 100 to 10,000+ employees (Flexera State of the Cloud survey)", "sample_n": 759, "publisher": "Flexera", "source_title": "Flexera 2025 State of the Cloud Report", "source_url": "https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2025.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2025-03-19", "accessed_at": "2026-10-14", "quote": "We've recently begun asking about workload and data repatriation. Respondents indicated one fifth of both workloads and data have been repatriated (21%).", "locator": "Report page 20", "derived": false, "formula": null, "headline": false, "series": "flexera-workloads-repatriated", "history": [], "notes": "Reused id from the data-migration page (family cloud-migration, where it is labelled 'secondary'); re-fetched and re-quoted 2026-10-14. A share of workloads, not of organisations. Vendor survey (Flexera sells cloud cost-management software); the page-2 dataset labels Flexera 'secondary'. Respondent-estimated share of their organisation's workloads, so the remainder is NOT in public cloud (on-premises, private cloud, hosting). Enterprise = 1,000+ employees. Budget and waste figures from the same reports are on the data-migration page and are not repeated here. Saved copy: raw/on-premises-and-cloud-share/flexera-state-of-the-cloud-2025.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2025-cloud-workloads-repatriated-21pct", "citation_text": "21% of cloud-based workloads and 21% of cloud-based data had been repatriated to non-cloud environments according to the 759 respondents to Flexera's 2025 State of the Cloud survey (Flexera, 2025). Source: Flexera, \"Flexera 2025 State of the Cloud Report\" (https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2025.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2025-cloud-workloads-repatriated-21pct." }, { "id": "flexera-2026-repatriated-workloads-and-data-up-2-points", "family": "on-premises-and-cloud-share", "statement": "2 percentage points was the year-over-year rise in the share of cloud-based workloads and of cloud-based data that organizations had repatriated in Flexera's 2026 State of the Cloud survey of 753 (Flexera, 2026).", "short_statement": null, "short_refs": null, "value": 2, "unit": "percentage-point change in the repatriated share of workloads and data, year over year", "display_value": "+2 pts", "display_label": "", "display_hook": null, "row_label": "2026: change in workloads moved back", "publisher_short": null, "geography": "Worldwide", "period": "2025-Q4", "population": "Cloud decision-makers and users at organisations with 100 to 10,000+ employees (Flexera State of the Cloud survey)", "sample_n": 753, "publisher": "Flexera", "source_title": "Flexera 2026 State of the Cloud Report", "source_url": "https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2026.pdf", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-03-18", "accessed_at": "2026-10-14", "quote": "The percentage of cloud-based workloads and cloud-based data that organizations have repatriated each increased by 2 percentage points year over year", "locator": "Report page 23", "derived": false, "formula": null, "headline": false, "series": "flexera-workloads-repatriated", "history": [], "notes": "Reused id from the data-migration page. The text gives the change, not the level; applied to the 2025 level of 21% it implies about 23%, a derivation, not a published figure. Vendor survey (Flexera sells cloud cost-management software); the page-2 dataset labels Flexera 'secondary'. Respondent-estimated share of their organisation's workloads, so the remainder is NOT in public cloud (on-premises, private cloud, hosting). Enterprise = 1,000+ employees. Budget and waste figures from the same reports are on the data-migration page and are not repeated here. Saved copy: raw/on-premises-and-cloud-share/flexera-state-of-the-cloud-2026.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2026-repatriated-workloads-and-data-up-2-points", "citation_text": "2 percentage points was the year-over-year rise in the share of cloud-based workloads and of cloud-based data that organizations had repatriated in Flexera's 2026 State of the Cloud survey of 753 (Flexera, 2026). Source: Flexera, \"Flexera 2026 State of the Cloud Report\" (https://resources.flexera.com/web/pdf/Flexera-State-of-the-Cloud-Report-2026.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#flexera-2026-repatriated-workloads-and-data-up-2-points." }, { "id": "uptime-2024-07-2020-survey-42pct-of-workloads-off-premises", "family": "on-premises-and-cloud-share", "statement": "42% of enterprise IT workloads were hosted off-premises in 2020, so 58% still ran in organisations' own facilities, in Uptime Institute's 2020 Global Data Center Survey (n=390) as its 2024 report recalls it (Uptime Institute, 2024).", "short_statement": null, "short_refs": null, "value": 42, "unit": "% of IT workloads hosted off-premises (respondent average)", "display_value": "42%", "display_label": "", "display_hook": null, "row_label": "2020: off-premises", "publisher_short": null, "geography": "Worldwide", "period": "2020", "population": "Enterprise IT and data center managers answering Uptime Institute's annual Global Data Center Survey (organisations that own or use data centers)", "sample_n": 390, "publisher": "Uptime Institute", "source_title": "Uptime Institute Global Data Center Survey 2024", "source_url": "https://uptimeinstitute.com/uptime_assets/7425ec68d479c5d78a743df94a79b114ed9f9c73f13b6460949d2b8e73373209-GA-2024-07-uptime-institute-global-data-center-survey-results-2024.pdf", "source_type": "secondary", "source_access": "open", "published_at": "2024-07-01", "accessed_at": "2026-10-14", "quote": "In the 2020 Uptime Institute data center survey, respondents reported that, on average, 42% of their organization's IT workloads were hosted off-premises", "locator": "Section 'Cloud and provisioning: Off-premises locations dominate IT' (n=390 from Figure 13)", "derived": false, "formula": null, "headline": false, "series": "uptime-workloads-off-premises", "history": [], "notes": "published_at: July 2024 report (month only; day set to 01). Uptime's respondents are data-center owners and operators, so small firms without data centers are under-represented (Uptime says so). 'Off-premises' in 2024-2025 = everything outside the enterprise's own data centers; the 2026 report splits out server closets and IT rooms (non-data-center on-premises IT) as a third category. Saved copy: raw/on-premises-and-cloud-share/uptime-2024-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2024-07-2020-survey-42pct-of-workloads-off-premises", "citation_text": "42% of enterprise IT workloads were hosted off-premises in 2020, so 58% still ran in organisations' own facilities, in Uptime Institute's 2020 Global Data Center Survey (n=390) as its 2024 report recalls it (Uptime Institute, 2024). Source: Uptime Institute, \"Uptime Institute Global Data Center Survey 2024\" (https://uptimeinstitute.com/uptime_assets/7425ec68d479c5d78a743df94a79b114ed9f9c73f13b6460949d2b8e73373209-GA-2024-07-uptime-institute-global-data-center-survey-results-2024.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2024-07-2020-survey-42pct-of-workloads-off-premises." }, { "id": "uptime-2024-07-55pct-of-workloads-off-premises", "family": "on-premises-and-cloud-share", "statement": "55% of enterprise IT workloads were hosted off-premises in 2024, up from 42% in 2020, in Uptime Institute's 2024 Global Data Center Survey (n=314) (Uptime Institute, 2024).", "short_statement": null, "short_refs": null, "value": 55, "unit": "% of IT workloads hosted off-premises (respondent average)", "display_value": "55%", "display_label": "", "display_hook": null, "row_label": "2024: off-premises", "publisher_short": null, "geography": "Worldwide", "period": "2024", "population": "Enterprise IT and data center managers answering Uptime Institute's annual Global Data Center Survey (organisations that own or use data centers)", "sample_n": 314, "publisher": "Uptime Institute", "source_title": "Uptime Institute Global Data Center Survey 2024", "source_url": "https://uptimeinstitute.com/uptime_assets/7425ec68d479c5d78a743df94a79b114ed9f9c73f13b6460949d2b8e73373209-GA-2024-07-uptime-institute-global-data-center-survey-results-2024.pdf", "source_type": "secondary", "source_access": "open", "published_at": "2024-07-01", "accessed_at": "2026-10-14", "quote": "More than half of workloads (55%) are now off-premises, continuing the gradual trend of recent years. Many continue to maintain their own data centers.", "locator": "Key findings (page 2); Figure 13", "derived": false, "formula": null, "headline": false, "series": "uptime-workloads-off-premises", "history": [], "notes": "Forecast in the same report: 58% off-premises by 2026. Uptime's respondents are data-center owners and operators, so small firms without data centers are under-represented (Uptime says so). 'Off-premises' in 2024-2025 = everything outside the enterprise's own data centers; the 2026 report splits out server closets and IT rooms (non-data-center on-premises IT) as a third category. Saved copy: raw/on-premises-and-cloud-share/uptime-2024-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2024-07-55pct-of-workloads-off-premises", "citation_text": "55% of enterprise IT workloads were hosted off-premises in 2024, up from 42% in 2020, in Uptime Institute's 2024 Global Data Center Survey (n=314) (Uptime Institute, 2024). Source: Uptime Institute, \"Uptime Institute Global Data Center Survey 2024\" (https://uptimeinstitute.com/uptime_assets/7425ec68d479c5d78a743df94a79b114ed9f9c73f13b6460949d2b8e73373209-GA-2024-07-uptime-institute-global-data-center-survey-results-2024.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2024-07-55pct-of-workloads-off-premises." }, { "id": "uptime-2023-07-share-of-workloads-in-corporate-on-premises-facilities-below-half", "family": "on-premises-and-cloud-share", "statement": "Less than half of enterprise IT workloads ran in corporate, on-premises facilities for the first time in Uptime Institute's 2023 Global Data Center Survey (n=309) (Uptime Institute, 2023).", "short_statement": null, "short_refs": null, "value": null, "unit": "share of IT workloads in corporate on-premises facilities (stated as 'below half')", "display_value": "below half", "display_label": "", "display_hook": null, "row_label": "2023: in corporate, on-premises facilities", "publisher_short": null, "geography": "Worldwide", "period": "2023", "population": "Enterprise IT and data center managers answering Uptime Institute's annual Global Data Center Survey (organisations that own or use data centers)", "sample_n": 309, "publisher": "Uptime Institute", "source_title": "Uptime Institute Global Data Center Survey 2023 (executive summary)", "source_url": "https://uptimeinstitute.com/uptime_assets/74fd7ed906aad2b6df2a96dfeb803dde83d52ee3dffdd8ae41a50fab4e23182f-uptime-institute_global-data-center-survey-2023_executive-summary.pdf", "source_type": "secondary", "source_access": "open", "published_at": "2023-07-01", "accessed_at": "2026-10-14", "quote": "The share of workloads placed in corporate, on-premises facilities has fallen below half", "locator": "Key findings, page 2", "derived": false, "formula": null, "headline": false, "series": "uptime-workloads-in-corporate-data-centers", "history": [], "notes": "CIO.com (January 2025) gives the 2023 value as 48% (separate restatement record). published_at: July 2023 (month only). Uptime's respondents are data-center owners and operators, so small firms without data centers are under-represented (Uptime says so). 'Off-premises' in 2024-2025 = everything outside the enterprise's own data centers; the 2026 report splits out server closets and IT rooms (non-data-center on-premises IT) as a third category. Saved copy: raw/on-premises-and-cloud-share/uptime-2023-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2023-07-share-of-workloads-in-corporate-on-premises-facilities-below-half", "citation_text": "Less than half of enterprise IT workloads ran in corporate, on-premises facilities for the first time in Uptime Institute's 2023 Global Data Center Survey (n=309) (Uptime Institute, 2023). Source: Uptime Institute, \"Uptime Institute Global Data Center Survey 2023 (executive summary)\" (https://uptimeinstitute.com/uptime_assets/74fd7ed906aad2b6df2a96dfeb803dde83d52ee3dffdd8ae41a50fab4e23182f-uptime-institute_global-data-center-survey-2023_executive-summary.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2023-07-share-of-workloads-in-corporate-on-premises-facilities-below-half." }, { "id": "uptime-2025-07-45pct-of-workloads-in-corporate-data-centers", "family": "on-premises-and-cloud-share", "statement": "45% of enterprise IT workloads still ran in corporate data centers in 2025, the most common single venue, with 55% off-premises, in Uptime Institute's 2025 Global Data Center Survey (n=291) (Uptime Institute, 2025).", "short_statement": null, "short_refs": null, "value": 45, "unit": "% of IT workloads in enterprise-owned data centers (respondent average)", "display_value": "45%", "display_label": "Uptime Institute Global Data Center Survey 2025", "display_hook": null, "row_label": "2025: in corporate data centres", "publisher_short": null, "geography": "Worldwide", "period": "2025", "population": "Enterprise IT and data center managers answering Uptime Institute's annual Global Data Center Survey (organisations that own or use data centers)", "sample_n": 291, "publisher": "Uptime Institute", "source_title": "Uptime Institute Global Data Center Survey 2025", "source_url": "https://uptimeinstitute.com/uptime_assets/cec7166957f7f529e48073bfcb5b0e99bf0dde906aa263aa7e834d33601db929-GA-2025-07-uptime-institute-global-data-center-survey-results-2025.pdf", "source_type": "secondary", "source_access": "open", "published_at": "2025-07-01", "accessed_at": "2026-10-14", "quote": "Enterprises continue to adopt hybrid IT strategies, but on-premises data centers remain foundational, with 45% of IT workloads still residing in corporate facilities.", "locator": "Key findings (page 2); section 'The future remains hybrid', Figure 13", "derived": false, "formula": null, "headline": false, "series": "uptime-workloads-in-corporate-data-centers", "history": [], "notes": "Same report: 'The proportion of IT workloads hosted remotely in off-premises facilities in 2025 remains unchanged from last year (55%), with a modest increase to 58% anticipated for 2027'. published_at: July 2025 (month only). Uptime's respondents are data-center owners and operators, so small firms without data centers are under-represented (Uptime says so). 'Off-premises' in 2024-2025 = everything outside the enterprise's own data centers; the 2026 report splits out server closets and IT rooms (non-data-center on-premises IT) as a third category. Saved copy: raw/on-premises-and-cloud-share/uptime-2025-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2025-07-45pct-of-workloads-in-corporate-data-centers", "citation_text": "45% of enterprise IT workloads still ran in corporate data centers in 2025, the most common single venue, with 55% off-premises, in Uptime Institute's 2025 Global Data Center Survey (n=291) (Uptime Institute, 2025). Source: Uptime Institute, \"Uptime Institute Global Data Center Survey 2025\" (https://uptimeinstitute.com/uptime_assets/cec7166957f7f529e48073bfcb5b0e99bf0dde906aa263aa7e834d33601db929-GA-2025-07-uptime-institute-global-data-center-survey-results-2025.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2025-07-45pct-of-workloads-in-corporate-data-centers." }, { "id": "uptime-2026-07-third-party-venues-46pct-overtake-enterprise-owned-44pct", "family": "on-premises-and-cloud-share", "statement": "46% of enterprise IT workloads ran in third-party venues (colocation, cloud, hosting, SaaS) in 2026 against 44% in enterprise-owned data centers, the first time third parties held the larger share in Uptime Institute's survey history (Uptime Institute, 2026).", "short_statement": "**44%** of enterprise workloads still ran in enterprise-owned data centres in 2026, with third-party venues at 46% (Uptime Institute, 2026).", "short_refs": null, "value": 46, "unit": "% of IT workloads in third-party facilities (respondent average)", "display_value": "46% vs 44%", "display_label": "Uptime Institute Global Data Center Survey 2026 (46% vs 44% of workloads)", "display_hook": null, "row_label": "2026: in third-party venues against enterprise-owned data centres", "publisher_short": null, "geography": "Worldwide", "period": "2026", "population": "Enterprise IT and data center managers answering Uptime Institute's annual Global Data Center Survey (organisations that own or use data centers)", "sample_n": 295, "publisher": "Uptime Institute", "source_title": "Uptime Institute Global Data Center Survey 2026", "source_url": "https://uptimeinstitute.com/uptime_assets/77a6191bef6c85cb4ac9bfb169ddc313cae517030b48709697b1f80bc10edc90-uptime-institute-global-data-center-survey-results-2026.pdf", "source_type": "secondary", "source_access": "open", "published_at": "2026-07-01", "accessed_at": "2026-10-14", "quote": "Third-party data center facilities and services account for 46% of IT workloads in 2026, compared with 44% in enterprise-owned corporate data centers. This is the first time in Uptime's annual survey history", "locator": "Section 'Workload placement: Most corporate IT is off premises', Figure 15 (n=295)", "derived": false, "formula": null, "headline": true, "series": "uptime-workloads-in-corporate-data-centers", "history": [], "notes": "The remaining ~10% is server closets and IT rooms (non-data-center on-premises IT), shown separately from 2026, so on-premises IT overall is still about 54%. Edge and micro data centers are counted as enterprise-owned. published_at: July 2026 (month only); Network World reported it on 30 July 2026. Uptime's respondents are data-center owners and operators, so small firms without data centers are under-represented (Uptime says so). 'Off-premises' in 2024-2025 = everything outside the enterprise's own data centers; the 2026 report splits out server closets and IT rooms (non-data-center on-premises IT) as a third category. Saved copy: raw/on-premises-and-cloud-share/uptime-2026-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2026-07-third-party-venues-46pct-overtake-enterprise-owned-44pct", "citation_text": "46% of enterprise IT workloads ran in third-party venues (colocation, cloud, hosting, SaaS) in 2026 against 44% in enterprise-owned data centers, the first time third parties held the larger share in Uptime Institute's survey history (Uptime Institute, 2026). Source: Uptime Institute, \"Uptime Institute Global Data Center Survey 2026\" (https://uptimeinstitute.com/uptime_assets/77a6191bef6c85cb4ac9bfb169ddc313cae517030b48709697b1f80bc10edc90-uptime-institute-global-data-center-survey-results-2026.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2026-07-third-party-venues-46pct-overtake-enterprise-owned-44pct." }, { "id": "networkworld-2026-07-30-uptime-expects-third-party-48pct-vs-enterprise-42pct-by-2028", "family": "on-premises-and-cloud-share", "statement": "48% versus 42% is the gap Uptime Institute expects between third-party venues and enterprise-owned data centers by 2028, as Network World reported the 2026 Global Data Center Survey of more than 1,600 participants (Network World, 2026).", "short_statement": null, "short_refs": null, "value": 48, "unit": "% of IT workloads in third-party venues (forecast, 2028)", "display_value": "48% vs 42% (2028 forecast)", "display_label": "", "display_hook": null, "row_label": "2028 forecast: third-party venues against enterprise-owned", "publisher_short": null, "geography": "Worldwide", "period": "2028", "population": "Enterprise IT and data center managers answering Uptime Institute's annual Global Data Center Survey (organisations that own or use data centers)", "sample_n": 1600, "publisher": "Network World (Uptime Institute survey)", "source_title": "Corporate data centers keep losing workload share to colocation and cloud providers", "source_url": "https://www.networkworld.com/article/4203054/most-corporate-it-is-off-premises-ai-is-reshaping-infrastructure-uptime-reports.html", "source_type": "secondary", "source_access": "open", "published_at": "2026-07-30", "accessed_at": "2026-10-14", "quote": "Uptime expects the gap to widen to 48% versus 42% by 2028, although it says enterprise facilities will remain a key part of hybrid", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "uptime-workloads-in-corporate-data-centers", "history": [], "notes": "Survey conducted April-May 2026; more than 1,600 participants, of whom more than 800 data center owners and operators (same article). Forecast, not a measurement. Uptime's respondents are data-center owners and operators, so small firms without data centers are under-represented (Uptime says so). 'Off-premises' in 2024-2025 = everything outside the enterprise's own data centers; the 2026 report splits out server closets and IT rooms (non-data-center on-premises IT) as a third category. Saved copy: raw/on-premises-and-cloud-share/networkworld-2026-07-uptime-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2026-07-30-uptime-expects-third-party-48pct-vs-enterprise-42pct-by-2028", "citation_text": "48% versus 42% is the gap Uptime Institute expects between third-party venues and enterprise-owned data centers by 2028, as Network World reported the 2026 Global Data Center Survey of more than 1,600 participants (Network World, 2026). Source: Network World (Uptime Institute survey), \"Corporate data centers keep losing workload share to colocation and cloud providers\" (https://www.networkworld.com/article/4203054/most-corporate-it-is-off-premises-ai-is-reshaping-infrastructure-uptime-reports.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#networkworld-2026-07-30-uptime-expects-third-party-48pct-vs-enterprise-42pct-by-2028." }, { "id": "ciodive-2017-05-02-uptime-65pct-of-workloads-in-enterprise-owned-data-centers-since-2014", "family": "on-premises-and-cloud-share", "statement": "65% of enterprise IT workloads ran in enterprise-owned or operated data centers in 2017, a share stable since 2014, in Uptime Institute's 2017 Data Center Industry Survey of 1,000 data center professionals as CIO Dive reported it (CIO Dive, 2017).", "short_statement": null, "short_refs": null, "value": 65, "unit": "% of IT workloads in enterprise-owned/operated data centers", "display_value": "65%", "display_label": "", "display_hook": null, "row_label": "2017: in enterprise-owned data centres (via CIO Dive)", "publisher_short": null, "geography": "Worldwide", "period": "2017", "population": "Enterprise IT and data center managers answering Uptime Institute's annual Global Data Center Survey (organisations that own or use data centers)", "sample_n": 1000, "publisher": "CIO Dive (Uptime Institute survey)", "source_title": "Companies rave about the cloud, but majority of workloads remain on-prem", "source_url": "https://www.ciodive.com/news/companies-rave-about-the-cloud-but-majority-of-workloads-remain-on-prem/441698/", "source_type": "secondary", "source_access": "open", "published_at": "2017-05-02", "accessed_at": "2026-10-14", "quote": "The study also found the percentage of workloads residing in enterprise-owned/operated data centers has remained stable at 65% since 2014.", "locator": "Third paragraph", "derived": false, "formula": null, "headline": false, "series": "uptime-workloads-in-corporate-data-centers", "history": [], "notes": "Same article: 22% in colocation or multi-tenant providers, 13% in the cloud. Uptime's own 2017 release was not recovered from Wayback. Uptime's respondents are data-center owners and operators, so small firms without data centers are under-represented (Uptime says so). 'Off-premises' in 2024-2025 = everything outside the enterprise's own data centers; the 2026 report splits out server closets and IT rooms (non-data-center on-premises IT) as a third category. Saved copy: raw/on-premises-and-cloud-share/ciodive-2017-uptime-65pct.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#ciodive-2017-05-02-uptime-65pct-of-workloads-in-enterprise-owned-data-centers-since-2014", "citation_text": "65% of enterprise IT workloads ran in enterprise-owned or operated data centers in 2017, a share stable since 2014, in Uptime Institute's 2017 Data Center Industry Survey of 1,000 data center professionals as CIO Dive reported it (CIO Dive, 2017). Source: CIO Dive (Uptime Institute survey), \"Companies rave about the cloud, but majority of workloads remain on-prem\" (https://www.ciodive.com/news/companies-rave-about-the-cloud-but-majority-of-workloads-remain-on-prem/441698/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#ciodive-2017-05-02-uptime-65pct-of-workloads-in-enterprise-owned-data-centers-since-2014." }, { "id": "cio-2025-01-30-restates-uptime-58pct-2020-48pct-2023-workloads-in-corporate-data-centers", "family": "on-premises-and-cloud-share", "statement": "48% of enterprise IT workloads were hosted in corporate data centers in 2023, down from 58% in 2020, as CIO.com restated Uptime Institute's surveys (CIO.com, 2025).", "short_statement": null, "short_refs": null, "value": 48, "unit": "% of IT workloads in corporate data centers (as restated)", "display_value": "48% (2023), 58% (2020)", "display_label": "", "display_hook": null, "row_label": "2023: in corporate data centres (via CIO.com)", "publisher_short": null, "geography": "Worldwide", "period": "2023", "population": "Enterprise IT and data center managers answering Uptime Institute's annual Global Data Center Survey (organisations that own or use data centers)", "sample_n": null, "publisher": "CIO.com (Uptime Institute survey)", "source_title": "5 reasons the enterprise data center will never die", "source_url": "https://www.cio.com/article/3808734/5-reasons-the-enterprise-data-center-will-never-die.html", "source_type": "secondary", "source_access": "open", "published_at": "2025-01-30", "accessed_at": "2026-10-14", "quote": "The Uptime Institute reports that in 2020, 58% of enterprise IT workloads were hosted in corporate data centers. In 2023, this percentage fell to 48%", "locator": "Section on Synergy and Uptime data", "derived": false, "formula": null, "headline": false, "series": "uptime-workloads-in-corporate-data-centers", "history": [ { "period": "2020", "value": 58 } ], "notes": "Consistent with Uptime's own figures (2020: 42% off-premises; 2023: 'below half' in corporate facilities); the 58% and 48% values appear only in Uptime's chart images, so this restatement is the citable text. Uptime's respondents are data-center owners and operators, so small firms without data centers are under-represented (Uptime says so). 'Off-premises' in 2024-2025 = everything outside the enterprise's own data centers; the 2026 report splits out server closets and IT rooms (non-data-center on-premises IT) as a third category. Saved copy: raw/on-premises-and-cloud-share/cio-2025-enterprise-data-center-never-die.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cio-2025-01-30-restates-uptime-58pct-2020-48pct-2023-workloads-in-corporate-data-centers", "citation_text": "48% of enterprise IT workloads were hosted in corporate data centers in 2023, down from 58% in 2020, as CIO.com restated Uptime Institute's surveys (CIO.com, 2025). Source: CIO.com (Uptime Institute survey), \"5 reasons the enterprise data center will never die\" (https://www.cio.com/article/3808734/5-reasons-the-enterprise-data-center-will-never-die.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cio-2025-01-30-restates-uptime-58pct-2020-48pct-2023-workloads-in-corporate-data-centers." }, { "id": "uptime-2021-09-about-70pct-of-operators-had-not-repatriated-workloads-from-public-cloud", "family": "on-premises-and-cloud-share", "statement": "About 70% of data center owners and operators had not moved any workloads back from a public cloud in the past year, in Uptime Institute's 2021 Global Data Center Survey (n=677) (Uptime Institute, 2021).", "short_statement": null, "short_refs": null, "value": 70, "unit": "% of owners and operators (approximate, 'about 70%')", "display_value": "about 70% (32% had)", "display_label": "", "display_hook": null, "row_label": "2021: operators that had not moved workloads back from public cloud", "publisher_short": null, "geography": "Worldwide", "period": "2021", "population": "Data center owners and operators answering Uptime Institute's 2021 Global Data Center Survey", "sample_n": 677, "publisher": "Uptime Institute", "source_title": "Uptime Institute Global Data Center Survey 2021", "source_url": "https://uptimeinstitute.com/uptime_assets/4d10650a2a92c06a10e2c70e320498710fed2ef3b402aa82fe7946fae3887055-2021-data-center-industry-survey.pdf", "source_type": "secondary", "source_access": "open", "published_at": "2021-09-01", "accessed_at": "2026-10-14", "quote": "About 70% of owners and operators surveyed have not repatriated any workloads from a public cloud, as shown in Figure 12. This finding is in line with our previous years' survey results.", "locator": "Page 17, 'Public cloud repatriation (or not)', Figure 12", "derived": false, "formula": null, "headline": false, "series": "uptime-repatriation", "history": [], "notes": "Figure 12 shows 32% 'YES' (moved workloads or data from public cloud to private cloud or on-premises/colocation in the past year); top reason cost (10%), then regulatory compliance (7%). Actual security breaches drove 1%. Uptime's respondents are data-center owners and operators, so small firms without data centers are under-represented (Uptime says so). 'Off-premises' in 2024-2025 = everything outside the enterprise's own data centers; the 2026 report splits out server closets and IT rooms (non-data-center on-premises IT) as a third category. Saved copy: raw/on-premises-and-cloud-share/uptime-2021-survey.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2021-09-about-70pct-of-operators-had-not-repatriated-workloads-from-public-cloud", "citation_text": "About 70% of data center owners and operators had not moved any workloads back from a public cloud in the past year, in Uptime Institute's 2021 Global Data Center Survey (n=677) (Uptime Institute, 2021). Source: Uptime Institute, \"Uptime Institute Global Data Center Survey 2021\" (https://uptimeinstitute.com/uptime_assets/4d10650a2a92c06a10e2c70e320498710fed2ef3b402aa82fe7946fae3887055-2021-data-center-industry-survey.pdf). