A scan of my system detects more than 200 "files protected with a password" and then impossible to scan. What's that?
question about this is asked once a week in here....so lots of info if you search

How do I handle files that avast! can’t scan? https://blog.avast.com/2014/02/28/how-do-i-handle-files-that-avast-cant-scan/

I receive various times a day a message telling me "updating impossible"? Why?
who/what program give that message.....avast or windows? what are you doing when it happens...