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" or sometimes in a subfolder of C:\. Known file sizes on Windows 8/7/XP are 203,312 bytes (20% of all occurrences), 293,144 bytes and 15 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 27% dangerous, however you should also read the user reviews.
If you still experience problems with MpCmdRun.exe, you can completely remove Microsoft Antimalware or Windows Defender (Control Panel⇒Add/Remove programs).

Recommended: Identify MpCmdRun.exe related errors

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

Auf jeden Fall wird man über Systemänderungen informiert, besser als wenn man nur kostenlose Firewall & Antiviren-Software einsetzt
  Klaus Schlangen  
Das ist bei mir der Win-Defender - update nehme ich an
Windows Defender, OS-Bestandteil Vista, unter XP und frühere Virus/Spyware wenn Defender nicht manuell installiert wurde.
  Wolfgang Nebel  
gehört zu Windows Defender
  Caen 2:3 Toulouse  
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
Verbindet sich bei mir alle paar Minuten ins Internet. Keine Ahnung warum. Dabei werden keine Updates überprüft. Wird MmN nicht bzw nur temporär benötigt, da der Service Win Defender bzw MS Security Essentials auch ohne ihn laufen.
  Wolfgang S.  
It is not really neseccary and i dont know why it connected every few minutes to the internet:
  Wolfgang S.  
Ist Bestandteil von MS Security Essentials, Sorgt unter anderem Für das Signaturupdate

Rating chart

Summary: Average user rating of MpCmdRun.exe: based on 10 votes with 10 user comments. 5 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 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 doing a repair of your installation, or in the case of Windows 8, 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]