Microsoft has announced that .NET 8 and .NET 9 will reach their end of support on November 10, 2026, meaning no more security patches or technical assistance will be provided after this date. Developers are encouraged to upgrade to .NET 10, which will be supported until November 2028, with the transition process beginning soon with updates to Visual Studio 2022. While existing applications will continue to run post-deadline, developers will need to handle their own security updates and will lose access to technical support. Transitioning to .NET 10 requires careful planning and testing, especially for organizations using third-party applications, as changes in the framework may affect performance and functionality

Microsoft Confirms .NET 8 and .NET 9 End of Support on November 10, 2026

Microsoft has confirmed that .NET 8 and .NET 9 will both reach end of support on November 10, 2026, cutting off all security patches and technical assistance after that date. The company is urging developers to upgrade to .NET 10, its Long Term Support release that will remain supported through November 2028. Starting with a future Visual Studio 2022 update, the older runtime components will be flagged as unsupported, though existing applications will continue to run without intervention. Organizations should review their codebases and vendor software now to ensure they can migrate to net10.0 before the hard deadline arrives.

Microsoft Confirms .NET 8 and .NET 9 End of Support on November 10, 2026 @ NT Compatible