What is MpCmdRun.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the MpCmdRun.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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MpCmdRun.exe file information

Windows Task Manager with MpCmdRun
MpCmdRun.exe process in Windows Task Manager

The process known as Microsoft Malware Protection Command Line Utility or Windows Defender Command Line Utility or Command Line Utility belongs to software Microsoft Malware Protection or Windows Defender or Microsoft Windows Operating System or Microsoft Security Essentials by Microsoft (

Description: MpCmdRun.exe is not essential for the Windows OS and causes relatively few problems. MpCmdRun.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 203,312 bytes (14% of all occurrences), 293,144 bytes and 28 more variants. 
The program is not visible. The file has a digital signature. The MpCmdRun.exe file is not a Windows core file. The process can be uninstalled in the Control Panel. Therefore the technical security rating is 21% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you still experience problems with MpCmdRun.exe, you can do the following:

Recommended: Identify MpCmdRun.exe related errors

If MpCmdRun.exe is located in a subfolder of C:\Windows, the security rating is 16% dangerous. The file size is 157,184 bytes. The file is a Microsoft signed file. The program has no visible window. It is not a Windows system file.

Important: Some malware camouflages itself as MpCmdRun.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the MpCmdRun.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Calls itself "Windows Defender Command Line Utility" is m$ signed and resides in the defender directory. I have no idea though why it is running all the time, never started it, and only recently it was there (maybe after latest vista service pack?)
Microsoft Security Essentials
  Frank   (further information)
Windows Defender
It is not really neseccary and i dont know why it connected every few minutes to the internet:
  Wolfgang S.  
it is :Microsoft Malware Protection Command Line Utility Signed by Microsoft Corporation
This seems to eat up data on my laptop. I can end the process but I need a way to delete it all together.
  joe garcia  
Advare program thaty instals crosbrowse, uc browser, opera browser, bluestacks, snapdo, and more crap.

Rating chart

Summary: Average user rating of MpCmdRun.exe: based on 13 votes with 7 user comments. 6 users think MpCmdRun.exe is essential for Windows or an installed application. 2 users think it's probably harmless. 3 users think it's neither essential nor dangerous. One user suspects danger. One user thinks MpCmdRun.exe is dangerous and recommends removing it. One user is not sure about it.

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Best practices for resolving MpCmdRun issues

A clean and tidy computer is the key requirement for avoiding problems with MpCmdRun. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the MpCmdRun.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

MpCmdRun.exe [all]