1. Security Essentials 1.0.1963 Vista 64-bit Released: 01 Jul 2010 (3 years 9 months ago) Technical Details | Change Log
  2. Security Essentials 1.0.1961 Vista 64-bit Released: 28 Feb 2010 (4 years 1 month ago) Technical Details | Change Log
  3. Security Essentials 1.0.1959 Vista 64-bit Released: 19 Feb 2010 (4 years 2 months ago) Technical Details | Change Log
  4. Security Essentials 1.0.1611 Vista 64-bit Released: 30 Sep 2009 (4 years 6 months ago) Technical Details | Change Log