Tips? If dotnet-mgcb-editor-windows is not generated when updating MonoGame.

I frequently run into this issue when updating MonoGame. It might just be my environment, but I hope this helps someone!

Create a new nuget.config file in the project root (the folder where the .csproj file is located).

<configuration>
  <packageSources>
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
  </packageSources>

  <packageSourceMapping>
    <packageSource key="nuget.org">
      <package pattern="*" />            <package pattern="dotnet-mgcb*" /> 
      <package pattern="MonoGame.*" />
    </packageSource>
  </packageSourceMapping>
</configuration>

and then save it. Right-click that location to open a command prompt,

dotnet nuget locals all --clear

dotnet clean

dotnet restore

dotnet tool restore

And succeeded!

I would very much appreciate it if this could be handled by the system.