Don't know but same thing when I ran full scan so I went looking thru my files and found a number of files that had the red circle with a horizontal line which I had to "unlock" so I could see what was in them, nada, nothing, don't know why they're even there if there's nothing in them, but wonder if this is the reason why they couldn't be scanned since I'm the only admin and no one else has ever used my computer, but even I had to "allow" myself access. Even though there was nothing in them I left them as they were.