Finally got Visual Studio 2017 Community Edition working again!

OK – a technical post for any programmers out there whose system knowledge is a bit lacking these days (like mine, apparently). Basically, I had a problem and after a few months I now have an answer, so I am sharing. The problem was that I had a working version of Visual Studio 2017 Community Edition and decided to upgrade. During the upgrade I got the following message: PackageId:Microsoft.VisualStudio.MinShell.Interop.Msi;PackageAction:Install;ReturnCode:1911; And