Avast! Sandbox wirus

My problem is a little bit strange, because as always once a week I activated avast scan. After a short while, it detected about 80 viruses. So I stopped it, and looked at their localization. All of them are in folder C:\avast! sandbox. I tried to delete them, but it says I don’t have permissions to do it. My question is: how to remove them?

If any logs needed, I can post them, just write which ones, because I am new user not that advanced at writing posts.

Reset avast sandbox/safezone http://www.avast.com/faq.php?article=AVKB17#artTitle

Thanks! It works good now :slight_smile: