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What does the mrtstub.exe file do?

The mrtstub.exe process is also known as Malicious Software Removal Tool Update Stub and is a part of Microsoft or, as the case may be, Malicious Software Removal Tool Update Stub. This software is produced by Microsoft (www.microsoft.com). An obsolete or defective version of mrtstub.exe can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about mrtstub.exe mrtstub.exe

mrtstub.exe is not a Windows system file and is known to frequently cause computer problems. Mrtstub.exe is found in a subdirectory of C:\. Frequently occurring are file sizes such as 85,640 bytes (33% of all these files), 92,992 bytes or, as the case may be, 91,328 bytes.
This process does not appear as a visible window, but only in Task Manager. The original file has been signed by a trusted signature authority. This lets you check your copy to see if it is a counterfeit. The mrtstub file was developed by a so-called third party provider - and not by Microsoft. For this reason, 36% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves mrtstub.exe. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.

What do other computer users say about mrtstub?

file size, Vista: 96216 bytes
w2k size 24,512 - found in root dir of my K-drive - one of 5 partitions on a 2nd HDD
Appears to be a component of updating Microsoft's malware removal tool
MRTSTUB is the responsible process for corrctly copying and running updated versions of MRT.exe (Malicious Removal Tool).
While I was searching for info about mrtstub.exe it disappeared !

Summary: 5 users judge mrtstub.exe to be an essential file that should not be touched. One user considers it harmless. However, 3 users consider this to be a suspicious process and would like to get rid of it. For this reason, 4 users have already deleted mrtstub.exe. source: file.net

How to uninstall Microsoft or Malicious Software Removal Tool Update Stub

To remove mrtstub.exe from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. You find it in the lower left corner of the taskbar.
  2. Type the word uninstall.
  3. Click Add or remove programs.
  4. Now locate Microsoft or Malicious Software Removal Tool Update Stub in the list of displayed applications.
  5. Click the program, and then click Uninstall.
Remove software in Windows 10
mrtstub.exe mrtstub.exe fix

How to tell if mrtstub.exe (mrtstub.exe) was uninstalled cleanly

After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of mrtstub.exe. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for mrtstub.exe or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.

What to do if a program does not uninstall

The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.

Last but not least

If Windows not working quite right for you, or if startup is taking a long time, or mrtstub.exe is causing problems for you, a good Windows diagnostic tool may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.

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