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Windows Server
Active
Operating Systems Latest Version: 10.0.26100 Latest Release: N/A
Windows Server is Microsoft's enterprise server operating system for hosting, networking, and data center workloads.
Versions
20
Latest Version
10.0.26100
Active Support
2
EOL
16
Lifecycle Timeline
Today β
2025
2025
23h2-ac
23h2-ac
2022
2022
20h2-sac
20h2-sac
2004-sac
2004-sac
1909-sac
1909-sac
1903-sac
1903-sac
1809-sac
1809-sac
2019
2019
1803-sac
1803-sac
Active SupportSecurity SupportEOL
Versions
| Release | Release Date | Active Support | EOL | Latest Version | LTS | Status |
|---|---|---|---|---|---|---|
| 2025 | Nov 1, 2024 | Oct 9, 2029 | Oct 10, 2034 | 10.0.26100 | Yes | Active |
| 23h2-ac | Oct 24, 2023 | Apr 24, 2025 | Oct 24, 2025 | 10.0.25398 | No | EOL |
| 2022 | Aug 18, 2021 | Oct 13, 2026 | Oct 14, 2031 | 10.0.20348 | Yes | Active |
| 20h2-sac | Oct 20, 2020 | Aug 9, 2022 | Aug 9, 2022 | 10.0.19042 | No | EOL |
| 2004-sac | May 27, 2020 | Dec 14, 2021 | Dec 14, 2021 | 10.0.19041 | No | EOL |
| 1909-sac | Nov 12, 2019 | May 11, 2021 | May 11, 2021 | 10.0.18363 | No | EOL |
| 1903-sac | May 21, 2019 | Dec 8, 2020 | Dec 8, 2020 | 10.0.18362 | No | EOL |
| 1809-sac | Nov 13, 2018 | Nov 10, 2020 | Nov 10, 2020 | 10.0.17763 | No | EOL |
| 2019 | Nov 13, 2018 | Jan 9, 2024 | Jan 9, 2029 | 10.0.17763 | Yes | Security |
| 1803-sac | Apr 30, 2018 | Nov 12, 2019 | Nov 12, 2019 | 10.0.17134 | No | EOL |
| 1709-sac | Oct 17, 2017 | Apr 9, 2019 | Apr 9, 2019 | 10.0.16299 | No | EOL |
| 2016 | Oct 15, 2016 | Jan 11, 2022 | Jan 12, 2027 | 10.0.14393 | Yes | Security |
| 2012-r2 | Nov 25, 2013 | Oct 9, 2018 | Oct 10, 2023 | 6.3.9600 | Yes | EOL |
| 2012 | Oct 30, 2012 | Oct 9, 2018 | Oct 10, 2023 | 6.2.9200 | Yes | EOL |
| 2008-r2-sp1 | Feb 22, 2011 | Jan 13, 2015 | Jan 14, 2020 | 6.1.7601 | Yes | EOL |
| 2008-sp2 | Apr 29, 2009 | Jan 13, 2015 | Jan 14, 2020 | 6.0.6003 | Yes | EOL |
| 2003-sp2 | Mar 13, 2007 | Jul 13, 2010 | Jul 14, 2015 | 5.2.3790 | Yes | EOL |
| 2003-sp1 | Mar 30, 2005 | Apr 14, 2009 | Apr 14, 2009 | 5.2.3790 | No | EOL |
| 2003 | Apr 24, 2003 | Apr 10, 2007 | Apr 10, 2007 | 5.2.3790 | Yes | EOL |
| 2000 | Feb 17, 2000 | Jun 30, 2005 | Jul 13, 2010 | 5.0.2195 | Yes | EOL |
Frequently Asked Questions
Which versions of Windows Server have reached end of life?
The following Windows Server versions have reached end of life and no longer receive security updates: 23h2-ac, 20h2-sac, 2004-sac, 1909-sac, 1903-sac, 1809-sac, 1803-sac, 1709-sac (and 8 more). It is recommended to upgrade to a supported version.
Is it safe to continue using Windows Server 23h2-ac?
Windows Server 23h2-ac has reached end of life and no longer receives security patches or bug fixes. Continuing to use it may expose your systems to known vulnerabilities. We strongly recommend upgrading to a supported version.
What is the latest version of Windows Server?
The latest version of Windows Server is 10.0.26100, released in the 2025 release cycle.
How many versions of Windows Server are currently supported?
Windows Server currently has 4 actively supported version(s): 2025, 2022, 2019, 2016.
When does Windows Server 2025 reach end of life?
Windows Server 2025 is scheduled to reach end of life on Oct 10, 2034.
What should I do when Windows Server reaches end of life?
When a Windows Server version reaches end of life, you should: 1) Plan your migration to a supported version as soon as possible. 2) Review the release notes for breaking changes. 3) Test your applications thoroughly in a staging environment. 4) Update your dependencies to ensure compatibility with the new version.