How to Uninstall the Microsoft Malicious Software Removal Tool
The Microsoft Malicious Software Removal Tool is a utility released by Microsoft that is able to detect and remove specific, well-known security threats such as the Blaster worm and Sasser worm. Microsoft offers the removal tool as a free download. The Removal tool is an executable program that launches from the downloaded file itself; there is no installation process when using the tool, so a full uninstall process is not required to delete the tool from your PC.
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Instructions
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Browse your computer for the directory containing the Microsoft Malicious Software Removal Tool, right-click on the tool and select "Delete." It will likely be in your normal download folder if you downloaded it from Microsoft. Confirm that you wish to delete the file when prompted.
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Right-click on the Recycle Bin and choose "Empty Recycle Bin." Confirm that you wish to empty the bin when prompted.
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Click "Start," "Search" and then type "Mrtstub.exe" into the search box and press "Enter." If the search discovers a file by this name, go to the file and delete the folder it is in, and all the other files in the folder. According to Microsoft, when you run the Malicious Software Removal Tool, it creates a randomly named temporary directory on the root drive of the computer that contains the Mrtstub.exe file. If this file remains after using the program, you can delete the directory yourself without harming your computer.
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Tips & Warnings
According to Microsoft, the temporary directory created by the removal tool will be deleted automatically in most cases.
If you remove the tool from your computer and later wish to scan your computer with the tool, you can simply download the tool from Microsoft again and then run the tool.
