Available on Windows

The 5th most popular anti-virus tool on Windows

A free, simple and lightweight Anti-Virus and Anti-Malware tool developed by Microsoft. It is the successor to Windows Live OneCare.

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  • Chris Charabaruk fanatic
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    Lighter, faster, all around more efficient than Clamwin, which is what I've used up until now. All that on a six year old computer. I think I'm in love.

  • stuffiwrote devotee
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    I uninstalled Clamwin and now just use this and Comodo. I can't believe MSSE is actually this good, if a bit of a resource hog.

  • Mazhar Hashmi expert

    It's simple, quite, lightweight, worthy and free!

  • encarnegin expert
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    Por fin Microsoft saca un anti virus sencillo, y que se integgra perfectamente con el sistema. No consume mucho.

  • Beat-m fanatic
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    Шустрый, достаточно удобный и бесплатный.

  • cyberjack devotee
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    Free, small footprint and so far it's working fine.

  • tomsmith expert
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    Completely free - no upsell from Microsoft. One of the best detective AV solutions avaliable from personal experience. Very lightweight, almost no system performance degredation at all.

    Well done Microsoft for once!

  • VileShadow fanatic
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    Completely free, Clean tab interface, Excellent Real-time protection, Excellent detection definitions, Updates regularly via Windows Update, Works excellent with a very small memory footprint. Only basic features e.g Anti-Malware and Real-time, no network control manager or other forms of protection from malicious sites and scam sites. But a great Anti-Malware utility for any PC with XP, Vista or Win 7 and for even the most novice users. I have used and tested it and it is a very strong Anti-Malware utility I recommend it to everyone and so far not complaints just really positive feedback. For once Microsoft you got yourself a good program!

  • swapnme expert
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    i must say its one the best antivirus solution available... kudos Microsoft...

  • Bas de Jong overlord

    antivirus from microsoft stays out of here. I keep it with avast.

  • P95 expert
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    Better than I expected! Easy to use, very fast scans. Good job Microsoft!

  • James devotee

    nice, better preformance than i expected

  • coldReactive overlord

    Oh no you don't, you're going to play... POLE POSITION!!!!!!!!

    Microsoft and AV Software? Not in my world.

  • Sudeep James overlord

    sooo kooool..

  • Robomaster expert
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    Switched from Avast! to MSE, never looked back. The first usable piece of software from Microsoft. Since Microsoft's monopoly was challenged, they actually have to start workin'

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Website: microsoft.com/security...
Developer: Microsoft Corporation
License: Free
Version: 1.0.2140.0
Rating: Features:
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Overall:
Usage: 2 weeks, 3 days, 23 hours, 42 minutes and 8 seconds
Usage since: 17 June 2009
Share:

Popularity over the last 30 days (?)

Microsoft Sec... vs.

Rank: #522

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