Thanks for the replies guys, but I really can;t understand how Avast! wrongly detecting system files as viruses and deleting them can be the problem of Windows Update?

I guess I really am too old and stupid. :frowning:

My fear is that if I update and my system files are deleted I will have no recourse other than to buy a new PC. I am not at all tech savvy enough to replace system files. I was hoping that maybe Avast! might have been able to fix the issue.

Okay, now no one has answered this yet: Because Avast! is constantly telling me that my system is now unprotected because I have NOT updated, is the system still protected are am at risk? Can I turn off the nags and warnings somehow if it is safe to continue with version 1489?