Windows 11 · 25H2 · .NET Framework update

.NET Framework Preview Update for Windows 11 - KB5122385 (26200.9345)

Windows 11 25H2: Current mainstream release

This is a .NET Framework package for Windows 11 25H2, not an operating-system build. Its history below lists other .NET packages on the 26200 base.

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AI summary

This Insider Preview .NET Framework update delivers experimental servicing and compatibility refinements for Windows 11 build 26200.9345, without introducing major new user-facing features or UI changes.

Generated from the package's release notes and forum coverage. Verify against Microsoft's release-health page before acting on it.

Known issues — reported on the forum

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