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#uptime-2021-09-about-70pct-of-operators-had-not-repatriated-workloads-from-public-cloud." }, { "id": "sdxcentral-2016-09-02-451-research-41pct-of-enterprise-workloads-in-cloud-60pct-by-mid-2018", "family": "on-premises-and-cloud-share", "statement": "41% of enterprise workloads ran in some form of public or private cloud in mid-2016, and respondents expected 60% by mid-2018, in 451 Research's survey of more than 1,200 IT professionals as SDxCentral reported it (451 Research via SDxCentral, 2016).", "short_statement": null, "short_refs": null, "value": 41, "unit": "% of enterprise workloads in public or private cloud (including on-premises private cloud)", "display_value": "41% (60% expected by mid-2018)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2016-06", "population": "IT professionals surveyed by 451 Research (Voice of the Enterprise, May-June 2016)", "sample_n": 1200, "publisher": "SDxCentral (451 Research survey)", "source_title": "60% of Enterprise Workloads are Expected to Run in the Cloud by 2018", "source_url": "https://www.sdxcentral.com/news/60-of-enterprise-workloads-are-expected-to-run-in-the-cloud-by-2018/", "source_type": "secondary", "source_access": "open", "published_at": "2016-09-02", "accessed_at": "2026-10-14", "quote": "451 Research's latest survey shows that 41 percent of all enterprise workloads are currently running in some type of public or private cloud, and by mid-2018, that number is expected to rise to 60 percent.", "locator": "First paragraph", "derived": false, "formula": null, "headline": false, "series": "451-research-workloads-in-cloud", "history": [], "notes": "Includes on-premises private cloud (14% of applications), so 'cloud' here is not the same as off-premises. Compare: Uptime's 2018-2020 surveys still found about 58-65% of workloads in enterprise-owned data centers. 451 Research's own release (now S&P Global) was not recovered. Saved copy: raw/on-premises-and-cloud-share/sdxcentral-2016-451-research-workloads.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#sdxcentral-2016-09-02-451-research-41pct-of-enterprise-workloads-in-cloud-60pct-by-mid-2018", "citation_text": "41% of enterprise workloads ran in some form of public or private cloud in mid-2016, and respondents expected 60% by mid-2018, in 451 Research's survey of more than 1,200 IT professionals as SDxCentral reported it (451 Research via SDxCentral, 2016). Source: SDxCentral (451 Research survey), \"60% of Enterprise Workloads are Expected to Run in the Cloud by 2018\" (https://www.sdxcentral.com/news/60-of-enterprise-workloads-are-expected-to-run-in-the-cloud-by-2018/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#sdxcentral-2016-09-02-451-research-41pct-of-enterprise-workloads-in-cloud-60pct-by-mid-2018." }, { "id": "cio-2025-01-30-restates-idc-2024-06-about-80pct-expect-some-repatriation-within-12-months", "family": "on-premises-and-cloud-share", "statement": "About 80% of 2,250 IT decision makers expected some repatriation of compute and storage resources within 12 months in IDC's June 2024 survey, as CIO.com reported it (IDC via CIO.com, 2025).", "short_statement": null, "short_refs": null, "value": 80, "unit": "% of IT decision makers (approximate, 'about 80%')", "display_value": "about 80%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2024-06", "population": "IT decision makers surveyed by IDC (June 2024)", "sample_n": 2250, "publisher": "CIO.com (IDC survey)", "source_title": "5 reasons the enterprise data center will never die", "source_url": "https://www.cio.com/article/3808734/5-reasons-the-enterprise-data-center-will-never-die.html", "source_type": "secondary", "source_access": "open", "published_at": "2025-01-30", "accessed_at": "2026-10-14", "quote": "According to a June 2024 IDC survey, about 80% of 2,250 IT decision-maker respondents “expected to see some level of repatriation of compute and storage resources in the next 12 months.”", "locator": "Section on cloud repatriation", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "An expectation of 'some level' of repatriation, not a share of workloads moved; not comparable with Flexera's 21% of workloads repatriated or Uptime's 2021 32% of operators. IDC's own survey document is paywalled and was not fetched. Saved copy: raw/on-premises-and-cloud-share/cio-2025-enterprise-data-center-never-die.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cio-2025-01-30-restates-idc-2024-06-about-80pct-expect-some-repatriation-within-12-months", "citation_text": "About 80% of 2,250 IT decision makers expected some repatriation of compute and storage resources within 12 months in IDC's June 2024 survey, as CIO.com reported it (IDC via CIO.com, 2025). Source: CIO.com (IDC survey), \"5 reasons the enterprise data center will never die\" (https://www.cio.com/article/3808734/5-reasons-the-enterprise-data-center-will-never-die.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cio-2025-01-30-restates-idc-2024-06-about-80pct-expect-some-repatriation-within-12-months." }, { "id": "gartner-2018-07-26-planning-assumption-80pct-of-enterprises-shut-traditional-data-center-by-2025", "family": "on-premises-and-cloud-share", "statement": "80% of enterprises would have shut down their traditional data center by 2025, against 10% in 2018, was Gartner analyst Dave Cappuccio's planning assumption published in July 2018 (Gartner, 2018).", "short_statement": null, "short_refs": null, "value": 80, "unit": "% of enterprises (prediction for 2025)", "display_value": "80% by 2025 (10% in 2018)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025 (prediction made 2018-07)", "population": "Enterprises (Gartner planning assumption)", "sample_n": null, "publisher": "Gartner", "source_title": "The Data Center is Dead", "source_url": "https://blogs.gartner.com/david_cappuccio/2018/07/26/the-data-center-is-dead/", "source_type": "secondary", "source_access": "open", "published_at": "2018-07-26", "accessed_at": "2026-10-14", "quote": "Our planning assumption: By 2025, 80% of enterprises will have shut down their traditional data center, versus 10% today.", "locator": "Blog post, fourth paragraph (Wayback snapshot 20191207143754; the live page is behind a bot check)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "A prediction, not a measurement. Against the outcome: Uptime's 2025 survey still found 45% of enterprise IT workloads in corporate data centers, and Gartner's own Lovelock said in 2025 'The enterprise data center is here to stay' (CIO.com). Gartner has not published a scored outcome of the assumption that we found. Saved copy: raw/on-premises-and-cloud-share/wayback-gartner-blog-2018-07-26-data-center-is-dead.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#gartner-2018-07-26-planning-assumption-80pct-of-enterprises-shut-traditional-data-center-by-2025", "citation_text": "80% of enterprises would have shut down their traditional data center by 2025, against 10% in 2018, was Gartner analyst Dave Cappuccio's planning assumption published in July 2018 (Gartner, 2018). Source: Gartner, \"The Data Center is Dead\" (https://blogs.gartner.com/david_cappuccio/2018/07/26/the-data-center-is-dead/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#gartner-2018-07-26-planning-assumption-80pct-of-enterprises-shut-traditional-data-center-by-2025." }, { "id": "cio-2025-01-30-restates-gartner-80pct-data-center-prediction-as-2019-and-everything-to-cloud", "family": "on-premises-and-cloud-share", "statement": "80% of enterprises would shut down their traditional data centers and move everything to the cloud by 2025, as CIO.com restated Gartner's prediction, dating it to 2019 and adding 'moved everything to the cloud', which the July 2018 original does not say (CIO.com, 2025).", "short_statement": null, "short_refs": null, "value": 80, "unit": "restated prediction (% of enterprises by 2025)", "display_value": "80% (restated)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025 (prediction)", "population": "Enterprises (Gartner planning assumption, as restated)", "sample_n": null, "publisher": "CIO.com", "source_title": "5 reasons the enterprise data center will never die", "source_url": "https://www.cio.com/article/3808734/5-reasons-the-enterprise-data-center-will-never-die.html", "source_type": "secondary", "source_access": "open", "published_at": "2025-01-30", "accessed_at": "2026-10-14", "quote": "In 2019, Gartner analyst Dave Cappuccio issued the headline-grabbing prediction that by 2025, 80% of enterprises will have shut down their traditional data centers and moved everything to the cloud.", "locator": "Opening paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Drift: the original is a 26 July 2018 Gartner blog post; it speaks of shutting down the traditional data center in favour of colocation, interconnect, cloud and edge, not of moving everything to the cloud. Saved copy: raw/on-premises-and-cloud-share/cio-2025-enterprise-data-center-never-die.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cio-2025-01-30-restates-gartner-80pct-data-center-prediction-as-2019-and-everything-to-cloud", "citation_text": "80% of enterprises would shut down their traditional data centers and move everything to the cloud by 2025, as CIO.com restated Gartner's prediction, dating it to 2019 and adding 'moved everything to the cloud', which the July 2018 original does not say (CIO.com, 2025). Source: CIO.com, \"5 reasons the enterprise data center will never die\" (https://www.cio.com/article/3808734/5-reasons-the-enterprise-data-center-will-never-die.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cio-2025-01-30-restates-gartner-80pct-data-center-prediction-as-2019-and-everything-to-cloud." }, { "id": "cio-2025-01-30-gartner-lovelock-enterprise-data-center-is-here-to-stay", "family": "on-premises-and-cloud-share", "statement": "Gartner's later guidance, quoted in January 2025, reverses the 2018 assumption: its distinguished VP analyst John-David Lovelock said the enterprise data center is here to stay (CIO.com, 2025).", "short_statement": null, "short_refs": null, "value": null, "unit": "qualitative analyst statement", "display_value": "'The enterprise data center is here to stay'", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-01", "population": "Enterprise data centers (Gartner analyst view)", "sample_n": null, "publisher": "CIO.com (Gartner)", "source_title": "5 reasons the enterprise data center will never die", "source_url": "https://www.cio.com/article/3808734/5-reasons-the-enterprise-data-center-will-never-die.html", "source_type": "secondary", "source_access": "open", "published_at": "2025-01-30", "accessed_at": "2026-10-14", "quote": "It's not as though the data center is going away. The enterprise data center is here to stay.", "locator": "Second paragraph (quote from John-David Lovelock, Gartner)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The same article says Gartner put 2024 global enterprise data center spending at $66 billion; that figure is not traceable to a Gartner release and is not recorded. Saved copy: raw/on-premises-and-cloud-share/cio-2025-enterprise-data-center-never-die.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cio-2025-01-30-gartner-lovelock-enterprise-data-center-is-here-to-stay", "citation_text": "Gartner's later guidance, quoted in January 2025, reverses the 2018 assumption: its distinguished VP analyst John-David Lovelock said the enterprise data center is here to stay (CIO.com, 2025). Source: CIO.com (Gartner), \"5 reasons the enterprise data center will never die\" (https://www.cio.com/article/3808734/5-reasons-the-enterprise-data-center-will-never-die.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cio-2025-01-30-gartner-lovelock-enterprise-data-center-is-here-to-stay." }, { "id": "gartner-2026-04-22-data-center-systems-spending-788-billion-2026-up-55-8pct", "family": "on-premises-and-cloud-share", "statement": "$788 billion is Gartner's forecast of worldwide spending on data center systems (servers, storage and networking) in 2026, up 55.8% from $505.6 billion in 2025, driven by hyperscale AI demand (Gartner, 2026).", "short_statement": null, "short_refs": null, "value": 787990, "unit": "million US dollars (forecast, 2026)", "display_value": "$788 billion (2026 forecast)", "display_label": "", "display_hook": null, "row_label": "Gartner: data-centre systems spending, 2026 forecast", "publisher_short": null, "geography": "Worldwide", "period": "2026", "population": "Worldwide end-user spending on data center systems (Gartner IT spending forecast)", "sample_n": null, "publisher": "Gartner", "source_title": "Gartner Forecasts Worldwide IT Spending to Grow 13.5% in 2026, Totaling $6.31 Trillion", "source_url": "https://www.gartner.com/en/newsroom/press-releases/2026-04-22-gartner-forecasts-worldwide-it-spending-to-grow-13-point-5-percent-in-2026-totaling-6-point-31-trillion-dollars", "source_type": "secondary", "source_access": "open", "published_at": "2026-04-22", "accessed_at": "2026-10-14", "quote": "Hyperscale cloud demand is fueling a sharp increase in server and data center investment, with spending on data center systems projected to surpass $788 billion in 2026", "locator": "Body text and Table 1 (Data Center Systems: 2025 505,634; growth 51.6%; 2026 787,990; growth 55.8%)", "derived": false, "formula": null, "headline": false, "series": "gartner-data-center-systems-spending", "history": [ { "period": "2025", "value": 505634 } ], "notes": "Analyst figure 1 of 2 allowed on the page. Gartner no longer publishes quarterly server shipment press releases (the last ones date from 2020); this IT spending segment is its current public server-related figure. CIO Dive (4 September 2025) restates a July 2025 Gartner forecast of $367 billion end-user spending on servers in 2025, not recorded here. Saved copy: raw/on-premises-and-cloud-share/gartner-2026-04-22-it-spending-forecast.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#gartner-2026-04-22-data-center-systems-spending-788-billion-2026-up-55-8pct", "citation_text": "$788 billion is Gartner's forecast of worldwide spending on data center systems (servers, storage and networking) in 2026, up 55.8% from $505.6 billion in 2025, driven by hyperscale AI demand (Gartner, 2026). Source: Gartner, \"Gartner Forecasts Worldwide IT Spending to Grow 13.5% in 2026, Totaling $6.31 Trillion\" (https://www.gartner.com/en/newsroom/press-releases/2026-04-22-gartner-forecasts-worldwide-it-spending-to-grow-13-point-5-percent-in-2026-totaling-6-point-31-trillion-dollars). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#gartner-2026-04-22-data-center-systems-spending-788-billion-2026-up-55-8pct." }, { "id": "idc-2026-03-12-server-market-revenue-2025-444-1-billion-up-80-4pct", "family": "on-premises-and-cloud-share", "statement": "$444.1 billion was worldwide server market revenue in 2025, up 80.4% from 2024 on AI infrastructure spending, according to IDC's Worldwide Quarterly Server Tracker (IDC, 2026).", "short_statement": null, "short_refs": null, "value": 444.1, "unit": "billion US dollars (vendor revenue, calendar 2025)", "display_value": "$444.1 billion", "display_label": "", "display_hook": null, "row_label": "IDC: server market revenue, 2025", "publisher_short": null, "geography": "Worldwide", "period": "2025", "population": "Worldwide server vendor revenue (IDC Worldwide Quarterly Server Tracker)", "sample_n": null, "publisher": "IDC", "source_title": "Worldwide Server Market finished 2025 with an all-time record of 444 billion dollars revenue, according to IDC", "source_url": "https://www.idc.com/resource-center/press-releases/4q25servertracker/", "source_type": "secondary", "source_access": "open", "published_at": "2026-03-12", "accessed_at": "2026-10-14", "quote": "For calendar year 2025 the market finished growing 80.4% compared to 2024, reaching a yearly record of $444.1 billion dollars revenue.", "locator": "Press release, bullet list", "derived": false, "formula": null, "headline": false, "series": "idc-server-market-revenue-annual", "history": [ { "period": "2024", "value": 235.7 } ], "notes": "Analyst figure 2 of 2 allowed on the page. Same release: 'traditional on-premise segment remain cautious on their spending path'; 4Q25 revenue $125.3 billion. Analyst figure (IDC). Revenue is now dominated by GPU-accelerated servers for hyperscalers and cloud providers; IDC says the traditional on-premise segment is spending cautiously. Saved copy: raw/on-premises-and-cloud-share/idc-2026-03-12-4q25-server-tracker.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2026-03-12-server-market-revenue-2025-444-1-billion-up-80-4pct", "citation_text": "$444.1 billion was worldwide server market revenue in 2025, up 80.4% from 2024 on AI infrastructure spending, according to IDC's Worldwide Quarterly Server Tracker (IDC, 2026). Source: IDC, \"Worldwide Server Market finished 2025 with an all-time record of 444 billion dollars revenue, according to IDC\" (https://www.idc.com/resource-center/press-releases/4q25servertracker/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2026-03-12-server-market-revenue-2025-444-1-billion-up-80-4pct." }, { "id": "idc-2025-03-18-server-market-revenue-2024-235-7-billion", "family": "on-premises-and-cloud-share", "statement": "$235.7 billion was worldwide server market revenue in 2024, more than double 2020, according to IDC's Worldwide Quarterly Server Tracker (IDC, 2025).", "short_statement": null, "short_refs": null, "value": 235.7, "unit": "billion US dollars (vendor revenue, calendar 2024)", "display_value": "$235.7 billion", "display_label": "", "display_hook": null, "row_label": "IDC: server market revenue, 2024", "publisher_short": null, "geography": "Worldwide", "period": "2024", "population": "Worldwide server vendor revenue (IDC Worldwide Quarterly Server Tracker)", "sample_n": null, "publisher": "IDC", "source_title": "Worldwide Server Market Revenue Increased 91% During the Fourth Quarter of 2024, according to IDC", "source_url": "https://www.idc.com/resource-center/press-releases/worldwide-server-market-revenue-increased-91-during-the-fourth-quarter-of-2024-according-to-idc-nvidia-continues-dominating-the-gpu-server-space/", "source_type": "secondary", "source_access": "open", "published_at": "2025-03-18", "accessed_at": "2026-10-14", "quote": "has more than doubled in size since 2020 with revenue of $235.7 billion dollars for the full year 2024.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "idc-server-market-revenue-annual", "history": [], "notes": "4Q24 revenue $77.3 billion (same release). Analyst figure (IDC). Revenue is now dominated by GPU-accelerated servers for hyperscalers and cloud providers; IDC says the traditional on-premise segment is spending cautiously. Saved copy: raw/on-premises-and-cloud-share/idc-2025-03-18-4q24-server-tracker.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2025-03-18-server-market-revenue-2024-235-7-billion", "citation_text": "$235.7 billion was worldwide server market revenue in 2024, more than double 2020, according to IDC's Worldwide Quarterly Server Tracker (IDC, 2025). Source: IDC, \"Worldwide Server Market Revenue Increased 91% During the Fourth Quarter of 2024, according to IDC\" (https://www.idc.com/resource-center/press-releases/worldwide-server-market-revenue-increased-91-during-the-fourth-quarter-of-2024-according-to-idc-nvidia-continues-dominating-the-gpu-server-space/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2025-03-18-server-market-revenue-2024-235-7-billion." }, { "id": "idc-2026-09-10-server-market-revenue-2q26-record-166-3-billion-units-up-15-4pct", "family": "on-premises-and-cloud-share", "statement": "$166.3 billion was worldwide server revenue in the second quarter of 2026, a record up 52.0% from $109.4 billion a year earlier, with unit shipments up 15.4%, according to IDC (IDC, 2026).", "short_statement": null, "short_refs": null, "value": 166.3, "unit": "billion US dollars (vendor revenue, 2Q26)", "display_value": "$166.3 billion", "display_label": "", "display_hook": null, "row_label": "IDC: server revenue, second quarter 2026", "publisher_short": null, "geography": "Worldwide", "period": "2026-Q2", "population": "Worldwide server vendor revenue (IDC Worldwide Quarterly Server Tracker)", "sample_n": null, "publisher": "IDC", "source_title": "Worldwide Server Market Revenue Hits Record $166.3 Billion in the Second Quarter of 2026 as AI Infrastructure Investment Continues to Broaden, according to IDC", "source_url": "https://www.idc.com/resource-center/press-releases/2q2026-wwserver-tracker/", "source_type": "secondary", "source_access": "open", "published_at": "2026-09-10", "accessed_at": "2026-10-14", "quote": "A record $166.3 billion in vendor revenue in 2Q26, the highest quarterly total in tracker history, reflecting 52.0% year-over-year growth from $109.4 billion in 2Q25.", "locator": "Highlights", "derived": false, "formula": null, "headline": false, "series": "idc-server-market-revenue-quarterly", "history": [], "notes": "Units: 'Worldwide server unit shipments grew 15.4% year-over-year, alongside revenue growth of 52.0%'. IDC publishes no unit totals or server OS shares in its open releases. Analyst figure (IDC). Revenue is now dominated by GPU-accelerated servers for hyperscalers and cloud providers; IDC says the traditional on-premise segment is spending cautiously. Saved copy: raw/on-premises-and-cloud-share/idc-pr-2q2026-wwserver-tracker.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2026-09-10-server-market-revenue-2q26-record-166-3-billion-units-up-15-4pct", "citation_text": "$166.3 billion was worldwide server revenue in the second quarter of 2026, a record up 52.0% from $109.4 billion a year earlier, with unit shipments up 15.4%, according to IDC (IDC, 2026). Source: IDC, \"Worldwide Server Market Revenue Hits Record $166.3 Billion in the Second Quarter of 2026 as AI Infrastructure Investment Continues to Broaden, according to IDC\" (https://www.idc.com/resource-center/press-releases/2q2026-wwserver-tracker/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2026-09-10-server-market-revenue-2q26-record-166-3-billion-units-up-15-4pct." }, { "id": "idc-2026-06-15-server-market-revenue-1q26-122-6-billion-1q25-revised-94-1-billion", "family": "on-premises-and-cloud-share", "statement": "$122.6 billion was worldwide server revenue in the first quarter of 2026, up 30.4% from $94.1 billion a year earlier, according to IDC (IDC, 2026).", "short_statement": null, "short_refs": null, "value": 122.6, "unit": "billion US dollars (vendor revenue, 1Q26)", "display_value": "$122.6 billion", "display_label": "", "display_hook": null, "row_label": "IDC: server revenue, first quarter 2026", "publisher_short": null, "geography": "Worldwide", "period": "2026-Q1", "population": "Worldwide server vendor revenue (IDC Worldwide Quarterly Server Tracker)", "sample_n": null, "publisher": "IDC", "source_title": "Worldwide Server Market Revenue Surpasses $122 Billion in the First Quarter of 2026, Driven by AI Infrastructure Demand, according to IDC", "source_url": "https://www.idc.com/resource-center/press-releases/1q26-server-tracker/", "source_type": "secondary", "source_access": "open", "published_at": "2026-06-15", "accessed_at": "2026-10-14", "quote": "30.4% year-over-year growth in vendor revenue in 1Q26, reaching $122.6 billion, compared to $94.1 billion in 1Q25.", "locator": "Highlights", "derived": false, "formula": null, "headline": false, "series": "idc-server-market-revenue-quarterly", "history": [], "notes": "IDC's June 2025 release gave 1Q25 as $95.2 billion (as CIO Dive reported); the 1Q26 release revises it to $94.1 billion. x86 server revenue fell 2.9% in 1Q26 on component supply constraints. Analyst figure (IDC). Revenue is now dominated by GPU-accelerated servers for hyperscalers and cloud providers; IDC says the traditional on-premise segment is spending cautiously. Saved copy: raw/on-premises-and-cloud-share/idc-pr-1q26-server-tracker.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2026-06-15-server-market-revenue-1q26-122-6-billion-1q25-revised-94-1-billion", "citation_text": "$122.6 billion was worldwide server revenue in the first quarter of 2026, up 30.4% from $94.1 billion a year earlier, according to IDC (IDC, 2026). Source: IDC, \"Worldwide Server Market Revenue Surpasses $122 Billion in the First Quarter of 2026, Driven by AI Infrastructure Demand, according to IDC\" (https://www.idc.com/resource-center/press-releases/1q26-server-tracker/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2026-06-15-server-market-revenue-1q26-122-6-billion-1q25-revised-94-1-billion." }, { "id": "idc-2025-12-11-server-market-revenue-3q25-112-4-billion", "family": "on-premises-and-cloud-share", "statement": "$112.4 billion was worldwide server revenue in the third quarter of 2025, up 61% year over year, according to IDC (IDC, 2025).", "short_statement": null, "short_refs": null, "value": 112.4, "unit": "billion US dollars (vendor revenue, 3Q25)", "display_value": "$112.4 billion", "display_label": "", "display_hook": null, "row_label": "IDC: server revenue, third quarter 2025", "publisher_short": null, "geography": "Worldwide", "period": "2025-Q3", "population": "Worldwide server vendor revenue (IDC Worldwide Quarterly Server Tracker)", "sample_n": null, "publisher": "IDC", "source_title": "Worldwide Server Market Revenue Increased 61% During the Third Quarter of 2025, according to IDC", "source_url": "https://www.idc.com/resource-center/press-releases/worldwide-server-market-revenue-increased-61-during-the-third-quarter-of-2025-according-to-idc/", "source_type": "secondary", "source_access": "open", "published_at": "2025-12-11", "accessed_at": "2026-10-14", "quote": "the server market reached a record $112.4 billion dollars in revenue during the third quarter of the year.", "locator": "First paragraph", "derived": false, "formula": null, "headline": false, "series": "idc-server-market-revenue-quarterly", "history": [], "notes": "Analyst figure (IDC). Revenue is now dominated by GPU-accelerated servers for hyperscalers and cloud providers; IDC says the traditional on-premise segment is spending cautiously. Saved copy: raw/on-premises-and-cloud-share/idc-pr-worldwide-server-market-revenue-increased-61-during-the-third-quarter-of-2025-according-to-idc.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2025-12-11-server-market-revenue-3q25-112-4-billion", "citation_text": "$112.4 billion was worldwide server revenue in the third quarter of 2025, up 61% year over year, according to IDC (IDC, 2025). Source: IDC, \"Worldwide Server Market Revenue Increased 61% During the Third Quarter of 2025, according to IDC\" (https://www.idc.com/resource-center/press-releases/worldwide-server-market-revenue-increased-61-during-the-third-quarter-of-2025-according-to-idc/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#idc-2025-12-11-server-market-revenue-3q25-112-4-billion." }, { "id": "ciodive-2025-09-04-restates-idc-1q25-server-revenue-95-2-billion-later-revised", "family": "on-premises-and-cloud-share", "statement": "$95.2 billion was first-quarter 2025 server revenue as CIO Dive reported IDC's June 2025 data, a figure IDC later revised to $94.1 billion (CIO Dive, 2025).", "short_statement": null, "short_refs": null, "value": 95.2, "unit": "billion US dollars (1Q25, as first published)", "display_value": "$95.2 billion (revised: $94.1 billion)", "display_label": "", "display_hook": null, "row_label": "CIO Dive: IDC's first-quarter 2025 figure as first reported", "publisher_short": null, "geography": "Worldwide", "period": "2025-Q1", "population": "Worldwide server vendor revenue (IDC Worldwide Quarterly Server Tracker)", "sample_n": null, "publisher": "CIO Dive (IDC data)", "source_title": "Dell, HPE reap revenue gains from AI server demand surge", "source_url": "https://www.ciodive.com/news/dell-hpe-ai-server-market-growth/759329/", "source_type": "secondary", "source_access": "open", "published_at": "2025-09-04", "accessed_at": "2026-10-14", "quote": "Server sales saw an unprecedented sales spike during the first three months of 2025, increasing 134% year over year to $95.2 billion, according to IDC data.", "locator": "Fourth paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Not an error by CIO Dive: IDC's own later release restates 1Q25 at $94.1 billion. Quote the latest IDC figure. Saved copy: raw/on-premises-and-cloud-share/ciodive-2025-gartner-server-market.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#ciodive-2025-09-04-restates-idc-1q25-server-revenue-95-2-billion-later-revised", "citation_text": "$95.2 billion was first-quarter 2025 server revenue as CIO Dive reported IDC's June 2025 data, a figure IDC later revised to $94.1 billion (CIO Dive, 2025). Source: CIO Dive (IDC data), \"Dell, HPE reap revenue gains from AI server demand surge\" (https://www.ciodive.com/news/dell-hpe-ai-server-market-growth/759329/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#ciodive-2025-09-04-restates-idc-1q25-server-revenue-95-2-billion-later-revised." }, { "id": "synergy-2025-06-24-on-premise-data-centers-34pct-of-worldwide-capacity", "family": "on-premises-and-cloud-share", "statement": "34% of worldwide data center capacity was in on-premise enterprise data centers in early 2025, down from almost 56% six years earlier, and Synergy expects 22% by 2030 (Synergy Research Group, 2025).", "short_statement": "On-premise enterprise data centres held **34%** of the world's data-centre capacity in early 2025, down from almost 56%.", "short_refs": null, "value": 34, "unit": "% of worldwide data center capacity", "display_value": "34%", "display_label": "Synergy Research Group, Q1 2025", "display_hook": null, "row_label": "Synergy: on-premise share of data-centre capacity, early 2025", "publisher_short": null, "geography": "Worldwide", "period": "2025-Q1", "population": "Worldwide data center capacity (Synergy Research Group: hyperscale, colocation and on-premise enterprise data centers)", "sample_n": null, "publisher": "Synergy Research Group", "source_title": "The World's Total Data Center Capacity is Shifting Rapidly to Hyperscale Operators", "source_url": "https://www.srgresearch.com/articles/the-worlds-total-data-center-capacity-is-shifting-rapidly-to-hyperscale-operators", "source_type": "secondary", "source_access": "open", "published_at": "2025-06-24", "accessed_at": "2026-10-14", "quote": "that leaves on-premise data centers with just 34% of the total. This is in stark contrast to six years ago, when almost 56% of data center capacity was in on-premise facilities.", "locator": "First paragraph", "derived": false, "formula": null, "headline": false, "series": "synergy-on-premise-share-of-data-center-capacity", "history": [ { "period": "2019", "value": 56 } ], "notes": "Forecast in the same paragraph: 'Looking ahead to 2030, hyperscale operators will account for 61% of all capacity, while on-premise will drop to just 22%.' Drift between editions: the August 2024 release put the share six years earlier (2018) at 'almost 60%'. Analyst estimate (Synergy, part of TechInsights) from its hyperscale, colocation and data center hardware trackers; capacity, not workloads or organisations. Saved copy: raw/on-premises-and-cloud-share/synergy-2025-06-24-capacity-shifting.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#synergy-2025-06-24-on-premise-data-centers-34pct-of-worldwide-capacity", "citation_text": "34% of worldwide data center capacity was in on-premise enterprise data centers in early 2025, down from almost 56% six years earlier, and Synergy expects 22% by 2030 (Synergy Research Group, 2025). Source: Synergy Research Group, \"The World's Total Data Center Capacity is Shifting Rapidly to Hyperscale Operators\" (https://www.srgresearch.com/articles/the-worlds-total-data-center-capacity-is-shifting-rapidly-to-hyperscale-operators). