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More information needed. Which solution are you looking at? Which Visual Studio version are you using?
The image you attached is private and not accessible.
That said, my first guess is that you're using Visual Studio 2026, which in my experience refuses to download the .NET 9 SDK. In global.json and change the sdk version to 10.0.1 (from 9.0.31).
The Windows Community Toolkit requires Visual Studio 2022 or later to build and Windows 10 or later to execute. If you're building an app with WinUI and Windows App SDK for the first time, follow these installation instructions.
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Avid29 commentedon Apr 2, 2026
More information needed. Which solution are you looking at? Which Visual Studio version are you using?
The image you attached is private and not accessible.
That said, my first guess is that you're using Visual Studio 2026, which in my experience refuses to download the .NET 9 SDK. In
global.jsonand change the sdk version to10.0.1(from9.0.31).Balkoth commentedon Apr 2, 2026
Given this environment:
Avid29 commentedon Apr 2, 2026
Okay. How did you open the solution? Did you open
CommunityToolkit.AllComponents.slnor did you clickGenerateAllSolution.bat?What component do you want to look at?
Arlodotexe commentedon Apr 20, 2026
@Balkoth If you could provide the exact repro steps and setup that you're running to hit this bug, we can help here.
Balkoth commentedon May 27, 2026
global.jsonwith"version": "10.0.300"(Toolkit + Tooling)dotnet tool restoreGenerateAllSolution.bat-> Errors upon errors, does not matter if everything is run as admin. Please advise on how to build and run this project again.
Balkoth commentedon Jul 29, 2026
I still can not build this from the steps i provided.