OmniSharp.MSBuild.ProjectManager Failed to load project on Linux

Question

I am learning C# on my Manjaro Linux Notebook. I tried to install the ms-vscode.csharp extension, but when opening any .NET Core project I get the following Error Message:

Answer 1

I solved this by adding a omnisharp.json file with following content:

{
    "MSBuild": {
        "UseLegacySdkResolver": true
    }
}

Source