I don't trust Microsoft when it comes to virus scanning. They've failed far too many virus tests (anyone remember OneCare) to be trusted. G Data, FSecure, and Kaspersky are all great paid apps. Avast! has a free edition that is ranked as "Advanced+" by AV-Comparatives in their semi-annual report: http://www.av-comparatives.org/images/st...port25.pdf
In comparison, Microsoft Essentials only gets an "Advanced" ranking with 96.3% of viruses caught. G Data won again with 99.6%.
In comparison, Microsoft Essentials only gets an "Advanced" ranking with 96.3% of viruses caught. G Data won again with 99.6%.