Microsoft Security Essentials 4.9.218

Microsoft Security Essentials 4.9.218

Microsoft - 10.6MB - Freeware - out of 163 votes
4 Stars User Rating

Microsoft Security Essentials (MSE) (previously codenamed Morro) is a free antivirus software created by Microsoft that provides protection against viruses, spyware, rootkits, and trojans for Windows XP, Vista, and 7. MSE replaces Windows Live OneCare (a subscription antivirus service) and Windows Defender, which only protects users from adware and spyware. It is geared for home use, unlike Microsoft's upcoming enterprise-oriented product Microsoft Forefront.


Microsoft Security Essentials is a Freeware software in the category Security developed by Microsoft.

It was checked for updates 47,658 times by the users of our client application UpdateStar during the last month.

The latest version of Microsoft Security Essentials is 4.9.218, released on 04/15/2016. It was initially added to our database on 06/25/2009.

Microsoft Security Essentials requires any Windows operating system to be running on the computer it will be installed on. The download file has a size of 10.6MB.

Users of Microsoft Security Essentials gave it a rating of 4 out of 5 stars.

Write a review for Microsoft Security Essentials!

Screenshots (Click to view larger)


47,658 users of UpdateStar had Microsoft Security Essentials installed last month.
Secure and free downloads checked by UpdateStar

Stay up-to-date
with UpdateStar freeware.
Current Newsletter