Now available in selected countries.

Free Microsoft Antivirus Software Next Week
New York Times, United States
It will make the test-phase service, now officially named “Microsoft Security Essentials,” available for download onto properly licensed Windows PC in Brazil, Israel and the United States running Windows XP, Windows Vista and Windows 7 operating ...
Leak: Free Windows 7 Morro (Microsoft Security Essentials 1.0) Softpedia
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