c# – How can I force Visual Studio to use MSBuild for .NET 9? - Faz Business

I tried creating a custom task using .NET 9. The project builds successfully with dotnet build, but when I try to build it in Visual Studio, it fails with an error:

Could not find file or assembly “System.Runtime, Version=9.0.0.0”

From what I understand, this happens because Visual Studio uses the .NET Framework version of MSBuild, which can’t load .NET Core-built DLLs, while the dotnet CLI uses the .NET Core version of MSBuild.

Here’s the version difference I found in the Developer command prompt:


> msbuild -version
MSBuild version 17.13.19+0d9f5a35a for .NET Framework  
17.13.19.12613  

> dotnet msbuild -version  
17.13.20.16214

How can I make Visual Studio use the .NET Core version of MSBuild instead?

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