Microsoft Security Essentials

A newer version of Microsoft Security Essentials is available.

This download is served from an external site


NOTICE: This link will open a connection to a third-party site. CNET cannot ensure the security of software that is hosted on external sites.

Continue to download

Sponsored Products

Or, Learn More About Microsoft Security Essentials
CNET Editors' Rating 4.0 stars


Average User Rating stars

out of 666 user reviews

Back to product review

Full user review

  • 3.0 stars

    "Used to be a big fan"

    October 20, 2012  |   By jscott418


    Minimal resource hog


    Allows some malware past real time scan and full scans are pretty slow


    I used to be a bigger fan of MSE until this last update. Its nowhere near being bloated but its also a bit too lax in its active security real time protection. I had a piece of malware that had taken over my IE 9 browser and was redirecting searches made in URL bar to other sites. I also noticed in Task manager that I had two processes of IE running even though I did not have IE open. When I forced quit those processes they returned after a minute or so. MSE scans even full scan provided nothing. I ended up using a scanner called ComboFix.exe to eventually fix the issues. This is the second or third time a PC running MSE has missed some malware. I have basically gone from being a total supporter of MSE to being skeptical that it can properly protect a PC.

    Reply to this review

    Was this review helpful? (4) (0)

Submit your reply


The posting of advertisements, profanity, or personal attacks is prohibited.
Click here to review our site terms of use.


Add Your Review

Log in or create an account to post a review.
You are logged in as . Please submit your review for Microsoft Security Essentials 4.1
Add Your Review

The posting of advertisements, profanity, or personal attacks is prohibited.
Click here to review our site terms of use.

E-mail this review

Submit cancel

Report offensive content

If you believe this comment is offensive or violates the CNET's Site Terms of Use, you can report it below (this will not automatically remove the comment). Once reported, our staff will be notified and the comment will be reviewed.

Select type of offense:

Offensive: Sexually explicit or offensive language
Spam: Advertisements or commercial links
Disruptive posting: Flaming or offending other users
Illegal activities: Promote cracked software, or other illegal content
Submit cancel




If you think this is an error, please contact CNET TechTracker Support for further assistance.


Running Request



Smart Install Software


CNET TechTracker will now automatically install software without requiring further action by you. (Note: This feature automatically accepts associated EULAs and third party applications on your behalf.)

You have selected the following software to Smart Install:

CNET TechTracker will attempt to install this software without interrupting you again. If an application requires manual installation, CNET TechTracker will download the installer and prompt you to take further action.

Proceed with Smart Install?

Confirm Standard Install Cancel