Download Microsoft Security Essentials for Windows XP/Vista/7 (64-bit) v4.5.216.0 (freeware) - After

Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software. ... 11 Apr 2014 Microsoft Security Essentials for Windows XP/Vista/7 (64-bit) v4.5.216.0 (Latest stable versio

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