Complete end-of-life dates, support windows, and security status for all Windows Server versions. Data sourced from endoflife.date and official vendor documentation. Updated at every deploy.
| Version | Latest Release | Release Date | EOL Date | Days | Status |
|---|---|---|---|---|---|
| 2000 LTS | 5.0.2195 | Feb 17, 2000 | Jul 13, 2010 | 5779 days past EOL | EOL |
| 2003 LTS | 5.2.3790 | Apr 24, 2003 | Apr 10, 2007 | 6969 days past EOL | EOL |
| 2003-sp1 | 5.2.3790 | Mar 30, 2005 | Apr 14, 2009 | 6234 days past EOL | EOL |
| 2003-sp2 LTS | 5.2.3790 | Mar 13, 2007 | Jul 14, 2015 | 3952 days past EOL | EOL |
| 2008-sp2 LTS | 6.0.6003 | Apr 29, 2009 | Jan 14, 2020 | 2307 days past EOL | EOL |
| 2008-r2-sp1 LTS | 6.1.7601 | Feb 22, 2011 | Jan 14, 2020 | 2307 days past EOL | EOL |
| 2012 LTS | 6.2.9200 | Oct 30, 2012 | Oct 10, 2023 | 942 days past EOL | EOL |
| 2012-r2 LTS | 6.3.9600 | Nov 25, 2013 | Oct 10, 2023 | 942 days past EOL | EOL |
| 2016 LTS | 10.0.14393 | Oct 15, 2016 | Jan 12, 2027 | 248 days remaining | Active |
| 1709-sac | 10.0.16299 | Oct 17, 2017 | Apr 9, 2019 | 2587 days past EOL | EOL |
| 1803-sac | 10.0.17134 | Apr 30, 2018 | Nov 12, 2019 | 2370 days past EOL | EOL |
| 2019 LTS | 10.0.17763 | Nov 13, 2018 | Jan 9, 2029 | 976 days remaining | Active |
| 1809-sac | 10.0.17763 | Nov 13, 2018 | Nov 10, 2020 | 2006 days past EOL | EOL |
| 1903-sac | 10.0.18362 | May 21, 2019 | Dec 8, 2020 | 1978 days past EOL | EOL |
| 1909-sac | 10.0.18363 | Nov 12, 2019 | May 11, 2021 | 1824 days past EOL | EOL |
| 2004-sac | 10.0.19041 | May 27, 2020 | Dec 14, 2021 | 1607 days past EOL | EOL |
| 20h2-sac | 10.0.19042 | Oct 20, 2020 | Aug 9, 2022 | 1369 days past EOL | EOL |
| 2022 LTS | 10.0.20348 | Aug 18, 2021 | Oct 14, 2031 | 1984 days remaining | Active |
| 23h2-ac | 10.0.25398 | Oct 24, 2023 | Oct 24, 2025 | 197 days past EOL | EOL |
| 2025 LTS | 10.0.26100 | Nov 1, 2024 | Oct 10, 2034 | 3076 days remaining | Active |
When a Windows Server version reaches end of life, the maintainers stop issuing security patches. Vulnerabilities discovered after this date are publicly disclosed on the National Vulnerability Database, exploit code appears on GitHub, and your systems remain permanently exposed.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the accumulation of unpatched vulnerabilities in EOL software. With a zero-day, nobody knows about the vulnerability. With EOL software, the vulnerability is public — listed, rated, and often weaponized — but no patch will ever exist. This is the most dangerous gap in enterprise security posture.
Organizations running EOL Windows Server should treat it as a vulnerability class in their risk register, apply compensating controls (network segmentation, enhanced monitoring, access restriction), and prioritize migration to a supported version.
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