[Fixed] Antimalware Service Executable High CPU and RAM Usage

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Compared to the previous versions, Windows 10 and 11 have fewer bugs and are resource-friendly. That is, if your PC has a decent CPU and RAM, you can have a lag-free Windows experience. However, there are still a few errors that can make your PC feel slower.

The Antimalware Service Executable High error is one of the problematic situations you may come across. You may have encountered the error while going through the Task Manager interface to understand what is causing your PC to misbehave. On the processes tab, you can find an entry called ‘Antimalware Service Executable High.’

But not many people understand what this error means or how to go about it. For example, the last time we checked, many thought the Antimalware Service Executable High error was a virus/malware at work. Well, it is not.

What Does the Antimalware Service Executable High Memory Consumption Error Mean

In a purely technical sense, Antimalware Service Executable High is not an error per se. However, it is one of those bad situations that you come across while using your Windows PC. The situation means you can find a process named Antimalware Service Executable in the Processes tab of Windows Task Manager. As you can guess, it is one of the core processes for Windows 10 and 11 — because of Windows Defender. The task process in question is connected to the real-time functioning of Windows Defender.

On regular days, you do not have to worry about this entry at all. It should be active on your PC without any issues. The problem occurs when the Antimalware Service Executable process takes up considerably high CPU and RAM resources. It may lead to a situation where you cannot use other apps on your PC — precisely because the Antimalware Service Executable process is running out of proportions. As a result, you cannot have a seamless Windows experience from the PC.

In other words, the Antimalware Service Executable High error is not a virus or malware. Instead, it happens due to specific settings on Windows Defender, especially regarding the consumption of resources. Therefore, you can fix the Antimalware Service Executable High RAM consumption error by changing those settings on Windows Defender and elsewhere.

How to Fix the Antimalware Service Executable High CPU/RAM Usage Error?

As you can guess, there is not a universal solution that would fix the Antimalware Service Executable High problem on all Windows PCs. You have to try different methods before you find the most suitable option. In this article, we have covered six different methods to fix the error. The solutions work for both Windows 10 and Windows 11.

Method #1 Alter the Scheduling Options for Windows Defender

As you probably know, Windows Defender is designed to protect your PC from various threats and issues. It can be a problem when you do not schedule the program correctly. Most importantly, Windows Defender will consume a lot of CPU and memory resources.

For instance, Windows Defender could be running a full scan of your computer at times. If you are not using your PC at the time, a full scan is not a problem. But, if you have something else running on your PC, the situation will cause the Antimalware Service Executable High RAM usage error.

So, the solution is to schedule when Windows Defender can consume resources. The steps are as follows.

  • You have to open Start Menu and search for ‘Run.’
  • On the upcoming Run window, you have to type ‘tasksschd.msc’
  • Press the Enter key, and you can open the Task Scheduler on Windows
Task Scheduler
  • On the left side of the window, you can explore the Task Scheduler Library
  • From the structure, choose Microsoft > Windows > Windows Defender
  • Click on Windows Defender, and you can see a few options on the right
  • From the options, double-click on Windows Defender Scheduled Scan
Windows Defender Scheduled Scan
  • In the general tab, at the bottom, you can see an option called Run with highest privileges
  • Uncheck the option if it was checked before
Uncheck Run With Highest Privileges
  • Now, go to the Conditions tab and uncheck all the options
Windows Task Scheduler Options Tab
  • Click on ‘OK’ to save all these changes

From now, Windows Defender will not consume all system resources while running full-system scans or real-time scans. As a result, you will not see the Antimalware Service Executable High error on your PC.

Method #2 Turn Off Real-time Protection on Windows Defender

On the topic of Windows Defender, its Real-time protection feature also causes the error called Antimalware Service Executable High. As normal thought would have it, disabling real-time protection is an effective way to stop encountering the error in the first place. You can use this method to reduce CPU/RAM usage.

We should add that it is not a permanent solution as such. When you turn off real-time protection, Windows Defender becomes an on-demand anti-malware program. Therefore, you have to schedule scanning sessions on a frequent basis. On the bright side, you can run these scans at a time of your convenience.

To turn off Real-time Protection on Windows Defender, you can follow the steps given below.

