.NET 9
Current patch release: 9.0.13
End of life in 253 days (November 10, 2026). Plan your upgrade now.
November 12, 2024
Ongoing
November 10, 2026
9.0.13 (February 10, 2026)
About .NET 9
.NET 9 is a Standard Term Support (STS) release focused on cloud-native performance, AI integration building blocks, and developer productivity improvements.
Key Changes in .NET 9
- ●Significant ASP.NET Core performance improvements (faster Kestrel, reduced allocations)
- ●Built-in AI/ML integration helpers with Microsoft.Extensions.AI abstractions
- ●LINQ improvements with new methods like
CountBy()andAggregateBy() - ●Improved AOT (Ahead-of-Time) compilation support for smaller, faster deployments
- ●ARM64 performance improvements across the runtime
.NET 9 is currently under active support, released on November 12, 2024. It receives regular bug fixes, security patches, and may still get minor feature additions. The latest patch release is 9.0.13 (February 10, 2026).
Migration Notes
Update your TargetFramework to net9.0 and run dotnet restore. Review NuGet package compatibility. If you are on .NET Framework (4.x), consider the .NET Upgrade Assistant tool for guided migration to modern .NET.
Lifecycle Progress
65% through its lifecycle. 253 days remaining.
All .NET Versions
| Version | Released | EOL | Latest | Status |
|---|---|---|---|---|
| 10 | November 11, 2025 | November 14, 2028 | 10.0.3 | LTS — Active |
| 9 (current page) | November 12, 2024 | November 10, 2026 | 9.0.13 | Active |
| 8 | November 14, 2023 | November 10, 2026 | 8.0.24 | LTS — Active |
| 7 | November 8, 2022 | May 14, 2024 | 7.0.20 | End of Life |
| 6 | November 8, 2021 | November 12, 2024 | 6.0.36 | End of Life |
| 5 | November 10, 2020 | May 10, 2022 | 5.0.17 | End of Life |
| 3.1 | December 3, 2019 | December 13, 2022 | 3.1.32 | End of Life |
| 3.0 | September 23, 2019 | March 3, 2020 | 3.0.3 | End of Life |
| 2.2 | December 4, 2018 | December 23, 2019 | 2.2.8 | End of Life |
| 2.1 | May 30, 2018 | August 21, 2021 | 2.1.30 | End of Life |
| 2.0 | August 14, 2017 | October 1, 2018 | 2.0.9 | End of Life |
| 1.1 | November 16, 2016 | June 27, 2019 | 1.1.13 | End of Life |
| 1.0 | June 27, 2016 | June 27, 2019 | 1.0.16 | End of Life |
Frequently Asked Questions
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