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#synergy-2025-06-24-on-premise-data-centers-34pct-of-worldwide-capacity." }, { "id": "synergy-2024-08-07-on-premise-data-centers-37pct-of-worldwide-capacity", "family": "on-premises-and-cloud-share", "statement": "37% of worldwide data center capacity was in on-premise enterprise data centers in 2024, down from almost 60% six years earlier, and Synergy expected 20% by 2029 (Synergy Research Group, 2024).", "short_statement": null, "short_refs": null, "value": 37, "unit": "% of worldwide data center capacity", "display_value": "37%", "display_label": "", "display_hook": null, "row_label": "Synergy: on-premise share of data-centre capacity, 2024", "publisher_short": null, "geography": "Worldwide", "period": "2024-Q2", "population": "Worldwide data center capacity (Synergy Research Group: hyperscale, colocation and on-premise enterprise data centers)", "sample_n": null, "publisher": "Synergy Research Group", "source_title": "Hyperscale Operators and Colocation Continue to Drive Huge Changes in Data Center Capacity Trends", "source_url": "https://www.srgresearch.com/articles/hyperscale-operators-and-colocation-continue-to-drive-huge-changes-in-data-center-capacity-trends", "source_type": "secondary", "source_access": "open", "published_at": "2024-08-07", "accessed_at": "2026-10-14", "quote": "that leaves on-premise data centers with just 37% of the total. This is in stark contrast to six years ago, when almost 60% of data center capacity was in on-premise facilities.", "locator": "First paragraph", "derived": false, "formula": null, "headline": false, "series": "synergy-on-premise-share-of-data-center-capacity", "history": [ { "period": "2018", "value": 60 } ], "notes": "Same release: 'Looking ahead to 2029, hyperscale operators will account for over 60% of all capacity, while on-premise will drop to just 20%.' and 'today they spend three times more on cloud services then they do on their own data center infrastructure' (enterprises; in 2012 it was the reverse, twelve to one). Analyst estimate (Synergy, part of TechInsights) from its hyperscale, colocation and data center hardware trackers; capacity, not workloads or organisations. Saved copy: raw/on-premises-and-cloud-share/synergy-2024-08-07-capacity-trends.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#synergy-2024-08-07-on-premise-data-centers-37pct-of-worldwide-capacity", "citation_text": "37% of worldwide data center capacity was in on-premise enterprise data centers in 2024, down from almost 60% six years earlier, and Synergy expected 20% by 2029 (Synergy Research Group, 2024). Source: Synergy Research Group, \"Hyperscale Operators and Colocation Continue to Drive Huge Changes in Data Center Capacity Trends\" (https://www.srgresearch.com/articles/hyperscale-operators-and-colocation-continue-to-drive-huge-changes-in-data-center-capacity-trends). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#synergy-2024-08-07-on-premise-data-centers-37pct-of-worldwide-capacity." }, { "id": "synergy-2021-03-18-60pct-of-servers-sold-go-into-cloud-provider-data-centers", "family": "on-premises-and-cloud-share", "statement": "60% of the servers being sold in 2020 went into cloud providers' data centers rather than enterprises' own, while enterprise data center hardware and software spending fell 6% to $89 billion, according to Synergy Research Group (Synergy Research Group, 2021).", "short_statement": null, "short_refs": null, "value": 60, "unit": "% of servers sold (by Synergy's estimate)", "display_value": "60%", "display_label": "", "display_hook": null, "row_label": "Synergy: servers sold into cloud providers' data centres, 2020", "publisher_short": null, "geography": "Worldwide", "period": "2020", "population": "Worldwide server sales and enterprise data center spending (Synergy Research Group)", "sample_n": null, "publisher": "Synergy Research Group", "source_title": "2020 - The Year that Cloud Service Revenues Finally Dwarfed Enterprise Spending on Data Centers", "source_url": "https://www.srgresearch.com/articles/2020-the-year-that-cloud-service-revenues-finally-dwarfed-enterprise-spending-on-data-centers", "source_type": "secondary", "source_access": "open", "published_at": "2021-03-18", "accessed_at": "2026-10-14", "quote": "However, 60% of the servers now being sold are going into cloud providers' data centers and not those of enterprises", "locator": "Quote from John Dinsdale, third paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Same release: 'In 2020 worldwide spending on enterprise data center hardware and software (comprising servers, storage, networking, security and associated software) was $89 billion', against almost $130 billion on cloud infrastructure services. InfoWorld (23 March 2021) restated both. Analyst estimate (Synergy, part of TechInsights) from its hyperscale, colocation and data center hardware trackers; capacity, not workloads or organisations. Saved copy: raw/on-premises-and-cloud-share/synergy-2021-03-cloud-dwarfed-data-center-spend.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#synergy-2021-03-18-60pct-of-servers-sold-go-into-cloud-provider-data-centers", "citation_text": "60% of the servers being sold in 2020 went into cloud providers' data centers rather than enterprises' own, while enterprise data center hardware and software spending fell 6% to $89 billion, according to Synergy Research Group (Synergy Research Group, 2021). Source: Synergy Research Group, \"2020 - The Year that Cloud Service Revenues Finally Dwarfed Enterprise Spending on Data Centers\" (https://www.srgresearch.com/articles/2020-the-year-that-cloud-service-revenues-finally-dwarfed-enterprise-spending-on-data-centers). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#synergy-2021-03-18-60pct-of-servers-sold-go-into-cloud-provider-data-centers." }, { "id": "nutanix-2026-eci-52pct-run-containerized-apps-on-premises-or-private-cloud-53pct-public-cloud", "family": "on-premises-and-cloud-share", "statement": "52% of large organisations ran containerized applications on-premises or in a private cloud, almost the same as the 53% running them in public cloud, in Nutanix's 2026 Enterprise Cloud Index survey of 1,600 IT and engineering executives (Nutanix, 2026).", "short_statement": null, "short_refs": null, "value": 52, "unit": "% of organisations (500+ employees) surveyed for Nutanix", "display_value": "52% (public cloud 53%)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "14 countries (Australia, Brazil, France, Germany, India, Italy, Japan, Mexico, Netherlands, Saudi Arabia, Singapore, Spain, UK, US)", "period": "2025-11", "population": "IT and engineering executives (manager and above) at companies with 500+ employees, Wakefield Research for Nutanix, 13-23 November 2025", "sample_n": 1600, "publisher": "Nutanix", "source_title": "2026 Enterprise Cloud Index: AI Drives Modernization", "source_url": "https://www.nutanix.com/enterprise-cloud-index", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-03-03", "accessed_at": "2026-10-14", "quote": "Nearly the same percentage of enterprises are running their containerized apps on-premises or on a private cloud (52%) as they are on the public cloud (53%).", "locator": "Section on data sovereignty", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Vendor-sponsored survey (Nutanix sells hybrid-cloud infrastructure). Same page: 54% expect containerized apps on-premises or private cloud within three years; 82% say current infrastructure is not fully ready for on-premises AI workloads. published_at from the 3 March 2026 press release date (the IR copy is blocked). Saved copy: raw/on-premises-and-cloud-share/nutanix-eci-page.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#nutanix-2026-eci-52pct-run-containerized-apps-on-premises-or-private-cloud-53pct-public-cloud", "citation_text": "52% of large organisations ran containerized applications on-premises or in a private cloud, almost the same as the 53% running them in public cloud, in Nutanix's 2026 Enterprise Cloud Index survey of 1,600 IT and engineering executives (Nutanix, 2026). Source: Nutanix, \"2026 Enterprise Cloud Index: AI Drives Modernization\" (https://www.nutanix.com/enterprise-cloud-index). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#nutanix-2026-eci-52pct-run-containerized-apps-on-premises-or-private-cloud-53pct-public-cloud." }, { "id": "microsoft-fy23-q2-earnings-2023-01-24-azure-arc-customers-12000", "family": "on-premises-and-cloud-share", "statement": "12,000+ customers used Azure Arc, Microsoft's service for managing servers outside Azure, by December 2022, double a year earlier, as Microsoft reported on its fiscal 2023 second-quarter call (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 12000, "unit": "Azure Arc customers (lower bound)", "display_value": "12,000+", "display_label": "", "display_hook": null, "row_label": "December 2022", "publisher_short": null, "geography": "Worldwide", "period": "2022-12", "population": "Organisations using Azure Arc (Microsoft's hybrid management service for non-Azure servers)", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY23 Second Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY23Q2", "source_type": "primary", "source_access": "open", "published_at": "2023-01-24", "accessed_at": "2026-10-14", "quote": "We now have more than 12,000 Arc customers, double the number a year ago, including companies like Citrix, Northern Trust, and PayPal.", "locator": "Satya Nadella's prepared remarks", "derived": false, "formula": null, "headline": false, "series": "microsoft-azure-arc-customers", "history": [], "notes": "Official transcript (.docx) from Microsoft's investor site CDN, saved as raw/on-premises-and-cloud-share/ms-transcript-fy23q2.docx and .txt. Extends the next-versions-adoption family's series (which starts at FY24 Q4 for revenue and lists 8,500 / 33,000 / 36,000 / 39,000 Arc customers) backwards; same series keys so the merge can join them. Saved copy: raw/on-premises-and-cloud-share/ms-transcript-fy23q2.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy23-q2-earnings-2023-01-24-azure-arc-customers-12000", "citation_text": "12,000+ customers used Azure Arc, Microsoft's service for managing servers outside Azure, by December 2022, double a year earlier, as Microsoft reported on its fiscal 2023 second-quarter call (Microsoft, 2023). Source: Microsoft, \"Microsoft FY23 Second Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY23Q2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy23-q2-earnings-2023-01-24-azure-arc-customers-12000." }, { "id": "microsoft-fy23-q3-earnings-2023-04-25-azure-arc-customers-15000", "family": "on-premises-and-cloud-share", "statement": "15,000+ customers used Azure Arc by March 2023, up more than 150% year over year, as Microsoft reported on its fiscal 2023 third-quarter call (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 15000, "unit": "Azure Arc customers (lower bound)", "display_value": "15,000+", "display_label": "", "display_hook": null, "row_label": "March 2023", "publisher_short": null, "geography": "Worldwide", "period": "2023-03", "population": "Organisations using Azure Arc", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY23 Third Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY23Q3", "source_type": "primary", "source_access": "open", "published_at": "2023-04-25", "accessed_at": "2026-10-14", "quote": "We now have more than 15,000 Azure Arc customers, up over 150% year-over-year.", "locator": "Satya Nadella's prepared remarks", "derived": false, "formula": null, "headline": false, "series": "microsoft-azure-arc-customers", "history": [], "notes": "Official transcript (.docx) from Microsoft's investor site CDN, saved as raw/on-premises-and-cloud-share/ms-transcript-fy23q3.docx and .txt. Extends the next-versions-adoption family's series (which starts at FY24 Q4 for revenue and lists 8,500 / 33,000 / 36,000 / 39,000 Arc customers) backwards; same series keys so the merge can join them. Saved copy: raw/on-premises-and-cloud-share/ms-transcript-fy23q3.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy23-q3-earnings-2023-04-25-azure-arc-customers-15000", "citation_text": "15,000+ customers used Azure Arc by March 2023, up more than 150% year over year, as Microsoft reported on its fiscal 2023 third-quarter call (Microsoft, 2023). Source: Microsoft, \"Microsoft FY23 Third Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY23Q3). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy23-q3-earnings-2023-04-25-azure-arc-customers-15000." }, { "id": "microsoft-fy23-q4-earnings-2023-07-25-azure-arc-customers-18000-up-150pct", "family": "on-premises-and-cloud-share", "statement": "18,000 customers used Azure Arc by June 2023, up 150% year over year, as Microsoft reported on its fiscal 2023 fourth-quarter call (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 18000, "unit": "Azure Arc customers", "display_value": "18,000", "display_label": "", "display_hook": null, "row_label": "June 2023", "publisher_short": null, "geography": "Worldwide", "period": "2023-06", "population": "Organisations using Azure Arc", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY23 Fourth Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY23Q4", "source_type": "primary", "source_access": "open", "published_at": "2023-07-25", "accessed_at": "2026-10-14", "quote": "We are also seeing increasing momentum with Azure Arc, which now has 18,000 customers, up 150% year-over-year, including Carnival Corp., Domino's, Thermo Fisher.", "locator": "Satya Nadella's prepared remarks", "derived": false, "formula": null, "headline": false, "series": "microsoft-azure-arc-customers", "history": [], "notes": "Official transcript (.docx) from Microsoft's investor site CDN, saved as raw/on-premises-and-cloud-share/ms-transcript-fy23q4.docx and .txt. Extends the next-versions-adoption family's series (which starts at FY24 Q4 for revenue and lists 8,500 / 33,000 / 36,000 / 39,000 Arc customers) backwards; same series keys so the merge can join them. Saved copy: raw/on-premises-and-cloud-share/ms-transcript-fy23q4.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy23-q4-earnings-2023-07-25-azure-arc-customers-18000-up-150pct", "citation_text": "18,000 customers used Azure Arc by June 2023, up 150% year over year, as Microsoft reported on its fiscal 2023 fourth-quarter call (Microsoft, 2023). Source: Microsoft, \"Microsoft FY23 Fourth Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY23Q4). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy23-q4-earnings-2023-07-25-azure-arc-customers-18000-up-150pct." }, { "id": "microsoft-fy24-q1-earnings-2023-10-24-azure-arc-customers-21000-up-140pct", "family": "on-premises-and-cloud-share", "statement": "21,000 customers used Azure Arc by September 2023, up 140% year over year, as Microsoft reported on its fiscal 2024 first-quarter call (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 21000, "unit": "Azure Arc customers", "display_value": "21,000", "display_label": "", "display_hook": null, "row_label": "September 2023", "publisher_short": null, "geography": "Worldwide", "period": "2023-09", "population": "Organisations using Azure Arc", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY24 First Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY24Q1", "source_type": "primary", "source_access": "open", "published_at": "2023-10-24", "accessed_at": "2026-10-14", "quote": "We now have 21,000 Arc customers, up 140% year-over-year.", "locator": "Satya Nadella's prepared remarks", "derived": false, "formula": null, "headline": false, "series": "microsoft-azure-arc-customers", "history": [], "notes": "Microsoft gives Arc customer counts, never Arc-enabled server counts; no server count was found in the FY23-FY26 transcripts. Official transcript (.docx) from Microsoft's investor site CDN, saved as raw/on-premises-and-cloud-share/ms-transcript-fy24q1.docx and .txt. Extends the next-versions-adoption family's series (which starts at FY24 Q4 for revenue and lists 8,500 / 33,000 / 36,000 / 39,000 Arc customers) backwards; same series keys so the merge can join them. Saved copy: raw/on-premises-and-cloud-share/ms-transcript-fy24q1.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy24-q1-earnings-2023-10-24-azure-arc-customers-21000-up-140pct", "citation_text": "21,000 customers used Azure Arc by September 2023, up 140% year over year, as Microsoft reported on its fiscal 2024 first-quarter call (Microsoft, 2023). Source: Microsoft, \"Microsoft FY24 First Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY24Q1). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy24-q1-earnings-2023-10-24-azure-arc-customers-21000-up-140pct." }, { "id": "microsoft-fy23-q4-earnings-2023-07-25-on-premises-server-revenue-down-1pct", "family": "on-premises-and-cloud-share", "statement": "1% was the year-over-year fall in Microsoft's on-premises server revenue (Windows Server, SQL Server and related licences) in April to June 2023, relatively unchanged in constant currency (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": -1, "unit": "% change year over year (as reported)", "display_value": "-1%", "display_label": "", "display_hook": null, "row_label": "April to June 2023 (FY23 Q4)", "publisher_short": null, "geography": "Worldwide", "period": "2023-Q2 (April to June 2023, Microsoft FY23 Q4)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY23 Fourth Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY23Q4", "source_type": "primary", "source_access": "open", "published_at": "2023-07-25", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue decreased 1% and was relatively unchanged in constant currency, driven by a slight decrease in new annuity contracts", "locator": "Amy Hood's Intelligent Cloud remarks", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Earlier FY23 quarters from the same transcripts (saved): FY23 Q1 'revenue was flat and increased 4 percent in constant currency'; FY23 Q2 'decreased 2 percent'; FY23 Q3 'decreased 2%'. Official transcript (.docx) from Microsoft's investor site CDN, saved as raw/on-premises-and-cloud-share/ms-transcript-fy23q4.docx and .txt. Extends the next-versions-adoption family's series (which starts at FY24 Q4 for revenue and lists 8,500 / 33,000 / 36,000 / 39,000 Arc customers) backwards; same series keys so the merge can join them. Saved copy: raw/on-premises-and-cloud-share/ms-transcript-fy23q4.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy23-q4-earnings-2023-07-25-on-premises-server-revenue-down-1pct", "citation_text": "1% was the year-over-year fall in Microsoft's on-premises server revenue (Windows Server, SQL Server and related licences) in April to June 2023, relatively unchanged in constant currency (Microsoft, 2023). Source: Microsoft, \"Microsoft FY23 Fourth Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY23Q4). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy23-q4-earnings-2023-07-25-on-premises-server-revenue-down-1pct." }, { "id": "microsoft-fy24-q1-earnings-2023-10-24-on-premises-server-revenue-up-2pct-ahead-of-windows-server-2012-end-of-support", "family": "on-premises-and-cloud-share", "statement": "2% was the year-over-year rise in Microsoft's on-premises server revenue in July to September 2023, which Microsoft attributed primarily to demand ahead of Windows Server 2012's end of support on 10 October 2023 (Microsoft, 2023).", "short_statement": null, "short_refs": null, "value": 2, "unit": "% change year over year (as reported)", "display_value": "+2%", "display_label": "Microsoft FY24 Q1 earnings call, 24 October 2023", "display_hook": null, "row_label": "July to September 2023 (FY24 Q1)", "publisher_short": null, "geography": "Worldwide", "period": "2023-Q3 (July to September 2023, Microsoft FY24 Q1)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY24 First Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY24Q1", "source_type": "primary", "source_access": "open", "published_at": "2023-10-24", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue increased 2%, ahead of expectations driven primarily by demand in advance of Windows Server 2012 end of support.", "locator": "Amy Hood's Intelligent Cloud remarks", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Official transcript (.docx) from Microsoft's investor site CDN, saved as raw/on-premises-and-cloud-share/ms-transcript-fy24q1.docx and .txt. Extends the next-versions-adoption family's series (which starts at FY24 Q4 for revenue and lists 8,500 / 33,000 / 36,000 / 39,000 Arc customers) backwards; same series keys so the merge can join them. Saved copy: raw/on-premises-and-cloud-share/ms-transcript-fy24q1.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy24-q1-earnings-2023-10-24-on-premises-server-revenue-up-2pct-ahead-of-windows-server-2012-end-of-support", "citation_text": "2% was the year-over-year rise in Microsoft's on-premises server revenue in July to September 2023, which Microsoft attributed primarily to demand ahead of Windows Server 2012's end of support on 10 October 2023 (Microsoft, 2023). Source: Microsoft, \"Microsoft FY24 First Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY24Q1). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy24-q1-earnings-2023-10-24-on-premises-server-revenue-up-2pct-ahead-of-windows-server-2012-end-of-support." }, { "id": "microsoft-fy24-q2-earnings-2024-01-30-on-premises-server-revenue-up-3pct-windows-server-2012-end-of-support-demand", "family": "on-premises-and-cloud-share", "statement": "3% was the year-over-year rise in Microsoft's on-premises server revenue in October to December 2023, driven primarily by better-than-expected demand related to Windows Server 2012's end of support (Microsoft, 2024).", "short_statement": "Microsoft's on-premises server revenue rose **3%** at the end of 2023, driven mainly by Windows Server 2012's end of support.", "short_refs": null, "value": 3, "unit": "% change year over year (as reported)", "display_value": "+3%", "display_label": "", "display_hook": null, "row_label": "October to December 2023 (FY24 Q2)", "publisher_short": null, "geography": "Worldwide", "period": "2023-Q4 (October to December 2023, Microsoft FY24 Q2)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY24 Second Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY24Q2", "source_type": "primary", "source_access": "open", "published_at": "2024-01-30", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue increased 3% and 2% in constant currency, ahead of expectations driven primarily by better-than-expected demand related to Windows Server 2012 end of support.", "locator": "Amy Hood's Intelligent Cloud remarks", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Official transcript (.docx) from Microsoft's investor site CDN, saved as raw/on-premises-and-cloud-share/ms-transcript-fy24q2.docx and .txt. Extends the next-versions-adoption family's series (which starts at FY24 Q4 for revenue and lists 8,500 / 33,000 / 36,000 / 39,000 Arc customers) backwards; same series keys so the merge can join them. Saved copy: raw/on-premises-and-cloud-share/ms-transcript-fy24q2.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy24-q2-earnings-2024-01-30-on-premises-server-revenue-up-3pct-windows-server-2012-end-of-support-demand", "citation_text": "3% was the year-over-year rise in Microsoft's on-premises server revenue in October to December 2023, driven primarily by better-than-expected demand related to Windows Server 2012's end of support (Microsoft, 2024). Source: Microsoft, \"Microsoft FY24 Second Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY24Q2). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy24-q2-earnings-2024-01-30-on-premises-server-revenue-up-3pct-windows-server-2012-end-of-support-demand." }, { "id": "microsoft-fy24-q3-earnings-2024-04-25-on-premises-server-revenue-up-6pct", "family": "on-premises-and-cloud-share", "statement": "6% was the year-over-year rise in Microsoft's on-premises server revenue in January to March 2024, driven by better-than-expected renewals (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": 6, "unit": "% change year over year (as reported)", "display_value": "+6%", "display_label": "", "display_hook": null, "row_label": "January to March 2024 (FY24 Q3)", "publisher_short": null, "geography": "Worldwide", "period": "2024-Q1 (January to March 2024, Microsoft FY24 Q3)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY24 Third Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY24Q3", "source_type": "primary", "source_access": "open", "published_at": "2024-04-25", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue increased 6%, ahead of expectations driven by better-than-expected renewal strength, particularly for contracts with higher in-period revenue recognition.", "locator": "Amy Hood's Intelligent Cloud remarks", "derived": false, "formula": null, "headline": false, "series": "microsoft-on-premises-server-revenue-growth", "history": [], "notes": "Official transcript (.docx) from Microsoft's investor site CDN, saved as raw/on-premises-and-cloud-share/ms-transcript-fy24q3.docx and .txt. Extends the next-versions-adoption family's series (which starts at FY24 Q4 for revenue and lists 8,500 / 33,000 / 36,000 / 39,000 Arc customers) backwards; same series keys so the merge can join them. Saved copy: raw/on-premises-and-cloud-share/ms-transcript-fy24q3.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy24-q3-earnings-2024-04-25-on-premises-server-revenue-up-6pct", "citation_text": "6% was the year-over-year rise in Microsoft's on-premises server revenue in January to March 2024, driven by better-than-expected renewals (Microsoft, 2024). Source: Microsoft, \"Microsoft FY24 Third Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY24Q3). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy24-q3-earnings-2024-04-25-on-premises-server-revenue-up-6pct." }, { "id": "microsoft-fy25-q1-earnings-2024-10-30-guidance-prior-year-benefited-from-windows-server-2012-end-of-support-purchasing", "family": "on-premises-and-cloud-share", "statement": "Microsoft guided its October to December 2024 on-premises server revenue to fall in the low to mid single digits because the prior-year quarter had benefited from purchasing ahead of Windows Server 2012's end of support (Microsoft, 2024).", "short_statement": null, "short_refs": null, "value": null, "unit": "guidance (qualitative: 'low to mid-single digits' decline)", "display_value": "low to mid single-digit decline (guidance)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2024-Q4 (guidance given 2024-10-30)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "Microsoft FY25 First Quarter Earnings Conference Call (transcript)", "source_url": "https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY25Q1", "source_type": "primary", "source_access": "open", "published_at": "2024-10-30", "accessed_at": "2026-10-14", "quote": "in our on-premises server business, we expect revenue to decline in the low to mid-single digits on a prior year comparable that benefited from purchasing ahead of Windows Server 2012 end of support.", "locator": "Amy Hood's outlook for the December quarter", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "The outcome (FY25 Q2: down 3%, 'slower Windows Server 2025 purchasing') is in the next-versions-adoption family. Official transcript (.docx) from Microsoft's investor site CDN, saved as raw/on-premises-and-cloud-share/ms-transcript-fy25q1.docx and .txt. Extends the next-versions-adoption family's series (which starts at FY24 Q4 for revenue and lists 8,500 / 33,000 / 36,000 / 39,000 Arc customers) backwards; same series keys so the merge can join them. Saved copy: raw/on-premises-and-cloud-share/ms-transcript-fy25q1.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q1-earnings-2024-10-30-guidance-prior-year-benefited-from-windows-server-2012-end-of-support-purchasing", "citation_text": "Microsoft guided its October to December 2024 on-premises server revenue to fall in the low to mid single digits because the prior-year quarter had benefited from purchasing ahead of Windows Server 2012's end of support (Microsoft, 2024). Source: Microsoft, \"Microsoft FY25 First Quarter Earnings Conference Call (transcript)\" (https://cdn-dynmedia-1.microsoft.com/is/content/microsoftcorp/TranscriptFY25Q1). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-q1-earnings-2024-10-30-guidance-prior-year-benefited-from-windows-server-2012-end-of-support-purchasing." }, { "id": "microsoft-fy25-annual-intelligent-cloud-server-products-revenue-down-3pct", "family": "on-premises-and-cloud-share", "statement": "3% was the decline in Microsoft's server products revenue (on-premises Windows Server, SQL Server and related licences) for the fiscal year to June 2025, as customers continued to shift to cloud offerings, while Azure grew 34% (Microsoft, 2025).", "short_statement": null, "short_refs": null, "value": -3, "unit": "% change year over year, fiscal year July 2024 to June 2025", "display_value": "-3% (FY25)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "FY2025 (July 2024 to June 2025)", "population": "Microsoft corporate reporting", "sample_n": null, "publisher": "Microsoft", "source_title": "FY25 Q4 - Intelligent Cloud Performance - Investor Relations - Microsoft", "source_url": "https://www.microsoft.com/en-us/investor/earnings/fy-2025-q4/intelligent-cloud-performance", "source_type": "primary", "source_access": "open", "published_at": "2025-07-30", "accessed_at": "2026-10-14", "quote": "Server products revenue decreased 3% driven by a decrease in transactional purchasing with continued customer shift to cloud offerings.", "locator": "Segment revenue commentary (full-year view: 'Revenue increased $18.8 billion or 21%')", "derived": false, "formula": null, "headline": false, "series": "microsoft-server-products-revenue-growth-annual", "history": [], "notes": "The page's figures are full-year FY25 against FY24 (Intelligent Cloud revenue up $18.8 billion or 21%), not the fourth quarter alone. The FY26 equivalent page returns 404. Saved copy: raw/on-premises-and-cloud-share/microsoft-fy25-q4-intelligent-cloud-performance.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-annual-intelligent-cloud-server-products-revenue-down-3pct", "citation_text": "3% was the decline in Microsoft's server products revenue (on-premises Windows Server, SQL Server and related licences) for the fiscal year to June 2025, as customers continued to shift to cloud offerings, while Azure grew 34% (Microsoft, 2025). Source: Microsoft, \"FY25 Q4 - Intelligent Cloud Performance - Investor Relations - Microsoft\" (https://www.microsoft.com/en-us/investor/earnings/fy-2025-q4/intelligent-cloud-performance). