Microsoft Security Essential – Free Virus Remover Tool from Microsoft Team

Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software.

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. 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. via Microsoft

I know you are already using security software, but I think Microsoft Security Essentials might be a good option for your personal computer or laptop. Because firstly this is from Microsoft team and most of all free for all those who are using Genuine Windows OS.

Microsoft Security Essentials is available for Windows XP 32-bit (8.61MB), Windows Vista/7 32-bit (4.28MB), and Windows Vista/7 64-bit (4.71MB). Microsoft warns that MSE should not be installed with any other security software. It builds upon Windows Defender by offering both real-time protection and on-demand scanning for all types of malware.

System Requirements

Operating System: Genuine Windows XP (Service Pack 2 or Service Pack 3); Windows Vista (Gold, Service Pack 1, or Service Pack 2); Windows 7

  • For Windows XP, a PC with a CPU clock speed of 500 MHz or higher, and 256 MB RAM or higher.
  • For Windows Vista and Windows 7, a PC with a CPU clock speed of 1.0 GHz or higher, and 1 GB RAM or higher.
  • VGA display of 800 × 600 or higher.
  • 140 MB of available hard disk space.
  • An Internet connection is required for installation and to download the latest virus and spyware definitions for Microsoft Security Essentials.
  • Internet Browser:
    • Windows Internet Explorer 6.0 or later.
    • Mozilla Firefox 2.0 or later.


Installation is very quick, let us see the Installation procedure step-by-step. Welcome screen will come when you install it for the first time, click next

Accept the MSE License Agreement to proceed further with the installation

As I told you earlier, MSE is only for Genuine Windows OS. So this step validate that you are using Genuine OS or not. Click Validate to check, if your Windows is validated you will be moved to next step, otherwise installation will fail.

After Validation of your OS, click on Install button to proceed further.

Once, Installation is complete, MSE would notify you to scan computer, I would recommend it to do that.

Now, MSE installation is complete and it will automatically re-directed to Virus updates and definitions page.

How MSE works

To perform a System Scan, you can select from any one of the three options, Quick, Full, or Custom. I went for the Custom Scan from which you can choose the exact drive or destination that you would like to scan and click OK.

This is how hone windows looks like when a threat is detected.

It seems like a Trojan is there in my computer, which my old virus removal tool was unable to detect. Now to clean this Trojan, click on Clean Computer button.

Now my computer is safe from Trojan, thanks to MSE.


Microsoft Security Essentials is easy to use and the best thing is it doesn’t take too much of your computer’s memory. But I am impressed with MSE more because as you see that it detected and removed a Trojan which my earlier Software Remover Tool was unable to detect.

Also it’s totally free, no registrations, trial versions, or license renewals required. Automatic updates work really fine and all the functions are activated with a single-click. Based on all above facts, I would recommend you to give this product a shot because it’s from the Microsoft Team and also awarded best malware removal from AV-Comparatives.


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  • Jal

    Great light weight AV from Microsoft. And the best part is, it keeps getting considerably better with every update.
    .-= Jal´s last blog ..Microsoft may bring automatic device association between computers =-.

    • Yogesh Mankani

      Thanks bro for heads up. It’s really working fine for me too.

  • Sukhjit Singh

    I used it 2 months back. Wasn’t impressed at all.

    First the updates gave me headache. Every time the updates used to fail.
    And second it doesn’t look like its working. I didn’t knew I had viruses on my PC till I installed Kaspersky after uninstalling it.

    • Yogesh Mankani

      Don’t know bro, but it working fine for me. Automatic updates are really great, it’s getting better and better for me with every update. And the strange thing is it detected and deleted the virus which Kaspersky was not able to detect.

      I think some luck problem is there, lol 🙂

      • Sukhjit

        LOL, My luck is always bad…. 🙁
        Will use Avast now. I switch anti viruses every week. 🙂

    • qwertyman

      Sukhjit Singh, this antivirus is superb and if u dont know how to use it, better dont use,,, it does not give people headache.. u should be grateful it is FREE!! burn your PC instead.

  • Kevin M.

    Thanks for sharing this! I look forward to trying it out!
    .-= Kevin M.´s last blog ..Silly Saturday – The "Man Cold" =-.

    • Yogesh Mankani

      That’s cool, do share your views with us after using it.

  • Pubudu Kodikara

    I have used this cool tool for some time bro 😀 but i think Avast offers more features than this 😀 you must try it out bro!
    .-= Pubudu Kodikara´s last blog ..Ubuntu : How to Change the Profile Picture and Password =-.

    • Yogesh Mankani

      Thanks for sharing mate, even I had heard lot of buzz about Avast, so surely give it a try after a while for sure 🙂

    • Tom

      Believe it or not, the same features are in this suite, they are just in the background. I have never used a better Antivirus Suite and I highly recommend it. I have 5 computers and I run MSE on every one of them. They are very stable and I have never had anything get past it. It finds trojans and tracking cookies quite reliably and my internet speed is always stable.

  • The file size for Windows Vista 64 bit is not 4.7 mb, but 7 mb. No big deal, just For Some band-width concious’s info

    Thanks for the info, getting it now 🙂
    .-= Arun Basil Lal´s last blog ..Fantastico Installer and WordPress Privacy. Watch it =-.

