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Microsoft security essentials runs quietly and efficiently in the background so you re free to use your windows based pc the way you want without interruptions or long computer wait times.
However we no longer provide program updates new features bug fixes or support for windows xp.
Comodo security software breezed through the rigorous evaluation procedure which includes 110 different tests to determine the best free antivirus software for windows and gives an overall antivirus protection score based on the performance on each of these tests achieved by the antivirus software.