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#microsoft-fy25-annual-intelligent-cloud-server-products-revenue-down-3pct." }, { "id": "geekwire-2026-07-30-microsoft-10k-server-products-and-cloud-services-129-4-billion-fy26", "family": "on-premises-and-cloud-share", "statement": "$129.4 billion was Microsoft's server products and cloud services revenue (Azure, SQL Server, Windows Server, Visual Studio, GitHub and Nuance) in the fiscal year to June 2026, nearly 40% of company revenue, as GeekWire read the 10-K (GeekWire, 2026).", "short_statement": null, "short_refs": null, "value": 129.4, "unit": "billion US dollars (fiscal year July 2025 to June 2026)", "display_value": "$129.4 billion (FY26)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "FY2026 (July 2025 to June 2026)", "population": "Microsoft corporate reporting (10-K revenue by product and service offering)", "sample_n": null, "publisher": "GeekWire (Microsoft 10-K)", "source_title": "Which Microsoft businesses are growing and shrinking, according to obscure table in regulatory filing", "source_url": "https://www.geekwire.com/2026/which-microsoft-businesses-are-growing-and-shrinking-according-to-obscure-table-in-regulatory-filing/", "source_type": "secondary", "source_access": "open", "published_at": "2026-07-30", "accessed_at": "2026-10-14", "quote": "At total revenue of $129.4 billion, this is by far Microsoft's biggest business, accounting for nearly 40% of its annual revenue.", "locator": "Section on Server products and cloud services (10-K page 85 table)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Same article: the category added $31 billion of Microsoft's $50.1 billion revenue growth. Microsoft does not split on-premises server licences from Azure in this line; the 10-K itself (SEC) was not fetched. Saved copy: raw/on-premises-and-cloud-share/geekwire-2026-microsoft-10k-table.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#geekwire-2026-07-30-microsoft-10k-server-products-and-cloud-services-129-4-billion-fy26", "citation_text": "$129.4 billion was Microsoft's server products and cloud services revenue (Azure, SQL Server, Windows Server, Visual Studio, GitHub and Nuance) in the fiscal year to June 2026, nearly 40% of company revenue, as GeekWire read the 10-K (GeekWire, 2026). Source: GeekWire (Microsoft 10-K), \"Which Microsoft businesses are growing and shrinking, according to obscure table in regulatory filing\" (https://www.geekwire.com/2026/which-microsoft-businesses-are-growing-and-shrinking-according-to-obscure-table-in-regulatory-filing/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#geekwire-2026-07-30-microsoft-10k-server-products-and-cloud-services-129-4-billion-fy26." }, { "id": "fool-2026-01-28-transcript-misstates-microsoft-fy26-q2-on-premises-server-revenue-as-up-21pct", "family": "on-premises-and-cloud-share", "statement": "21% in constant currency is how the Motley Fool's transcript rendered Microsoft's October to December 2025 on-premises server revenue growth, which Microsoft's official transcript gives as up 2% and 1% in constant currency (Motley Fool, 2026).", "short_statement": null, "short_refs": null, "value": 21, "unit": "restated % change (official: +2%, +1% in constant currency)", "display_value": "21% (official: 2%)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2025-Q4 (Microsoft FY26 Q2)", "population": "Microsoft corporate reporting (as transcribed by a third party)", "sample_n": null, "publisher": "The Motley Fool", "source_title": "Microsoft (MSFT) Q2 2026 Earnings Call Transcript", "source_url": "https://www.fool.com/earnings/call-transcripts/2026/01/28/microsoft-msft-q2-2026-earnings-call-transcript/", "source_type": "secondary", "source_access": "open", "published_at": "2026-01-28", "accessed_at": "2026-10-14", "quote": "In our on-premises server business, revenue increased 21% in constant currency ahead of expectations driven by demand for our hybrid solutions including a benefit from the launch of SQL Server 2025.", "locator": "Amy Hood's Intelligent Cloud remarks; also the summary bullet 'On-premises server revenue -- Increased 21% in constant currency'", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Transcription error ('2% and 1%' heard as '21%'). Microsoft's official FY26 Q2 transcript and Intelligent Cloud page say 'increased 2%' (next-versions-adoption record microsoft-fy26-q2-earnings-2026-01-28-on-premises-server-revenue-up-2pct-sql-server-2025-launch). Cite Microsoft's own transcript, never third-party transcripts. Saved copy: raw/on-premises-and-cloud-share/fool-microsoft-fy26-q2-transcript.txt.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#fool-2026-01-28-transcript-misstates-microsoft-fy26-q2-on-premises-server-revenue-as-up-21pct", "citation_text": "21% in constant currency is how the Motley Fool's transcript rendered Microsoft's October to December 2025 on-premises server revenue growth, which Microsoft's official transcript gives as up 2% and 1% in constant currency (Motley Fool, 2026). Source: The Motley Fool, \"Microsoft (MSFT) Q2 2026 Earnings Call Transcript\" (https://www.fool.com/earnings/call-transcripts/2026/01/28/microsoft-msft-q2-2026-earnings-call-transcript/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#fool-2026-01-28-transcript-misstates-microsoft-fy26-q2-on-premises-server-revenue-as-up-21pct." }, { "id": "innov8-restates-windows-server-2016-extended-end-as-2027-01-11", "family": "restatements-and-aggregators", "statement": "Innov8's end-of-life page gives 11 January 2027 as the end of extended support for Windows Server 2016 Standard, Datacenter and Essentials, one day before the 12 January 2027 on Microsoft's lifecycle page (Innov8, 2026).", "short_statement": null, "short_refs": null, "value": -1, "unit": "days off Microsoft's lifecycle date (aggregator minus Microsoft)", "display_value": "11 January 2027 (Microsoft: 12 January 2027)", "display_label": "", "display_hook": null, "row_label": "Innov8: Windows Server 2016, end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2027-01-11", "population": "Windows Server lifecycle dates as listed by a UK Sage reseller's end-of-life page", "sample_n": null, "publisher": "Innov8 Technology", "source_title": "End of Life Information + Sage 200 Version Numbers, Sage 200 Support Status", "source_url": "https://innov8.co.uk/end-of-life-information/", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "Windows Server 2016 Standard| October 15, 2016| January 11, 2022| January 11, 2027", "locator": "Section 'Microsoft Windows Server', table row 'Windows Server 2016 Standard' (same date on the Datacenter and Essentials rows), column 'Extended Support'", "derived": true, "formula": "innov8 'Extended Support' 2027-01-11 minus Microsoft lifecycle (PT) extended end date 2027-01-12 = -1 day", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "This is the aggregator the page brief describes ('one gives 11 January 2027'). The error is old: the Wayback capture of 5 March 2023 (https://web.archive.org/web/20230305221142/https://www.innov8.co.uk/End-of-Life, raw innov8-end-of-life-wb-2023-03-05.html) already shows 'January 11, 2027' for all three 2016 editions. Probable cause: copying the mainstream day (11 January 2022) forward. Page first published 23 February 2023, last modified 13 October 2026 (schema.org metadata). Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#innov8-restates-windows-server-2016-extended-end-as-2027-01-11", "citation_text": "Innov8's end-of-life page gives 11 January 2027 as the end of extended support for Windows Server 2016 Standard, Datacenter and Essentials, one day before the 12 January 2027 on Microsoft's lifecycle page (Innov8, 2026). Source: Innov8 Technology, \"End of Life Information + Sage 200 Version Numbers, Sage 200 Support Status\" (https://innov8.co.uk/end-of-life-information/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#innov8-restates-windows-server-2016-extended-end-as-2027-01-11." }, { "id": "innov8-restates-windows-server-2025-mainstream-end-as-2029-10-09", "family": "restatements-and-aggregators", "statement": "Innov8's end-of-life page gives 9 October 2029 as the end of mainstream support for Windows Server 2025, 35 days earlier than the 13 November 2029 on Microsoft's lifecycle page (Innov8, 2026).", "short_statement": null, "short_refs": null, "value": -35, "unit": "days off Microsoft's lifecycle date (aggregator minus Microsoft)", "display_value": "9 October 2029 (Microsoft: 13 November 2029)", "display_label": "", "display_hook": null, "row_label": "Innov8: Windows Server 2025, end of mainstream support", "publisher_short": null, "geography": "Worldwide", "period": "2029-10-09", "population": "Windows Server lifecycle dates as listed by a UK Sage reseller's end-of-life page", "sample_n": null, "publisher": "Innov8 Technology", "source_title": "End of Life Information + Sage 200 Version Numbers, Sage 200 Support Status", "source_url": "https://innov8.co.uk/end-of-life-information/", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "Windows Server 2025| November 1, 2024| October 9, 2029| October 9, 2034", "locator": "Section 'Microsoft Windows Server', table row 'Windows Server 2025', column 'End of Life' (the page's label for mainstream end)", "derived": true, "formula": "innov8 'End of Life' 2029-10-09 minus Microsoft lifecycle (PT) mainstream end 2029-11-13 = -35 days", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "The page labels the mainstream end 'End of Life' and defines it as 'Typically 5 years post-release'; 9 October 2029 matches no Microsoft milestone (it is a second Tuesday, so probably an estimate made before Microsoft published the dates). Release date 1 November 2024 matches Microsoft. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#innov8-restates-windows-server-2025-mainstream-end-as-2029-10-09", "citation_text": "Innov8's end-of-life page gives 9 October 2029 as the end of mainstream support for Windows Server 2025, 35 days earlier than the 13 November 2029 on Microsoft's lifecycle page (Innov8, 2026). Source: Innov8 Technology, \"End of Life Information + Sage 200 Version Numbers, Sage 200 Support Status\" (https://innov8.co.uk/end-of-life-information/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#innov8-restates-windows-server-2025-mainstream-end-as-2029-10-09." }, { "id": "innov8-restates-windows-server-2025-extended-end-as-2034-10-09", "family": "restatements-and-aggregators", "statement": "Innov8's end-of-life page gives 9 October 2034 as the end of extended support for Windows Server 2025, 36 days earlier than the 14 November 2034 on Microsoft's lifecycle page (Innov8, 2026).", "short_statement": null, "short_refs": null, "value": -36, "unit": "days off Microsoft's lifecycle date (aggregator minus Microsoft)", "display_value": "9 October 2034 (Microsoft: 14 November 2034)", "display_label": "", "display_hook": null, "row_label": "Innov8: Windows Server 2025, end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2034-10-09", "population": "Windows Server lifecycle dates as listed by a UK Sage reseller's end-of-life page", "sample_n": null, "publisher": "Innov8 Technology", "source_title": "End of Life Information + Sage 200 Version Numbers, Sage 200 Support Status", "source_url": "https://innov8.co.uk/end-of-life-information/", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "Windows Server 2025| November 1, 2024| October 9, 2029| October 9, 2034", "locator": "Section 'Microsoft Windows Server', table row 'Windows Server 2025', column 'Extended Support'", "derived": true, "formula": "innov8 'Extended Support' 2034-10-09 minus Microsoft lifecycle (PT) extended end 2034-11-14 = -36 days", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#innov8-restates-windows-server-2025-extended-end-as-2034-10-09", "citation_text": "Innov8's end-of-life page gives 9 October 2034 as the end of extended support for Windows Server 2025, 36 days earlier than the 14 November 2034 on Microsoft's lifecycle page (Innov8, 2026). Source: Innov8 Technology, \"End of Life Information + Sage 200 Version Numbers, Sage 200 Support Status\" (https://innov8.co.uk/end-of-life-information/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#innov8-restates-windows-server-2025-extended-end-as-2034-10-09." }, { "id": "innov8-2026-10-windows-server-dates-3-discrepancies-no-2012-r2-no-esu", "family": "restatements-and-aggregators", "statement": "3 of the Windows Server 2012 to 2025 dates on Innov8's end-of-life page differ from Microsoft's lifecycle pages in October 2026; the page has no Windows Server 2012 R2 row and lists no Extended Security Update dates or prices (Innov8, 2026).", "short_statement": null, "short_refs": null, "value": 3, "unit": "dates differing from Microsoft's lifecycle pages (Windows Server 2012, 2016, 2019, 2022, 2025)", "display_value": "3 dates off", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "Windows Server lifecycle dates as listed by a UK Sage reseller's end-of-life page", "sample_n": null, "publisher": "Innov8 Technology", "source_title": "End of Life Information + Sage 200 Version Numbers, Sage 200 Support Status", "source_url": "https://innov8.co.uk/end-of-life-information/", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-13", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 Standard| October 30, 2012| October 9, 2018| October 10, 2023", "locator": "Section 'Microsoft Windows Server' table (2012 rows; no 2012 R2 row; no ESU column)", "derived": true, "formula": "Each release, mainstream-end and extended-end date on the innov8 table for 2012 (no 2012 R2 row), 2016, 2019, 2022 and 2025 compared with Microsoft's lifecycle pages (PT display): mismatches = 2016 extended end, 2025 mainstream end, 2025 extended end", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Carries ESU terms or prices: no. 2012 rows match Microsoft (30 Oct 2012, 9 Oct 2018, 10 Oct 2023) but omit the ESU years to 13 Oct 2026; 2019 and 2022 rows match; the mainstream column is labelled 'End of Life'. Lists 'Windows Server 2000' rows (Microsoft's product was Windows 2000 Server). The 2023 Wayback copy had the same 2016 error and no 2022 or 2025 rows. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#innov8-2026-10-windows-server-dates-3-discrepancies-no-2012-r2-no-esu", "citation_text": "3 of the Windows Server 2012 to 2025 dates on Innov8's end-of-life page differ from Microsoft's lifecycle pages in October 2026; the page has no Windows Server 2012 R2 row and lists no Extended Security Update dates or prices (Innov8, 2026). Source: Innov8 Technology, \"End of Life Information + Sage 200 Version Numbers, Sage 200 Support Status\" (https://innov8.co.uk/end-of-life-information/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#innov8-2026-10-windows-server-dates-3-discrepancies-no-2012-r2-no-esu." }, { "id": "itechtics-restates-windows-server-2025-mainstream-end-as-2029-10-09", "family": "restatements-and-aggregators", "statement": "Itechtics' Windows Server lifecycle page gives 9 October 2029 as the end of active support for Windows Server 2025, 35 days earlier than the 13 November 2029 on Microsoft's lifecycle page (Itechtics, 2024).", "short_statement": null, "short_refs": null, "value": -35, "unit": "days off Microsoft's lifecycle date (aggregator minus Microsoft)", "display_value": "9 October 2029 (Microsoft: 13 November 2029)", "display_label": "", "display_hook": null, "row_label": "Itechtics: Windows Server 2025, end of mainstream support", "publisher_short": null, "geography": "Worldwide", "period": "2029-10-09", "population": "Windows Server lifecycle dates as listed by a dates aggregator", "sample_n": null, "publisher": "Itechtics", "source_title": "Windows Server Lifecycle (End Of Life)", "source_url": "https://www.itechtics.com/eol/windows-server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-12-03", "accessed_at": "2026-10-14", "quote": "Windows Server 2025 | 1 year and 11 months ago| (1 November 2024) | Ends in 2 years and 11 months| (9 October 2029)", "locator": "Table 'Version / Released / Active Support / Extended Support', row 'Windows Server 2025'", "derived": true, "formula": "Itechtics 'Active Support' 2029-10-09 minus Microsoft lifecycle (PT) mainstream end 2029-11-13 = -35 days", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Same 9 October 2029 as innov8 (two aggregators share an estimate Microsoft never published). Page 'Last updated on December 3, 2024'; relative ages are computed at view time. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#itechtics-restates-windows-server-2025-mainstream-end-as-2029-10-09", "citation_text": "Itechtics' Windows Server lifecycle page gives 9 October 2029 as the end of active support for Windows Server 2025, 35 days earlier than the 13 November 2029 on Microsoft's lifecycle page (Itechtics, 2024). Source: Itechtics, \"Windows Server Lifecycle (End Of Life)\" (https://www.itechtics.com/eol/windows-server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#itechtics-restates-windows-server-2025-mainstream-end-as-2029-10-09." }, { "id": "itechtics-restates-windows-server-2025-extended-end-as-2034-10-10", "family": "restatements-and-aggregators", "statement": "Itechtics' Windows Server lifecycle page gives 10 October 2034 as the end of extended support for Windows Server 2025, 35 days earlier than the 14 November 2034 on Microsoft's lifecycle page (Itechtics, 2024).", "short_statement": null, "short_refs": null, "value": -35, "unit": "days off Microsoft's lifecycle date (aggregator minus Microsoft)", "display_value": "10 October 2034 (Microsoft: 14 November 2034)", "display_label": "", "display_hook": null, "row_label": "Itechtics: Windows Server 2025, end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2034-10-10", "population": "Windows Server lifecycle dates as listed by a dates aggregator", "sample_n": null, "publisher": "Itechtics", "source_title": "Windows Server Lifecycle (End Of Life)", "source_url": "https://www.itechtics.com/eol/windows-server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-12-03", "accessed_at": "2026-10-14", "quote": "Windows Server 2025 | ... | Ends in 7 years and 11 months| (10 October 2034)", "locator": "Table 'Version / Released / Active Support / Extended Support', row 'Windows Server 2025', column 'Extended Support'", "derived": true, "formula": "Itechtics 'Extended Support' 2034-10-10 minus Microsoft lifecycle (PT) extended end 2034-11-14 = -35 days", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#itechtics-restates-windows-server-2025-extended-end-as-2034-10-10", "citation_text": "Itechtics' Windows Server lifecycle page gives 10 October 2034 as the end of extended support for Windows Server 2025, 35 days earlier than the 14 November 2034 on Microsoft's lifecycle page (Itechtics, 2024). Source: Itechtics, \"Windows Server Lifecycle (End Of Life)\" (https://www.itechtics.com/eol/windows-server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#itechtics-restates-windows-server-2025-extended-end-as-2034-10-10." }, { "id": "itechtics-restates-windows-server-2016-release-as-2016-10-16", "family": "restatements-and-aggregators", "statement": "Itechtics' Windows Server lifecycle page gives 16 October 2016 as the release date of Windows Server 2016, one day after the 15 October 2016 lifecycle start date on Microsoft's lifecycle page (Itechtics, 2024).", "short_statement": null, "short_refs": null, "value": 1, "unit": "days off Microsoft's lifecycle date (aggregator minus Microsoft)", "display_value": "16 October 2016 (Microsoft: 15 October 2016)", "display_label": "", "display_hook": null, "row_label": "Itechtics: Windows Server 2016, release", "publisher_short": null, "geography": "Worldwide", "period": "2016-10-16", "population": "Windows Server lifecycle dates as listed by a dates aggregator", "sample_n": null, "publisher": "Itechtics", "source_title": "Windows Server Lifecycle (End Of Life)", "source_url": "https://www.itechtics.com/eol/windows-server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-12-03", "accessed_at": "2026-10-14", "quote": "Windows Server 2016 | 9 years and 11 months ago| (16 October 2016) | Ended 4 years and 9 months ago| (11 January 2022)", "locator": "Table 'Version / Released / Active Support / Extended Support', row 'Windows Server 2016'", "derived": true, "formula": "Itechtics 'Released' 2016-10-16 minus Microsoft lifecycle (PT) start date 2016-10-15 = +1 day", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "The 2016 mainstream (11 January 2022) and extended (12 January 2027) dates on the same row match Microsoft. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#itechtics-restates-windows-server-2016-release-as-2016-10-16", "citation_text": "Itechtics' Windows Server lifecycle page gives 16 October 2016 as the release date of Windows Server 2016, one day after the 15 October 2016 lifecycle start date on Microsoft's lifecycle page (Itechtics, 2024). Source: Itechtics, \"Windows Server Lifecycle (End Of Life)\" (https://www.itechtics.com/eol/windows-server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#itechtics-restates-windows-server-2016-release-as-2016-10-16." }, { "id": "itechtics-restates-windows-server-2012-r2-release-as-2013-11-13", "family": "restatements-and-aggregators", "statement": "Itechtics' Windows Server lifecycle page gives 13 November 2013 as the release date of Windows Server 2012 R2, 12 days before the 25 November 2013 lifecycle start date on Microsoft's lifecycle page (Itechtics, 2024).", "short_statement": null, "short_refs": null, "value": -12, "unit": "days off Microsoft's lifecycle date (aggregator minus Microsoft)", "display_value": "13 November 2013 (Microsoft: 25 November 2013)", "display_label": "", "display_hook": null, "row_label": "Itechtics: Windows Server 2012 R2, release", "publisher_short": null, "geography": "Worldwide", "period": "2013-11-13", "population": "Windows Server lifecycle dates as listed by a dates aggregator", "sample_n": null, "publisher": "Itechtics", "source_title": "Windows Server Lifecycle (End Of Life)", "source_url": "https://www.itechtics.com/eol/windows-server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-12-03", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 R2 | 12 years and 11 months ago| (13 November 2013) | Ended 8 years and 5 days ago| (9 October 2018)", "locator": "Table 'Version / Released / Active Support / Extended Support', row 'Windows Server 2012 R2'", "derived": true, "formula": "Itechtics 'Released' 2013-11-13 minus Microsoft lifecycle (PT) start date 2013-11-25 = -12 days", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Microsoft's lifecycle start date for 2012 R2 is 25 November 2013 (general availability was 18 October 2013); 13 November 2013 matches neither. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#itechtics-restates-windows-server-2012-r2-release-as-2013-11-13", "citation_text": "Itechtics' Windows Server lifecycle page gives 13 November 2013 as the release date of Windows Server 2012 R2, 12 days before the 25 November 2013 lifecycle start date on Microsoft's lifecycle page (Itechtics, 2024). Source: Itechtics, \"Windows Server Lifecycle (End Of Life)\" (https://www.itechtics.com/eol/windows-server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#itechtics-restates-windows-server-2012-r2-release-as-2013-11-13." }, { "id": "itechtics-restates-windows-server-2012-r2-extended-end-as-2026-10-13", "family": "restatements-and-aggregators", "statement": "Itechtics' Windows Server lifecycle page gives 13 October 2026, the last day of paid Extended Security Updates, as the end of extended support for Windows Server 2012 R2, which Microsoft's lifecycle page dates 10 October 2023 (Itechtics, 2024).", "short_statement": null, "short_refs": null, "value": 1099, "unit": "days off Microsoft's lifecycle date (aggregator minus Microsoft)", "display_value": "13 October 2026 (Microsoft: 10 October 2023)", "display_label": "", "display_hook": null, "row_label": "Itechtics: Windows Server 2012 R2, end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2026-10-13", "population": "Windows Server lifecycle dates as listed by a dates aggregator", "sample_n": null, "publisher": "Itechtics", "source_title": "Windows Server Lifecycle (End Of Life)", "source_url": "https://www.itechtics.com/eol/windows-server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-12-03", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 R2 | ... | Ended 1 day ago| (13 October 2026)", "locator": "Table row 'Windows Server 2012 R2', column 'Extended Support'", "derived": true, "formula": "Itechtics 'Extended Support' 2026-10-13 minus Microsoft lifecycle (PT) extended end 2023-10-10 = +1,099 days (the ESU Year 3 end put in the extended-support column)", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "The page also says the 2012 ESU 'was supposed to expire on 10th October 2023' and that ESU 'could be bought only before October 2022'; 10 October 2023 was the end of extended support, when ESU began. Quote shortened with an ellipsis between the row label and the cell. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#itechtics-restates-windows-server-2012-r2-extended-end-as-2026-10-13", "citation_text": "Itechtics' Windows Server lifecycle page gives 13 October 2026, the last day of paid Extended Security Updates, as the end of extended support for Windows Server 2012 R2, which Microsoft's lifecycle page dates 10 October 2023 (Itechtics, 2024). Source: Itechtics, \"Windows Server Lifecycle (End Of Life)\" (https://www.itechtics.com/eol/windows-server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#itechtics-restates-windows-server-2012-r2-extended-end-as-2026-10-13." }, { "id": "itechtics-2024-12-windows-server-dates-5-discrepancies-says-2012-r2-last-esu", "family": "restatements-and-aggregators", "statement": "5 of the Windows Server 2012 R2 to 2025 dates on Itechtics' lifecycle page differ from Microsoft's lifecycle pages, and the page says Windows Server 2012 R2 was the last version offered Extended Security Updates, which Microsoft has since announced for 2016 (Itechtics, 2024).", "short_statement": null, "short_refs": null, "value": 5, "unit": "dates differing from Microsoft's lifecycle pages (Windows Server 2012 R2, 2016, 2019, 2022, 2025)", "display_value": "5 dates off", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2024-12", "population": "Windows Server lifecycle dates as listed by a dates aggregator", "sample_n": null, "publisher": "Itechtics", "source_title": "Windows Server Lifecycle (End Of Life)", "source_url": "https://www.itechtics.com/eol/windows-server/", "source_type": "secondary", "source_access": "open", "published_at": "2024-12-03", "accessed_at": "2026-10-14", "quote": "the last version available with Extended Security Updates was Windows Server 2012 R2, and the ESU could be bought only before October 2022", "locator": "Section 'End of extended security support', last paragraph", "derived": true, "formula": "Release, mainstream-end and extended-end dates for 2012 R2, 2016, 2019, 2022 and 2025 compared with Microsoft's lifecycle pages (PT display): mismatches = 2012 R2 release, 2012 R2 extended end, 2016 release, 2025 mainstream end, 2025 extended end", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Carries ESU terms: partly (says ESU adds 3 years; gives the 13 October 2026 end) but no prices, and the statement that 2012 R2 was the last ESU version is contradicted by Microsoft's 2026 Azure Arc ESU for Windows Server 2016 through January 2030 (lifecycle-dates-esu and next-versions-adoption families). Also says 'the latest Windows Server version is 2022'. 2019 and 2022 rows match Microsoft. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#itechtics-2024-12-windows-server-dates-5-discrepancies-says-2012-r2-last-esu", "citation_text": "5 of the Windows Server 2012 R2 to 2025 dates on Itechtics' lifecycle page differ from Microsoft's lifecycle pages, and the page says Windows Server 2012 R2 was the last version offered Extended Security Updates, which Microsoft has since announced for 2016 (Itechtics, 2024). Source: Itechtics, \"Windows Server Lifecycle (End Of Life)\" (https://www.itechtics.com/eol/windows-server/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#itechtics-2024-12-windows-server-dates-5-discrepancies-says-2012-r2-last-esu." }, { "id": "endoflife-date-2026-09-windows-server-dates-0-discrepancies-esu-dates-no-prices", "family": "restatements-and-aggregators", "statement": "0 of the Windows Server 2012 R2 to 2025 dates on endoflife.date differ from Microsoft's lifecycle pages in September 2026, and it lists Extended Security Updates for Windows Server 2016 to 12 January 2030 but no prices (endoflife.date, 2026).", "short_statement": null, "short_refs": null, "value": 0, "unit": "dates differing from Microsoft's lifecycle pages (Windows Server 2012 R2, 2016, 2019, 2022, 2025)", "display_value": "0 dates off", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-09", "population": "Windows Server lifecycle dates as listed by a dates aggregator", "sample_n": null, "publisher": "endoflife.date", "source_title": "Microsoft Windows Server | endoflife.date", "source_url": "https://endoflife.date/windows-server", "source_type": "secondary", "source_access": "open", "published_at": "2026-09-24", "accessed_at": "2026-10-14", "quote": "Windows Server 2016 ( LTSC )| 10 years ago (15 Oct 2016)| Ended| 4 years and 9 months ago (11 Jan 2022)| Ends| in 3 months (12 Jan 2027)| Ends| in 3 years (12 Jan 2030)", "locator": "Release table, row 'Windows Server 2016 (LTSC)'; page 'Last updated on 24 September 2026'", "derived": true, "formula": "Release, active-support, security-support and ESU dates for 2012 R2, 2016, 2019, 2022 and 2025 on endoflife.date (page and API /api/windows-server.json, both saved 2026-10-14) compared with Microsoft's lifecycle pages (PT display): 0 mismatches", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Carries ESU terms: dates only (2012/2012 R2 ESU to 13 Oct 2026; 2016 ESU to 12 Jan 2030; 2008/2008 R2 ESU to 10 Jan 2023 without the Azure-only fourth year to 9 Jan 2024), plus a definition ('a maximum of three years after the product's End of Extended Support date'); no prices. Its 2016 ESU end day (12 January 2030) is more precise than Microsoft's Azure Arc page ('through 2030'). endoflife.ai states it takes its data from endoflife.date. Raw: endoflife-date-windows-server.html, endoflife-date-windows-server-api.json. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#endoflife-date-2026-09-windows-server-dates-0-discrepancies-esu-dates-no-prices", "citation_text": "0 of the Windows Server 2012 R2 to 2025 dates on endoflife.date differ from Microsoft's lifecycle pages in September 2026, and it lists Extended Security Updates for Windows Server 2016 to 12 January 2030 but no prices (endoflife.date, 2026). Source: endoflife.date, \"Microsoft Windows Server | endoflife.date\" (https://endoflife.date/windows-server). