Helps guard your PC against viruses, spyware, and other malicious software
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Microsoft Security Essentials 4.10.209 (64-bit)
Date released: 30 Nov 2016 (one year ago)
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Microsoft Security Essentials 4.9.0218 (64-bit)
Date released: 14 Apr 2016 (3 years ago)
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Microsoft Security Essentials 4.8.204 (64-bit)
Date released: 13 May 2015 (3 years ago)
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Microsoft Security Essentials 4.7.205 (64-bit)
Date released: 12 Feb 2015 (4 years ago)
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Microsoft Security Essentials 4.6.305 (64-bit)
Date released: 11 Sep 2014 (4 years ago)
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Microsoft Security Essentials 4.5.216 (64-bit)
Date released: 10 Apr 2014 (5 years ago)
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Microsoft Security Essentials 4.4.304 (64-bit)
Date released: 12 Nov 2013 (5 years ago)
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Microsoft Security Essentials 4.3.219 (64-bit)
Date released: 20 Oct 2013 (5 years ago)
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Microsoft Security Essentials 4.3.216 (64-bit)
Date released: 25 Jul 2013 (5 years ago)
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Microsoft Security Essentials 4.2.223 (64-bit)
Date released: 22 Feb 2013 (6 years ago)
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Microsoft Security Essentials 4.10.209 (32-bit)- Microsoft Security Essentials 4.10.209 (64-bit)
- Microsoft Security Essentials 4.4.304 (XP)
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