Launcher doesnt start

If I try to start the launcher it says "To run this application, you must install .NET. Would you like to download it now?" if i click yes nothing happens, I installed every .NET i am supposed to download, I read the faq the thing that was there didnt help saying i already have it installed maybe i just missed something that would have helped me but i looked alot, maybe the problem is dotnetfx35 because if i download it i cant start the setup not even in compatibility mode

didnt work

that worked thanks for the help