Hi,
I’m thinking of installing Avast5 free on my Vista sp2 PC.
Just wondering if it will conflict with Win Defender. In other words, should I uninstall Win Defender?
THX
mrtan
No. I use Avast 5 IS and Windows Defender without problem!
Welcome to avast! forum.
No. They’re compatible.
Thanks guys, I’ll leave Win Def running then 
I keep Windows Defender updated regulary:
Get the latest definitions
Latest definition version: 1.75.1025.0
http://www.microsoft.com/security/portal/Definitions/ADL.aspx