.NET 9
DOTNET-9.0Microsoft · Release · .NET
Support ends · in 1 day
.NET 9 is at risk: support ends on (in 1 day).
- Released
- 1y 12mo ago
- End of software maintenance
- in 1 day
- End of security support
- in 1 day
- End of support
- in 1 day
Lifecycle Milestones
| Released | 1y 12mo ago | |
|---|---|---|
| End of software maintenance | in 1 day | |
| End of security vulnerability support | in 1 day | |
| Last date of support | in 1 day |
Is .NET 9 still maintained?
For now. Microsoft maintenance for .NET 9 ends on 2026-11-10. Schedule the upgrade before then. See Microsoft's lifecycle bulletin.
When do security fixes for .NET 9 stop?
Security fixes for .NET 9 stop on 2026-11-10. After that date, a system on this release cannot be patched against newly disclosed vulnerabilities without upgrading.
What should I upgrade .NET 9 to?
Upgrade to a currently maintained Microsoft release. Check Microsoft's release notes for the recommended version.
.NET 9 Release Lifecycle
.NET 9 is a release line of Microsoft .NET. Microsoft ships bug fixes until the end of active support and security fixes until the end of security support; after that, systems still running it must move to a supported release to stay patchable. The dates below are the published milestones for this release line. Microsoft support for this product is ending soon. The last date of support is . After that date, no further bug fixes or security updates will be provided.