Just started working with 4.20 and I built the engine project files for VS2015. When I generate project files for my projects, it generates for VS2017. I was thinking it would be nice if it generated project files for the same VS version as the engine.

I got around it by editing the Arguments local variable in DesktopPlatformBase::GenerateProjectFiles(). I changed it to " -projectfiles -2015". Then I built UnrealVersionSelector and copied the exe into the launcher Binaries/Win64 directory. Then I get VS2015 projects.

Not sure if this qualifies as a bug so I'm putting it here as a requested feature.