Microsoft Windows Server 2004-sac End of Life
Support dates and upgrade guidance — rebuilt from live data.
Microsoft Windows Server 2004-sac reached end of life on 14 Dec 2021. It no longer receives security fixes.
Support timeline
Official dates from the Microsoft Windows Server release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 27 May 2020 | — |
| End of life | 14 Dec 2021 | 4.7 years ago |
| Latest release | 10.0.19041 | final |
Where to go from 2004-sac
Recommended target: Microsoft Windows Server 2025 (supported until 14 Nov 2034).
The newest actively supported branch is Microsoft Windows Server 2025 (latest release 10.0.26100).
Frequently asked questions
Is Microsoft Windows Server 2004-sac still safe to use?
Microsoft Windows Server 2004-sac reached end of life on 14 Dec 2021, 1,699 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Microsoft Windows Server 2004-sac?
Yes — the final release (10.0.19041) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Microsoft Windows Server 2004-sac to?
Upgrade to Microsoft Windows Server 2025, the newest actively supported branch (supported until 14 Nov 2034).