  • You have to launch the Start Menu and open the Settings App
  • From the options, choose Update & Security > Windows Security
  • From the menu that you can see, you have to select Virus & threat protection
Virus Threat Protection
  • Click on the option to Manage Settings
Virus And Threat Protection Settings
  • On the next page, you will find an option to toggle the ‘Real-time Protection.’
  • Make sure that you have chosen the ‘Disabled’ option for the item.
Disable Real Time Virus Protection

That is it. You have successfully turned off Windows Defender Real-time Protection. As a result, the process called Antimalware Service Executable will not run on your computer. Therefore, you do not have to worry about the Antimalware Service Executable High RAM/CPU error, either.

We should repeat that disabling Windows Defender Real-time Protection can make your system vulnerable to various threats. These threats may disrupt your privacy and security. Therefore, we recommend running a third-party antivirus program if you decide to follow this method.

Method #3 Exclude Antimalware Service Executable from Windows Defender

Suppose you do not want to turn off Real-time Protection on your computer and make the system prone to security issues. In that case, you can consider excluding the Antimalware Service Executable High process in Windows Defender. It means Windows Defender will not scan the files or folders that exist for the sake of Antimalware Service Executable High.

The steps you have to follow are given below.

  • We have to find the location path of the Antimalware Service Executable High file.
  • To do this, you have to open Windows Task Manager
  • Right-click on Antimalware Service Executable High and choose ‘Open file location.’
Antimalware Service Executable
  • Windows will now open a folder where you can see a file called MsMpEng.exe
  • You can now copy the path location of the file by clicking on the address bar. It should be like

C:\ProgramData\Microsoft\Windows Defender\Platform\4.18.2109.6-0\MsMpEng.exe

Msmpeng File
  • Now, you have to open the Run interface by clicking Windows Key + R
  • On the Run interface, you can type the following command


Windows Defender Command
  • Click on the OK button, and Windows will launch the Settings page
  • From the bottom section, you have to click on Manage Settings
Virus And Threat Protection Settings
  • On the next page, you can see a subsection named Exclusions
  • Click on the option called ‘Add or remove exclusion
  • From the next page, click on the button and choose Process
Add Process For Exclusion
  • Now, enter the path location that we have copied above
Add Exclusion
  • Press the ‘Add’ button to exclude the file from Windows Defender
Exclusion Path Added Successfully

Yes, you have successfully added the Antimalware Service Executable High process to the exclusion list of Windows Defender. It will make sure that you can enjoy maximum protection from Windows Defender while staying away from the Antimalware Service Executable High CPU error.

Method #4 Use a Third-party Anti-malware Program

The easiest method to get rid of the Antimalware Service Executable High error is using a third-party suite for privacy and security needs. The best part here is that Windows Defender will become subsided naturally. Therefore, you can get rid of the Antimalware Service Executable High CPU or Memory usage issue.

Of course, you have to make sure that you choose an effective antivirus program in the first place. It should be able to provide a level of protection similar to or better than Windows Defender. Rest assured, you can stop worrying about the Antimalware Service Executable High process eating up resources.

Other Methods to Fix the Antimalware Service Executable High Error

Method #5 Update Drivers

Sometimes, issues with device drivers can cause the Antimalware Service Executable High. Therefore, it is a good idea to update hardware drivers to the latest version. You can do it using the built-in driver manager options within Windows.

  • Press Windows logo key and R at the same time to open the Run box
  • Type devmgmt.msc > OK
  • Select the Category to expand and see the devices
  • Update the necessary driver

Method #6 Reinstall Windows

If the other methods do not work, you can consider reinstalling Windows on your device. It is a superb way to ensure that you can bring your PC to normalcy. Of course, this option comes with a cost: potential data loss.

Frequently Asked Questions

Frequently Asked Questions

How do I stop Antimalware Service Executable from using high memory?

Using one of the methods we have covered above, you can stop Antimalware Service Executable High from using up high memory and CPU resources. You may have to turn off Windows Defender or install another anti-malware program to help.

Can I end Antimalware Service Executable High?

Yes, there may be an option to end the Antimalware Service Executable High process. However, unless you have disabled real-time protection on Windows Defender, the process will be back running again.

How many MBs should Antimalware Service Executable High use?

Of course, we cannot predict the specific amount of memory that the Antimalware Service Executable High process should use. It depends on the kind of threats that the software has to deal with. However, it should not be high enough to disrupt your workflow.


We hope these steps help you get rid of the Antimalware Service Executable High error at the earliest. You should keep in mind that running your PC at high-level consumption is not a good idea. It will lead to issues like overheating and throttling. Therefore, getting rid of the Antimalware Service Executable High CPU and RAM error is something you must not ignore.

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