Avast Home edition

The last few times I have ran the virus scan it shows all the files on my computer are unable to scan. I have not had this problem except for the last three times I have ran the program. Help!

Hi cjbeck,
Welcome to the forum.
Please help us help you.
What version of Avast! are you using
What vps version?
What OS?
What exactly is the error message? (If you are getting one.)
The path and filename is of great help.
etc. etc.
The more info you supply, the easier it is for us to solve your problem.

all the files on my computer are unable to scan
Do you really mean all, e.g. none of the files on your system can be scanned? Or do you mean at the end of a scan you get a list of [b]all[/b] of the files it can't scan along with the reason why?

If the later - Many programs (usually security based ones) password protect their files for legitimate reasons such as AdAware and Spybot Search & Destroy, there are others.

When you run scans with the above programs and you delete harmful entries that they detect, a copy is kept (in quarantine/restore/backup) in case you need to reverse what you did. These are usually password protected, you should do some housekeeping and delete old backup/recovery/quarantine entries (older than two weeks or so), this will reduce the numbers of files that can’t be scanned.

By examining 1) the reason given by avast! for not being able to scan the files, 2) the location of the files, you can get an idea of what program they relate to.

Files that can’t be scanned are just that, not an indication they are suspicious/infected, just unable to be scanned.