The Microsoft Windows Malicious Software Removal Tool checks computers running Windows 7, Windows Vista, Windows XP, Windows 2000, and Windows Server 2003 for infections by specific, prevalent malicious software—including Blaster, Sasser, and Mydoom—and helps remove any infection found.
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, and as needed to respond to security incidents. The tool is available from Microsoft Update, Windows Update and the Microsoft Download Center.
Note The version of the tool delivered by Microsoft Update and Windows Update runs in the background and then reports if an infection is found. To run this tool more than once a month, use the version on this Web page or install the version that is available in the Download Center.
Because computers can appear to function normally when infected, it's a good idea to run this tool regularly even if your computer seems to be fine. You should also use up-to-date antivirus software to help protect your computer from other malicious software.
To download the latest version of this tool, visit the Microsoft Download Center.
You can also perform an online scan of your computer using the Windows Live safety scanner.
Get a Free Safety Scan
To scan your computer for malicious and potentially unwanted software from a Web site, click:
Safety iconWindows Live safety scanner.
Windows Live safety scanner is an online service that you can use for free spyware removal. Use it to scan your computer to help protect, clean, and keep your computer running at its best. Use the free scan to check for and remove viruses, spyware, and other potentially malicious software and to find vulnerabilities or shortcomings in your Internet security.
Protect Your PC
To help protect your computer against a wide variety of security threats, see Protect your PC.
Technical Assistance
Contact your antivirus vendor for assistance with identifying or removing virus or worm infections. If you need more help with virus-related issues, contact Microsoft Product Support Services.
* For support within the United States and Canada, call toll-free (866) PCSAFETY (727-2338).
* For support outside the United States and Canada, visit the Product Support Services Web page.
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