    • Yogesh Mankani

      Thanks for pointing out Arun. Will update it soon 🙂

  • And to me Microsoft Security Essential does not inspire trust, but I think that for the sake of interest it is necessary to try.
    .-= alexander128´s last blog ..ATI Catalyst Drivers =-.

    • Yogesh Mankani

      Well, but MSE build already trust for me because already detect 2 or more viruses and automatic updates working fine for me. I will recommend you to try it once and do share your views after some days.

  • NavaPavan

    Thanks for sharing the security info.

    • Yogesh Mankani

      It’s my pleasure dude 🙂

  • Charleston

    Nice info Yogesh. Thanks for the time to put in the installation images and guides.

    • Yogesh Mankani

      My pleasure mate and thanks for the heads up 🙂

  • Kissie

    Bookmarking this one!
    .-= Kissie´s last blog ..ANNOUNCEMENT – NEW BLOGSITE! =-.

  • HaliburtonZeke

    It works and it’s free. What’s not to like?

  • Derek

    Having problems updating. Can you help please

  • Hitesh Manglani

    Hey Yogesh,

    I had downloaded MSE yesterday for my Windows 7/64 bit OS(the file name was
    but after installing the first update did not complete
    i was dissappointed and started searching for alternatives like Avast and Avira and reading content comparing these.
    Today morning read ur post and was keen on trying to install MSE once again, i used the link on this blog but the file name was
    and after using this one the MSE updated and started scanning my computer. What a relief, thnx bro 🙂

  • Hitesh Manglani

    Oh on second thoughts one more reason could be that i had not uninstalled my trial subscription of McAfee Anti Virus

  • Vans

    I’ve heard the MSE from my friend and I had installed, but when the update process often fails. Finally I am back to using AVG

  • never used/not using any anti-virus software 😕
    even when i was on XP. sometimes used avg for some downloaded files but the rest were none

    • Tom

      Wow! No Antivirus Software? How often do you need to replace your hard drive? The dumbest thing you can do is expose yourself to hackers. Are you not even remotely educated as to how people steal your personal and financial information? I think you are foolish to think that operating an unprotected computer is a good thing. Even MACs are becoming susceptible to viruses.

  • Gaz

    I’m gonna give MSE a chance….think I used it a while back on my lappy, so am gonna give it a go on ma desktop…I’m sure I had no probs with it, and found it simple to use. At the moment I am using Norton Antivirus 2010, and I’m not overly impressed, I used Norton Internet Security 2008, when I bought my PC, but thats ran out…so heres hopin kids….I’ll keep ya’s posted!!!!!!

    • Tom


      I promise you, you won’t be disappointed. It’s the only Security software I use and nothing gets past it. I have had Norton Security Suite fail on me several times and it is way to heavy on the system resources. Keep using MSE. You’ll be pleasantly surprised at how stable your system stays. Great software developed by the makers of Windows. If anyone knows how to keep a computer virus free, it should be Microsoft.

  • I had OneCare anti virus, was doing fine, then it was getting close to renew, and they are not renewing ANY (going out of business or something).
    They recommended MSE. Make sure everyone knows this: You CANNOT run more than ONE anti virus program on your PC. It does NOT give you MORE protection – it can actually work adversely. OK so I removed One Care, then download MSE. It keeps telling me to turn it ON; warns not protected. I click on it, and there’s the BIG RED BUTTON which I click on to TURN ON MSE. Doesn’t work. Try it 12 more times. Doesn’t work. So I remove the MSE program, and HERE AM I looking to either RE-install it, or see if there is a BETTER option. I Fear clicking onto a site that will GIVE my PC a virus or worse. ANY SUGGESTIONS? Thanks.

  • Sammy

    Hey man..This is a superb anti virus program..!!
    well…some people dont have a VALIDATED copy of windows so can you also post some ways to install it in pirated editions of WINDOWS..??
    thanks once again.!

  • John

    By not using the program with “any other security software” does this mean other antivirus software or does it also include other antipsyware software such as super anti spyware, malwarebytes etc..? Please respond to my email

  • Ivan

    It’s very slow almost hand up my computer when scanning. It delete some of my instalation programs. After 2 days I removed it. It’s free but other free AV are way better then this try of free AV.

  • hattaz

    thanks dude..

    finally installed MSE on my laptop.

  • rijans

    I am also using MSE. But the problem is, it has very less functionality. I think kaspersky is better though it’s not free.


    iam finally installed MSE in my pc iam hop that its better than others

  • Wow, a free software from Microsoft, this must be new, thanks for sharing.

  • kendra

    i just in stalled mircosoft security essentials going give it a try

  • Mohsin Butt

    I have just installed lets whats its result should be taken, anyhow i just uninstalled Kasper due to system slow deown and hang problem.

  • Justin

    I downloaded but when I go to open to install, I don’t know what to open with? nothing is working.. please help!!

    • David

      Justin, do you get a validation window? I think you just double click the file name. I am guessing it is a .exe. File
      Do you have a valid copy of windows? That seems to be a problem.
      I use mainly Mac so just guessing