I downloaded Unreal 4.9.0. The programm asks me to use Visual Studio 2013, however I have Visual Studio 2015. Why can’t I use Visual 2015?
This might sound a bit daft, but the reason you cannot use it is because it is not yet supported. As simple as that. Support is coming though, but it doesn’t look like it will be production-ready for the official 4.9. So… maybe 4.10 or later.
Read more about it here:
and here (last paragraph in first post):
That’s really sad!