system
7
My big question would be why do you want to restore files from the virus chest ?
Because Avast (don’t know what version) scanned his computer and locked some files away and not it does not work.
This happened to me once, but I don’t know if it will help.
I disconnected from the Internet, disabled Avast, went back to a restore point I knew was good and restored Windows, I had to go back a few restore points before it worked again.
Did a new restore point and also did one with another programme just in case.
After that I connected to the Internet, updated Avast.
I did a scan after that reluctantly, Avast ignored everything except Adobe?
I uninstalled Adobe and then any new programme I had put in, then re-installed Adode.
Did another scan and all was fine.
Did an online scan as well and nothing more found.
It may be that you installed something that has Malware on it that makes use of Adobe.
it might not work for you, but it is worth a try.