Microsoft Security Essentials 4.1.0522.0

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.

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 4.1.0522.0 | ~ 12 MB (Freeware)
View: MSE Website

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according to AV test .org MSE has risen in the ranks since it was last tested

detection rates have never been MSE's strong point but cleaning up the mess is as is usability

now if they could just manage a 4.0 or 5 on the detection tests it's be almost perfect

I like MSE and used it for almost more than 8-10 months. However I noticed specious behavior of my laptop and I decided to try other antivirus softwares too. I tried Bullguard first then AVG and then Symentec. In first entire system scan bullguard identified many files that had viruses in it! I was quite surprised and was wondering why MSE never identified them? Also Buillguard identified many tracking cookies. Allthough Bullguard was a trial version of 30 days it removed issues it found.
Inspite of this I still recommend MSE to the people who dont install Antivirus at all! Or who wants free antivirus. It is better to have something than nothing.

Most lighter a antivirus is, the most I like, and if it's free it's better. I dont want to slow down performance and startup time of my pc. Microsoft is not the best, now than I tried "cloud" antivirus, I don't want to go back.

-Panda Cloud Antivirus
-Immunet
-Kingsoft Antivirus
-Webroot SecureAnywhere
-Fortinet Free

Have used Norton, Kaspersky, Avira, Panda, MSE and various others over many years - but my system has been trouble-free since I started using AVG two years ago. Now I wouldn't use anything else.

Kingsoft caused many crashes and blue screens on the PC's I installed it on. MSE I have used and is OK but I use NIS 2012 and it works well for me

So this is what Windows update forced me to reboot...

I have to give Microsoft credit for still not losing control of the program, like NOT cluttering it with too many features and such. It's still simple and effective. I love it!

jupe said,

Have you actually ever had it flag anything?

I have. Granted it was a false positive, but it did flag it. And I don't go to "those" kinds of site, so my chance of infection is decreased 10 fold.

When you install it for first time, it asks you if you want to join for sending your data etc, while it's offering 2 options, "I want to join bla bla" and "I don't want to join". If you press I don't want to join, it still enables the Basic Membership... Sneaky *******. Their method is completely misleading.

You've to go at Settings -> MAPS to disable it again.

PC EliTiST said,
When you install it for first time, it asks you if you want to join for sending your data etc ... If you press I don't want to join, it still enables the Basic Membership ... Their method is completely misleading.
The question during installation is about collecting usability information regarding to the product itself (what features you use and how you use them) whereas MAPS is to do with detected infections. These two features are unrelated.

Every antivirus product uploads infection details by default. Sensitive user information is not included; the most sensitive it can get is including your user folder name if the malware was located there--and MSE doesn't share that unless you set MAPS to advanced membership.

Thanks installed new version .. ver. no. changed to 4.1.522.0 after 1st update.
improved performance ... no change in UI.
Doesn't matter much .. 1st priority - Security

I just uninstalled it today, switched to avira free. I've seen WAY too many people's computers still get infected by running MSE, but after placing avira free on their machines, I have yet to see a machine come back due to infection. I mean, if you like MSE, then by all means, more power to you, but for me, I switched.

obiwankenobi said,
I just uninstalled it today, switched to avira free. I've seen WAY too many people's computers still get infected by running MSE, but after placing avira free on their machines, I have yet to see a machine come back due to infection. I mean, if you like MSE, then by all means, more power to you, but for me, I switched.

No av is perfect.

obiwankenobi said,
I just uninstalled it today, switched to avira free. I've seen WAY too many people's computers still get infected by running MSE, but after placing avira free on their machines, I have yet to see a machine come back due to infection. I mean, if you like MSE, then by all means, more power to you, but for me, I switched.

Just had to clean a machine with Avira full on. Stupid Plantinum Security Pro rubbish (sig changed several times per day). Like said all AV`s miss stuff, it`s a 20 year technology trying to deal with modern day threats and failing big time

obiwankenobi said,
I just uninstalled it today, switched to avira free. I've seen WAY too many people's computers still get infected by running MSE, but after placing avira free on their machines, I have yet to see a machine come back due to infection. I mean, if you like MSE, then by all means, more power to you, but for me, I switched.

I agree. While every AV can still get infected it seems MSE still gets infected more than most.

warwagon said,

I agree. While every AV can still get infected it seems MSE still gets infected more than most.

Really now? Since I started working for this computer as an IT Technician we've had a lot of computers come in. Most either have McAfee or Norton, some Kaspersky, others AVG *shudders* and I think like 2 had MSE. All other MSE computers that have come in for a checkup came up clean.

Keep in mind that a level of common sense needs to be put to use on the consumer's end as well. You wouldn't believe the amount of computers that have "System Checkup.exe" or some crap like that before they bring it in to us. Just costs them more in the end.