Avast was messing with some of.my programs and was stopping the windowl updates from installing. Check there site. And trying to install it was not happening and ended up using another program to try and remove it. It really screwed up my computer!!!I did the crash format and install new os and it started updating right away again. I was wanting a new anti-virus package and I don't like avg or norton. And am not about to try avast again. I used zone alarm firewall before and liked it back when I had xp in my computer. I just installed the software in it. It has anti-virus and spare and of course firewall. So far so good but may take a few days to see how it works out. Will let you know. Wd 65