Microsoft calls time on ASP.NET Core 2.3 on .NET Framework
Briefly

Microsoft calls time on ASP.NET Core 2.3 on .NET Framework
"After that date, Microsoft will no longer provide security patches, bug fixes, or technical support for ASP.NET Core 2.3. Users are advised to upgrade to modern ASP.NET on .NET 10."
"The .NET Framework is the Windows-only version of .NET and is still maintained, though focused on stability rather than major new features. Version 4.8.1 is the latest release, which added native support for Arm64 as well as accessibility improvements for Windows Forms and WPF applications."
"Microsoft fudged this problem by releasing ASP.NET Core 2.3 in early 2025, which despite the version number was a re-release of version 2.1. The logic was that version 2.2 had breaking changes from 2.1, and became unsupported earlier."
Microsoft has announced that ASP.NET Core 2.3 will reach its end-of-support date on April 7, 2027. After this date, no security patches, bug fixes, or technical support will be provided. Users are encouraged to upgrade to modern ASP.NET on .NET 10. The .NET Framework continues to be maintained, focusing on stability, with the latest version being 4.8.1. The compatibility of ASP.NET Core with .NET Framework has been complex, particularly with the release of version 2.3, which was essentially a re-release of version 2.1 due to earlier breaking changes.
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