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. If you would like 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.
To download the latest version of this tool, please visit the Microsoft Download Center
To download the x64 version of Malicious Software Removal Tool, click here.