If you receive File in Use, The action can’t be completed because the file is open in another program even if the file is closed in another program, then this post will help you.

How to delete a file being used by another program Here are some practical ways to dodge the pop-up and delete files that are in use by a program on your Windows PC.

Windows won't let you delete, move, or rename a file if a program is using it. Frustratingly, it also won't tell you which program is using the file so that you can solve the problem.

I decided to organize my music directory and was plagued by "Can't rename/move this directory as it's in use by another program".