when i click launch it says “busy” and then nothing happens.
If you’re having problems using the Epic Games Launcher to open the Unreal Engine, please try launching the engine directly from its directory. The default directory for the .exe on Windows is C:\Program Files (x86)\Epic Games\4.13\Engine\Binaries\Win64\UE4Editor.exe. If this allows the engine to launch, we know that this is a launcher issue for sure. In that case, please try searching http://help.epicgames.com/ for your issue. If you can’t find any information particular to your issue, please use the “Email Us” link at the top right of the same page for further assistance.