‘MsMpEng.exe High CPU’ Usage on Windows 10


Many users face MsMpEng.exe High CPU Usage on Windows Computers. In this guide, we are going to tell you all you need to know about this method and how to fix some of the most general error created by MsMpEng.exe.


Is MsMpEng.exe A Virus?

MsMpEng.exe is a core method of Windows Defender. It’s not a virus. Its role is to scan downloaded files for spyware, and quarantine or shift them if they are dubious. It also scans your system for known worms, detrimental software, viruses, and other such programs.

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How can you Stop MsMpEng.exe?

Many Windows users, impartial of the Windows version they use, have reported that sometimes MsMpEng.exe reasons high CPU usage, gaining even more than 80%.

To fix this issue, you can stop MsMpEng.exe from the Task Manager.

Errors Caused by MsMpEng.exe

Numerous problems can occur with MsMpEng.exe, and users reported subsequent issues:

  • MsMpEng.exe End Process Access Denied: According to users, off and on, they might get Access Denied error message while trying to end this method. To fix this issue, be sure to try some of our solutions.
  • MsMpEng.exe Eating Memory, CPU: Once and again, this method can reason both high CPU and memory usage. This can drastically influence your performance, so it’s important to fix this issue as soon as you can.
  • MsMpEng.exe Excessive Disk Usage: In amalgamation to high CPU usage, disk usage issues can also appear. Numerous users reported that this method is responsible for high disk usage on their PC.
  • MsMpEng.exe Encountered A Problem: Once or twice, this method can randomly crash on your PC. You can easily recognize this issue by Encountered a problem error message.
  • MsMpEng.exe Running Constantly: Numerous users reported that Msmpeng.exe is always running in the background. According to them, this is reasoning high CPU usage on their PC.
  • MsMpEng.exe Slow Boot: This method can also affect your boot time. Numerous users reported that their PC boots slowly due to this issue.
  • MsMpEng.exe Keeps Running: Different users reported that this issue keeps running in the background. Due to high resource usage, this method can drastically decrease your performance.
  • MsMpEng.exe Memory Leak: Various general issues with this method is memory leaks. If this issue ensures your PC, be sure to try some of our solutions.

Why is MsMpEng.exe Taking High CPU?

There are various reasons for this MsMpEng.exe unusual behavior such as:

  • The tool is scanning its directory.
  • Low hardware resources.
  • Old antivirus registry files.
  • Malware installed on your computer.

There are lots of free and paid antivirus programs gainable, and you can select at any moment to diverge Windows Defender and replace it with different antivirus.

Though, before taking such a judgment fueled, possibly by MsMpEng.exe’s high CPU usage, you should try out the following workarounds to fix MsMpEng.exe High CPU Usage issue.

Solution 1: Start the Computer in Safe Mode

For Windows 7

Step 1: Reboot your computer.

Step 2: Press F8 as your Computer is Restarting before the Windows logo turns up.

Step 3: When the Windows Advanced Options Menu turns up on the screen, choose “Safe Mode with Networking” and press Enter.

For Windows 10

Step 1: Go to Settings.

Step 2: Choose Update and Security → Recovery.

Step 3: Under Advanced startup, choose Restart Now.

Step 4: When your PC restarts to the Choose an option screen, choose to Troubleshoot → Advanced options → Startup Setting → Restart.

Step 5: You will then see list options → press F4 to start your PC in Safe Mode.

Solution 2: Prevent Windows Defender From Scanning Its Directory

For Windows 7

Step 1: Go to Windows Defender → Tools → Advanced options.

Step 2: Open Excluded files and locations.

Step 3: Copy and Paste the following path C:\programs files\windows defender.

For Windows 10

Step 1: Type Windows Defender in the search bar > double click on Windows Defender.

Step 2: Go to Settings → choose to Add an exclusion.

Step 3: Choose Exclude a file and paste the following path C:\programs files\windows defender.

Step 4: Make out by clicking on Exclude this folder.

Solution 3: Limit the CPU Usage

For Windows 7

Step 1: Go to Task Manager.

Step 2: Right-click on the exe method in the Task Manager list.

Step 3: In the context menu, choose Set affinity.

Step 4: Select the core which you allow the particular method to use.

