Article ID: 890830 - View products that this article applies to.
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The Microsoft Windows Malicious Software Removal Tool helps remove malicious software from your computers that are running Windows 8, Windows Server 2012, Windows 7, Windows Vista, Windows Server 2003, Windows Server 2008, or Windows XP.

Microsoft releases a new version of the Microsoft Malicious Software Removal Tool every month. After you download the tool, the tool runs one time to check your computer for infection by specific prevalent malicious software (including Blaster, Sasser, and Mydoom) and helps remove any infection it finds.

This article contains information about how the tool differs from an antivirus product, how you can download and run the tool, and what happens when the tool finds malicious software on your computer. The advanced user section includes information for the IT administrator and additional information about how to manage and run the Malicious Software Removal Tool.

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Note In compliance with the Microsoft Support Lifecycle policy, the Windows Malicious Software Removal Tool (MSRT) will no longer be offered to or supported on Windows 2000-based systems after July 13, 2010. This date coincides with the end of the Extended Support phase for Windows 2000. For more information about the Support Lifecycle policy, go to the Microsoft Support Lifecycle website.

How the Microsoft Malicious Software Removal Tool differs from an antivirus product

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How to download and run the Microsoft Malicious Software Removal Tool

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When the Malicious Software Removal Tool detects malicious software

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How to remove the Malicious Software Removal Tool

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How to receive support

Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center
Security solutions for IT professionals: TechNet Security Troubleshooting and Support
Help installing updates: Support for Microsoft Update
Local support according to your country: International Support.

More information for advanced users

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Article ID: 890830 - Last Review: April 8, 2014 - Revision: 134.0
Applies to
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Home Edition
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Ultimate
  • Microsoft Windows Server 2003, Standard Edition (32-bit x86)
  • Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
  • Windows Server 2008 Standard
  • Windows Server 2008 Enterprise
  • Windows 7 Enterprise
  • Windows 7 Enterprise N
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Home Premium N
  • Windows 7 Professional
  • Windows 7 Professional N
  • Windows 7 Starter
  • Windows 7 Starter N
  • Windows 7 Ultimate
  • Windows 7 Ultimate N
  • Windows 8
  • Windows 8 Enterprise
  • Windows 8 Pro
  • Windows Server 2012 Datacenter
  • Windows Server 2012 Essentials
  • Windows Server 2012 Foundation
  • Windows Server 2012 Standard
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