Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software. It 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. It’s easy to tell if your PC is secure — when you’re green, you’re good. It’s that simple.
Microsoft Security Essentials runs quietly and efficiently in the background so that you are free to use your Windows-based PC the way you want—without interruptions or long computer wait times.
Reviewing 4.2.223.0 (Feb 21, 2013)
MSE today lags behind almost every other AV in virus detection, as mentioned by some of the guys here. It also requires manual updation, as the automatic update never works. Microsoft claims that the AV tests are not realistic, as the tests use sample viruses, which have infected only a very small fraction of the total number of PCs running Windows. So it is their word against yours. Apparently MS is on a self destructive path, as you can see from the quality of their AV product and the terms they are imposing on potential users of MS office today.
My personal suggestion is to use AVG or Avast if you need free protection, and have a fast enough PC/laptop with Core i3 or better. I still use MSE as my primary AV, as I find substantial slowing down of my old laptop with either of the other AVs. I also have Comodo firewall installed, with Defence+ turned ON. This gives me additional protection of sand-boxing, as well as a secondary AV (Comodo AV detection is built in), and there has been no infection in the last 4 years that I am using my Pentium based laptop with Win7. In addition I run Malwarebytes scan every week to double check on these two. Three stars only because it does not leave my laptop panting for breath.
Reviewing 4.2.223.0 (Feb 20, 2013)
I wasn't sure whether to use this or not so I gave it a test drive on one of my laptops and I must say I was very impressed. I experienced 0 slow downs on the laptop. I can only assume it does what it's supposed to do because I don't usually get infections on my PC's. So far so good, it seems to be very seamless.
Reviewing 4.1.0522.0 (Sep 27, 2012)
@niknetpc - At no stretch of the imagination could MSE said to be 'still the best' as until recently it's detection rates were abysmal.
MSE is better than it was but, (though it had lots of room to improve)
slows a (this) PC down & still lags regarding detection compared to the (free) competition.
Personally I wouldn't use MSE as my primary AV solution as I don't think it's good enough, though it seems others disagree ~
Reviewing 4.1.0522.0 (Sep 26, 2012)
this is not really good..... have you looked at the expert malware testing sites....
Microsoft Security is near the bottom..... 59% out of 100
Reviewing 4.1.0522.0 (Sep 26, 2012)
Still the best full featured free antivirus with no ads asking to buy full version. Setup and forget, never slow PC. Some guys just affiliate nod32 and other paid AV etc or just need upgrade their ten years old PC :)
Reviewing 4.1.0522.0 (Sep 26, 2012)
Been testing this software for a long time and it has NEVER slowed down my PC.
Best there is for free!
Reviewing 4.1.204.0 Pre-Release (Jun 27, 2012)
Slows the computer down considerably. I mean it REALLY slows the computer down. Somewhat effective on virus protection, but then again so are a lot of others that don't slow the machine down like this one does.
If you want free, get Comodo. If you can handle the $35, get Eset NOD32
Reviewing 4.1.204.0 Pre-Release (Jun 27, 2012)
I'll stick with Avast for now. In the future I may switch to this.
Reviewing 4.1.204.0 Pre-Release (Jun 27, 2012)
I've never been impressed by this AV for years, but it is without doubt getting much better & now worth running. Several AV test sites show better detection rates. With the resources of MS & their intimate knowledge of Windows it ought to be the best though.
If you want a the lightest AV on your memory footprint Webroot SecureAnywhere is very good very fast & getting better, full cloud is the way forward.
Reviewing 4.0.1540.0 Pre-Release (Jun 4, 2012)
they got 80 %
see
http://www.virusbtn.com/...atest_comparative/index
Reviewing 4.0.1526 (Apr 26, 2012)
Very effective and light on resources. Doesnot show too much details which could be good or bad depending on the scenario. I dont need much details so not capturing or displaying adds to the speeds which I think is good.
Reviewing 4.0.1526 (Apr 25, 2012)
@-Lord- Yes it slows down the computer (a bit), but do you know any AV product that doesn't?
Personally, although I never liked AV programs I find MSE extremely light in resource usage; lighter than anything else ever tried before!
Reviewing 4.0.1526 (Apr 25, 2012)
Slows down every single computer I've ever installed this on. Doesn't matter what version or if it's 32 or 64 bit. Would be nice, but it's horrible on system resources and makes using a computer a pretty bad experience.
Reviewing 4.0.1526 (Apr 25, 2012)
I wish I could rate this properly, but when I tried to install it crashed my system during the security update process,requiring a system restore to recover.
Reviewing 4.0.1526 (Apr 25, 2012)
Been using this on couple machines for a almost a year!
No problems at all, easy to handle and non intrusive!
True 64-bits version!
Reviewing 4.0.1526 (Apr 24, 2012)
Easily one of the best security systems available and does a better job than many of the paid security suites on the market.
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