Word keeps denying me permission to view my own files.

I keep getting a "permission denied" notice when I try opening various Word files.

"Word cannot open the document. user does not have access privileges."

This is on my computer, trying to open files that I created.

How does my computer deny me access to my own files? How can I fix this? And do I need to do this fix for each and every time this happens--happens quite often--or is there a way to fix this once and for all?

Not terribly computer literate here, so forgive me if I don't catch on right away. No doubt this is some easy fix that my analog mind simply can't tumble into.

If I can somehow fix this I can then move on to the "this file is corrupted" notices which are equally annoying.

Using a Windows 10 program, which I've long since grown to hate.