The good news is,it turns out that even if you’re not the developer of a particular .NET app,you can target it to a specific version of the .NET runtime after-the-fact. It’s not particularly well documented –unless you’re a .NET developer yourself,in which case you should have done this BEFORE your app ever got in front of a customer –but the capability is there. …Of course,one of the challenges is figuring out what the heck runtime version corresponds to a human-readable “version”of .NET …[...]