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This KB entry contains information about MSRT and provides links to related topics. Information for IT administrators and advanced users (KB890830)įor advanced information, read KB890830 at. It also generates the following log file: The standalone version available on this page is delivered at the same time.Īfter the standalone version of MSRT scans the computer and removes threats, it displays a report that lists the threats. Microsoft generally delivers MSRT with Windows Update the second Tuesday of the month. If you would like to run MSRT on demand, run the standalone version. The integrated version automatically runs in the background. For comprehensive malware detection and removal, consider using Microsoft Safety Scanner.Įnable automatic updates to regularly get MSRT with Windows Update. MSRT targets prevalent malware families only. This tool does not replace full-fledged antimalware such as Windows Defender Antivirus. To complement your antimalware product.If you suspect an infection from prevalent malware families ( see covered threats).Windows Update automatically downloads and runs MSRT in the background. If you have automatic updates for Windows turned off.The tool is not a replacement for a “real” antivirus program, because its virus list is limited and updated only once a month. /? or /help - displays usage information./F:Y - performs a full scan of the computer and automatically cleans all the found infections./F - performs a full scan of the computer without removing any infections that are found.In this mode, any detected malicious software will be reported but it will not be removed This option suppresses the user interface completely /Q or /quiet - runs the tool in quiet mode.

There are some switches for running the mrt.exe manually: You can run it "manually" in interactive mode too, typing mrt.exe in the "Run Window" (or search field of Windows Vista - Vista will UAC-prompt you.) You can tell if it runs, searching the Windows Task Manager for "mrt.exe". There is a 32bit and 64bit version.Īfter the installation or update, it automatically runs in the background and removes viruses if there are any creating the report file mrt.log in the 'C:\Windows\Debug' folder.


But you can download it from the Microsoft Download Center. If you don't find this file there, it's a sign that it is not installed on your computer. You can find it in the in the ' C:\Windows\System32' folder, its name is mrt.exe. It is automatically updated on the second tuesday of every month via Windows Update. Microsoft's Malicious Software Removal Tool is a free tool for Windows XP and Vista (and probably Windows 7) which scans computers and removes specific malicious software.
