How to stop Antimalware Service Executable in Windows 10

Madalina Dinita
by Madalina Dinita
Former Managing Editor
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  • The Antimalware Service Executable is a Windows Defender process from Windows 10.
  • Many independent tests confirmed Windows Defender is one of the best antivirus tools for PC, so you can fully rely on it.
  • If the Antimalware Service Executable uses too many resources, you can stop it using the Registry Editor.
  • You can also stop this process by using a command-line tool as shown in our guide below.
How to stop Antimalware Service Executable in Windows 10
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Microsoft Antimalware is an antivirus software that protects your system against malware attacks.

This tool uses the same virus definitions and scanning engine as other Microsoft antivirus products, constantly monitoring activities on your computer.

Microsoft Antimalware installs a series of files on your system aimed at protecting your computer against threats.

Sometimes, the tool has a negative impact on users’ system performance, which determines them to uninstall it.

However, they soon realize this is not an easy task, because there always seems to remain a hidden file running in the background.

The Antimalware Service Executable, MsMpEng.exe runs even after users removed Microsoft’s AV tools, oftentimes leading to a high CPU usage.

I don’t want an antimalware. […] So far I tried turning off Windows Defender, but the process is still running. My last resort would be deleting MsMpEng.exe from C:Program FilesWindows Defender.

If I try to end it from Task Manager, it says “The operation could not be completed… Access is denied”. I really do not want it running and I feel that it is slowing down my computer. How can I turn it off?

Antimalware Service Executable is associated with Windows Defender, and many Windows 10 users reported issues with this process. Speaking of issues, these are some common problems that users reported:

  • Disable Antimalware Service Executable – There are several ways to disable Antimalware Service Executable on your Windows 10 PC, and in this article, we’ll show you three different methods of how to do that.
  • Antimalware Service Executable causes high memory and memory leak – Many users reported memory issues due to this service. In order to fix the problem, it’s advised to disable Windows Defender and check if that solves the issue.
  • Antimalware Service Executable high disk usage – Several users reported high CPU and disk usage due to this error. However, you can fix the issue simply by installing a third-party antivirus.
  • Antimalware Service Executable issues on Windows 8.1, Windows 7 – Problem with this process can affect both Windows 8.1 and 7, but even if you’re not using Windows 10, you should be able to fix the problem with one of our solutions.
  • Antimalware Service Executable running all the time, slowing down computer – Many users reported that this service keeps running all the time on their PC. However, you should be able to fix that using one of our solutions.
  • Antimalware Service Executable can’t end task – If you can’t end this task on your PC, you’ll have to disable or delete Windows Defender from your PC to solve the problem.

How can I kill the Antimalware Service Executable?

1. Disable Windows Defender

1.1 Disable Windows Defender from the Registry Editor

  1. Press Windows Key + R, type regedit in the search box, and hit Enter to launch the Registry Editor.
    Antimalware Service Executable high CPU Windows 10
  2. HKEY_LOCAL_MACHINE/SOFTWARE/Policies/Microsoft/Windows Defender
  3. Right-click on Windows Defender, select New, and select DWORD.
    disable windows defender registry editor windows 10
  4. Double click the newly created DWORD, name it DisableAntiSpyware, and set the value to 1.

If you can’t access the Registry Editor, check out this guide and solve the issue quickly.

If you’re not too fond of Registry Editor, you can also disable Windows Defender by using Command Prompt. By using Command Prompt, you can change your registry with just a single line of code.

1.2 Disable Windows Defender using Command Prompt

  1. Search for cmd in Windows search and click on Run as administrator to start Command Prompt with full privileges.
  2. When Command Prompt opens, run the following command and press Enter: REG ADD "HKLMSOFTWAREPoliciesMicrosoftWindows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
    Antimalware Service Executable high disk usage Win 10

After running this command, your registry will be modified and Windows Defender will be disabled.

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Using the command line to disable Windows Defender is a faster method, and if you’re an advanced user, you might want to try it out.

You can’t access Command Prompt as an admin? Take a closer look at this guide.

2. Use Group Policy Editor

  1. Press Windows Key + R and enter gpedit.msc. Now press Enter or click OK. This will start Group Policy Editor. Antimalware Service Executable can't end task
  2. In the left pane, navigate to Computer Configuration/Administrative Templates/Windows Components/Windows Defender Antivirus/Real-time Protection
  3. In the right pane, double click on Turn off real-time protection.
  4. Select Enabled and click on Apply and OK to save the changes.
    Antimalware Service Executable eating memory

After doing that, Windows Defender will be disabled as well as Antimalware Service Executable.

It’s also worth mentioning that this solution will disable antivirus protection on your PC, so your PC will be vulnerable.

In order to protect your PC, you should use this method only as a temporary solution.

3. Install a third-party antivirus to replace Msmpeng.exe antimalware service executable

Antimalware Service Executable is a process closely related to Windows Defender.

However, Windows Defender won’t run side by side with a third-party antivirus, so if you’re having problems with Antimalware Service Executable, you might want to install a third-party antivirus.

There are many great antivirus tools available on the market, but the best solution is to choose a good antivirus with least impact on resources.

Bullguard is probably the best low resource Antivirus. Choosing this antivirus you will reduce CPU load and help your system achieve its highest performance.

Bullguard utilizes cloud processing to protect PC thereby removing the need for heavy software updates and demanding scans. Here are its most important features:

  • Real-time antivirus protection
  • Ransomware attack prevention
  • Safe online shopping and banking
  • Blocking of dangerous websites
  • VPN for private, anonymous Internet access


Bullguard is not only light and low resource consuming, but it also perfectly secures your PC against any threats.
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After you install a third-party antivirus, Windows Defender will automatically turn itself off and your problem should be resolved.

Editor’s Note: This article continues on the next page with more methods to help you disable the Antimalware Service Executable. If you want to read more about the best antivirus solutions for Windows 10, check out our collection of guides.

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Frequently Asked Questions

This article covers:


I’m still struggling with msmpeng.exe eating my whole disk at 100%, plus memory. it’s the ms devil! can’t stop it, can´t remove it, CAN’T RESCHEDULE IT! I NEED TO USE MY COMPUTER, BUT IT TAKES UP FULL CONTROL. PLEASE, IS THERE SOMEONE TO PROVIDE ACCURATE ADVICE?

I’m not sure about anyone else but for me it doesn’t say “Windows Defender Antivirus”. Instead it shows up as “Microsoft Defender Antivirus”. Just letting you know in case anyone has the same thing.

This disabled windows defender on my computer but antimalware service executable is still taking up all of my disk and half of my ram

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