One of the suggestions for deleting files that are difficult or hard to delete is to boot into safe mode and delete them there.
I had some video files that were difficult to delete. The windows deletion dialogue would be stuck at "discovering". So I booted into safe mode and was able to delete them. However, I do not know the cause for deleting difficulties during normal operation. What is the culprit if I was able to delete them in safe mode?
Thanks!
There are many possibilities. Lacking more info, we can only speculate.
Safe Mode allows a limited set of programs and servers to start. It also loads only a basic set of drivers.
One of the reasons you might have trouble deleting a file is because some other program has the file open.
Putting these two facts together, it is likely that you had a program that had your files open, and when you booted into Safe Mode, that program didn't start, so the files weren't open, and thus could be deleted.