How to fix MsMpEng.exe High CPU Usage problem?

Malware and viruses are a constant threat to our computers and laptops, and it is important to keep them clean as it affects the functioning of the various programs. Also, the very dear Data of yours is in danger from such malware. And thus antimalware or antivirus is thought of to protect our devices from external program threat and from protecting our information from being stolen. The MsMpEng.exe, an antimalware software and part of the Windows Defender. It is an excellent antivirus program, but there have been complaints about MsMpEng.exe using a lot of CPU resources causing high usage of CPU. So today we will be giving you an insight into what MsMpEng.exe is and everything related to the MsMpEng.exe high CPU usage problem.

What is MsMpEng.exe?

MsMpEng.exe is a part of the Windows Defender program and is popularly known as the Windows Defender in Windows 7. It is an antivirus program by default from Microsoft. Though one can get different paid, and free anti-malware program but Windows Defender is an inbuilt one which has continued to the Windows 8 and 8.1 also. It scans our computer for viruses, harmful software, and spyware. Due to the high usage problem of MsMpEng.exe, one can opt for some different antivirus program. But if you want to continue with Windows Defender, then you can either disable it to resolve the MsMpEng.exe high disk usage issue or check out some more ways to troubleshoot it.

Fix MsMpEng.exe High CPU Usage problem

There are a lot of reasons which result in this unusual behavior of Windows Defender. Some of them are:

  • Low hardware resources
  • The program might be scanning its directory
  • Registry files of old antivirus program
  • Your computer might have installed malware

Method I- Prevent Windows Defender from Scanning its Directory

If you are facing the MsMpEng.exe high CPU usage issue, then the first thing that you should do is to avoid the file from scanning. By excluding the MsMpEng.exe high disk usage file, you can resolve the problem. Also, it will help you to solve the MsMpEng.exe high memory usage issue as well.

Step 1: Open the Microsoft Security Essentials on your PC. As the app opens, click on the Settings option.

Step 2: From the left side of the panel select Excluded files and locations and then click on the Browse tab.

Step 3: Navigate to the place where high memory MsMpEng.exe file is present. You can get the file from the given below locations:

For Windows 8 user, the file location will be

C:\Program Files\Windows Defender\ MsMpEng.exe

For Windows XP, 7 and Vista users, the file location will be

C:\Program Files\Microsoft Security Client\ MsMpEng.exe

Step 4: after following the file location, locate the file and click on MsMpEng.exe and press OK.

Step 5: Now click on the Add button so as to add the selected file.

Step 6: After adding the file, click on Save Settings option.

Step 7: As the final step you need to reboot the computer, and your problem will be solved shortly after the file is deleted.

Method II- Uninstall and Reinstall the Microsoft Security Essentials

By uninstalling the Microsoft Security Essentials and then installing it again, you can minimize the MsMpEng.exe high CPU usage issue.

For MsMpEng.exe Windows 7, Windows 8 or Windows Vista

Step 1: Open Control Panel.

Step 2: Now click on Programs and Features.

Step 3: Locate Microsoft Security Essentials in the new window that opens and uninstall it, by right clicking.

Now it’s time to reinstall the Microsoft Security Essentials that was successfully uninstalled. Follow the given blow link and download the latest version of Microsoft Security Essentials. That’s it, the program will be reinstalled.

Also Read: How to Create Guest account on Windows 10

Method III- Limit the CPU Usage

The users facing the MsMpEng.exe Windows 7 or Windows 10 issue, can try this method of limiting the CPU usage. It can be done by following the given steps. We have sought to separate the process for both Windows 7 and 10.

For Windows 7 users

Step 1: Navigate to the Task Manager.

Step 2: Locate the MsMpEng.exe process and right click on it.

Step 3: Now click on Set Affinity in the Contents list.

Step 4: Lastly click on the chores that are allowed by you to be used by the particular process.

For Windows 10 users

Step 1: Navigate to Task Manager and then click on More Details.

Step 2: Now click on the Details tab. Right click on the MsMpEng.exe process in the list.

Step 3: Click on Set Affinity and set the CPU limit threshold.

Method IV- Start Your Computer in Safe Mode

The MsMpEng.exe antimalware service executable, but results in high CPU usage. Thus it is our job to check and remove any malware present on our computer. To scan your devices for malware, start your computer in safe mode with networking. Enter the safe mode through following steps.

Step 1: Put your computer on reboot after closing all the programs that were running.

Step 2: Press the F8 key while the computer is on a reboot. Keep the F8 key pressed till the logo of Windows is seen on the screen.

Step 3: Soon you will see a black screen. Now click on the Safe Mode with networking option within the Windows Advanced Options.

Step 4: By doing this you will be able to enter the Safe mode in Windows XP, Vista and Windows 7 with networking.

Method V- Reschedule the Scanning Time of Microsoft Security Essentials

By rescheduling the scanning time of Microsoft Security Essentials while you are not occupied will certainly bring its processing speed to a halt while you are working. For MsMpEng.exe antimalware service executable, follow the given steps.

Step 1: Open MSE on your PC and then click on Settings.

Step 2: On the left-hand side, click on Scheduled Scan.

Step 3: On the right-hand side, you will be allowed to make changes in the time and date of the scanning process.

Step 4: Click on Save Changes option.

Check if the MsMpEng.exe antimalware service executable issue of high CPU usage has been resolved. If not then you can try disabling the real time protection of your PC. So let’s see how to disable MsMpEng.exe, through real-time protection.

Step 1: After opening the MSE, click on the Settings option.

Step 2: Locate Real-time Protection on the left-hand side of the screen.

Step 3: Uncheck the check box of “Turn on Real-time protection (recommended)” option on the right.

Step 4: Now press the Save Changes option.

Method VI- Remove Adware

Adware is software that downloads and displays the advertising material automatically while a person is working online. There is specialized software that can be used to remove such adware and thus solve the issue of MsMpEng.exe antimalware service executable. Two efficient adware removing programs are:

  • AdwCleaner: This software is compatible with Windows7, 8 and 8.1 along with Windows Vista, XP and Windows 10. So now you can fix the MsMpEng.exe Windows 10 issue.
  • Malwarebytes: This software program works to remove adware, spyware, malware and even the anti-rootkit tech.

In place of installing some adware remover, one can also fix the MsMpEng.exe Windows 10 or 7 issue by installing some other antimalware program.

The security, as well as the efficiency of your system, is in your hands. By installing an antimalware program, your work doesn’t finish as these antimalware might protect your PC or laptop from virus and other malware, but they might also be affecting your computer’s efficiency to work. The MsMpEng.exe antimalware service executable high CPU usage issue is one of them. So if you become a victim of such a problem, then it is advised that you use of any of the above-given methods and rise against the threats.

How to fix MsMpEng.exe High CPU Usage problem?
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