Explorer does not delete the file because the file is opened in "Explorer" where to look for the problem?

Question

Windows

In short, two users
, user one cannot delete some files from %userprofile%upload and
user two cannot delete some files from his network folder from his network folder.
when you close the explorer through the console, everything is deleted.
What ideas do you have and where else to look?

Answer 1

Use unlocker. Called from the context menu of a file and shows (with the ability to close) the processes that are locking the file.
Even regular indexing can cause problems.