Microsoft Nano Server 1903 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Microsoft Nano Server 1903 reached end of life on 8 Dec 2020. It no longer receives security fixes.
Support timeline
Official dates from the Microsoft Nano Server release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 21 May 2019 | — |
| End of life | 8 Dec 2020 | 5.7 years ago |
| Latest release | 10.0.18362 | final |
Where to go from 1903
Recommended target: Microsoft Nano Server 2025 (supported until 10 Oct 2034).
The newest actively supported branch is Microsoft Nano Server 2025 (latest release 10.0.26100).
Frequently asked questions
Is Microsoft Nano Server 1903 still safe to use?
Microsoft Nano Server 1903 reached end of life on 8 Dec 2020, 2,070 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Microsoft Nano Server 1903?
Yes — the final release (10.0.18362) 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 Nano Server 1903 to?
Upgrade to Microsoft Nano Server 2025, the newest actively supported branch (supported until 10 Oct 2034).