Microsoft Security Essentials 4.0 Released

Our favorite Antivirus utility Microsoft Security Center is now at version 4.0. If you haven’t automatically been updated, make sure to download the current 32 or 64-bit version.

After being in beta stage, our favorite Antivirus utility Microsoft Security Essentials 4.0 was released last week.

According to the Microsoft Download Center:

Microsoft Security Essentials runs quietly and efficiently in the background so you’re free to use your Windows-based PC the way you want—without interruptions or long computer wait times.

MSE 4_0

If you’ve already have it installed, you should be automatically updated. If not, head to the Microsoft Download Center or the Microsoft Security Essentials site.

It will run on XP and above. There is a 64 & 32-bit version available. The new version looks cosmetically the same, but includes extra protection and stability.

Editor Note: Keep in mind Windows Security Essentials doesn’t work on Windows 8. Microsoft has included MSE and Windows Defender.



  1. Ziggy

    May 1, 2012 at 8:35 pm

    Installed via auto updates with no problems what-so-ever. Ran the older version with little performance impact on my laptop, so it’s good to see Microsoft introduce their long awaited newer version.

    I’ve been running version 4 for about a week now, with the same impressive results. Coupled with their msert stablemate, SuperAntisSpyware Free and MalwareBytes Free I’ve run into no problems so far.

    To dodge shonky websites I use WOT,but I’m still not totally sold on that service. To add further protection I sometimes check downloads with Virus Total or Jotti. ClamWin also does a reasonable job. All good things in moderation, I say!

    • Steve Krause

      May 1, 2012 at 10:12 pm


      Starting with Windows 8, Security Essentials will be built right into the OS and it won’t be a separate install any longer. MSE – freeware done right.

Leave a Reply

Your email address will not be published. Required fields are marked *


To Top