Yep. For one game, the launcher screen depends on an old version of a Microsoft .NET runtime that is no longer distributed by Microsoft, and the current version

Yep. For one game, the launcher screen depends on an old version of a Microsoft .NET runtime that is no longer distributed by Microsoft, and the current version (theoretically compatible) is disallowed because the launcher has apparently hardcoded a dependency to a specific version. Then there was another game where I had to install a different DLL to get it to run. Then there was IL2 Sturmovik that was just plain broken for a long time on more recent versions of Windows. I of course didn't discover this until after the refund window...