Microsoft Windows 7 compatible antivirus software. Some people claim they are having problems with Kaspersky 8 , Trend Micro Internet Security 2009 according to a forum that relates to Windows 7 operating system. Below is a list of antivirus programs that work or are compatible with the new OS as of this writing:
Avast! (Most users have no problem)
Avira Antivir Personal Edition (No issues so far)
Eset Smart Security 3 and 4 (Working flawlessly with Windows 7)
Comodo
Eset Nod32 4 (some users reported having some issues)
Kaspersky 2009
Norton Internet Security 2009
Norton 360 version 2.0
Sophos v7.6
Bitdefender 2009