How To Fix High CPU Usage By Antimalware Service Executable msmpeng?

If you’re facing a high CPU Usage on your device then read more to know How To Fix High CPU Usage By Antimalware Service Executable msmpeng

Many of the CPU users are complaining against the Msmpeng.exe for using high CPU usage and memory usage causing this your the processing speed of the CPU will be slowing down and whenever you’re going to use any application on your PC that takes so much time to open it up. So whenever your PC seems to be slow then you have to check the Msmpeng.exe in the Task Manager.

If you see the Msmpeng.exe at 100% usage in the CPU then you can assume that your system is slowing down at that time you should have to enable the Windows Defender using the windows antimalware service executable. When you did this the Windows Defender scans all the downloaded files from any websites and it will place those unknown or suspicious files somewhere or will try to remove them.

Suspicious files will harm the spyware or get infect the spyware as well, so to avoid this type of issue we have several methods and will fix this issue more effectively. Make sure that you should check Msmpeng.exe each time when you use a PC by using the Task Manager.

What is Msmpeng.exe?

It is an executable file that runs the antimalware Windows service to enable the Windows Defender to frequently monitors your CPU process for possible threats, When Windows defender runs the Windows antimalware service executable decides that Windows Defender protects from malware, viruses, and trojans.

Msmpeng is an important core process for Windows Defender. The Windows Defender’s actual work is to scan the downloaded files for Spyware. Then it starts by finding any doubtful items and it will delete that files or place them in quarantine and also acts as a preventer to prevent the infections of spyware on your PC and then it searches for the affected items or known worms or trojans. Let’s take a look at those fixing methods for high usage of CPU and storage space in it.

Reasons For Antimalware Service Executable msmpeng using High CPU Usage

The main reasons for using the High CPU Usage by the Antimalware Service Executable msmpeng are

  • Protection in Realtime
  • Full scan
  • Low hardware resources
  • Software conflicts/ Windows components
  • Due to the presence of malware, virus, and firmware
  • Availability of corrupted or misconfigured Windows system files
  • Lack of updates or outdated drivers or Windows Defender

Methods to Fix High CPU Usage By Antimalware Service Executable msmpeng

In this article, we are clearly discussing the methods to fix high CPU Usage By Antimalware Service Executable msmpeng the methods are simple and easy.

Method #1. Scan Computer for Malware

Using Malwarebytes you can easily identify the known worms and malware that are infected with the Msmpneg.exe. Using the latest version of any antivirus you can remove any type of viruses or malware from your system. When Msmpneg.exe is affected by viruses or malware your system process will be going slow down and is annoyed you. Make sure that your system should have the latest antivirus.

Scan Computer for Malware

So launch the updated antivirus on your desktop and scan your system right now. If any malware or trojans are there then select remove and it will permanently remove them from your system.

Method #2. Disable Windows Defender

High CPU usage is frustrating you then disable the Windows Defender from the registry editor by using the Run program. Remember that if you disable it then any malware or viruses will affect your Msmpeng.exe and your system will get slow down because of this you need to maintain a third-party anti-virus on your PC.

Using Registry

  • Launch the Run program by using the windows search bar.
  • Then type on the Run as Regedit then hit the enter button.
Type Regedit in Run Utility
  • It opens up the registry editor window on your desktop.
  • Now select HKEY_LOCAL_MACHINE on the left side of your desktop and select Software within that.
  • Now select policies within the Software, Click on Microsoft within the policies.
Select Policies and then Microsoft
  • Then click on the Windows defender within Microsoft.
Windows Defender
  • Now make a click on the DisableAntiSpyware now set the value to 1.
DisableAntiSpyware value to 1
  • If you did not find DisableAntiSpyware on windows defender then make a right-click on the default registry then select the DWORD(32-bit) value out there.
DWORD 32-bit value
  • Once you have done the previous and you will get a default registry then name it as DisableAntiSpyware and set the value as 1.

Using the Local Group Policy Editor

  • On Keyboard, press Windows + R keys to launch the Run utility.
  • In that type gpedit.msc and tap on OK button.
Type gpedit
  • It shows the Local Group Policy Editor.
  • Move to Computer Configuration and then select Administrative Templates.
Computer Configuration
  • Next, choose Windows Components and then tap on Windows Defender.
Windows Defender
  • In the Group Policy path, you must search for the Turn off Windows Defender setting and then double-click on it.
Turn off Windows defender antivirus
  • choose the Enabled option to turn off/ disable the Windows Defender.
Enabled Windows Defender
  • Finally, tap on Apply and then OK.
  • The Windows Defender will instantly disable then you need not restart the device.

Method #3. Change Windows Defender Schedule Settings

  • Launch the Task Scheduler using the windows search bar.
  • Now select the library within the Task Scheduler Library.
Task Scheduler
  • Then click on Microsoft and then click on windows.
  • Now select Windows Defender within Microsoft.
Select Windows Defender
  • Right-click on Windows Defender then select Create a task from the list displayed.
Create Task
  • Now disable all the enabled options and hit the enter button.
  • Now again make a Right-click on Windows Defender then select a new task.
  • Go to the triggers function on the displayed window and hit on the new option down there.
Move to Triggers and click on New
  • It opens up the scheduled task now select daily, weakly, and monthly depending on your convenience.
Schedule the task
  • Then select which day you want to schedule and hit the enter button for OK.
  • Now repeat the same procedure for the next three of Windows Defender Cleanup, Windows Defender Cache Maintenance,  and Windows Defender Verification.
Repeat the procedure

