Malicious Software Removal Tool (MSRT) from Microsoft – FAQ

Like the Microsoft Security Essentials, Windows Defender, Windows Defender Offline ToolMicrosoft Safety Scanner and Enhanced Mitigation Experience Toolkit the Malicious Software Removal Tool is yet another one of the many free security tools from Microsoft for Windows users.

Malicious Software Removal Tool (MSRT)

The Microsoft Windows Malicious Software Removal Tool helps remove specific, prevalent malicious software from computers that are running Windows 10, Windows 8, Windows 7, Windows Vista & Windows Server.

The Microsoft Malicious Software Removal Tool does not replace an antivirus product. It is strictly a post-infection removal tool.

KB890830 lists the three key areas in which the tool differs from an antivirus application.

  • The tool removes malicious software from an already-infected computer. Antivirus products block malicious software from running on a computer. It is significantly more desirable to block malicious software from running on a computer than to remove it after infection.
  • The tool removes only specific prevalent malicious software. Specific prevalent malicious software is a small subset of all the malicious software that exists today.
  • The tool focuses on the detection and removal of active malicious software. Active malicious software is malicious software that is currently running on the computer. The tool cannot remove malicious software that is not running. However, an antivirus product can perform this task.

When the detection and removal process is complete, the tool displays a report describing the outcome, including which, if any, malicious software was detected and removed.

Microsoft releases an updated version of this tool on the second Tuesday of each month, as needed to respond to security incidents.  The version of the tool delivered by Windows Update runs in the background and then reports if an infection is found.

The Microsoft Windows Malicious Software Removal Tool checks computers for infections by specific, prevalent malicious software, including Blaster, Sasser, and Mydoom—and helps remove any infection found.

Once MSRT has been downloaded to your computer, it will run the scan automatically. If any infections are found, you will be notified right away and asked to click on the notification to complete the removal process.’

Malicious Software Removal Tool

If you need more information you may click on the  link.

malicious software removal tool 10

To run it on-demand you can download the Microsoft Malicious Software Removal Tool for Windows 10/8.1/8/7/Vista from Microsoft.

If you plan to deploy the Microsoft Windows Malicious Software Removal Tool in an enterprise environment, check KB891716.

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Anand Khanse is the Admin of, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP. 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.


  1. sigma

    Learn how to use Windows Malicious Software Removal Tool here:

  2. Shivakumar Haravi

    Any one can share me the Malicious Software Removal Tool for Windows phone 7

  3. There is no such tool for WP7. In any case you dont need one as Windows Phone 7 is malware-free …

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