Microsoft Security Essentials 4.3.216.0

Microsoft Security Essentials is a free* download from Microsoft that is simple to install, easy to use, and always kept up-to-date so you can be assured your PC is protected by the latest technology. 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. Microsoft Security Essentials is efficient and compact. Scans and updates are scheduled to run when the PC is idle and the software works in a way that your PC is still snappy when you’re using it. All this makes Microsoft Security Essentials friendly for all sorts of computers—your old PC, your new PC, your laptop, as well as your little netbook.

Before installing Microsoft Security Essentials, we recommend that you uninstall other antivirus software already running on your PC. Running more than one antivirus program at the same time can potentially cause conflicts that affect PC performance.

*Your PC must run genuine Windows to install Microsoft Security Essentials.

Download: Microsoft Security Essentials 4.3.216.0 | ~ 12 MB (Freeware)
View: MSE Website | Image via Google

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18 Comments

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If I was going free, then I would go with BitDefender free edition. You gotta create an account, but much better than MSE.

Debatable because of how the tests are run (i.e. MSE is designed to run in combination with Windows security updates, which AV testers don't install purposefully to expose the test to more malware) - but Bitdefender free on Win 8 is completely broken - it prevents the OS from booting on a wide range of hardware configurations running Windows 8 x64.

Their solution is to disable the anti-malware service that runs before Windows boots - however that only works until the program updates itself, at which point it prevents Windows 8 from booting whether this service is enabled or not.

The "official" solution is download and pay for one of their software suites instead. They may score high on the tests, but they're a bit of a dodgy company in other regards.

I don't pretend to know how the tests are run, but I do know that I've seen plenty of malware completely disable MSE or run happily along side MSE. Not saying that it couldn't happen with another AV, but It seems to happen more often with MSE.

All of the BD free installs I've done have been on Win 7 machines. Thanks for the heads up on the problems with Windows 8

You should check the details.
http://www.av-test.org/no_cach...s_pi1%5Breport_no%5D=130597
The places it scores bad, Windows Defender/MSE depends on other windows security for protection, like smart screen for URL detection in IE.
And for downloading malware, it also scores bad, also seems to be relying on IE's protection.
They claim default settings, says nothing about just the AV, or entire OS, cause it isn't worth it for MS to use MSE to secure other Windows flaws where they have other techniques for.

I have installed, I did a full scan on my PC. There doesn't seem to be a speed increase of the scanning engine, as it took the same time as 4.3.215.0 to scan.

Well, what can you change on an antivirus? You expect it to detect majority of viruses while providing best performance and stability, I would bet that's what are those updates for.

lmaobox said,
Well, what can you change on an antivirus? You expect it to detect majority of viruses while providing best performance and stability, I would bet that's what are those updates for.

But without a change log you can't be sure...

lmaobox said,
Well, what can you change on an antivirus? You expect it to detect majority of viruses while providing best performance and stability, I would bet that's what are those updates for.

You certainly have big hopes for a 0.0.001 version number change (previous version was 4.3.215.0).

lmaobox said,
Even one simple bugfix can be a huge increase of stability.

Just like dozens of bugfixes can be of no use at all for most users, otherwise changelogs wouldn't exist.