.NET 9

.NET 9 reaches end of support on November 10, 2026, when security updates stop.

Status: Security fixes only
Released: November 12, 2024
Security updates until: November 10, 2026
Official lifecycle page: dotnet.microsoft.com
Checked on: September 29, 2026

.NET 9 gets security fixes only. Security updates continue until November 10, 2026. Microsoft released it on November 12, 2024. .NET 9 is in its maintenance phase, with security fixes only. Microsoft extended support for .NET 9, a standard-term release, so that .NET 8 and .NET 9 both end on November 10, 2026.

Product: .NET
Version: 9
Sources: Page URL
.NET support policy https://dotnet.microsoft.com/en-us/platform/support/policy/dotnet-core

Page	URL
.NET support policy	https://dotnet.microsoft.com/en-us/platform/support/policy/dotnet-core

Questions

When does .NET 9 reach end of life?

Security updates for .NET 9 continue until November 10, 2026.

Is .NET 9 still supported?

Only with security fixes. .NET 9 gets security updates until November 10, 2026.

When was .NET 9 released?

.NET 9 was released on November 12, 2024.

Where do the .NET 9 dates come from?

From the vendor’s official pages (.NET support policy), checked on September 29, 2026.

Sources

Every date comes from the vendor’s official lifecycle or release page: Microsoft Lifecycle and Windows release health, Ubuntu’s release cycle, Debian releases, the Python developer guide, the Node.js release schedule, php.net, Oracle’s Java SE support roadmap and Lifetime Support Policy, the .NET support policy, PostgreSQL versioning, Mozilla’s release calendar and Google’s Pixel update policy. Each record links its sources and shows the date they were checked.