Hi,
I had to reinstall Windows. Now my Unreal Engine Library is empty.
As the original installation of several UE4 versions still exists, I’d like to verify instead of reinstall.
Is there a way to force verify? As it is greyed out in the Library.
My “C:\ProgramData\Epic\UnrealEngineLauncher\LauncherInstalled.dat” is empty. 
{
"InstallationList": []
}
Many thanks.
Cheers
TiggA
following versions I have installed and are able to start out of the directories:
(but I’d love to do this out of the launcher as there I can keep versions up to date)
4.10
4.11
4.12
4.13
4.14
UE_4.15
Hey MagicTigger,
For installation issues and issues with the Epic Games Launcher, please visit http://help.epicgames.com/
There you’ll find various troubleshooting articles as well as an Email Us button on the side of the page that you can use to get in touch with one of our support staff.
Have a great day