UE 4.13.2 won't open "please wait"

Hi everyone,
I have used unreal engine for a while, some time back. But I’ve been out of the game for a while and now I’m trying to get into it again. I downloaded the launcher en installed the unreal engine 4.13.2. Everything went fine, but now when I click launch it says “please wait” and then “launch” reappears, but nothing happened. I’ve installed 4.12.5 and 4.11.2 too and they have the same issue. I also tried reinstalling the launcher but that didn’t fix it either.
Does someone know what I’ve done wrong or how to fix this?

Thanks for taking the time to read this and perhaps reply.

When I open an existing project, it does open.

I fixed it!

problem was:
I had MVC++ (x86) installed, and apparently I needed MVC++ (x64). After I installed that, the engine opened!