Msmpeng.exe: What Is It & You Should Remove It Or Not?


Most of the users have no idea about Msmpeng.exe and also have any idea about removing it or not? So, let’s have a look! Also, your CPU has been at 100% utilization lately? In case, if you went to the Task Manager in Windows. This will also look up at your processes tab, then you may have noticed a process called msmpeng.exe eating up all your available CPU.

What is msmpeng.exe and how can you prevent it from slowing your system down? Also, unlike what you may have read elsewhere. This is not spyware or malware. Then actually quite ironic just because it’s associated with the Windows Defender. Also, the anti-virus product from Microsoft.

A Windows Defender is also one of the most important anti-malware and antivirus programs that are used for Windows. Then you really should not turn it off unless you have a third-party program install on it. In most cases, it will also turn off automatically.

Using this article, we will go through the different reasons why it could be using up your CPU and what you can do to fix it.

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Msmpeng.exe: How To Perform a Scan?

In case, if this will happen to look at the task manager while the Windows Defender was performing a scan. So, this obviously will be taking up a lot of the CPU cycles. You have to wait until the scan is finished and also check your CPU utilization again. So, Hopefully, it should be back to normal.

Sadly, there are not any other ways to change and then schedule the scan time for Windows Defender. This should also perform a scan if the computer is idle and also outside of active hours. Although, if you will also turn off your computer. It is also possible to perform the scan while you are using it.


So, Most automatic scans should not take that long. In case, if you are seeing that your computer is running slow for long periods. Then it could be that Windows Defender and also spending a lot of time scanning a directory or also process. So, that it does not need to be checked. Now, This will also bring us to the next possible solution.

The Exclusions from Scanning On Msmpeng.exe:

This is also one of the best ways to figure out what to exclude. You have to perform a full scan and also watch as it goes. Also, through all of the items on your computer. If you will see that it is also taking a long time in a particular directory. If scanning a specific process, then you can also add that to the exclusions list.

Now, you can also do this by going to Virus & Threat Protection. A Virus & Threat Protection settings and finally clicking on Add or remove exclusions. After that, You can also add a File, Folder, File Type, or also Process to the exclusion list. When you add the offending items to the list. Then the amount of time it will also take to complete the scan that should cut down significantly.

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How To Turn off Windows Defender?

Also, The other option that is used to simply turn off Windows Defender. Then I don’t recommend it unless you really must. So, the other option before permanently disabling Windows Defender. You have to install a third-party anti-virus program. If you install another anti-virus product. Then the Windows Defender will automatically disable itself so that the two programs don’t interfere with each other.

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Also, there are a couple of ways through which you can also disable Windows Defender on your PC. Using Windows 10, Microsoft also really doesn’t want you to do this. Then the only option that you have in the Security Center is to disable real-time protection temporarily.


Now, The other way is to edit a registry setting. You have to Open regedit on your PC (then Click on Start and also type in regedit) and also navigate to the following directory:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender



You have to create a new DWORD (32-bit) Value called DisableAntiSpyware. This will also give you a decimal value of 1. You have to Go ahead and also restart your computer and also Windows Defender then it should be disabled now. Now, You can also delete this key or also change the value to 0 later. You can also re-enable Windows Defender.

There is a second way that will you to permanently disable Windows Defender. You have to use Group Policy, which will only work on Windows 10 Pro or higher versions. Then Click on the start and also type in gpedit. msc and then press enter. You have to navigate to the following folder:

Computer Configuration - Administrative Templates - Windows Components - Windows Defender Antivirus

Now, You will also see an option in the right-hand pane called Turn off Windows Defender Antivirus. You have to Double-click on that and select the Enabled radio button.


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In case, if you went to the Task Manager in Windows. This will also look up at your processes tab, then you may have noticed a process called msmpeng.exe eating up all your available CPU. What is msmpeng.exe and how can you prevent it from slowing your system down. Also, unlike what you may have read elsewhere.

Probably, if you don’t need to disable Windows Defender. This is normal and also does an excellent job of keeping your computer safe that is from malware and viruses. In case, if you have any issues or nothing above worked for you. Then let us know in the comments and we’ll try to help.

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