+ 2 Votes this is my personal favorite PurpleSkys Moderator 2 years ago Avast free home edition http://download.cnet.com/Avast-Free-Antivirus/3000-2239_4-10019223.html?part=dl-85737&subj=dl&tag=button . There are others out there as well like AVG free and Bitdefender that works just as well. + 0 Votes Agree with MSE bethjanick 1 year ago Using Microsoft Security Essentials & agreed with MSE. + 1 Votes While I'm not a great lover of Microsoft Products OH Smeg 2 years ago Microsoft Security Essentials is available free here and works supposedly the best with any Windows Product. After all they make Windows so they should know how to incorporate a AV product into Windows better than anyone else. http://windows.microsoft .com/en-AU/windows/products/security-essentials Just remember to remove the space from between microsoft and the .com for a working link. Col + 1 Votes Micosoft Security Essentials oramirez02 2 years ago I??ve worked with Microsoft Security Essentials for over a year and have had a problem with viruses in only one ocassion and was easily solved. I've seen plenty of PCs with this software installed with great results. + 2 Votes MSE Ger64 2 years ago Go with Microsoft Security Essentials, have installed it on a lot of client computers over the past two years and had no complaints. + 0 Votes MSE here too JPElectron 2 years ago I agree, Microsoft Security Essentials is the best free one that actually works + 0 Votes Best Free Anti Virus/Anti malware DaGordofather 2 years ago I'm with you guys. Microsoft Security Essentials has been first class over the last year. So long as your copy of Windows is genuine, it is free to download and use. + 1 Votes Best FREE AV/Firewall BillGates_z 2 years ago Comodo Security Suite + 1 Votes Free Comodo Firewall DaGordofather 2 years ago The best! Tried them all and prefer Comodo to any of the others. + 0 Votes Onboard with the rest jacoberdei 1 year ago MSE is the better free AV client out there. Personally I like SDA 2012 because of the user interface but that is a paid AV client. MSE provides live up front protection along with real time updates. For it being free you can't go wrong. Other free clients worth mentioning are AVG, Avast, MalwareBytes, Avira, Sophia + 0 Votes Agree with MSE bethjanick 1 year ago Using Microsoft Security Essentials & agreed with MSE.