What is msmpeng.exe and how to fix msmpeng.exe ?

What is msmpeng.exe file ?


The genuine MsMpEng.exe file is a software component of Windows Defender by Microsoft Corporation.;MsMpEng.exe” is Microsoft’s core antimalware executable. It performs the actual background real-time protective scanning for malware, viruses, and worms of files that it detects as having been created or updated recently. It has been used since Windows XP both in consumer-oriented products, (Windows Defender, Microsoft Security Essentials), and by Microsoft enterprise products designed for managed software or server environments such as Forefront Client Security (FCS), meant only for Windows Server, not endpoint Windows. High CPU usage is a well-known side-effect of “msmpeng.exe”, often a major reason that users install third-party antimalware products. When such products are installed, Windows Defender is deactivated. It installs in a subdirectory of “C:Program Files” whose name depends on the OS version: “Microsoft Security Client” for XP/Vista/Win7, or “Windows Defender” for Win8/8.1/10. It is uninstalled if the overall security product name is removed via the Control Panel.;MsMPEng stands for M icro s oft M alware P rotection Eng ine;In some case msmpeng.exe can harm your computer. Therefore, please read below to decide for yourself whether the MsMpEng.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.

Follow steps bellow to try fix the problem with msmpeng.exe

1. Use cleanmgr

To run the command cleanmgr :
Press Windows key + Q.
Enter cmd in search box , followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command cleanmgr and press Enter.

2. Use sfc /scannow

To run the command sfc /scannow :
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command sfc /scannow and press Enter.

3. uninstalling programs :

To uninstall unnecessary programs :
Open the Start menu (Press Windows key + X) .
Click the first menu item Programs and Features.
Search unnecessary programs in the list of installed programs, .
Click the software you want to uninstall.

4. using msconfig

To run the command msconfig :
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command msconfig and press Enter.

5. Automatic Update

To run the command wuauclt /ShowWindowsUpdate:
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command wuauclt /ShowWindowsUpdate and press Enter.

6. Use resmon command

To run the command resmon :
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command resmon and press Enter.

7. use DISM.exe

To run the command DISM.exe /Online /Cleanup-image /Restorehealth :
Press Windows key + Q.
Enter cmd in search box, followed by the combination Ctrl + Shift + Enter to run it as Administrator.
Enter the command DISM.exe /Online /Cleanup-image /Restorehealth and press Enter.


msmpeng.exe descriptions


MsMpEng.exe” is Microsoft’s core antimalware executable. It performs the actual background real-time protective scanning for malware, viruses, and worms of files that it detects as having been created or updated recently. It has been used since Windows XP both in consumer-oriented products, (Windows Defender, Microsoft Security Essentials), and by Microsoft enterprise products designed for managed software or server environments such as Forefront Client Security (FCS), meant only for Windows Server, not endpoint Windows. High CPU usage is a well-known side-effect of “msmpeng.exe”, often a major reason that users install third-party antimalware products. When such products are installed, Windows Defender is deactivated. It installs in a subdirectory of “C:Program Files” whose name depends on the OS version: “Microsoft Security Client” for XP/Vista/Win7, or “Windows Defender” for Win8/8.1/10. It is uninstalled if the overall security product name is removed via the Control Panel.;MsMPEng stands for M icro s oft M alware P rotection Eng ine;The.exe extension on a filename indicates an exe cutable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the MsMpEng.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.