I used a program (Greatis' StopUpdates10) to stop windows 10 updates for a long time. And I finally decided to restore updates. The system started updating and free disk space went from 35GB to 15GB and updates was only 50% done. So I stopped updates again and used "Disk Cleanup" to remove temporary files, free disk space became 25GB, there was a folder that wasn't there before, the folder was 10GB in size and located directly in the system drive (C:) named "$WINDOWS.~BT".
The problem is it can't be deleted, It requires permission from "trusted installer". I tried the basic windows delete and tried deleting it using CMD and file shredder and none of them worked, I saw solutions about changing permissions in the "Security" tab in the folder's properties, It doesn't even have that tab. Please help.
Thank you.
Edit : I found the solution in this question.