1. Security Essentials 2.1.1116 Vista Released: 29 Jun 2011 (4 years 1 month ago) Technical Details | Change Log
  2. Security Essentials 2.0.657 Vista Released: 17 Dec 2010 (4 years 8 months ago) Technical Details | Change Log
  3. Security Essentials 1.0.2498 Vista Released: 08 Oct 2010 (4 years 10 months ago) Technical Details | Change Log
  4. Security Essentials 1.0.1963 Vista Released: 01 Jul 2010 (5 years 1 month ago) Technical Details | Change Log
  5. Security Essentials 1.0.1961 Vista Released: 28 Feb 2010 (5 years 5 months ago) Technical Details | Change Log
  6. Security Essentials 1.0.1959 Vista Released: 19 Feb 2010 (5 years 6 months ago) Technical Details | Change Log
  7. Security Essentials 1.0.1611 Vista Released: 30 Sep 2009 (5 years 10 months ago) Technical Details | Change Log