For Windows 10

Step 1: Go to Task Manager → More details → click on the Details tab.

Step 2: Right-click on exe → choose Set affinity → choose the CPU limit threshold.

Solution 4: Removing Adware and Malwarebytes

You can use specialized software to remove adware. Two of the most folksy such software programs are:

AdwCleaner: It has more than 125 million downloads. This free software is apposite with Windows XP, Vista, 7, 8, 8.1, and Windows 10.

Malwarebytes: Detects and removes malware, spyware, adware, and anti-rootkit tech. You can try it for free for 14 days or buy a one-year subscription for $25.95 or a two-year subscription for $41.95.

Solution 5: Reschedule the Windows Defender

Windows Defender can, at time, reason issue with MsMpEng.exe and high CPU usage. To fix MsMpEng.exe High CPU Usage, you need to reschedule Windows Defender by following these steps:

Step 1: Press Windows key + S and enter Task Scheduler. Choose Task Scheduler from the list of results.

Step 2: When Task Scheduler opens, in the left pane, navigate to Task Scheduler Library/Microsoft/Windows/Windows Defender. In the right pane, double click on Windows Defender Scheduled Scan.

Step 3: When the properties window opens, go to the Conditions tab. Make sure that Start the task only if the computer is idle, Start the task only if the Computer is on Ac power and Start only if the following network connection is available options are disabled. Click on OK to save changes.

Step 4: Open the properties window again and go to the Triggers tab and Click on New.

Step 5: Select Weekly or Monthly and Choose the desired properties. Once you are done, click on the OK button to save changes.

Step 6:Now go back to Task Scheduler and make the same changes for all Windows Defender tasks.

It is a bit advanced workaround, but you should be able to complete it by following our steps closely.

Retain in mind that high CPU usage will reoccur when Windows Defender starts scanning. Though, you can schedule the scan to take place once a month to avoid MsMpEng.exe High CPU error.

Solution 6: Disabling Windows Defender

If you’re still having issues with MsMpEng.exe and high CPU usage, you might be capable of fixing the issue simply by disabling Windows Defender.

Before you disable Windows Defender, be sure to install third-party antivirus software to protect your PC. To disable Windows Defender, you need to do the following:

Step 1: Press Windows Key + R and enter msc and press Enter and click on OK.

Step 2: Group Policy Editor will now start. Intercept in attention that this characteristic is obtainable only on Pro and Enterprise versions of Windows. Though, you can also install Group Policy Editor on Home versions of Windows.

Step 3: In the left pane, the proper way to Computer Configuration → Administrative Templates → Windows Components → Windows Defender Antivirus. In the right pane, double click on Turn off Windows Defender Antivirus.

Step 4: When prominence window opens, choose Enabled and click on Apply and Ok to save changes.

If you can’t run Group Policy Editor on your PC, you can also fix this issue by modifying your enlistment. To do that, obey these steps:

Step 1: Press Windows Key + R and admit into regedit and press Enter or click

Step 2: When enlistment Editor opens, in the left pane proper way to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender.

Step 3: In the right pane, glance for DisableAntiSpyware. If this DWORD isn’t obtainable, right-click the space and select New → DWORD (32-bit) Value from the menu. Now enter DisableAntiSpyware as the name of the new DWORD and double click it.

Step 4: Set the Value data to 1 and click on OK to save changes.

After opus the changes, Windows Defender will be disabled, and the MsMpEng.exe High CPU error should be pertinacious.

Solution 7: Disabling Sample Submission

According to users, issues with high CPU usage and MsMpEng.exe can turn up due to Sample Submission characteristics. This characteristic sends uncertain files to Microsoft for analysis.

Not but what this is a useful characteristic, it can reason issues to look through. To fix this issue, we need to disable this characteristic by doing the following:

Step 1: Open the Settings app and proper way to Update and Security.

Step 2: The proper way to Windows Defender on the menu on the left and click on Open Windows Defender Security Center.

Step 3: In the left pane, click on Virus and threat protection. Then click on Virus and threat protection settings.

Step 4: Lying Automatic sample submission and turn it off.

After doing this, your problem is resolved.

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If you are not contented with the result of the solutions suggested above, check out this article which will help you to choose another antivirus program.


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