Microsoft Security Essentials for Windows XP/Vista/7 (64-bit) v18.104.22.168
Vista / Win7 / WinXP
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1License and operating system information is based on latest version of the software.
but for free virus protection is Microsoft Security Essentials # 2 Avast! Free Antivirus 5 is # 1
Installed finally by using IE...good so far, regular updates and caught one trojan a week ago which was easy to quarantine and remove...