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#endoflife-date-2026-09-windows-server-dates-0-discrepancies-esu-dates-no-prices." }, { "id": "endoflife-ai-2026-10-windows-server-dates-0-discrepancies-omits-2016-esu", "family": "restatements-and-aggregators", "statement": "0 of the Windows Server 2012 R2 to 2025 dates on endoflife.ai differ from Microsoft's lifecycle pages in October 2026, but its table shows no Extended Security Updates for Windows Server 2016 and no ESU prices (endoflife.ai, 2026).", "short_statement": null, "short_refs": null, "value": 0, "unit": "dates differing from Microsoft's lifecycle pages (Windows Server 2012 R2, 2016, 2019, 2022, 2025)", "display_value": "0 dates off", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "Windows Server lifecycle dates as listed by a dates aggregator", "sample_n": null, "publisher": "endoflife.ai", "source_title": "Windows Server EOL Dates — 2016 to 2025 | endoflife.ai", "source_url": "https://endoflife.ai/windows-server", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "2016 LTS | 10.0.14393| Oct 15, 2016| Jan 12, 2027| —| 91 days remaining| Warning", "locator": "Table 'All Versions', row '2016 LTS' (Extended Support column empty)", "derived": true, "formula": "Release, EOL and extended-support dates for 2012 R2, 2016, 2019, 2022 and 2025 on endoflife.ai compared with Microsoft's lifecycle pages (PT display): 0 mismatches; mainstream dates shown only for 2025 in the summary text (13 Nov 2029, matches)", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Carries ESU terms: ESU year-end dates for 2008 R2 (including the Azure-only Year 4 to 9 Jan 2024) and 2012/2012 R2 (8 Oct 2024, 14 Oct 2025, 13 Oct 2026), all matching Microsoft; no 2016 ESU although its stated upstream (endoflife.date) lists one to 12 Jan 2030; no prices. The page says its data come 'from endoflife.date, checked against the vendor's own lifecycle pages'. Built at every deploy ('90 days from this build' implies a 14 October 2026 build; the banner says 91 days). Its CISA KEV count is a separate record. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#endoflife-ai-2026-10-windows-server-dates-0-discrepancies-omits-2016-esu", "citation_text": "0 of the Windows Server 2012 R2 to 2025 dates on endoflife.ai differ from Microsoft's lifecycle pages in October 2026, but its table shows no Extended Security Updates for Windows Server 2016 and no ESU prices (endoflife.ai, 2026). Source: endoflife.ai, \"Windows Server EOL Dates — 2016 to 2025 | endoflife.ai\" (https://endoflife.ai/windows-server). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#endoflife-ai-2026-10-windows-server-dates-0-discrepancies-omits-2016-esu." }, { "id": "jimber-2026-08-windows-server-dates-0-discrepancies-esu-priced-75-100-125pct", "family": "restatements-and-aggregators", "statement": "0 of the Windows Server 2012 R2 to 2025 dates in Jimber's end-of-life timeline differ from Microsoft's lifecycle pages, but it prices Extended Security Updates at about 75%, 100% and 125% of the licence price in years one to three (Jimber, 2026).", "short_statement": null, "short_refs": null, "value": 0, "unit": "dates differing from Microsoft's lifecycle pages (Windows Server 2012 R2, 2016, 2019, 2022, 2025)", "display_value": "0 dates off", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-08", "population": "Windows Server lifecycle dates as listed by a security vendor's blog", "sample_n": null, "publisher": "Jimber", "source_title": "Windows Server End-of-Life Dates: the 2012–2025 Timeline and What to Do per Version", "source_url": "https://jimber.io/blog/windows-server-end-of-life-timeline/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-08-18", "accessed_at": "2026-10-14", "quote": "Server ESU is priced per core, as an escalating percentage of the current licence list price: roughly 75% in year one, 100% in year two, 125% in year three.", "locator": "Section 'What ESU really costs', first paragraph; dates in 'The Windows Server end-of-life timeline' table ('Last verified: August 2026')", "derived": true, "formula": "Release, mainstream-end, extended-end and ESU dates for 2012 R2, 2016, 2019, 2022 and 2025 in Jimber's table compared with Microsoft's lifecycle pages (PT display): 0 mismatches", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Carries ESU terms and prices: yes, but the price rule drifts from Microsoft's: the lifecycle FAQ prices on-premises Windows Server 2012/R2 ESU at 'Year 1: 100% of full license price annually' (and the same for years 2 and 3); 75% a year was the Windows Server 2008 rule. Jimber's table: 16-core Standard host about $5,610 over three years, and 'Workload hosted in Azure / Azure Local: 0 (ESU included)', which ServNet UK (July 2026) says no longer holds for 2016 under Microsoft's April 2026 pricing model (same list price wherever the workload runs); lifecycle-dates-esu to confirm against Microsoft. Also notes the PT-versus-UTC 12/13 January 2027 issue and gives the 2016 ESU window as '13 Jan 2027 to 12 Jan 2030 (Azure Arc enrolment opens 3 Aug 2026)'. Published 18 August 2026, modified 19 September 2026. Its 'one in five' and Lansweeper sentences are separate records. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#jimber-2026-08-windows-server-dates-0-discrepancies-esu-priced-75-100-125pct", "citation_text": "0 of the Windows Server 2012 R2 to 2025 dates in Jimber's end-of-life timeline differ from Microsoft's lifecycle pages, but it prices Extended Security Updates at about 75%, 100% and 125% of the licence price in years one to three (Jimber, 2026). Source: Jimber, \"Windows Server End-of-Life Dates: the 2012–2025 Timeline and What to Do per Version\" (https://jimber.io/blog/windows-server-end-of-life-timeline/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#jimber-2026-08-windows-server-dates-0-discrepancies-esu-priced-75-100-125pct." }, { "id": "raff-2026-09-windows-server-dates-0-discrepancies-says-esu-price-roughly-doubles", "family": "restatements-and-aggregators", "statement": "0 of the Windows Server 2012 R2 to 2025 dates on Raff Technologies' end-of-life page differ from Microsoft's lifecycle pages, but it says the per-server ESU price roughly doubles each year (Raff Technologies, 2026).", "short_statement": null, "short_refs": null, "value": 0, "unit": "dates differing from Microsoft's lifecycle pages (Windows Server 2012 R2, 2016, 2019, 2022, 2025)", "display_value": "0 dates off", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-09", "population": "Windows Server lifecycle dates as listed by a cloud-hosting vendor's guide", "sample_n": null, "publisher": "Raff Technologies", "source_title": "Windows Server End of Life Dates: Every Version Compared", "source_url": "https://rafftechnologies.com/windows-server/windows-server-end-of-life-dates", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-09-17", "accessed_at": "2026-10-14", "quote": "Server 2016 ESU runs to January 2030; Server 2012/R2 ESU ends October 13, 2026. ESU covers security patches only and its per-server price roughly doubles each year.", "locator": "FAQ 'Can I still get updates for a version that reached end of life?'", "derived": true, "formula": "Mainstream-end, extended-end and ESU dates for 2012/2012 R2, 2016, 2019, 2022 and 2025 in Raff's table compared with Microsoft's lifecycle pages (PT display): 0 mismatches (release dates given as years only)", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Carries ESU terms: dates yes (2012/R2 Year 3 ends 13 Oct 2026; 2016 'through 2030', explicitly declining to invent a day), no price figures; the 'roughly doubles each year' rule contradicts Microsoft's flat 100% of licence price per year for 2012/R2 on-premises ESU (doubling is the Windows 10 commercial ESU rule). Raff says it uses the ISO dates of Microsoft's release-information table and warns that lifecycle pages 'can display an adjacent calendar date'. Published 5 August 2026, updated 17 September 2026, 'Sources revalidated: 2026-09-17'. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#raff-2026-09-windows-server-dates-0-discrepancies-says-esu-price-roughly-doubles", "citation_text": "0 of the Windows Server 2012 R2 to 2025 dates on Raff Technologies' end-of-life page differ from Microsoft's lifecycle pages, but it says the per-server ESU price roughly doubles each year (Raff Technologies, 2026). Source: Raff Technologies, \"Windows Server End of Life Dates: Every Version Compared\" (https://rafftechnologies.com/windows-server/windows-server-end-of-life-dates). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#raff-2026-09-windows-server-dates-0-discrepancies-says-esu-price-roughly-doubles." }, { "id": "lansweeper-2026-06-windows-server-eol-dates-0-discrepancies-no-2016-esu", "family": "restatements-and-aggregators", "statement": "0 of the Windows Server 2012 R2 to 2025 end-of-support dates on Lansweeper's Windows Server end-of-life page differ from Microsoft's lifecycle pages in June 2026, and it gives no Windows Server 2016 ESU or prices (Lansweeper, 2026).", "short_statement": null, "short_refs": null, "value": 0, "unit": "dates differing from Microsoft's lifecycle pages (extended-end dates only)", "display_value": "0 dates off", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-06", "population": "Windows Server lifecycle dates as listed by an asset-inventory vendor's blog", "sample_n": null, "publisher": "Lansweeper", "source_title": "Windows Server End of Life", "source_url": "https://www.lansweeper.com/blog/eol/windows-server-end-of-life/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-06-16", "accessed_at": "2026-10-14", "quote": "Windows Server 2016 (LTSB)| Jan. 12, 2027| Windows Server 2012 R2| Oct 10, 2023", "locator": "Section 'Windows Server Lifecycle Policy', table 'Version / End of Support'", "derived": true, "formula": "Extended-end dates for 2012 R2, 2016, 2019, 2022 and 2025 in Lansweeper's 'Version / End of Support' table compared with Microsoft's lifecycle pages (PT display): 0 mismatches", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Carries ESU terms: 2012/R2 ESU end 13 October 2026 and 2008/R2 four years with the Azure-only fourth year to 9 January 2024; no prices; no mention of the 2016 ESU announced in 2026. Labels 2016 'LTSB' (a Windows 10 client term). The brief's community.lansweeper.com Server 2012 EOL URL fetched by the earlier collector redirected to this page; it carries no install-base percentages (no 20.94%, no 20.3%). Esben Dochy, 16 June 2026. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#lansweeper-2026-06-windows-server-eol-dates-0-discrepancies-no-2016-esu", "citation_text": "0 of the Windows Server 2012 R2 to 2025 end-of-support dates on Lansweeper's Windows Server end-of-life page differ from Microsoft's lifecycle pages in June 2026, and it gives no Windows Server 2016 ESU or prices (Lansweeper, 2026). Source: Lansweeper, \"Windows Server End of Life\" (https://www.lansweeper.com/blog/eol/windows-server-end-of-life/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#lansweeper-2026-06-windows-server-eol-dates-0-discrepancies-no-2016-esu." }, { "id": "petri-2026-08-10-restates-windows-server-2016-extended-end-as-2017-01-12", "family": "restatements-and-aggregators", "statement": "Petri's 10 August 2026 report on Windows Server 2016 ESU says extended support ends on 12 January 2017, a ten-year typo for Microsoft's 12 January 2027, while quoting Microsoft's correct date two paragraphs later (Petri, 2026).", "short_statement": null, "short_refs": null, "value": -3652, "unit": "days off Microsoft's lifecycle date (outlet minus Microsoft)", "display_value": "12 January 2017 (Microsoft: 12 January 2027)", "display_label": "", "display_hook": null, "row_label": "Petri: Windows Server 2016, end of extended support (typo)", "publisher_short": null, "geography": "Worldwide", "period": "2017-01-12", "population": "Windows Server 2016 end-of-support date as printed by trade press", "sample_n": null, "publisher": "Petri", "source_title": "Microsoft Makes Azure Arc-Enabled ESUs for Windows Server 2016 Generally Available", "source_url": "https://petri.com/azure-arc-enabled-esus-windows-server-2016/", "source_type": "secondary", "source_access": "open", "published_at": "2026-08-10", "accessed_at": "2026-10-14", "quote": "Microsoft plans to end extended support for Windows Server 2016 on January 12, 2017.", "locator": "Article body, second paragraph after 'Key Takeaways' (Rabia Noureen)", "derived": true, "formula": "Petri 2017-01-12 minus Microsoft lifecycle (PT) extended end 2027-01-12 = -3,652 days", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "The same article quotes Microsoft: 'covering January 12, 2027 through January 2030' and says ESU runs 'through January 2030', so the 2017 is a typo, not a source error. Trade press, not an aggregator; included as the sharpest date drift found. Microsoft's lifecycle pages (learn.microsoft.com/en-us/lifecycle/products/windows-server-2012-r2, -2016, -2019, -2022, -2025, fetched 2026-10-14) store end dates as UTC timestamps (e.g. '1/13/2027 6:59:59 AM') inside a element, so the page displays the Pacific Time date one day earlier (12 January 2027). Microsoft PT dates used as the baseline: 2012 R2 start 25 Nov 2013, mainstream end 9 Oct 2018, extended end 10 Oct 2023, ESU Year 3 end 13 Oct 2026; 2016 start 15 Oct 2016, mainstream end 11 Jan 2022, extended end 12 Jan 2027; 2019 start 13 Nov 2018, 9 Jan 2024, 9 Jan 2029; 2022 start 18 Aug 2021, 13 Oct 2026, 14 Oct 2031; 2025 start 1 Nov 2024, 13 Nov 2029, 14 Nov 2034. Raw: ms-lifecycle-windows-server-*.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#petri-2026-08-10-restates-windows-server-2016-extended-end-as-2017-01-12", "citation_text": "Petri's 10 August 2026 report on Windows Server 2016 ESU says extended support ends on 12 January 2017, a ten-year typo for Microsoft's 12 January 2027, while quoting Microsoft's correct date two paragraphs later (Petri, 2026). Source: Petri, \"Microsoft Makes Azure Arc-Enabled ESUs for Windows Server 2016 Generally Available\" (https://petri.com/azure-arc-enabled-esus-windows-server-2016/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#petri-2026-08-10-restates-windows-server-2016-extended-end-as-2017-01-12." }, { "id": "theregister-2026-03-02-subhead-more-than-a-fifth-of-servers-on-windows-server-2016", "family": "restatements-and-aggregators", "statement": "'More than a fifth of servers still on Windows Server 2016' was The Register's 2 March 2026 subheading for Lansweeper's figure of 20.3% of the servers it monitors, the oldest dated appearance of the claim found (The Register, 2026).", "short_statement": null, "short_refs": null, "value": 20.3, "unit": "% of servers monitored by Lansweeper (as stated by The Register)", "display_value": "more than a fifth (20.3%)", "display_label": "The Register, 2 March 2026, quoting Lansweeper data", "display_hook": null, "row_label": "2 March 2026, The Register: 'more than a fifth of servers' (Lansweeper's monitored servers)", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2026-03", "population": "Servers monitored by Lansweeper at its customers (count not stated)", "sample_n": null, "publisher": "The Register", "source_title": "Windows 11 tops market share as 10 faces extended farewell", "source_url": "https://www.theregister.com/2026/03/02/windows_11_market_share/", "source_type": "secondary", "source_access": "open", "published_at": "2026-03-02", "accessed_at": "2026-10-14", "quote": "More than a fifth of servers still on Windows Server 2016 ... According to Lansweeper, Windows Server 2016 has a 20.3 percent share of all the servers it monitors.", "locator": "Standfirst under the headline, and the paragraph after the Windows 10 LTSB discussion (Richard Speed); oldest capture https://web.archive.org/web/20260302132104/https://www.theregister.com/2026/03/02/windows_11_market_share/", "derived": false, "formula": null, "headline": false, "series": "one-in-five-windows-server-2016-appearances", "history": [], "notes": "Wording record: the standfirst rounds 20.3% to 'more than a fifth' and drops 'that Lansweeper monitors'. The article now resolves to https://www.theregister.com/software/2026/03/02/windows-11-tops-market-share-as-10-faces-extended-farewell/4577624 (first CDX capture of that URL 6 May 2026). Trail: Lansweeper gave the figure (20.3% of the servers it monitors run Windows Server 2016) to The Register, published 2 March 2026 12:33 UTC with the subheading 'More than a fifth of servers still on Windows Server 2016'; the oldest Wayback capture (CDX, 20260302132104) already carries both. No Lansweeper-owned publication of a Windows Server 2016 share was found: lansweeper.com site search for 'windows server 2016' returns only its SQL Server EOL guide, and its 16 June 2026 'Windows Server End of Life' page carries dates only (searched by the next-versions-adoption collector, raw/next-versions-adoption/lansweeper-search-ws2016.txt, and re-read here). The figure itself is recorded by next-versions-adoption as theregister-2026-03-02-lansweeper-windows-server-2016-share-20-3pct-of-servers-monitored; population size not stated. Raw: theregister-2026-03-02-windows-11-market-share.html, theregister-2026-03-02-wb-20260302132104.html, cdx-www_theregister_com_2026_03_02_windows_11_market_share_.json.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2026-03-02-subhead-more-than-a-fifth-of-servers-on-windows-server-2016", "citation_text": "'More than a fifth of servers still on Windows Server 2016' was The Register's 2 March 2026 subheading for Lansweeper's figure of 20.3% of the servers it monitors, the oldest dated appearance of the claim found (The Register, 2026). Source: The Register, \"Windows 11 tops market share as 10 faces extended farewell\" (https://www.theregister.com/2026/03/02/windows_11_market_share/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2026-03-02-subhead-more-than-a-fifth-of-servers-on-windows-server-2016." }, { "id": "airit-2026-05-07-restates-lansweeper-20-3pct-as-one-in-five-servers-independent-analysis", "family": "restatements-and-aggregators", "statement": "'Around one in five servers in monitored environments' still run Windows Server 2016, Air IT wrote on 7 May 2026, calling Lansweeper's vendor telemetry 'recent independent analysis' and linking The Register's report (Air IT, 2026).", "short_statement": null, "short_refs": null, "value": 20, "unit": "% of servers (as stated: 'around one in five')", "display_value": "around one in five", "display_label": "", "display_hook": null, "row_label": "7 May 2026, Air IT: 'around one in five', called independent analysis", "publisher_short": null, "geography": "Worldwide (as implied)", "period": "2026-05", "population": "'servers in monitored environments' (Lansweeper's customer servers, unnamed)", "sample_n": null, "publisher": "Air IT Group", "source_title": "Windows Server 2016 End of Life: What to Do Next in 2026", "source_url": "https://www.airit.co.uk/insights-resources/windows-server-2016-end-of-life/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-05-07", "accessed_at": "2026-10-14", "quote": "Recent independent analysis suggests that around one in five servers in monitored environments are still running Windows Server 2016", "locator": "Section after the bullet list of risks, paragraph starting 'And this isn't a niche issue'; the words 'around one in five servers' link to theregister.com/2026/03/02/windows_11_market_share/", "derived": false, "formula": null, "headline": false, "series": "one-in-five-windows-server-2016-appearances", "history": [], "notes": "Cites: The Register (hyperlink), not Lansweeper. Drift: Lansweeper (an asset-inventory vendor reporting its own customers' data) becomes 'independent analysis'; Lansweeper is not named; 20.3% becomes 'around one in five'. UK managed-service provider blog. Oldest Wayback capture 2026-06-10 (CDX, raw cdx-www_airit_co_uk_insights-resources_windows-server-2016-end-of-life_.json). Trail: Lansweeper gave the figure (20.3% of the servers it monitors run Windows Server 2016) to The Register, published 2 March 2026 12:33 UTC with the subheading 'More than a fifth of servers still on Windows Server 2016'; the oldest Wayback capture (CDX, 20260302132104) already carries both. No Lansweeper-owned publication of a Windows Server 2016 share was found: lansweeper.com site search for 'windows server 2016' returns only its SQL Server EOL guide, and its 16 June 2026 'Windows Server End of Life' page carries dates only (searched by the next-versions-adoption collector, raw/next-versions-adoption/lansweeper-search-ws2016.txt, and re-read here). The figure itself is recorded by next-versions-adoption as theregister-2026-03-02-lansweeper-windows-server-2016-share-20-3pct-of-servers-monitored; population size not stated.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#airit-2026-05-07-restates-lansweeper-20-3pct-as-one-in-five-servers-independent-analysis", "citation_text": "'Around one in five servers in monitored environments' still run Windows Server 2016, Air IT wrote on 7 May 2026, calling Lansweeper's vendor telemetry 'recent independent analysis' and linking The Register's report (Air IT, 2026). Source: Air IT Group, \"Windows Server 2016 End of Life: What to Do Next in 2026\" (https://www.airit.co.uk/insights-resources/windows-server-2016-end-of-life/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#airit-2026-05-07-restates-lansweeper-20-3pct-as-one-in-five-servers-independent-analysis." }, { "id": "servnet-2026-07-16-restates-lansweeper-20-3pct-as-one-in-five-servers-it-monitors", "family": "restatements-and-aggregators", "statement": "One in five (20.3%) of the servers Lansweeper monitors still ran Windows Server 2016, Servnet wrote on 16 July 2026, citing 'Lansweeper data reported by The Register in March 2026' without a link (ServNet UK, 2026).", "short_statement": null, "short_refs": null, "value": 20.3, "unit": "% of servers monitored by Lansweeper (as restated)", "display_value": "one in five (20.3%)", "display_label": "", "display_hook": null, "row_label": "16 July 2026, Servnet: 'one in five (20.3%)' of the servers Lansweeper monitors", "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2026-07", "population": "Servers monitored by Lansweeper (as restated)", "sample_n": null, "publisher": "Servnet Research (Servnet Limited)", "source_title": "Windows Server 2016 EOL: The January 2027 Migration Dataset", "source_url": "https://www.servnetuk.com/research/windows-server-2016-eol-countdown-2027", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-07-16", "accessed_at": "2026-10-14", "quote": "Yet Lansweeper data reported in March 2026 found one in five (20.3%) of the servers it monitors still running the OS", "locator": "Opening paragraph; repeated in 'Key statistics' ('~20% Monitored servers still on Windows Server 2016 (Lansweeper, March 2026)') and section 02 'The Installed Base'", "derived": false, "formula": null, "headline": false, "series": "one-in-five-windows-server-2016-appearances", "history": [], "notes": "Cites: 'Lansweeper data reported by The Register in March 2026' (text only; the only link near it goes to ServNet's own /server-end-of-life page). The most faithful restatement: keeps 20.3% and 'servers it monitors', and section 02 adds 'a proportion of active server estates, not a count of organisations'. Same page sets it beside 6sense's '391 UK companies' and '0.50%' share (separate 6sense records). ServNet is a UK server reseller and maintenance firm. Published 16 July 2026, modified 15 September 2026. No Wayback capture (CDX returned none on 2026-10-14). Trail: Lansweeper gave the figure (20.3% of the servers it monitors run Windows Server 2016) to The Register, published 2 March 2026 12:33 UTC with the subheading 'More than a fifth of servers still on Windows Server 2016'; the oldest Wayback capture (CDX, 20260302132104) already carries both. No Lansweeper-owned publication of a Windows Server 2016 share was found: lansweeper.com site search for 'windows server 2016' returns only its SQL Server EOL guide, and its 16 June 2026 'Windows Server End of Life' page carries dates only (searched by the next-versions-adoption collector, raw/next-versions-adoption/lansweeper-search-ws2016.txt, and re-read here). The figure itself is recorded by next-versions-adoption as theregister-2026-03-02-lansweeper-windows-server-2016-share-20-3pct-of-servers-monitored; population size not stated.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#servnet-2026-07-16-restates-lansweeper-20-3pct-as-one-in-five-servers-it-monitors", "citation_text": "One in five (20.3%) of the servers Lansweeper monitors still ran Windows Server 2016, Servnet wrote on 16 July 2026, citing 'Lansweeper data reported by The Register in March 2026' without a link (ServNet UK, 2026). Source: Servnet Research (Servnet Limited), \"Windows Server 2016 EOL: The January 2027 Migration Dataset\" (https://www.servnetuk.com/research/windows-server-2016-eol-countdown-2027). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#servnet-2026-07-16-restates-lansweeper-20-3pct-as-one-in-five-servers-it-monitors." }, { "id": "jimber-2026-08-18-restates-one-in-five-enterprise-servers-on-windows-server-2016-unsourced", "family": "restatements-and-aggregators", "statement": "'Roughly one in five enterprise servers' still runs Windows Server 2016, Jimber wrote on 18 August 2026, attributing it only to unnamed 'telemetry' with no link, the furthest drift from Lansweeper's 20.3% of its monitored servers (Jimber, 2026).", "short_statement": null, "short_refs": null, "value": 20, "unit": "% of enterprise servers (as stated: 'roughly one in five')", "display_value": "roughly one in five", "display_label": "", "display_hook": null, "row_label": "18 August 2026, Jimber: 'roughly one in five enterprise servers', no source", "publisher_short": null, "geography": "Worldwide (as implied)", "period": "2026-08", "population": "'enterprise servers' (unspecified)", "sample_n": null, "publisher": "Jimber", "source_title": "Windows Server End-of-Life Dates: the 2012–2025 Timeline and What to Do per Version", "source_url": "https://jimber.io/blog/windows-server-end-of-life-timeline/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-08-18", "accessed_at": "2026-10-14", "quote": "Telemetry suggests roughly one in five enterprise servers still runs Windows Server 2016 as its deadline approaches", "locator": "Introduction, second paragraph", "derived": false, "formula": null, "headline": false, "series": "one-in-five-windows-server-2016-appearances", "history": [], "notes": "Cites: nothing (no link; the only link in the paragraph goes to Jimber's FortiGate timeline). Drift: the population becomes 'enterprise servers', the source becomes 'telemetry', Lansweeper and The Register vanish, and the next clause in the same sentence names Lansweeper only for the 2023 Server 2012 audit, so a reader would assume both figures are Lansweeper audits of the same kind. This is the 'vendor blog' the page brief's 'numbers we will not publish' list meant; the claim does trace to a dated Lansweeper figure via The Register. No Wayback capture (CDX returned none on 2026-10-14). Trail: Lansweeper gave the figure (20.3% of the servers it monitors run Windows Server 2016) to The Register, published 2 March 2026 12:33 UTC with the subheading 'More than a fifth of servers still on Windows Server 2016'; the oldest Wayback capture (CDX, 20260302132104) already carries both. No Lansweeper-owned publication of a Windows Server 2016 share was found: lansweeper.com site search for 'windows server 2016' returns only its SQL Server EOL guide, and its 16 June 2026 'Windows Server End of Life' page carries dates only (searched by the next-versions-adoption collector, raw/next-versions-adoption/lansweeper-search-ws2016.txt, and re-read here). The figure itself is recorded by next-versions-adoption as theregister-2026-03-02-lansweeper-windows-server-2016-share-20-3pct-of-servers-monitored; population size not stated.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#jimber-2026-08-18-restates-one-in-five-enterprise-servers-on-windows-server-2016-unsourced", "citation_text": "'Roughly one in five enterprise servers' still runs Windows Server 2016, Jimber wrote on 18 August 2026, attributing it only to unnamed 'telemetry' with no link, the furthest drift from Lansweeper's 20.3% of its monitored servers (Jimber, 2026). Source: Jimber, \"Windows Server End-of-Life Dates: the 2012–2025 Timeline and What to Do per Version\" (https://jimber.io/blog/windows-server-end-of-life-timeline/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#jimber-2026-08-18-restates-one-in-five-enterprise-servers-on-windows-server-2016-unsourced." }, { "id": "jimber-2026-08-18-restates-lansweeper-2023-20-94pct-as-long-past-end-of-life", "family": "restatements-and-aggregators", "statement": "A Lansweeper audit of 1.3 million Windows Server installations found 20.94% still on Server 2012/R2 'long past its end of life', Jimber wrote in August 2026, although Lansweeper's September 2023 audit predates that end of support by five weeks (Jimber, 2026).", "short_statement": null, "short_refs": null, "value": 20.94, "unit": "% of Windows Server instances inventoried by Lansweeper (as restated)", "display_value": "20.94%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2023-09", "population": "Windows Server instances inventoried by Lansweeper (restated as 'installations')", "sample_n": 1300000, "publisher": "Jimber", "source_title": "Windows Server End-of-Life Dates: the 2012–2025 Timeline and What to Do per Version", "source_url": "https://jimber.io/blog/windows-server-end-of-life-timeline/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-08-18", "accessed_at": "2026-10-14", "quote": "a Lansweeper audit of 1.3 million Windows Server installations found 20.94% still on Server 2012/R2 long past its end of life", "locator": "Introduction, second paragraph", "derived": false, "formula": null, "headline": false, "series": "lansweeper-2023-restatements", "history": [], "notes": "Cites: nothing (no link, no date). Original: Lansweeper's September 2023 figure (reported by Techzine on 1 September 2023: '20.94 percent are still using Windows Server 2012', 1.3 million instances at more than 35,000 organisations; reusable id techzine-2023-09-01-lansweeper-windows-server-2012-share-20-94pct, owned by install-base-audits). Drift: an undated 2023 snapshot taken before the 10 October 2023 end of support is presented as current and 'long past its end of life'; 'instances' becomes 'installations'.