Microsoft Security Essentials (MSE) – FAQ

I have compiled a list of answers to some frequently asked questions which a Microsoft Security Essentials user may have :

MSE logo

Microsoft Security Essentials

Q: What is Microsoft Security Essentials (MSE) exactly?
A: MSE is Microsoft’s free antivirus offering to users of genuine Windows 7, Vista & XP users. It is specifically designed for individual consumer PC use using the smallest resource footprint possible to provide complete anti-malware protection and will include a new protection technology, as part of the Microsoft anti-malware engine, called Dynamic Signature Service (DSS).

Q: Where can I download Microsoft Security Essentials (MSE) from ?
A: You can download it from Microsoft. It is now wef around 18th Oct 2010, also being offered via Windows Update.

Q: How is MSE different from Windows Defender?
A: Windows Defender detects and removes spyware only. MSE is designed to protect against the full breadth of malicious software, and specifically also prevents viruses, rootkits, worms, trojans, and other malicious software from infecting your machine. MSE is a super set of Windows Defender.

Q: Is MSE designed to replace Windows Defender and the Windows firewall?
A: No but if you are running Microsoft Security Essentials, you do not need to run Windows Defender.  MSE will disable Windows Defender in order to manage the PC’s real-time protection. You need not disable Windows Defender manually.

MSE does not include a firewall. But it will work in tandem with your Windows firewall to protect your PC.

Q: How do I submit Bug Report to Microsoft for MSE?
A: Bug reports can be submitted via the Microsoft Connect web site for Microsoft Security Essentials.

Q: Do I need to remove other antivirus applications before installing MSE?
A: Yes you shoul remove your other “memory resident” antivirus applications, before you install Microsoft Security Essentials. A Memory Resident antivirus application is an application that starts when you turn on the computer, and stays started until you turn off the computer.

Q: How can I create a Security Essentials Support log file?
A: MSE includes a small utility that allows you to create a support log.

In Windows 7 / Vista , open cmd as an Administrator.
Type cd %programfiles%\Microsoft Security Essentials.
Type MpCmdRun.exe –getfiles.
The application will run for 5 minutes and create a zipped file called
This will be saved automatically to %ProgramData%\Microsoft\Microsoft Antimalware\Support\ folder.
Attach the zipped file to your bug report.

Q: Where can I get additional help for MSE?
A: You can get support on MSE at the Microsoft MSE Forum. You are also most welcome to visit our Forum.

Q: How can I submit a case online or report a possible virus or spyware problem to Microsoft?
A: You can do so at the following links:

Q: What are the minimum system requirements for installing MSE?
A: A CPU with clock speed of 1.0 GHz, 1 GB RAM, VGA 800×600, Disk space 140 MB.

Q: When will its RTM and be available for me?
A: MSE RTM is scheduled for H2 2009 in 10 languages and in the following 20 markets: Australia, Austria, Belgium, Brazil, Canada, China, France, Germany, Ireland, Israel, Italy, Japan, Mexico, Netherlands, New Zealand, Singapore, Spain, Switzerland, United Kingdom, and the United States.

For more help, how-to and support related questions, go here.

MSE final version is now available for download to all. Go here for details.

Posted by on , in Category Security with Tags
Anand Khanse aka HappyAndyK is an end-user Windows enthusiast, a Microsoft MVP in Windows, since 2006, and the Admin of Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.
  • Pratap Avasthi

    “MSE is designed to protect against the full breadth of malicious software, and specifically does not prevent viruses, worms, Trojans, and other malicious software from infecting your machine” How then is computer protected from viruses? Should I reinstall antivirus like Avast after installing MSE? Thanks

  • Windows Club

    Oops, that was a typo. Corrected.
    MSE will protect against all malware.

  • Fauzi

    I want to tell you one question. Why microsoft Security Essential doesn’t make a copy of infected data to the quarantine? When scanning, or real time protection detect a malware, only some virus can copy to the quarantine. I hope, microsoft will fix this problem, because if it is an important file, it will be loss heartlessly. Thanks..

  • Omi Azad

    Well, all anti virus application manufacturer has this option of submitting virus to their lab, so that they can create a protection and patch it with the next definition update. What about this one?

  • Windows Club

    Pls see above: How can I submit a case online or report a possible virus or spyware problem to Microsoft?

  • Wahyu

    I got problem when using MSE with Windows Firewall.
    I cant connect to internet via wifi when activate both of them(i turn off Windows Firewall when opening this page).
    Can you help me ?

  • amoudy

    is it possible to get an updated version of MSE which contains a section for editing connection preferences? the networks i use have proxies and cant download the definition file since such files are blocked from downloading.

  • bookworm3

    I can’t connect with internet explorer since installing MSE, also cant ger updates. Can any one help me?

  • Windows Club

    If you forward your question to I’m sure someone will help you out.

  • Channoway

    There is two methods to reset windows login password:
    Methods 1: Use the password reset disk to recover the Windows password, by this methods, you need create a Windows password reset disk before you have lost or forgotten your Windows admin password.

    Method 2: Using Windows Password Recovery software to recover Windows password
    As an easy method to recover the forgot Windows password, there are only four steps as follow:
    Step1: Download Anmosoft Windows Password Reset V8.0 and install it.
    Step2: Burn the ISO image file onto a blank CD/DVD or USB.
    Step3: Boot up your Windows PC by the bootable burned CD/DVD or USB in minutes.
    Step4: Remove the forgotten Windows password on the operation interface and logon PC without password.

  • Mitchryder1953

    How come it shuts off by itself, and you have to reboot it a few times to get it to start up again

  • WJones

    Please forgive the frustration. Why the hell can’t I get this simple question answered?: I downloaded MSE, now how do I run it ?

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