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This article provides a high-level overview of what's new with Windows Presentation Foundation (WPF) in .NET 11 Preview 3. For detailed information, see the release announcements. Use the release announcements to get an overview of the entire .NET 11 release. The rest of the sections highlight some of the most important changes to WPF.
.NET 11 Preview 3 was released in April 2026.
Release announcements
Each release announcement provides detailed information about WPF changes for .NET 11:
Bug fixes
- WPF now guards against crashes caused by Desktop Window Manager (DWM) failures.
- Fluent window backdrop and background on Windows 10 are fixed.
- Fixed an
InvalidOperationExceptionthat occurred whenWeakEventTable.Purgemodified the data table during enumeration withEnableWeakEventMemoryImprovementsenabled. Table updates are now deferred during purge to avoid invalidating the enumerator.
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