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#jimber-2026-08-18-restates-lansweeper-2023-20-94pct-as-long-past-end-of-life", "citation_text": "A Lansweeper audit of 1.3 million Windows Server installations found 20.94% still on Server 2012/R2 'long past its end of life', Jimber wrote in August 2026, although Lansweeper's September 2023 audit predates that end of support by five weeks (Jimber, 2026). Source: Jimber, \"Windows Server End-of-Life Dates: the 2012–2025 Timeline and What to Do per Version\" (https://jimber.io/blog/windows-server-end-of-life-timeline/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#jimber-2026-08-18-restates-lansweeper-2023-20-94pct-as-long-past-end-of-life." }, { "id": "wikipedia-windows-server-2012-restates-smart-profile-34pct-dutch-businesses-as-35pct-of-servers", "family": "restatements-and-aggregators", "statement": "'As of April 2017, 35% of servers were running Windows Server 2012, surpassing usage share of Windows Server 2008', says Wikipedia's Windows Server 2012 article, citing a Smart Profile paper that measured 34% of Dutch business sites with 50 or more employees (Wikipedia, 2026).", "short_statement": null, "short_refs": null, "value": 35, "unit": "% of servers (as stated by Wikipedia; the source measures % of Dutch business sites)", "display_value": "35% (source: about 34% of Dutch sites)", "display_label": "Wikipedia, Windows Server 2012 article, sentence added 25 May 2023", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Netherlands (source); unstated on Wikipedia", "period": "2017-04", "population": "Source: business sites in the Netherlands with 50 or more employees (about 2,000 interviews, Computer Profile)", "sample_n": null, "publisher": "Wikipedia", "source_title": "Windows Server 2012", "source_url": "https://en.wikipedia.org/wiki/Windows_Server_2012", "source_type": "secondary", "source_access": "open", "published_at": "2023-05-25", "accessed_at": "2026-10-14", "quote": "As of April 2017, 35% of servers were running Windows Server 2012, surpassing usage share of Windows Server 2008.", "locator": "Lead section, last sentence before 'History' (reference [7] in the 14 October 2026 rendering)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Cites: reference 7, 'Windows Server 2012 approximately equal to Windows Server 2008', SmartProfile, 25 August 2017 (smartprofile.io/analytics-papers/windows-server-2012-approximately-equal-windows-server-2008/). Fetched: the paper says 2012 use rose 'to the current 34 percent' of 'businesses with 50 or more employees' on the Dutch market (about 2,000 interviews), and its chart (Computer Profile, May 2017, 'All sites with 50 or more employees / The Netherlands') puts 2017-April at about 34% for 2012 and about 35% for 2008. Drift: (1) a Dutch site share becomes '35% of servers' with no country; (2) 'approximately equal' becomes 'surpassing' (the chart still has 2008 marginally ahead; the text says 2012 leads only in the public and mid-size segments); (3) 35% is the 2008 line. History: added on 25 May 2023 15:38 UTC by an anonymous editor (IP 46.8.172.178) as 'As of March 2017, 39, 96% of servers were running Windows Server 2012', changed at 18:50 UTC to the current wording with the comment 'The source says usage share as of April 2017, not March 2017. Also I added that Windows Server 2012 surpassed usage share of Windows Server 2008' (revisions 1156980025, 1157007377, 1157007439; raw wikipedia-ws2012-revisions-2023.json and the two diff JSONs). Wayback snapshots from 2017-09 to 2023-01-01 lack the sentence; 2023-12-27 onwards carry it. So 'Wikipedia's latest share is April 2017' (page brief) is a 2023 addition about 2017 Dutch data. Overlap: install-base-audits records Wikipedia's share as history.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#wikipedia-windows-server-2012-restates-smart-profile-34pct-dutch-businesses-as-35pct-of-servers", "citation_text": "'As of April 2017, 35% of servers were running Windows Server 2012, surpassing usage share of Windows Server 2008', says Wikipedia's Windows Server 2012 article, citing a Smart Profile paper that measured 34% of Dutch business sites with 50 or more employees (Wikipedia, 2026). Source: Wikipedia, \"Windows Server 2012\" (https://en.wikipedia.org/wiki/Windows_Server_2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#wikipedia-windows-server-2012-restates-smart-profile-34pct-dutch-businesses-as-35pct-of-servers." }, { "id": "theregister-2014-11-27-restates-gartner-one-in-five-businesses-will-miss-server-2003-deadline", "family": "restatements-and-aggregators", "statement": "One in five businesses running Windows Server 2003 would miss its July 2015 end-of-support deadline, Gartner had predicted, The Register reported on 27 November 2014, an earlier 'one in five' about a different version (The Register, 2014).", "short_statement": null, "short_refs": null, "value": 20, "unit": "% of businesses running Windows Server 2003 predicted to miss the deadline (as stated: 'one in five')", "display_value": "one in five", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2014-11", "population": "Businesses running Windows Server 2003 (Gartner prediction)", "sample_n": null, "publisher": "The Register", "source_title": "A WHOPPING 8 million Windows Server 2003 systems still out there", "source_url": "https://www.theregister.com/off-prem/2014/11/27/a-whopping-8-million-windows-server-2003-systems-still-out-there/1520249", "source_type": "secondary", "source_access": "open", "published_at": "2014-11-27", "accessed_at": "2026-10-14", "quote": "It previously predicted one in five businesses running Windows Server 2003 will miss the end of support deadline.", "locator": "Paragraph after the Gartner 8 million estimate (Paul Kunert)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Cites: Gartner (no report named or linked; 'it' refers to Gartner, research director Errol Rasit quoted in the same piece). Not a source for the 2016 claim: listed so the page does not conflate the two. The Gartner prediction itself was not fetched (Gartner research is paywalled); unverified as Gartner's wording, verified as The Register's. Raw: theregister-2014-11-27-server-2003-gartner.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-11-27-restates-gartner-one-in-five-businesses-will-miss-server-2003-deadline", "citation_text": "One in five businesses running Windows Server 2003 would miss its July 2015 end-of-support deadline, Gartner had predicted, The Register reported on 27 November 2014, an earlier 'one in five' about a different version (The Register, 2014). Source: The Register, \"A WHOPPING 8 million Windows Server 2003 systems still out there\" (https://www.theregister.com/off-prem/2014/11/27/a-whopping-8-million-windows-server-2003-systems-still-out-there/1520249). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theregister-2014-11-27-restates-gartner-one-in-five-businesses-will-miss-server-2003-deadline." }, { "id": "redmondmag-2014-09-18-restates-microsoft-24-million-server-2003-instances-on-12-million-servers", "family": "restatements-and-aggregators", "statement": "24 million Windows Server 2003 instances, half physical and half virtual, ran on 12 million physical servers worldwide in July 2014, 39% of the Windows Server installed base, Redmond Magazine reported from Microsoft data (Redmond Magazine, 2014).", "short_statement": null, "short_refs": null, "value": 24000000, "unit": "Windows Server 2003 instances (physical and virtual; Microsoft data as reported)", "display_value": "24 million instances on 12 million servers", "display_label": "Microsoft data reported by Redmond Magazine, July 2014", "display_hook": null, "row_label": "Redmond Magazine, September 2014: 'Microsoft data', instances", "publisher_short": null, "geography": "Worldwide", "period": "2014-07", "population": "Windows Server 2003 instances worldwide (Microsoft estimate, method not stated)", "sample_n": null, "publisher": "Redmond Magazine", "source_title": "Prepare for Windows Server 2003's End of Support", "source_url": "https://redmondmag.com/articles/2014/09/18/server-2003-end-of-support.aspx", "source_type": "secondary", "source_access": "open", "published_at": "2014-09-18", "accessed_at": "2026-10-14", "quote": "As of July, Microsoft reported that globally there are 24 million instances -- half physical, half virtual -- of Windows Server 2003 running on 12 million physical servers.", "locator": "Section on the installed base, paragraph after the 37 critical updates in 2013", "derived": false, "formula": null, "headline": false, "series": "server-2003-installed-base-claims", "history": [], "notes": "Cites: 'Microsoft reported' (no link). Same paragraph: 9.4 million instances in North America; 'Windows Server 2003 accounted for 39 percent of the Windows Server installed base, according to Microsoft data'. The same article quotes Gartner's advice to budget $1,500 per server per year for keeping 2003 past the deadline. This is the article CISA's TA14-310A cites as its reference [3]. 'Half physical, half virtual' with 24 million instances on 12 million physical servers is internally inconsistent unless each physical server also hosts one virtual instance; outlets later quote either number alone. No Microsoft-owned page carrying the July 2014 count was fetched by this family (the eol-history-2003-2008 family traces the origin); every outlet below attributes it to Microsoft without a link, and the most detailed version (Redmond Magazine, 18 September 2014) says 'As of July, Microsoft reported', i.e. Microsoft's July 2014 partner-conference figures. Raw: redmondmag-2014-09-18-server-2003.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#redmondmag-2014-09-18-restates-microsoft-24-million-server-2003-instances-on-12-million-servers", "citation_text": "24 million Windows Server 2003 instances, half physical and half virtual, ran on 12 million physical servers worldwide in July 2014, 39% of the Windows Server installed base, Redmond Magazine reported from Microsoft data (Redmond Magazine, 2014). Source: Redmond Magazine, \"Prepare for Windows Server 2003's End of Support\" (https://redmondmag.com/articles/2014/09/18/server-2003-end-of-support.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#redmondmag-2014-09-18-restates-microsoft-24-million-server-2003-instances-on-12-million-servers." }, { "id": "digitimes-2014-11-19-restates-industry-sources-over-10-million-windows-server-2003-servers", "family": "restatements-and-aggregators", "statement": "More than 10 million Windows Server 2003 servers would need replacing or upgrading before July 2015, Digitimes reported on 19 November 2014, citing unnamed Taiwanese 'industry sources' (Digitimes, 2014).", "short_statement": null, "short_refs": null, "value": 10000000, "unit": "Windows Server 2003 servers to replace or upgrade (as stated: 'more than 10 million')", "display_value": "more than 10 million", "display_label": "", "display_hook": null, "row_label": "Digitimes, November 2014: servers (unnamed sources)", "publisher_short": null, "geography": "Worldwide (Taiwan server-maker sources)", "period": "2014-11", "population": "Windows Server 2003 servers worldwide (unnamed industry sources)", "sample_n": null, "publisher": "Digitimes", "source_title": "Microsoft ending support for Windows Server 2003 expected to drive replacement of servers, say Taiwan makers", "source_url": "https://www.digitimes.com/news/a20141119PD206.html", "source_type": "secondary", "source_access": "paywalled", "published_at": "2014-11-19", "accessed_at": "2026-10-14", "quote": "expected to drive global demand for replacing or upgrading more than 10 million Windows Server 2003 servers, according to industry sources", "locator": "Article teaser (first paragraph; the rest is behind Digitimes' paywall), Max Wang, Taipei", "derived": false, "formula": null, "headline": false, "series": "server-2003-installed-base-claims", "history": [], "notes": "Cites: 'industry sources' (Taiwanese server makers). The likely origin of the 'about 10 million machines' wording in later blogs. Only the free first paragraph was read. Raw: digitimes-2014-11-19-server-2003.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#digitimes-2014-11-19-restates-industry-sources-over-10-million-windows-server-2003-servers", "citation_text": "More than 10 million Windows Server 2003 servers would need replacing or upgrading before July 2015, Digitimes reported on 19 November 2014, citing unnamed Taiwanese 'industry sources' (Digitimes, 2014). Source: Digitimes, \"Microsoft ending support for Windows Server 2003 expected to drive replacement of servers, say Taiwan makers\" (https://www.digitimes.com/news/a20141119PD206.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#digitimes-2014-11-19-restates-industry-sources-over-10-million-windows-server-2003-servers." }, { "id": "biztech-2014-11-restates-microsoft-24-million-physical-and-virtual-server-2003-instances", "family": "restatements-and-aggregators", "statement": "24 million physical and virtual instances of Windows Server 2003 were still running worldwide, BizTech Magazine reported in November 2014, captioning the figure 'SOURCE: Microsoft, 2014' (BizTech Magazine, 2014).", "short_statement": null, "short_refs": null, "value": 24000000, "unit": "Windows Server 2003 instances (physical and virtual, as reported)", "display_value": "24 million instances", "display_label": "", "display_hook": null, "row_label": "BizTech, November 2014: instances", "publisher_short": null, "geography": "Worldwide", "period": "2014-07", "population": "Windows Server 2003 instances worldwide (Microsoft estimate)", "sample_n": null, "publisher": "BizTech Magazine (CDW)", "source_title": "Businesses Prepare as End-of-Life for Windows Server 2003 Nears", "source_url": "https://biztechmagazine.com/article/2014/11/businesses-prepare-end-life-windows-server-2003-nears", "source_type": "manufacturer", "source_access": "open", "published_at": "2014-11-01", "accessed_at": "2026-10-14", "quote": "The company estimates that organizations worldwide are still running 24 million physical and virtual instances of Windows Server 2003.", "locator": "First paragraph; pull-quote '24 million Estimated number of physical and virtual instances of Windows Server 2003 running worldwide SOURCE: Microsoft, 2014'", "derived": false, "formula": null, "headline": false, "series": "server-2003-installed-base-claims", "history": [], "notes": "Cites: Microsoft, 2014 (no link). Drops the 12 million physical servers. BizTech is CDW's (a reseller's) magazine, hence manufacturer-type. Published November 2014 (day not on the saved page; URL path /2014/11/), so published_at uses the first of the month. Kym Gilhooly. No Microsoft-owned page carrying the July 2014 count was fetched by this family (the eol-history-2003-2008 family traces the origin); every outlet below attributes it to Microsoft without a link, and the most detailed version (Redmond Magazine, 18 September 2014) says 'As of July, Microsoft reported', i.e. Microsoft's July 2014 partner-conference figures. Raw: biztech-2014-11-server-2003-nears.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#biztech-2014-11-restates-microsoft-24-million-physical-and-virtual-server-2003-instances", "citation_text": "24 million physical and virtual instances of Windows Server 2003 were still running worldwide, BizTech Magazine reported in November 2014, captioning the figure 'SOURCE: Microsoft, 2014' (BizTech Magazine, 2014). Source: BizTech Magazine (CDW), \"Businesses Prepare as End-of-Life for Windows Server 2003 Nears\" (https://biztechmagazine.com/article/2014/11/businesses-prepare-end-life-windows-server-2003-nears). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#biztech-2014-11-restates-microsoft-24-million-physical-and-virtual-server-2003-instances." }, { "id": "distributique-2015-03-20-restates-microsoft-23-8-million-server-2003-instances-on-11-9-million-servers", "family": "restatements-and-aggregators", "statement": "23.8 million Windows Server 2003 instances on 11.9 million physical servers was Microsoft's count 'a few months ago', Le Monde Informatique's channel title Distributique wrote on 20 March 2015, a more precise form of the 24 million and 12 million (Distributique, 2015).", "short_statement": null, "short_refs": null, "value": 23800000, "unit": "Windows Server 2003 instances (Microsoft estimate, as reported)", "display_value": "23.8 million instances on 11.9 million servers", "display_label": "", "display_hook": null, "row_label": "Distributique, March 2015: instances", "publisher_short": null, "geography": "Worldwide", "period": "2014-07", "population": "Windows Server 2003 instances worldwide (Microsoft estimate)", "sample_n": null, "publisher": "Distributique (Le Monde Informatique group)", "source_title": "Fin du support de Windows Server 2003, un business de 100 Md$ pour les SSII", "source_url": "https://www.distributique.com/actualites/lire-la-fin-de-windows-server-2003-representerait-une-manne-de-100-md$-pour-le-marche-it-23010.html", "source_type": "secondary", "source_access": "open", "published_at": "2015-03-20", "accessed_at": "2026-10-14", "quote": "Il y a encore quelques mois, Microsoft évaluait à 23,8 millions le nombre d'instances de Windows Server 2003 (WS 2003) en fonctionnement dans le monde sur 11,9 millions de serveurs physiques.", "locator": "Second paragraph (Fabrice Alessi)", "derived": false, "formula": null, "headline": false, "series": "server-2003-installed-base-claims", "history": [], "notes": "Cites: Microsoft (no link, no date beyond 'a few months ago'). The decimal precision (23.8 / 11.9) does not appear in the English-language 2014 reports, which round to 24 and 12, so it may come from Microsoft's own partner slide. Same article: Spiceworks' $60,000 average migration budget and a '100 Md$' market (Spiceworks, reused ids in eol-history-2003-2008). Raw: lemondeinformatique-2015-server-2003.html (saved from distributique.com).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#distributique-2015-03-20-restates-microsoft-23-8-million-server-2003-instances-on-11-9-million-servers", "citation_text": "23.8 million Windows Server 2003 instances on 11.9 million physical servers was Microsoft's count 'a few months ago', Le Monde Informatique's channel title Distributique wrote on 20 March 2015, a more precise form of the 24 million and 12 million (Distributique, 2015). Source: Distributique (Le Monde Informatique group), \"Fin du support de Windows Server 2003, un business de 100 Md$ pour les SSII\" (https://www.distributique.com/actualites/lire-la-fin-de-windows-server-2003-representerait-une-manne-de-100-md$-pour-le-marche-it-23010.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#distributique-2015-03-20-restates-microsoft-23-8-million-server-2003-instances-on-11-9-million-servers." }, { "id": "biztech-2015-04-restates-more-than-23-million-server-2003-instances-deployed", "family": "restatements-and-aggregators", "statement": "More than 23 million instances of Windows Server 2003 'have been deployed', BizTech Magazine wrote in April 2015, turning Microsoft's July 2014 count of running instances into a deployment total with no source named (BizTech Magazine, 2015).", "short_statement": null, "short_refs": null, "value": 23000000, "unit": "Windows Server 2003 instances (as stated: 'more than 23 million ... deployed')", "display_value": "more than 23 million", "display_label": "", "display_hook": null, "row_label": "BizTech, April 2015: 'deployed'", "publisher_short": null, "geography": "Worldwide", "period": "2015-04", "population": "Windows Server 2003 instances (unspecified)", "sample_n": null, "publisher": "BizTech Magazine (CDW)", "source_title": "The End of Windows Server 2003 Means It's Time to Consider the Cloud", "source_url": "https://biztechmagazine.com/article/2015/04/end-windows-server-2003-means-its-time-consider-cloud", "source_type": "manufacturer", "source_access": "open", "published_at": "2015-04-01", "accessed_at": "2026-10-14", "quote": "First, more than 23 million instances of Windows Server 2003 have been deployed to support all kinds of workloads", "locator": "Section 'The Last Days of Microsoft Windows Server 2003', first paragraph (Lenny Liebmann)", "derived": false, "formula": null, "headline": false, "series": "server-2003-installed-base-claims", "history": [], "notes": "Cites: nothing. Drift: the same magazine's November 2014 piece said 24 million instances 'still running' (Microsoft, 2014); here 'more than 23 million ... have been deployed', which reads as a cumulative total and loses the date. Published April 2015 (day not on the saved page). Raw: biztech-2015-04-server-2003-cloud.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#biztech-2015-04-restates-more-than-23-million-server-2003-instances-deployed", "citation_text": "More than 23 million instances of Windows Server 2003 'have been deployed', BizTech Magazine wrote in April 2015, turning Microsoft's July 2014 count of running instances into a deployment total with no source named (BizTech Magazine, 2015). Source: BizTech Magazine (CDW), \"The End of Windows Server 2003 Means It's Time to Consider the Cloud\" (https://biztechmagazine.com/article/2015/04/end-windows-server-2003-means-its-time-consider-cloud). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#biztech-2015-04-restates-more-than-23-million-server-2003-instances-deployed." }, { "id": "techradar-2015-03-25-restates-server-2003-estimates-2-6-to-11-million", "family": "restatements-and-aggregators", "statement": "Estimates of Windows Server 2003 users ranged 'from a modest 2.6 million to the heady 11 million', TechRadar wrote on 25 March 2015, attributing the 11 million to Camwood chief executive Ade Foxall rather than to HP (TechRadar, 2015).", "short_statement": null, "short_refs": null, "value": 11000000, "unit": "Windows Server 2003 'users' (upper estimate, as stated)", "display_value": "2.6 million to 11 million", "display_label": "", "display_hook": null, "row_label": "TechRadar, 25 March 2015: users", "publisher_short": null, "geography": "Worldwide", "period": "2015-03", "population": "Windows Server 2003 'users' (unspecified)", "sample_n": null, "publisher": "TechRadar", "source_title": "Windows Server 2003 end-of-life is the biggest security threat of 2015", "source_url": "https://www.techradar.com/news/computing/servers/windows-server-2003-end-of-life-is-the-biggest-security-threat-of-2015-1289390", "source_type": "secondary", "source_access": "open", "published_at": "2015-03-25", "accessed_at": "2026-10-14", "quote": "Estimates on the number of Windows Server 2003 users vary wildly from a modest 2.6 million to the heady 11 million figure cited by Foxall.", "locator": "Paragraph before the subheading 'Most moving to the cloud'", "derived": false, "formula": null, "headline": false, "series": "server-2003-installed-base-claims", "history": [], "notes": "Cites: Ade Foxall (Camwood, an application-migration vendor) for 11 million; the 2.6 million has no source. Drift: HP's 11 million servers becomes 11 million 'users' credited to a migration vendor. Raw: techradar-2015-server-2003.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techradar-2015-03-25-restates-server-2003-estimates-2-6-to-11-million", "citation_text": "Estimates of Windows Server 2003 users ranged 'from a modest 2.6 million to the heady 11 million', TechRadar wrote on 25 March 2015, attributing the 11 million to Camwood chief executive Ade Foxall rather than to HP (TechRadar, 2015). Source: TechRadar, \"Windows Server 2003 end-of-life is the biggest security threat of 2015\" (https://www.techradar.com/news/computing/servers/windows-server-2003-end-of-life-is-the-biggest-security-threat-of-2015-1289390). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techradar-2015-03-25-restates-server-2003-estimates-2-6-to-11-million." }, { "id": "pcworld-2015-07-11-restates-microsoft-almost-24-million-server-2003-instances-no-update", "family": "restatements-and-aggregators", "statement": "Almost 24 million instances of Windows Server 2003 were running in July 2014 by Microsoft's count, PCWorld wrote three days before the July 2015 deadline, noting Microsoft had published no newer number (PCWorld, 2015).", "short_statement": null, "short_refs": null, "value": 24000000, "unit": "Windows Server 2003 instances (Microsoft count, as reported)", "display_value": "almost 24 million", "display_label": "", "display_hook": null, "row_label": "PCWorld, July 2015: instances", "publisher_short": null, "geography": "Worldwide", "period": "2014-07", "population": "Windows Server 2003 instances worldwide (Microsoft estimate)", "sample_n": null, "publisher": "PCWorld (IDG News Service)", "source_title": "The grim reaper approaches for Windows Server 2003", "source_url": "https://www.pcworld.com/article/428516/the-grim-reaper-approaches-for-windows-server-2003.html", "source_type": "secondary", "source_access": "open", "published_at": "2015-07-11", "accessed_at": "2026-10-14", "quote": "Microsoft says there were almost 24 million instances of Windows Server 2003 running in July 2014, though it hasn't released more recent numbers as the end-of-support date has loomed.", "locator": "Second paragraph", "derived": false, "formula": null, "headline": false, "series": "server-2003-installed-base-claims", "history": [], "notes": "Cites: Microsoft (no link); Mike Schutz (Microsoft GM, cloud platform marketing) is quoted in the next paragraph but not on the count. 'Almost 24 million' agrees with Distributique's 23.8 million. PC-WELT (IDG Germany) printed the same claim on 14 July 2015 ('Im Juli 2014 hatte Microsoft noch erklärt, dass 24 Millionen Instanzen von Windows Server 2003 noch laufen. Aktuellere Zahlen hat das Unternehmen seitdem nicht mehr genannt', raw pcwelt-2015-07-14-server-2003.html). Confirms that the last Microsoft figure before the deadline is a year old. Raw: pcworld-2015-grim-reaper-server-2003.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#pcworld-2015-07-11-restates-microsoft-almost-24-million-server-2003-instances-no-update", "citation_text": "Almost 24 million instances of Windows Server 2003 were running in July 2014 by Microsoft's count, PCWorld wrote three days before the July 2015 deadline, noting Microsoft had published no newer number (PCWorld, 2015). Source: PCWorld (IDG News Service), \"The grim reaper approaches for Windows Server 2003\" (https://www.pcworld.com/article/428516/the-grim-reaper-approaches-for-windows-server-2003.html). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#pcworld-2015-07-11-restates-microsoft-almost-24-million-server-2003-instances-no-update." }, { "id": "hkcert-2015-08-31-restates-hp-approximately-11-million-server-2003-systems-may-2014", "family": "restatements-and-aggregators", "statement": "Approximately 11 million systems were still running Windows Server 2003 in May 2014, Hong Kong's computer emergency response team HKCERT wrote on 31 August 2015, citing HP via The Register a month after support ended (HKCERT, 2015).", "short_statement": null, "short_refs": null, "value": 11000000, "unit": "systems running Windows Server 2003 (HP estimate, as restated)", "display_value": "approximately 11 million", "display_label": "", "display_hook": null, "row_label": "HKCERT, August 2015: systems (citing HP)", "publisher_short": null, "geography": "Worldwide", "period": "2014-05", "population": "Systems running Windows Server 2003 worldwide (HP estimate)", "sample_n": null, "publisher": "Hong Kong Computer Emergency Response Team Coordination Centre", "source_title": "Response to Windows Server 2003 End of Support", "source_url": "https://www.hkcert.org/blog/response-to-windows-server-2003-end-of-support", "source_type": "primary", "source_access": "open", "published_at": "2015-08-31", "accessed_at": "2026-10-14", "quote": "According to HP, there was still approximately an alarming 11 million systems still running Windows Server 2003 in May 2014", "locator": "Section 'Windows Server 2003 may still be used', first paragraph; reference [2] The Channel http://www.channelregister.co.uk/2014/05/02/windows_server_2003_hp/", "derived": false, "formula": null, "headline": false, "series": "server-2003-installed-base-claims", "history": [], "notes": "Cites: The Channel (The Register), 2 May 2014, i.e. HP's Bill Veghte. A response team quoting a 15-month-old vendor estimate after the deadline, with the date kept (good practice). Raw: hkcert-server-2003-end-of-support.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#hkcert-2015-08-31-restates-hp-approximately-11-million-server-2003-systems-may-2014", "citation_text": "Approximately 11 million systems were still running Windows Server 2003 in May 2014, Hong Kong's computer emergency response team HKCERT wrote on 31 August 2015, citing HP via The Register a month after support ended (HKCERT, 2015). Source: Hong Kong Computer Emergency Response Team Coordination Centre, \"Response to Windows Server 2003 End of Support\" (https://www.hkcert.org/blog/response-to-windows-server-2003-end-of-support). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#hkcert-2015-08-31-restates-hp-approximately-11-million-server-2003-systems-may-2014." }, { "id": "enlyft-2026-10-companies-using-windows-server-2012-37487-no-method", "family": "restatements-and-aggregators", "statement": "37,487 companies use Windows Server 2012 by Enlyft's count in October 2026, nearly three times its 13,678 for Windows Server 2016 and four times its 9,195 for 2019, with no method beyond 'scanning billions of public documents' (Enlyft, 2026).", "short_statement": null, "short_refs": null, "value": 37487, "unit": "companies Enlyft lists as using Windows Server 2012", "display_value": "37,487 companies", "display_label": "", "display_hook": null, "row_label": "Enlyft: companies using Windows Server 2012", "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "Companies in Enlyft's B2B database tagged with Windows Server 2012 (cumulative evidence, up to 10 years 11 months old)", "sample_n": null, "publisher": "Enlyft", "source_title": "Companies using Windows Server 2012 and its marketshare", "source_url": "https://enlyft.com/tech/products/windows-server-2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "We have data on 37,487 companies that use Windows Server 2012.", "locator": "Opening paragraph under 'Companies using Windows Server 2012'; the 2016 and 2019 pages (enlyft.com/tech/products/microsoft-windows-server-2016, -2019) carry 13,678 and 9,195", "derived": false, "formula": null, "headline": false, "series": "technographic-company-counts", "history": [], "notes": "Stated method: 'We use the best indexing techniques combined with advanced data science ... By scanning billions of public documents' (no sample, no recency rule). The page itself explains the inversion: 'Our data for Windows Server 2012 usage goes back as far as 10 years and 11 months' against '2 years and 11 months' for 2016 and 2019, so the 2012 count accumulates mentions since 2015 and does not measure current use. Same page: 'Windows Server 2012 has a market share of about 0.5%' in Enlyft's 'Operating Systems' category; 46% of the companies in the United States. Page undated; figures as fetched 2026-10-14 (published_at = fetch date). Overlap: install-base-audits treats Enlyft / HG Insights counts as restatement records only (no method published); recorded here. Raw: enlyft-windows-server-2012.html, enlyft-windows-server-2016-b.html, enlyft-windows-server-2019-c.