
I am glad that Microsoft is confronting this issue, since running multiple antivirus applications is terrible for performance. The trickiest moment comes when the installer recommends that you “remove other antivirus and antispyware programs”: Installation was smooth, guided by a simple wizard with a castle logo: I installed it on my Windows 7 64-bit desktop PC. Businesses are meant to use Forefront Client Security, though “home-based small businesses” are specifically permitted in the license agreement.


It runs on XP 32-bit, or Vista or Windows 7 32-bit or 64-bit, the only technical restriction being that Windows must validate as “genuine”. Microsoft has released its free Security Essentials software, antivirus and antispyware protection aimed at home users.