Method #4. Add Antimalware Service Executable to the Windows Defender’s Exclusion List

  • Launch the Task Manager on your desktop.
Task Manager
  • Now right-click on the Antimalware service executable on the process and select the open file location.
  • It opens up the file location of Msmpeng.exe and selects copy with the option at the top of the window.
  • Now go to the updates and security in the settings on your windows.
Choose Updates & Security
  • Then click on the windows defender on your left side.
Windows Defender
  • Now select add an exclusion option down there.
Add an exclusion
  • Select the option named Exclude a file.
Add an exclusion
  • It opens up the file manager on your screen.
  • Go to program files in the C drive.
  • Then select Msmpneg and click on exclude this file.
  • Now the path of the Msmpneg will be added to the exclusion list.
  • Select Exclude the file extension option out there.
  • Now in the add exclusion name, it is Msmpneg.exe, and click on the Ok button.

Method#5. Remove Bad Updates

In some cases, the Windows Defender will obtain the bad definition updates that lead to recognizing the specific windows files as viruses, here we are removing the bad updates with the help of Command Prompt.

  • Initially, on the keyboard press and hold down the Windows + R keys in order to launch the Run utility.
  • In that enter cmd and then press and hold down the keys Shift + Ctrl+ Enter at the same time to get the administrator privileges of the command prompt.
Enter cmd
  • Tap on Yes on User Account Control.
  • In the command prompt enter the following command and hit Enter

“%PROGRAMFILES%\Windows Defender\MPCMDRUN.exe” -RemoveDefinitions -All

Enter the command

Make sure the user must keep the commas on the command

  • Once enter the command again enter the following command and hit Enter.

“%PROGRAMFILES%\Windows Defender\MPCMDRUN.exe” -SignatureUpdate

  • It takes some time to complete the process.

Method #6. Disable Process Mitigations

It is helpful to end up the Exploit Protection Service that is helpful to lower the CPU Usage, this will cause a loop on where the Windows Defender will disable/ turn off the activity of the folder/ program.

  • Firstly, you must type Command Prompt or PowerShell and run it as an administrator.
Type CMD in the search bar and Open Command Prompt as an Administrator
  • Now enter the following commands one after another to disable/ turn off the Exploit Protection

powershell “ForEach($v in (Get-Command -Name \”Set-ProcessMitigation\”).Parameters[\”Disable\”].Attributes.ValidValues){Set-ProcessMitigation -System -Disable $v.ToString().Replace(\” \”, \”\”).Replace(\”`n\”, \”\”) -ErrorAction SilentlyContinue}”

Enter the command

Method #7. Run System File Checker

We all know that the System File Checker is a default Windows tool that is helpful to scan and also repair the corruptions of the system files.

  • On the Windows search bar, type Windows PowerShell or Command Prompt and run it as administrator.
Type CMD in the search bar and open the command prompt as an Administrator
  • In that Enter sfc/scannow and hit Enter.
Type sfc /scannow and hit Enter
  • It takes a few minutes to complete the process.
  • After that restart the computer.

Method #8. Check Real-time Protection Settings

To fix the High CPU Usage, the user must check the real-time protection settings, turn off the setting for a while, and then re-enable the setting, as usual, to do this the user must follow some simple steps.

  • Launch Settings on Windows.
Windows Settings
Windows Settings
  • Then select the Update & Security tab
Choose Updates & Security
  • Now tap on Virus & Threat Protection below the Windows Security.
Virus & Threat Protection
  • Next, disable/ turn off the Real-time protection.
Disable real-time protection
  • Wait for a few seconds then again re-enable the Real-time protection settings.

Note: Remember one thing, disabling the real-time protection will cause damage to the device, so after completion of troubleshooting you must enable the Real-time protection.

Method #9. Disable All Startup Items

One of the useful methods to solve not only this but also so many issues, disabling the startup items will enhance the system performance as well as speed.

To do this there are some simple steps to follow

  • Press Windows + R keys on the keyboard to launch the Run utility.
  • Enter msconfig and tap on the OK button.
Type msconfig
  • Now move to the Startup tab.
  • Next tap on Open Task Manager.
Open Task Manager
  • You must select one after another program and tap on Disable option.
Tap on Disable
  • Restart the computer

These are the methods that helpful to Fix High CPU Usage By Antimalware Service Executable msmpeng.

Frequently Asked Questions?

  • Question 1) Should I remove the Msmpeng.exe file?

Answer: Yes, but it is not the right one to do if you remove the Msmpneg.exe file then your system may attack or infect by some malware or viruses with this your system works slow.

  • Question 2) How much percentage should my CPU have?

Answer: If you are checking your CPU process every time it should be at 0% then your system process will be gone high and increased your CPU performance.

  • Question 3) Is Msmpneg.exe a virus?

Answer: Msmpeng is not a virus it runs the windows defenders by using the Antimalware service executable don’t think it is a virus.

  • Question 4) What Windows Defender would do?

Answer: Windows Defender scans all the downloaded items or files and if any suspicious files occur then it immediately removes or places them in the quarantine and prevents the system get infects by malware or viruses.


We provided the best method for fixing the CPU usage by using the windows defender exclusion and antimalware service executable. Run the methods same on your windows to fix the CPU usage.

When your CPU usage exceeds the limits then you have to take care of your system otherwise your system will fall into some critical issues and then your system will be going to slow down. Thank you for choosing iOSWinDroid

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