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MSRT can only detect and remove malware that is currently running on your system.

(Microsoft updates and releases the MSRT regularly, as often as every two weeks.)

It doesn’t remove all malware from your PC since it only looks for specific threats that are prevalent at the time of release.

MSRT is designed to work if your computer has already been infected by malware.

Here’s how the MSRT differs from traditional antivirus software. It will not help you remove spyware from your PC. Unfortunately, the MSRT doesn’t offer active scanning and protection against threats and it isn’t designed to be used in place of robust antivirus software. It can detect and remediate Trojan horses, viruses, and worms. It’s meant to be run if your machine has already been compromised by malware.

The Microsoft Malicious Software Removal Tool is a post-infection malware removal tool that is designed to look for specific prevalent threats and undo the changes they have made to your system. If you let Windows Update do its thing in fully automated mode you won't notice the double installation of MSRT this month.What Is the Microsoft’s Malicious Software Removal Tool? If you run Windows Update manually, you also won't see anything out of the ordinary.

To notice the double-install, you need to run Windows Update manually, reboot, then run it again. I have seen patches that install and install and install yet again. Sometimes Windows Update ends up in a loop, unaware that the patch is already installed.That doesn't seem to be the case here,however, as the July 2013 edition of MSRT is always installed twice, never three times. The Malicious Software Removal Tool is file mrt.exe in C:\Windows\System32. The properties of this file tell the tale. One Windows 7 machine started out with the June 2013 edition of MSRT. The properties of mrt.exe showed it was last modified Jat 5:11pm. Other Windows 7 machines showed different last modified timestamps, but all were version.Īs you might expect both the modification date and file version advanced.Ġ.Īfter the first installation of the July 2013 edition of MSRT, the mrt.exe file was version. You can also initiate scans manually whenever needed by running mrt.exe in the Windows\System32 directory. Malicious software scanning runs as you install MSRT from Windows Update. 0 of mrt.exe.Īfter the second installation of the July 2013 edition of MSRT, the file version was. Microsoft Malicious Software Removal Tool (MSRT) is a post-infection removal tool which is updated every month and rolled out through the Windows Update channel. 0 and the last modification date was Jat 12:57AM. So while the version increased, the date went backwards. You can see the double installation below.