After updating Windows 10, Windows can no longer manage any appx packages, and I can't deploy WinUI 3 apps from VS · Issue #25832 · dotnet/maui
github.com
.NET MAUI Team notes This issue isn't related to .NET MAUI or .NET9. You can follow the WinUI issue here Workaround posted here microsoft/WindowsAppSDK#4881 (comment) One thing to clarify here is t...

Beware if you’re updating to .NET 9 and need your MAUI Windows app working