ASP.NET Core 2.3 end of support announcement

[danroth27]

Update: The ASP.NET Core 2.3 end of support date was updated from April 7, 2027 to April 13, 2027 to align with the Microsoft servicing release cycles.

Today we are announcing that ASP.NET Core 2.3 will reach end of support on April 13, 2027. After that date, Microsoft will no longer provide security patches, bug fixes, or technical support for ASP.NET Core 2.3.

This announcement provides the required 12 months of advance notice, as defined by the Microsoft Support Lifecycle Policy for products classified as "Tools."

Current support policy

ASP.NET Core 2.3 packages (latest patched version only) are currently supported on .NET Framework, following the support cycle for those .NET Framework versions. After April 13, 2027, this support will end regardless of the .NET Framework version in use.

Note that the ASP.NET Core 2.3 packages include the Entity Framework 2.3 packages, which will end support on the same date.

Impact of end of support

After ASP.NET Core 2.3 reaches end of support:

• No new security updates will be issued for ASP.NET Core 2.3.
• Continuing to use an unsupported version may expose your applications to security vulnerabilities.
• Technical support will no longer be available for ASP.NET Core 2.3.
• The ASP.NET Core 2.3 packages will be deprecated.

Upgrade recommendation

We recommend upgrading to a currently supported version of .NET, such as .NET 10 (LTS).

To help with the upgrade process, we recommend using GitHub Copilot modernization, which provides AI-powered assistance to help you analyze, plan, and execute your migration to a modern .NET version.

Resources

• ASP.NET Core Support Policy
• GitHub Copilot modernization
• Migrate from ASP.NET to ASP.NET Core
• Blog post: ASP.NET Core 2.3 end of support announcement