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#enlyft-2026-10-companies-using-windows-server-2012-37487-no-method", "citation_text": "37,487 companies use Windows Server 2012 by Enlyft's count in October 2026, nearly three times its 13,678 for Windows Server 2016 and four times its 9,195 for 2019, with no method beyond 'scanning billions of public documents' (Enlyft, 2026). Source: Enlyft, \"Companies using Windows Server 2012 and its marketshare\" (https://enlyft.com/tech/products/windows-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#enlyft-2026-10-companies-using-windows-server-2012-37487-no-method." }, { "id": "6sense-2026-10-windows-server-2012-customers-27732-up-from-9402-in-june-2025", "family": "restatements-and-aggregators", "statement": "27,732 'current customers' of Windows Server 2012 appear on 6sense's technographics page in October 2026, up from 9,402 in a June 2025 capture, so its count of a product past end of support tripled in 16 months (6sense, 2026).", "short_statement": null, "short_refs": null, "value": 27732, "unit": "companies 6sense lists as current Windows Server 2012 customers", "display_value": "27,732 (June 2025: 9,402)", "display_label": "", "display_hook": null, "row_label": "6sense: Windows Server 2012 customers", "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "Companies in 6sense's database tagged with Windows Server 2012", "sample_n": null, "publisher": "6sense", "source_title": "Windows Server 2012 - Market Share, Competitor Insights in Server And Desktop OS", "source_url": "https://www.6sense.com/tech/server-and-desktop-os/windows-server-2012-market-share", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Market Share of Windows Server 2012 Current Customer(s) 27732 Market Share (Est.) 1.49% Ranking #19", "locator": "Header panel 'Server And Desktop OS Market Share of Windows Server 2012'; earlier value from https://web.archive.org/web/20250615142304/https://www.6sense.com/tech/server-and-desktop-os/windows-server-2012-market-share ('Current Customer(s) 9402 Market Share (Est.) 1.12% Ranking #20')", "derived": true, "formula": "27,732 (live page, fetched 2026-10-14) / 9,402 (Wayback capture 2025-06-15) = 2.95x", "headline": false, "series": "technographic-company-counts", "history": [], "notes": "Stated method: '6sense uses advanced data mining and AI algorithms to track customers and competitors of Windows Server 2012 and 40,000 other technologies on the internet' (no sample, no recency rule). The 'Server And Desktop OS' category ranks Oracle Linux (14.60%), Linux (14.59%) and Apple iOS (9.76%) as Windows Server 2012's top competitors, so the 'market share' is a share of tagged domains across desktop and phone OSs too. Growth reflects 6sense's database, not adoption of a retired OS. Top geographies: United States 9,458, Brazil 1,905, United Kingdom 1,884. Overlap: install-base-audits treats Enlyft / HG Insights counts as restatement records only (no method published); recorded here. Raw: 6sense-windows-server-2012-b.html, 6sense-windows-server-2012-wb.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#6sense-2026-10-windows-server-2012-customers-27732-up-from-9402-in-june-2025", "citation_text": "27,732 'current customers' of Windows Server 2012 appear on 6sense's technographics page in October 2026, up from 9,402 in a June 2025 capture, so its count of a product past end of support tripled in 16 months (6sense, 2026). Source: 6sense, \"Windows Server 2012 - Market Share, Competitor Insights in Server And Desktop OS\" (https://www.6sense.com/tech/server-and-desktop-os/windows-server-2012-market-share). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#6sense-2026-10-windows-server-2012-customers-27732-up-from-9402-in-june-2025." }, { "id": "6sense-2026-10-windows-server-2016-customers-10774-uk-746-servnet-quoted-391", "family": "restatements-and-aggregators", "statement": "10,774 companies, 746 of them in the United Kingdom, are listed as Windows Server 2016 customers on 6sense's page in October 2026, where Servnet had quoted 6sense in 2026 as 391 UK companies and a 0.50% share (6sense, 2026).", "short_statement": null, "short_refs": null, "value": 10774, "unit": "companies 6sense lists as current Windows Server 2016 customers", "display_value": "10,774 (UK 746)", "display_label": "", "display_hook": null, "row_label": "6sense: Windows Server 2016 customers", "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "Companies in 6sense's database tagged with Windows Server 2016", "sample_n": null, "publisher": "6sense", "source_title": "Windows Server 2016 - Market Share, Competitor Insights in Server And Desktop OS", "source_url": "https://www.6sense.com/tech/server-and-desktop-os/windows-server-2016-market-share", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Market Share of Windows Server 2016 Current Customer(s) 10774 Market Share (Est.) 0.58% Ranking #28", "locator": "Header panel; 'Customers by Geography': 'the United States with 3870(49.41%), United Kingdom with 746(9.53%), France with 636(8.12%)'", "derived": false, "formula": null, "headline": false, "series": "technographic-company-counts", "history": [], "notes": "Restatement trail: ServNet UK (16 July 2026, servnetuk.com/research/windows-server-2016-eol-countdown-2027) writes 'Data from 6sense identifies 391 UK companies still using Windows Server 2016 in 2026' and '6sense also puts Windows Server 2016's share of the broader server-and-desktop OS market at just 0.50% in 2026'; by October 2026 the same page says 746 UK companies and 0.58%, so the vendor's count nearly doubled in about three months while ServNet presents 391 as 'a concrete, named installed base rather than a rounded estimate'. Method statement as for 2012 ('advanced data mining and AI algorithms'). Overlap: install-base-audits treats Enlyft / HG Insights counts as restatement records only (no method published); recorded here. Raw: 6sense-windows-server-2016-b.html, servnetuk-windows-server-2016-eol-countdown-2027.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#6sense-2026-10-windows-server-2016-customers-10774-uk-746-servnet-quoted-391", "citation_text": "10,774 companies, 746 of them in the United Kingdom, are listed as Windows Server 2016 customers on 6sense's page in October 2026, where Servnet had quoted 6sense in 2026 as 391 UK companies and a 0.50% share (6sense, 2026). Source: 6sense, \"Windows Server 2016 - Market Share, Competitor Insights in Server And Desktop OS\" (https://www.6sense.com/tech/server-and-desktop-os/windows-server-2016-market-share). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#6sense-2026-10-windows-server-2016-customers-10774-uk-746-servnet-quoted-391." }, { "id": "theirstack-2026-10-companies-using-windows-server-2012-9178-from-job-postings", "family": "restatements-and-aggregators", "statement": "9,178 companies use Windows Server 2012 by TheirStack's count in October 2026, a figure it derives from job postings, a quarter of Enlyft's 37,487 and a third of 6sense's 27,732 for the same version (TheirStack, 2026).", "short_statement": null, "short_refs": null, "value": 9178, "unit": "companies whose job postings mention Windows Server 2012 (TheirStack)", "display_value": "9,178 companies", "display_label": "", "display_hook": null, "row_label": "TheirStack: companies using Windows Server 2012 (from job postings)", "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "Companies with job postings mentioning Windows Server 2012 (TheirStack's job-posting dataset)", "sample_n": null, "publisher": "TheirStack", "source_title": "Companies that use Windows Server 2012 (9,178)", "source_url": "https://theirstack.com/en/technology/windows-server-2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Our data is sourced from job postings collected from millions of companies. We monitor these postings on company websites, job boards, and other recruitment platforms.", "locator": "FAQ 'What is the source of this data?' (schema.org FAQ answer); count in the page title and 'We have data on 9,178 companies and users that use Windows Server 2012'", "derived": false, "formula": null, "headline": false, "series": "technographic-company-counts", "history": [], "notes": "The only technographic vendor found that states its method (job-posting mentions, refreshed daily). Three vendors give 9,178 (TheirStack), 27,732 (6sense) and 37,487 (Enlyft) companies for Windows Server 2012 on the same day: the spread is the finding. Datanyze's archived page (https://web.archive.org/web/20250215235715/https://www.datanyze.com/market-share/web-and-application-servers--425/windows-server-2012-market-share) gave 'more than 7430 companies' and a 0.09% share in 'Web and Application Servers' (website detection). HG Insights' product page could not be fetched (bot wall; raw hgdata-windows-server-2012.html is a stub). Overlap: install-base-audits treats Enlyft / HG Insights counts as restatement records only (no method published); recorded here. Raw: theirstack-windows-server-2012.html, datanyze-windows-server-2012-wb.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#theirstack-2026-10-companies-using-windows-server-2012-9178-from-job-postings", "citation_text": "9,178 companies use Windows Server 2012 by TheirStack's count in October 2026, a figure it derives from job postings, a quarter of Enlyft's 37,487 and a third of 6sense's 27,732 for the same version (TheirStack, 2026). Source: TheirStack, \"Companies that use Windows Server 2012 (9,178)\" (https://theirstack.com/en/technology/windows-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#theirstack-2026-10-companies-using-windows-server-2012-9178-from-job-postings." }, { "id": "stackwatch-2026-10-windows-server-2012-1515-vulnerabilities-in-2026", "family": "restatements-and-aggregators", "statement": "1,515 vulnerabilities were listed for Windows Server 2012 in 2026 by 14 October on stack.watch, against 467 in all of 2025, close to the 1,608 CVEs counted from Microsoft's own monthly security documents (stack.watch, 2026).", "short_statement": null, "short_refs": null, "value": 1515, "unit": "vulnerabilities listed for Windows Server 2012 in 2026 (stack.watch)", "display_value": "1,515 (2025: 467)", "display_label": "", "display_hook": null, "row_label": "stack.watch: Windows Server 2012, 2026 to 14 October", "publisher_short": null, "geography": "Worldwide", "period": "2026-01 to 2026-10", "population": "CVEs that stack.watch maps to Microsoft Windows Server 2012", "sample_n": null, "publisher": "stack.watch", "source_title": "Microsoft Windows Server 2012 Security Vulnerabilities in 2026", "source_url": "https://stack.watch/product/microsoft/windows-server-2012/", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "In 2026 there have been 1515 vulnerabilities in Microsoft Windows Server 2012 with an average score of 7.3 out of ten.", "locator": "Section 'By the Year', first sentence and table (2026 1515 7.33; 2025 467 7.31; 2024 413; 2023 453; 2022 414)", "derived": false, "formula": null, "headline": false, "series": "cve-aggregator-counts", "history": [], "notes": "Dated as fetched 2026-10-14 (the page updates continuously; 'It may take a day or so for new ... vulnerabilities to show up'). Against the catalogue: within 6% of the MSRC-derived 1,608 for 2026 and 6% above the 441 for 2025; 2023 (453) against MSRC 441 for 2012 and 450 for 2012 R2. stack.watch has no 2012 R2 split on this page. Catalogue comparison (exposure-security family, raw/exposure-security/count_msrc_cvrf_output.txt, run 2026-10-14, MSRC CVRF monthly documents, distinct CVE ids whose affected products include the version): Windows Server 2012 = 441 in 2025 and 1,608 in January to October 2026; 2012 R2 = 466 and 1,693; 2016 = 587 and 2,076. KEV entries whose MSRC advisory lists 2012 R2: 132 (2021-2026 additions); listing 2016: 150. CVE-aggregator counts are restatements of NVD/CPE data, not sources.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#stackwatch-2026-10-windows-server-2012-1515-vulnerabilities-in-2026", "citation_text": "1,515 vulnerabilities were listed for Windows Server 2012 in 2026 by 14 October on stack.watch, against 467 in all of 2025, close to the 1,608 CVEs counted from Microsoft's own monthly security documents (stack.watch, 2026). Source: stack.watch, \"Microsoft Windows Server 2012 Security Vulnerabilities in 2026\" (https://stack.watch/product/microsoft/windows-server-2012/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#stackwatch-2026-10-windows-server-2012-1515-vulnerabilities-in-2026." }, { "id": "stackwatch-2026-10-windows-server-2016-1977-vulnerabilities-in-2026", "family": "restatements-and-aggregators", "statement": "1,977 vulnerabilities were listed for Windows Server 2016 in 2026 by 14 October on stack.watch, against 601 in all of 2025, three months before its 12 January 2027 end of extended support (stack.watch, 2026).", "short_statement": null, "short_refs": null, "value": 1977, "unit": "vulnerabilities listed for Windows Server 2016 in 2026 (stack.watch)", "display_value": "1,977 (2025: 601)", "display_label": "", "display_hook": null, "row_label": "stack.watch: Windows Server 2016, 2026 to 14 October", "publisher_short": null, "geography": "Worldwide", "period": "2026-01 to 2026-10", "population": "CVEs that stack.watch maps to Microsoft Windows Server 2016", "sample_n": null, "publisher": "stack.watch", "source_title": "Microsoft Windows Server 2016 Security Vulnerabilities in 2026", "source_url": "https://stack.watch/product/microsoft/windows-server-2016/", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "In 2026 there have been 1977 vulnerabilities in Microsoft Windows Server 2016 with an average score of 7.3 out of ten.", "locator": "Section 'By the Year', first sentence and table (2026 1977 7.30; 2025 601 7.21; 2024 494; 2023 505; 2022 515)", "derived": false, "formula": null, "headline": false, "series": "cve-aggregator-counts", "history": [], "notes": "Against the catalogue: MSRC-derived 2,076 for 2026 (stack.watch 5% lower) and 587 for 2025 (2% higher). Catalogue comparison (exposure-security family, raw/exposure-security/count_msrc_cvrf_output.txt, run 2026-10-14, MSRC CVRF monthly documents, distinct CVE ids whose affected products include the version): Windows Server 2012 = 441 in 2025 and 1,608 in January to October 2026; 2012 R2 = 466 and 1,693; 2016 = 587 and 2,076. KEV entries whose MSRC advisory lists 2012 R2: 132 (2021-2026 additions); listing 2016: 150. CVE-aggregator counts are restatements of NVD/CPE data, not sources.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#stackwatch-2026-10-windows-server-2016-1977-vulnerabilities-in-2026", "citation_text": "1,977 vulnerabilities were listed for Windows Server 2016 in 2026 by 14 October on stack.watch, against 601 in all of 2025, three months before its 12 January 2027 end of extended support (stack.watch, 2026). Source: stack.watch, \"Microsoft Windows Server 2016 Security Vulnerabilities in 2026\" (https://stack.watch/product/microsoft/windows-server-2016/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#stackwatch-2026-10-windows-server-2016-1977-vulnerabilities-in-2026." }, { "id": "cvefeed-2026-10-windows-server-2012-5714-cves-211-cisa-exploited", "family": "restatements-and-aggregators", "statement": "5,714 CVEs and 211 'CISA actively exploited' entries are counted for Windows Server 2012 on cvefeed.io in October 2026, while CISA's catalogue names Windows Server in only 3 entry titles and lists most Windows flaws under the product 'Windows' (cvefeed.io, 2026).", "short_statement": null, "short_refs": null, "value": 5714, "unit": "CVEs mapped to Windows Server 2012 (all years, cvefeed.io)", "display_value": "5,714 CVEs; 211 in CISA KEV", "display_label": "", "display_hook": null, "row_label": "cvefeed.io: Windows Server 2012, all time", "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "CVEs that cvefeed.io maps to the product 'Windows Server 2012'", "sample_n": null, "publisher": "cvefeed.io", "source_title": "Microsoft > Windows server 2012 Vulnerability Maturity Index CVE", "source_url": "https://cvefeed.io/vuln/product/48/microsoftwindows_server_2012/", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Number of CVE:| 5714| Average Exploit Prediction Score :| 12.63| Public Exploit/PoC Code :| 4814| CISA Actively Exploited :| 211| Last Vulnerability Seen :| Oct. 13, 2026", "locator": "Panel 'Product Intelligence' (the product links to Microsoft's 2012 R2 lifecycle page)", "derived": false, "formula": null, "headline": false, "series": "cve-aggregator-counts", "history": [], "notes": "Also claims 'Public Exploit/PoC Code: 4814' (84% of 5,714), implausibly high. KEV comparison: catalogue 2026.10.13 has 1,741 entries, 390 Microsoft, 178 with product 'Windows', 3 with 'Windows Server' in product or name (exposure-security count_kev_output.txt); 132 KEV entries have an MSRC advisory listing 2012 R2 (MSRC documents from 2019 only, so older KEV CVEs are missed). OpenCVE's KEV filter gives 209 for the same product. Catalogue comparison (exposure-security family, raw/exposure-security/count_msrc_cvrf_output.txt, run 2026-10-14, MSRC CVRF monthly documents, distinct CVE ids whose affected products include the version): Windows Server 2012 = 441 in 2025 and 1,608 in January to October 2026; 2012 R2 = 466 and 1,693; 2016 = 587 and 2,076. KEV entries whose MSRC advisory lists 2012 R2: 132 (2021-2026 additions); listing 2016: 150. CVE-aggregator counts are restatements of NVD/CPE data, not sources.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cvefeed-2026-10-windows-server-2012-5714-cves-211-cisa-exploited", "citation_text": "5,714 CVEs and 211 'CISA actively exploited' entries are counted for Windows Server 2012 on cvefeed.io in October 2026, while CISA's catalogue names Windows Server in only 3 entry titles and lists most Windows flaws under the product 'Windows' (cvefeed.io, 2026). Source: cvefeed.io, \"Microsoft > Windows server 2012 Vulnerability Maturity Index CVE\" (https://cvefeed.io/vuln/product/48/microsoftwindows_server_2012/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cvefeed-2026-10-windows-server-2012-5714-cves-211-cisa-exploited." }, { "id": "opencve-2026-10-14-windows-server-2012-5705-cves-209-in-kev", "family": "restatements-and-aggregators", "statement": "5,705 CVEs are tagged with the product Windows Server 2012 in OpenCVE on 14 October 2026, 209 of them flagged as in CISA's Known Exploited Vulnerabilities catalogue (OpenCVE, 2026).", "short_statement": null, "short_refs": null, "value": 5705, "unit": "CVEs tagged product windows_server_2012 (all years, OpenCVE)", "display_value": "5,705 CVEs; 209 in KEV", "display_label": "", "display_hook": null, "row_label": "OpenCVE: Windows Server 2012, all time", "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "CVEs whose CPE configuration includes microsoft:windows_server_2012 (OpenCVE)", "sample_n": null, "publisher": "OpenCVE", "source_title": "Windows Server 2012 CVEs and Security Vulnerabilities - OpenCVE", "source_url": "https://app.opencve.io/cve/?product=windows_server_2012&vendor=microsoft", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Search Results (5705 CVEs found)", "locator": "Results header for vendor=microsoft, product=windows_server_2012; KEV query 'product:windows_server_2012 AND kev:true' returned 'Search Results (209 CVEs found)'", "derived": true, "formula": "OpenCVE web search 2026-10-14: (a) vendor=microsoft&product=windows_server_2012 -> 5,705; (b) q=product:windows_server_2012 AND kev:true -> 209", "headline": false, "series": "cve-aggregator-counts", "history": [], "notes": "All-years counts (since 2012), including CVEs whose CPE lists the OS only as a platform (the first KEV hit is CVE-2026-96951, tagged Outlook.com and 14 Windows products). Close to cvefeed's 5,714 and 211, as both use NVD CPE data. Raw: opencve-windows-server-2012.html, opencve-windows-server-2012-kev.html. Catalogue comparison (exposure-security family, raw/exposure-security/count_msrc_cvrf_output.txt, run 2026-10-14, MSRC CVRF monthly documents, distinct CVE ids whose affected products include the version): Windows Server 2012 = 441 in 2025 and 1,608 in January to October 2026; 2012 R2 = 466 and 1,693; 2016 = 587 and 2,076. KEV entries whose MSRC advisory lists 2012 R2: 132 (2021-2026 additions); listing 2016: 150. CVE-aggregator counts are restatements of NVD/CPE data, not sources.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#opencve-2026-10-14-windows-server-2012-5705-cves-209-in-kev", "citation_text": "5,705 CVEs are tagged with the product Windows Server 2012 in OpenCVE on 14 October 2026, 209 of them flagged as in CISA's Known Exploited Vulnerabilities catalogue (OpenCVE, 2026). Source: OpenCVE, \"Windows Server 2012 CVEs and Security Vulnerabilities - OpenCVE\" (https://app.opencve.io/cve/?product=windows_server_2012&vendor=microsoft). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#opencve-2026-10-14-windows-server-2012-5705-cves-209-in-kev." }, { "id": "opencve-2026-10-14-windows-server-2016-7018-cves-188-in-kev", "family": "restatements-and-aggregators", "statement": "7,018 CVEs are tagged with the product Windows Server 2016 in OpenCVE on 14 October 2026, 188 of them flagged as in CISA's Known Exploited Vulnerabilities catalogue, fewer KEV entries than Server 2012's 209 despite more CVEs (OpenCVE, 2026).", "short_statement": null, "short_refs": null, "value": 7018, "unit": "CVEs tagged product windows_server_2016 (all years, OpenCVE)", "display_value": "7,018 CVEs; 188 in KEV", "display_label": "", "display_hook": null, "row_label": "OpenCVE: Windows Server 2016, all time", "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "CVEs whose CPE configuration includes microsoft:windows_server_2016 (OpenCVE)", "sample_n": null, "publisher": "OpenCVE", "source_title": "Windows Server 2016 CVEs and Security Vulnerabilities - OpenCVE", "source_url": "https://app.opencve.io/cve/?vendor=microsoft&product=windows_server_2016", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Search Results (7018 CVEs found)", "locator": "Results header for q 'vendor:microsoft AND product:windows_server_2016'; KEV query 'product:windows_server_2016 AND kev:true' returned 'Search Results (188 CVEs found)'", "derived": true, "formula": "OpenCVE web search 2026-10-14: (a) vendor=microsoft&product=windows_server_2016 -> 7,018; (b) q=product:windows_server_2016 AND kev:true -> 188", "headline": false, "series": "cve-aggregator-counts", "history": [], "notes": "Fewer KEV hits for 2016 than 2012 reflects older exploited CVEs (2012-2016) that predate Windows Server 2016. By MSRC advisories the order reverses (KEV entries listing 2016: 150; 2012 R2: 132), so aggregator KEV counts depend on CPE tagging. Raw: opencve-windows-server-2016.html, opencve-windows-server-2016-kev.html. Catalogue comparison (exposure-security family, raw/exposure-security/count_msrc_cvrf_output.txt, run 2026-10-14, MSRC CVRF monthly documents, distinct CVE ids whose affected products include the version): Windows Server 2012 = 441 in 2025 and 1,608 in January to October 2026; 2012 R2 = 466 and 1,693; 2016 = 587 and 2,076. KEV entries whose MSRC advisory lists 2012 R2: 132 (2021-2026 additions); listing 2016: 150. CVE-aggregator counts are restatements of NVD/CPE data, not sources.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#opencve-2026-10-14-windows-server-2016-7018-cves-188-in-kev", "citation_text": "7,018 CVEs are tagged with the product Windows Server 2016 in OpenCVE on 14 October 2026, 188 of them flagged as in CISA's Known Exploited Vulnerabilities catalogue, fewer KEV entries than Server 2012's 209 despite more CVEs (OpenCVE, 2026). Source: OpenCVE, \"Windows Server 2016 CVEs and Security Vulnerabilities - OpenCVE\" (https://app.opencve.io/cve/?vendor=microsoft&product=windows_server_2016). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#opencve-2026-10-14-windows-server-2016-7018-cves-188-in-kev." }, { "id": "cvedetails-2025-03-windows-server-2012-3315-vulnerabilities-archived", "family": "restatements-and-aggregators", "statement": "3,315 vulnerabilities were listed for Windows Server 2012 on CVEdetails in a March 2025 capture, about 2,400 fewer than OpenCVE and cvefeed list for the same product in October 2026 (CVEdetails, 2025).", "short_statement": null, "short_refs": null, "value": 3315, "unit": "vulnerabilities listed for Windows Server 2012 (CVEdetails, all years)", "display_value": "3,315", "display_label": "", "display_hook": null, "row_label": "CVEdetails: Windows Server 2012, March 2025 capture", "publisher_short": null, "geography": "Worldwide", "period": "2025-03", "population": "CVEs that CVEdetails maps to Microsoft Windows Server 2012", "sample_n": null, "publisher": "CVEdetails (SecurityScorecard)", "source_title": "Microsoft Windows Server 2012 security vulnerabilities, CVEs, versions and CVE reports", "source_url": "https://www.cvedetails.com/product/23546/Microsoft-Windows-Server-2012.html?vendor_id=26", "source_type": "secondary", "source_access": "open", "published_at": "2025-03-25", "accessed_at": "2026-10-14", "quote": "Windows Server 2012 (Operating system) : Product details, threats and statistics| Versions | Vulnerabilities ( 3315 )", "locator": "Product header; Wayback capture https://web.archive.org/web/20250325131957/https://www.cvedetails.com/product/23546/Microsoft-Windows-Server-2012.html?vendor_id=26 (live page behind a Cloudflare challenge on 2026-10-14)", "derived": false, "formula": null, "headline": false, "series": "cve-aggregator-counts", "history": [], "notes": "Live CVEdetails pages for 2012 and 2016 returned a bot challenge (raw cvedetails-windows-server-2012.html and -2016.html are stubs), so the latest readable value is the March 2025 capture. Its by-year impact table sums differently from the header (e.g. 2023: 169 code execution, 122 privilege escalation). Differences between aggregators come from CPE mapping (2012 vs 2012 R2, platform-only tags) and dates. Catalogue comparison (exposure-security family, raw/exposure-security/count_msrc_cvrf_output.txt, run 2026-10-14, MSRC CVRF monthly documents, distinct CVE ids whose affected products include the version): Windows Server 2012 = 441 in 2025 and 1,608 in January to October 2026; 2012 R2 = 466 and 1,693; 2016 = 587 and 2,076. KEV entries whose MSRC advisory lists 2012 R2: 132 (2021-2026 additions); listing 2016: 150. CVE-aggregator counts are restatements of NVD/CPE data, not sources.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#cvedetails-2025-03-windows-server-2012-3315-vulnerabilities-archived", "citation_text": "3,315 vulnerabilities were listed for Windows Server 2012 on CVEdetails in a March 2025 capture, about 2,400 fewer than OpenCVE and cvefeed list for the same product in October 2026 (CVEdetails, 2025). Source: CVEdetails (SecurityScorecard), \"Microsoft Windows Server 2012 security vulnerabilities, CVEs, versions and CVE reports\" (https://www.cvedetails.com/product/23546/Microsoft-Windows-Server-2012.html?vendor_id=26). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#cvedetails-2025-03-windows-server-2012-3315-vulnerabilities-archived." }, { "id": "endoflife-ai-2026-10-restates-windows-server-in-cisa-kev-1-time", "family": "restatements-and-aggregators", "statement": "Windows Server is named in CISA's Known Exploited Vulnerabilities catalogue '1 time', endoflife.ai said in October 2026, while a search of the 13 October 2026 catalogue finds 3 entries with 'Windows Server' in the name and 178 Microsoft entries filed under the product 'Windows' (endoflife.ai, 2026).", "short_statement": null, "short_refs": null, "value": 1, "unit": "CISA KEV entries naming Windows Server (as stated by endoflife.ai)", "display_value": "1 (catalogue: 3 by name, 178 'Windows')", "display_label": "", "display_hook": null, "row_label": "endoflife.ai: times Windows Server appears in CISA's catalogue", "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "CISA KEV catalogue entries (endoflife.ai's product match)", "sample_n": null, "publisher": "endoflife.ai", "source_title": "Windows Server EOL Dates — 2016 to 2025 | endoflife.ai", "source_url": "https://endoflife.ai/windows-server", "source_type": "secondary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "CISA KEV history: Windows Server is named in CISA's Known Exploited Vulnerabilities catalog 1 time, most recently on 2021-11-03, including use in ransomware campaigns.", "locator": "Section 'Windows Server security intelligence'; also the 'EOL Risk Score' panel ('CISA KEV Exposure 20/20 Named in CISA KEV')", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Against the catalogue (exposure-security family, raw/exposure-security/count_kev_output.txt, catalogVersion 2026.10.13, 1,741 entries): 'Windows Server' appears in the product or vulnerabilityName of 3 entries (CVE-2017-0143 and CVE-2017-7269, added 2021-11-03; CVE-2025-59287 WSUS, added 2025-10-24), so endoflife.ai's 'most recently on 2021-11-03' misses the October 2025 WSUS entry; 178 Microsoft entries have product 'Windows', and 132 KEV entries have an MSRC advisory listing Windows Server 2012 R2. A literal product-name match understates exposure by two orders of magnitude. Catalogue comparison (exposure-security family, raw/exposure-security/count_msrc_cvrf_output.txt, run 2026-10-14, MSRC CVRF monthly documents, distinct CVE ids whose affected products include the version): Windows Server 2012 = 441 in 2025 and 1,608 in January to October 2026; 2012 R2 = 466 and 1,693; 2016 = 587 and 2,076. KEV entries whose MSRC advisory lists 2012 R2: 132 (2021-2026 additions); listing 2016: 150. CVE-aggregator counts are restatements of NVD/CPE data, not sources.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#endoflife-ai-2026-10-restates-windows-server-in-cisa-kev-1-time", "citation_text": "Windows Server is named in CISA's Known Exploited Vulnerabilities catalogue '1 time', endoflife.ai said in October 2026, while a search of the 13 October 2026 catalogue finds 3 entries with 'Windows Server' in the name and 178 Microsoft entries filed under the product 'Windows' (endoflife.ai, 2026). Source: endoflife.ai, \"Windows Server EOL Dates — 2016 to 2025 | endoflife.ai\" (https://endoflife.ai/windows-server). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#endoflife-ai-2026-10-restates-windows-server-in-cisa-kev-1-time." }, { "id": "morphisec-2024-10-21-restates-over-1000-cves-for-windows-server-2012-unsourced", "family": "restatements-and-aggregators", "statement": "Windows Server 2012 and 2012 R2 had 'accumulated over 1,000 CVEs' by their October 2023 end of support, Morphisec wrote in October 2024 without a source, an undercount against CVE aggregators listing over 3,000 (Morphisec, 2024).", "short_statement": null, "short_refs": null, "value": 1000, "unit": "CVEs accumulated by Windows Server 2012/2012 R2 at end of support (as stated: 'over 1,000')", "display_value": "over 1,000", "display_label": "", "display_hook": null, "row_label": "Morphisec: Windows Server 2012 CVEs by end of support (unsourced)", "publisher_short": null, "geography": "Worldwide", "period": "2023-10", "population": "CVEs affecting Windows Server 2012 and 2012 R2 (unspecified count method)", "sample_n": null, "publisher": "Morphisec", "source_title": "Windows Server 2012 End of Life", "source_url": "https://www.morphisec.com/blog/how-do-you-secure-windows-server-2012-and-other-windows-legacy-servers/", "source_type": "manufacturer", "source_access": "open", "published_at": "2024-10-21", "accessed_at": "2026-10-14", "quote": "As of their end-of-life in October 2023, Windows Server 2012 and 2012 R2 had accumulated over 1,000 CVEs.", "locator": "Section 'The Legacy Server Landscape', bullet 'Windows Server 2012 and 2012 R2'", "derived": false, "formula": null, "headline": false, "series": "cve-aggregator-counts", "history": [], "notes": "Unverified as a figure: the quote is verbatim from the page (fetched, raw morphisec-windows-server-2012-eol.html) but no source or count method is given and nothing is linked. 