Problem recognise unreal engine folder

i have a problem with the epic games launcher, because it doesn’t see anyone of my unreal engine editor(4.8 / 4.9 / 4.10) and anyone of my project folder.
i tried to follow this procedure https://answers.unrealengine.com/questions/64706/changing-engine-directory.html but nothing.
The Epic games launcher is in C: folder and the unreal editor (4.8/4.9/4.10) are in another hard disk.
how can i fix this issue?
thanks.

Hello Revelage!

I’m sorry to hear that you are having trouble. If you wish to have the launcher and the editors on different drives, then you will need create symbolic links between the launcher and the editor directories. Information on how to do that can be found in this post and through this link.