|??? What antivirus would do that??? That doesn't make any sense. I would believe a possible infection sooner and then would recommend Malwarebytes to check for it.|
Are you using one or more 'Users' on your system? Because one user may need permission to access files saved under another user.
Is this something that only recently began?
Are these new files or old files?
Are they files transferred from another system?
(more information may help us help you)
You have to be a little bit crazy to keep you from going insane.