.NET 9 (STS)
maintenanceEOL 2026-11-10Next change 2026-11-10
.NET 9 is currently in maintenance; end of life is scheduled for 2026-11-10. First release: 2024-12-03. Latest stable release: 9.0.19. Lifecycle periods below are derived from official vendor sources with provenance.
Latest stable 9.0.19 (2026-08-11)
Lifecycle & support periods
| Phase | From | Until | Provider | Source |
|---|---|---|---|---|
| maintenance | 2024-12-03 | 2026-11-10 | Microsoft .NET Support Policy | Microsoft .NET releases index |
| end of life | 2026-11-10 | — | Microsoft .NET Support Policy | Microsoft .NET releases index |
Provenance
Every lifecycle fact is traceable to its authoritative source.
- Microsoft .NET releases indexfirst party · highhttps://builds.dotnet.microsoft.com/dotnet/release-metadata/releases-index.json
Retrieved 2026-08-28 · .NET 9 end-of-life
- Microsoft .NET releases indexfirst party · highhttps://builds.dotnet.microsoft.com/dotnet/release-metadata/releases-index.json
Retrieved 2026-08-28 · .NET 9 STS support (maintenance)
Recent releases
- 9.0.192026-08-11
- 9.0.182026-07-14
- 9.0.172026-06-09
- 9.0.162026-05-12
- 9.0.152026-04-14
- 9.0.142026-03-10
- 9.0.132026-02-10
- 9.0.122026-01-20
- 9.0.112025-11-19
- 9.0.102025-10-14
- 9.0.92025-09-09
- 9.0.82025-08-05