'Over 1,000' is true but far below aggregator totals (CVEdetails 3,315 by March 2025) and below MSRC-derived per-year counts (about 440 a year for 2012 in 2023), so it reads as a guess. Endpoint-security vendor blog.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#morphisec-2024-10-21-restates-over-1000-cves-for-windows-server-2012-unsourced", "citation_text": "Windows Server 2012 and 2012 R2 had 'accumulated over 1,000 CVEs' by their October 2023 end of support, Morphisec wrote in October 2024 without a source, an undercount against CVE aggregators listing over 3,000 (Morphisec, 2024). Source: Morphisec, \"Windows Server 2012 End of Life\" (https://www.morphisec.com/blog/how-do-you-secure-windows-server-2012-and-other-windows-legacy-servers/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#morphisec-2024-10-21-restates-over-1000-cves-for-windows-server-2012-unsourced." }, { "id": "forbes-council-2023-09-26-restates-rapid7-59pct-without-internet-exposed", "family": "restatements-and-aggregators", "statement": "'A 2020 study by Rapid7 of unique Windows Server instances found that 59% were unsupported', a Forbes Technology Council post said in September 2023, dropping that Rapid7 counted only internet-exposed instances (Forbes Technology Council, 2023).", "short_statement": null, "short_refs": null, "value": 59, "unit": "% of Windows Server instances unsupported (as restated; original: internet-exposed instances in Project Sonar)", "display_value": "59%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2020-09", "population": "Restated as 'unique Windows Server instances' (original: uniquely observed internet-exposed instances)", "sample_n": null, "publisher": "Forbes Technology Council (Brian Contos)", "source_title": "Attackers Don't Like You Having Visibility Into Your EOL Assets", "source_url": "https://www.forbes.com/councils/forbestechcouncil/2023/09/26/attackers-dont-like-you-having-visibility-into-your-end-of-life-assets/", "source_type": "manufacturer", "source_access": "open", "published_at": "2023-09-26", "accessed_at": "2026-10-14", "quote": "A 2020 study by Rapid7 of unique Windows Server instances found that 59% were unsupported.", "locator": "Paragraph after the Windows Server 2008/2008 R2 end-of-support paragraph; '59% were unsupported' links to rapid7.com/blog/post/2020/10/19/are-you-still-running-end-of-life-windows-servers/", "derived": false, "formula": null, "headline": false, "series": "rapid7-2020-restatements", "history": [], "notes": "Cites: Rapid7's 19 October 2020 blog (linked). Original (reusable id rapid7-2020-10-19-unsupported-windows-server-internet-exposed-59pct, owned by eol-history-2003-2008): '59% of all uniquely observed instances of Windows Server were unsupported' in Project Sonar's September 2020 internet-wide scans. Drift: 'internet-exposed' disappears, so a share of servers reachable from the internet reads as a share of all Windows Servers; the date (September 2020) survives. Forbes Council posts are paid-membership contributions by vendor executives (author: Brian Contos, then at Sevco Security), hence manufacturer. The only third-party restatement of the 59% found in three searches.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#forbes-council-2023-09-26-restates-rapid7-59pct-without-internet-exposed", "citation_text": "'A 2020 study by Rapid7 of unique Windows Server instances found that 59% were unsupported', a Forbes Technology Council post said in September 2023, dropping that Rapid7 counted only internet-exposed instances (Forbes Technology Council, 2023). Source: Forbes Technology Council (Brian Contos), \"Attackers Don't Like You Having Visibility Into Your EOL Assets\" (https://www.forbes.com/councils/forbestechcouncil/2023/09/26/attackers-dont-like-you-having-visibility-into-your-end-of-life-assets/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#forbes-council-2023-09-26-restates-rapid7-59pct-without-internet-exposed." }, { "id": "rcpmag-2024-04-04-restates-connectwise-14pct-of-windows-server-alerts-as-smbs-running-2012", "family": "restatements-and-aggregators", "statement": "Windows Server 2012 accounted for about 14% of all Windows Server alerts in ConnectWise's SIEM data, Redmond Channel Partner wrote in April 2024, framing it as SMBs 'still running Windows Server 2012' (Redmond Channel Partner, 2024).", "short_statement": null, "short_refs": null, "value": 14, "unit": "% of Windows Server alerts in ConnectWise's SIEM (as restated)", "display_value": "about 14%", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2023", "population": "Windows Server alerts (or log sources) in ConnectWise's SIEM at MSP-managed SMB customers", "sample_n": null, "publisher": "Redmond Channel Partner", "source_title": "Top SMB Threats Include Ransomware and Windows Server 2012: Report", "source_url": "https://rcpmag.com/articles/2024/04/04/top-smb-threats-for-msps.aspx", "source_type": "secondary", "source_access": "open", "published_at": "2024-04-04", "accessed_at": "2026-10-14", "quote": "According to data collected by ConnectWise through its security information and event management (SIEM) platform, Windows Server 2012 still accounted for about 14 percent of all Windows Server alerts", "locator": "Section on Windows Server 2012 (Gladys Rama), sentence after 'a not-insignificant proportion of SMBs are still running Windows Server 2012'", "derived": false, "formula": null, "headline": false, "series": "connectwise-2024-restatements", "history": [], "notes": "Cites: ConnectWise 2024 MSP Threat Report (registration-gated; the press release at connectwise.com does not carry the 14%). Channel Futures (5 April 2024) describes the same figure differently: 'Windows Server 2012 makes up about 14% of Windows log data sources for ConnectWise's security information and event management (SIEM) among customers using Windows operating systems' (separate record). Alerts and log sources are different measures; neither is a share of SMBs or of servers, which is how RCP's lead-in reads it. Raw: rcpmag-2024-04-04-connectwise.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcpmag-2024-04-04-restates-connectwise-14pct-of-windows-server-alerts-as-smbs-running-2012", "citation_text": "Windows Server 2012 accounted for about 14% of all Windows Server alerts in ConnectWise's SIEM data, Redmond Channel Partner wrote in April 2024, framing it as SMBs 'still running Windows Server 2012' (Redmond Channel Partner, 2024). Source: Redmond Channel Partner, \"Top SMB Threats Include Ransomware and Windows Server 2012: Report\" (https://rcpmag.com/articles/2024/04/04/top-smb-threats-for-msps.aspx). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#rcpmag-2024-04-04-restates-connectwise-14pct-of-windows-server-alerts-as-smbs-running-2012." }, { "id": "wps-2026-06-01-restates-spiceworks-68pct-enterprises-prioritise-azure-over-esu-untraced", "family": "restatements-and-aggregators", "statement": "'A Spiceworks survey found that 68% of enterprises plan to prioritize Azure migration' over paying for Windows Server 2016 ESU, WPS Office's blog said in June 2026, naming no survey, date or link (WPS Office, 2026).", "short_statement": null, "short_refs": null, "value": 68, "unit": "% of enterprises planning to prioritise Azure migration over ESU (as stated, untraced)", "display_value": "68% (untraced)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-06", "population": "'enterprises' (survey not identified)", "sample_n": null, "publisher": "WPS Office (Kingsoft)", "source_title": "Windows Server 2016 End of Life: Critical Dates, Risks, and How to Secure Your System", "source_url": "https://www.wps.com/blog/windows-server-2016-end-of-life-critical-dates-risks-and-how-to-secure-your-system/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-06-01", "accessed_at": "2026-10-14", "quote": "A Spiceworks survey found that 68% of enterprises plan to prioritize Azure migration over continuing to pay for escalating ESU fees.", "locator": "Section 'Windows 2016 End of Life: Unveiling Post-EOL Security Risks, Compliance Fallout, and Community Insights', 'Credible Leaks & Community Insights' paragraph (Algirdas Jasaitis, posted 2026-06-01)", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Unverified: the sentence is verbatim on the page, but no Spiceworks publication with this figure was found (web searches 2026-10-14 for 'Spiceworks 68% Azure ESU' returned only this page). The same paragraph sources 'ESU costs are rising by 25% annually' to 'Conversations on Reddit's r/sysadmin community'. The page also gives Windows Server 2016's extended support end as 14 July 2026 (separate date record). Office-suite vendor blog; treat as an unsourced figure.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#wps-2026-06-01-restates-spiceworks-68pct-enterprises-prioritise-azure-over-esu-untraced", "citation_text": "'A Spiceworks survey found that 68% of enterprises plan to prioritize Azure migration' over paying for Windows Server 2016 ESU, WPS Office's blog said in June 2026, naming no survey, date or link (WPS Office, 2026). Source: WPS Office (Kingsoft), \"Windows Server 2016 End of Life: Critical Dates, Risks, and How to Secure Your System\" (https://www.wps.com/blog/windows-server-2016-end-of-life-critical-dates-risks-and-how-to-secure-your-system/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#wps-2026-06-01-restates-spiceworks-68pct-enterprises-prioritise-azure-over-esu-untraced." }, { "id": "redpiranha-restates-gartner-75pct-of-orgs-not-migrating-ws2012-will-suffer-breach-by-2026", "family": "restatements-and-aggregators", "statement": "75% of organisations that do not complete their migration from Windows Server 2012 will suffer a security breach or data loss by 2026, Red Piranha's blog attributes to Gartner, without naming or linking the Gartner note (Red Piranha, 2023).", "short_statement": null, "short_refs": null, "value": 75, "unit": "% of organisations not completing WS2012 migration predicted to suffer a breach or data loss by 2026 (attributed to Gartner)", "display_value": "75% (attributed to Gartner)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026", "population": "Organisations that do not complete migration from Windows Server 2012/2012 R2 (Gartner prediction as restated)", "sample_n": null, "publisher": "Red Piranha", "source_title": "New Year Security Resolution - Migrate from Windows Server 2012", "source_url": "https://redpiranha.net/news/new-year-security-resolution-migrate-windows-server-2012", "source_type": "manufacturer", "source_access": "open", "published_at": "2023-01-01", "accessed_at": "2026-10-14", "quote": "Gartner expects that by 2026, 75% of organizations that do not complete their migration from WS2012 or WS2012 R2 will suffer a security breach and/or data loss.", "locator": "Paragraph after the list of recommendations ('Begin executing migrations as soon as possible')", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Unverified: verbatim on the page, but the Gartner research note it paraphrases is not named, linked or dated and Gartner research is paywalled; the page's wording ('hereafter referred to as WS2012', 'I&O leaders') follows Gartner style, suggesting a close paraphrase of a Gartner 'migrate from WS2012' note. Publication date not on the saved page: 'New Year' title and 'approaches on October 10, 2023' place it in early 2023 (published_at set to 2023-01-01). A prediction, not a measurement; the 2026 horizon has now passed with no outcome data. Australian security vendor.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#redpiranha-restates-gartner-75pct-of-orgs-not-migrating-ws2012-will-suffer-breach-by-2026", "citation_text": "75% of organisations that do not complete their migration from Windows Server 2012 will suffer a security breach or data loss by 2026, Red Piranha's blog attributes to Gartner, without naming or linking the Gartner note (Red Piranha, 2023). Source: Red Piranha, \"New Year Security Resolution - Migrate from Windows Server 2012\" (https://redpiranha.net/news/new-year-security-resolution-migrate-windows-server-2012). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#redpiranha-restates-gartner-75pct-of-orgs-not-migrating-ws2012-will-suffer-breach-by-2026." }, { "id": "wps-2026-06-01-restates-windows-server-2016-extended-end-as-2026-07-14", "family": "restatements-and-aggregators", "statement": "WPS Office's June 2026 guide gives 14 July 2026 as the end of extended support for Windows Server 2016, SQL Server 2016's date, 182 days before the 12 January 2027 on Microsoft's lifecycle page (WPS Office, 2026).", "short_statement": null, "short_refs": null, "value": -182, "unit": "days off Microsoft's lifecycle date (outlet minus Microsoft)", "display_value": "14 July 2026 (Microsoft: 12 January 2027)", "display_label": "", "display_hook": null, "row_label": "WPS Office: Windows Server 2016, end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2026-07-14", "population": "Windows Server 2016 end-of-support date as printed by a software vendor's blog", "sample_n": null, "publisher": "WPS Office (Kingsoft)", "source_title": "Windows Server 2016 End of Life: Critical Dates, Risks, and How to Secure Your System", "source_url": "https://www.wps.com/blog/windows-server-2016-end-of-life-critical-dates-risks-and-how-to-secure-your-system/", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-06-01", "accessed_at": "2026-10-14", "quote": "Official EOL Timeline: Mainstream Support: Ended January 11, 2022. ... Extended Support: Ends July 14, 2026.", "locator": "Section 'Windows Server 2016 End of Life: Key Dates & Credible Sources', 'Official EOL Timeline' list", "derived": true, "formula": "WPS 2026-07-14 minus Microsoft lifecycle (PT) extended end 2027-01-12 = -182 days", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "14 July 2026 is SQL Server 2016's extended end (the next bullet: 'ESU for SQL Server 2016 also ends in July 2026'). The intro repeats it: 'extended security updates (ESU) are set to expire by July 2026'. Also wrong: 'Mainstream Support: Ended ... No more ... security patches unless enrolled in Extended Security Updates'. Mainstream date (11 January 2022) matches Microsoft.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#wps-2026-06-01-restates-windows-server-2016-extended-end-as-2026-07-14", "citation_text": "WPS Office's June 2026 guide gives 14 July 2026 as the end of extended support for Windows Server 2016, SQL Server 2016's date, 182 days before the 12 January 2027 on Microsoft's lifecycle page (WPS Office, 2026). Source: WPS Office (Kingsoft), \"Windows Server 2016 End of Life: Critical Dates, Risks, and How to Secure Your System\" (https://www.wps.com/blog/windows-server-2016-end-of-life-critical-dates-risks-and-how-to-secure-your-system/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#wps-2026-06-01-restates-windows-server-2016-extended-end-as-2026-07-14." }, { "id": "block64-2026-02-restates-windows-server-2016-extended-end-as-2027-01-11", "family": "restatements-and-aggregators", "statement": "Block64's Windows Server 2016 end-of-life guide gives 11 January 2027 as the end of extended support 'according to Microsoft's official lifecycle documentation', one day before Microsoft's 12 January 2027 (Block64, 2026).", "short_statement": null, "short_refs": null, "value": -1, "unit": "days off Microsoft's lifecycle date (outlet minus Microsoft)", "display_value": "11 January 2027 (Microsoft: 12 January 2027)", "display_label": "", "display_hook": null, "row_label": "Block64: Windows Server 2016, end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2027-01-11", "population": "Windows Server 2016 end-of-support date as printed by an IT-asset-discovery vendor's blog", "sample_n": null, "publisher": "Block64", "source_title": "Windows Server 2016 End of Life (2027): What IT Teams Need to Do Now", "source_url": "https://block64.com/blog/the-server-2016-end-of-life-countdown-are-you-prepared", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-02-06", "accessed_at": "2026-10-14", "quote": "According to Microsoft's official lifecycle documentation, the key milestones are: January 11, 2027 – Official extended support ends", "locator": "Section 'Key Dates for Windows Server 2016 EOL'; repeated in the opening paragraph and 'End of Extended Support (January 11, 2027)'", "derived": true, "formula": "Block64 2027-01-11 minus Microsoft lifecycle (PT) extended end 2027-01-12 = -1 day", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Same one-day-early error as innov8, here attributed to Microsoft; the oldest Wayback capture (2025-10-13, CDX; raw block64-wb-20251013.html) already shows it. Published 4 September 2025, last updated 6 February 2026 (page header). Quote contains an en dash from the source.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#block64-2026-02-restates-windows-server-2016-extended-end-as-2027-01-11", "citation_text": "Block64's Windows Server 2016 end-of-life guide gives 11 January 2027 as the end of extended support 'according to Microsoft's official lifecycle documentation', one day before Microsoft's 12 January 2027 (Block64, 2026). Source: Block64, \"Windows Server 2016 End of Life (2027): What IT Teams Need to Do Now\" (https://block64.com/blog/the-server-2016-end-of-life-countdown-are-you-prepared). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#block64-2026-02-restates-windows-server-2016-extended-end-as-2027-01-11." }, { "id": "bluesource-2026-10-07-restates-windows-server-2016-extended-end-as-2027-01-13", "family": "restatements-and-aggregators", "statement": "Bluesource's 7 October 2026 guide gives 13 January 2027 as the end of Microsoft Extended Support for Windows Server 2016, one day after the 12 January 2027 Microsoft's lifecycle page displays (Bluesource, 2026).", "short_statement": null, "short_refs": null, "value": 1, "unit": "days off Microsoft's lifecycle date (outlet minus Microsoft)", "display_value": "13 January 2027 (Microsoft: 12 January 2027)", "display_label": "", "display_hook": null, "row_label": "Bluesource: Windows Server 2016, end of extended support", "publisher_short": null, "geography": "Worldwide", "period": "2027-01-13", "population": "Windows Server 2016 end-of-support date as printed by a Microsoft licensing partner's blog", "sample_n": null, "publisher": "Bluesource", "source_title": "Windows Server 2016 End of Life Is Approaching: Is Your Migration Strategy Ready?", "source_url": "https://bluesource.co.uk/blog/windows-server-2016-end-of-life-is-approaching-is-your-migration-strategy-ready", "source_type": "manufacturer", "source_access": "open", "published_at": "2026-10-07", "accessed_at": "2026-10-14", "quote": "Microsoft Extended Support for Windows Server 2016 ends on 13 January 2027.", "locator": "Overview, first sentence; repeated twice in the next paragraphs ('After 13 January 2027, Microsoft will no longer provide standard security updates')", "derived": true, "formula": "Bluesource 2027-01-13 minus Microsoft lifecycle (PT) extended end 2027-01-12 = +1 day", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "13 January 2027 is the UTC date in the lifecycle page's raw HTML ('1/13/2027 6:59:59 AM', rendered in Pacific Time as 12 January), i.e. a scrape of the markup or a UK reading of the timestamp; it is also the first day of the 2016 ESU period. Jimber and Raff both warn about this one-day shift. UK Microsoft licensing and support partner.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#bluesource-2026-10-07-restates-windows-server-2016-extended-end-as-2027-01-13", "citation_text": "Bluesource's 7 October 2026 guide gives 13 January 2027 as the end of Microsoft Extended Support for Windows Server 2016, one day after the 12 January 2027 Microsoft's lifecycle page displays (Bluesource, 2026). Source: Bluesource, \"Windows Server 2016 End of Life Is Approaching: Is Your Migration Strategy Ready?\" (https://bluesource.co.uk/blog/windows-server-2016-end-of-life-is-approaching-is-your-migration-strategy-ready). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#bluesource-2026-10-07-restates-windows-server-2016-extended-end-as-2027-01-13." }, { "id": "techzine-2023-09-01-headline-restates-lansweeper-instance-shares-as-quarter-of-organizations", "family": "restatements-and-aggregators", "statement": "'Quarter of organizations must upgrade soon' was Techzine's 1 September 2023 headline for Lansweeper shares of Windows Server instances (20.94% on 2012, 6.72% already unsupported), turning a count of servers into a count of organisations (Techzine, 2023).", "short_statement": null, "short_refs": null, "value": 25, "unit": "% of organisations (as stated in the headline: 'quarter'); source measures % of Windows Server instances", "display_value": "a quarter of organisations", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide (Lansweeper customer base)", "period": "2023-09", "population": "Restated as organisations; source: 1.3 million Windows Server instances at more than 35,000 organisations", "sample_n": 1300000, "publisher": "Techzine", "source_title": "Old Windows Servers open door for intruders, quarter of organizations must upgrade soon", "source_url": "https://www.techzine.eu/news/security/110828/old-windows-servers-open-door-for-intruders-quarter-of-organizations-must-upgrade-soon/", "source_type": "secondary", "source_access": "open", "published_at": "2023-09-01", "accessed_at": "2026-10-14", "quote": "Old Windows Servers open door for intruders, quarter of organizations must upgrade soon", "locator": "Headline (Erik van Klinken); body: 'Lansweeper surveyed 1.3 million instances of Windows Server running at more than 35,000 organizations ... 20.94 percent are still using Windows Server 2012'", "derived": false, "formula": null, "headline": false, "series": "lansweeper-2023-restatements", "history": [], "notes": "Wording record only: the body figures are reusable ids owned by install-base-audits (techzine-2023-09-01-lansweeper-windows-server-2012-share-20-94pct and -unsupported-share-6-72pct). Drift: 20.94% (or 20.94% + 6.72% = 27.66%) of instances becomes 'a quarter of organizations'; the share of organisations with at least one 2012 instance is unknown and would be higher, since one old server makes an organisation count. The body also says 'thousands of companies need to take action'. Oldest Wayback capture 2023-09-21 (CDX, raw cdx-www_techzine_eu_news_security_110828_old-windows-servers-open-door-for-in.json). Raw: techzine-2023-09-01-lansweeper.html.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#techzine-2023-09-01-headline-restates-lansweeper-instance-shares-as-quarter-of-organizations", "citation_text": "'Quarter of organizations must upgrade soon' was Techzine's 1 September 2023 headline for Lansweeper shares of Windows Server instances (20.94% on 2012, 6.72% already unsupported), turning a count of servers into a count of organisations (Techzine, 2023). Source: Techzine, \"Old Windows Servers open door for intruders, quarter of organizations must upgrade soon\" (https://www.techzine.eu/news/security/110828/old-windows-servers-open-door-for-intruders-quarter-of-organizations-must-upgrade-soon/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#techzine-2023-09-01-headline-restates-lansweeper-instance-shares-as-quarter-of-organizations." }, { "id": "morphisec-2024-10-21-unsourced-about-10pct-of-servers-on-out-of-support-windows", "family": "restatements-and-aggregators", "statement": "'Around 10 percent of all servers in use today' run an out-of-support Windows version such as 2008 or 2012, Morphisec wrote in October 2024, citing only 'available market share data' (Morphisec, 2024).", "short_statement": null, "short_refs": null, "value": 10, "unit": "% of all servers in use running out-of-support Windows (as stated, unsourced)", "display_value": "around 10% (unsourced)", "display_label": "", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2024-10", "population": "'all servers in use today' (unspecified)", "sample_n": null, "publisher": "Morphisec", "source_title": "Windows Server 2012 End of Life", "source_url": "https://www.morphisec.com/blog/how-do-you-secure-windows-server-2012-and-other-windows-legacy-servers/", "source_type": "manufacturer", "source_access": "open", "published_at": "2024-10-21", "accessed_at": "2026-10-14", "quote": "Available market share data puts the percentage of servers running on an out-of-support Windows operating system (such as Windows 2008, 2008r2, 2012, and 2012 r2), at around 10 percent of all servers in use today.", "locator": "Section 'The Legacy Server Landscape', first paragraph", "derived": false, "formula": null, "headline": false, "series": "", "history": [], "notes": "Unverified: verbatim on the page, but no source, date or population is given and the sentence carries no link (checked in the HTML). Searches on 2026-10-14 for any dated 'X% of businesses/organisations still run Windows Server 2012' or '... 2016' figure found none: the only dated version shares are vendor telemetry of servers (Lansweeper 2023: 20.94% of instances on 2012; Lansweeper via The Register 2026: 20.3% on 2016; ConnectWise 2024: about 14% of SIEM sources or alerts) and the Dutch Smart Profile 2017 site share. Queries used: '\"of businesses\" OR \"of organizations\" \"still running\" \"Windows Server 2012\" percent'; '\"% of organizations\" OR \"% of businesses\" \"still running Windows Server 2016\" 2026'; '\"Windows Server 2012\" end of support 2023 \"percent of organizations\" still use survey'. Pages scanned and saved without a version share: pbxscience (2026, W3Techs-based web OS shares only), Infinity Group, Certified NETS, NCS, Landbase (49,131 companies 'use Windows Server', no version split). Morphisec is an endpoint-security vendor; the 10% includes 2008/2008 R2.", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#morphisec-2024-10-21-unsourced-about-10pct-of-servers-on-out-of-support-windows", "citation_text": "'Around 10 percent of all servers in use today' run an out-of-support Windows version such as 2008 or 2012, Morphisec wrote in October 2024, citing only 'available market share data' (Morphisec, 2024). Source: Morphisec, \"Windows Server 2012 End of Life\" (https://www.morphisec.com/blog/how-do-you-secure-windows-server-2012-and-other-windows-legacy-servers/). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#morphisec-2024-10-21-unsourced-about-10pct-of-servers-on-out-of-support-windows." }, { "id": "derived-2026-10-14-5-of-23-pages-misstate-windows-server-2016-end-of-support-date", "family": "restatements-and-aggregators", "statement": "5 of 23 web pages checked on 14 October 2026 gave a Windows Server 2016 end-of-support date other than the 12 January 2027 on Microsoft's lifecycle page: 11 January 2027 twice, 13 January 2027, 14 July 2026 and a 2017 typo (comparison with Microsoft's lifecycle page, 2026).", "short_statement": "**5** of 23 web pages we checked gave a different Windows Server 2016 end-of-support date from Microsoft's.", "short_refs": null, "value": 5, "unit": "pages (of 23 checked) stating a Windows Server 2016 extended-support end other than Microsoft's", "display_value": "5 of 23 pages", "display_label": "23 dates aggregators, vendor guides and news pages checked 14 October 2026 against Microsoft's lifecycle page", "display_hook": null, "row_label": null, "publisher_short": null, "geography": "Worldwide", "period": "2026-10", "population": "Web pages giving a day-level Windows Server 2016 end-of-support date, collected for this page (aggregators ranking for 'windows server end of life dates' and 2016 end-of-life guides)", "sample_n": 23, "publisher": "Microsoft (baseline); 23 web pages compared", "source_title": "Windows Server 2016 - Microsoft Lifecycle", "source_url": "https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2016", "source_type": "primary", "source_access": "open", "published_at": "2026-10-14", "accessed_at": "2026-10-14", "quote": "Support dates are shown in the Pacific Time Zone (PT) - Redmond, WA, USA.", "locator": "Text above the 'Support Dates' table; table row 'Windows Server 2016' (raw HTML datetime '1/13/2027 6:59:59 AM' UTC, displayed as 12 January 2027 PT)", "derived": true, "formula": "Pages with a day-level 2016 extended-end date (raw/restatements-and-aggregators): endoflife.date 12 Jan 2027; endoflife.ai 12 Jan; jimber.io 12 Jan; rafftechnologies.com 12 Jan; itechtics.com 12 Jan; lansweeper.com blog 12 Jan; dpsolutions.com 12 Jan; flamingo.run 12 Jan; mind-core.com 12 Jan; netitude.co.uk 12 Jan; pcserverandparts.com 12 Jan; primaryt.co.uk 12 Jan; tsplus.net 12 Jan; vc3.com 12 Jan; servnetuk.com x3 12 Jan; software-express.de 12 Jan; innov8.co.uk 11 Jan 2027; block64.com 11 Jan 2027; bluesource.co.uk 13 Jan 2027; wps.com 14 Jul 2026; petri.com 12 Jan 2017 (typo, correct date also quoted). Wrong = 5; total = 23. Excluded: airit.co.uk ('January 2027', no day).", "headline": false, "series": "aggregator-date-discrepancies", "history": [], "notes": "Not a random sample: the pages are those the collectors saved while tracing aggregator dates and the 'one in five' claim, so the rate (22%) describes this set only. The three one-day errors split by direction: 11 January (innov8, Block64) looks like the mainstream day (11 January 2022) carried forward; 13 January (Bluesource) is the UTC date in Microsoft's markup. Each wrong page has its own record (ids ending -restates-windows-server-2016-extended-end-as-...). Microsoft's own pages are consistent: lifecycle page, support.microsoft.com 'Support for Windows Server 2016 will end in January 2027', and the Arc ESU page ('January 12, 2027 through January 2030' as quoted by Petri).", "permalink": "https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-2026-10-14-5-of-23-pages-misstate-windows-server-2016-end-of-support-date", "citation_text": "5 of 23 web pages checked on 14 October 2026 gave a Windows Server 2016 end-of-support date other than the 12 January 2027 on Microsoft's lifecycle page: 11 January 2027 twice, 13 January 2027, 14 July 2026 and a 2017 typo (comparison with Microsoft's lifecycle page, 2026). Source: Microsoft (baseline); 23 web pages compared, \"Windows Server 2016 - Microsoft Lifecycle\" (https://learn.microsoft.com/en-us/lifecycle/products/windows-server-2016). Via Zinstall, https://www.zinstall.com/research/windows-server-end-of-life-statistics#derived-2026-10-14-5-of-23-pages-misstate-windows-server-2016-end-of-support-date." } ] }