You can only RUN one type of Security Software usually in McAFEE your get the Firewall and Anti-Virus, there are also more Comprehensive Packages for Internet Shopping
When I DownLoad the Subscription from McAFEE it automatically Turns-Off Windows Firewall adding the McAFEE Firewall.Then the Subscription RUNS for a Year($$40.00)Updateing my PC.The Comprehensice Package RUNS about $$70.00.I have tried the ISP-provided software../I really prefer the Subscription.And the New Microsoft version of Security Software has me wary also. I find it difficult to trust the FREEBIES../I've tried the Spybot..its virtually worthless..since it doesn't know what its SCANNING../its just scanning relentlessly.I have RUN multiple SCANS and it would FIND the same(questionable)Problem(??)each SCAN. I find it can't be TRUSTED..the others.I rely on a UPDATEING SERVICE and in five years McAFEE has Defended my PC for a reasonable rate.The decision in my opinion.Is all about Internet Shopping
and McAFEE has the edge.
Thanks and Regards