Options are not working

I have a problem, all the engine functions have stopped working, when I click on something the black background appears and many functions / options do not work.
I’ve already reinstalled UE4 v4.18.3 twice, what could it be?

Hello,

We’ve recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://forums.unrealengine.com/unreal-engine/announcements-and-releases/1410408-unreal-engine-bug-submission-form

Thanks