I have this issue with Acrobat Reader 2017. I am trying to sort through a bunch of pdf files and place them in the proper folders. I've come across this bug. If I recently open a pdf in Reader and close it in Reader, I cannot move or delete the file until ALL of the pdfs in reader are closed for a while.

So, basically, I've closed the file I want to move and have removed it from the Recent files, but I still cannot move the file until I completely close the Reader.

How do I fix this? I would like to be able to move recently opened files without having to completely close the Reader each and every time.

Please skip over the questions about updates. My program is run by my university and they are big on mandatory updates. As soon as you release them, my computer downloads them automatically, no matter what I am working on. So, please spare me.