How do I fix the high CPU usage issue with Windows 11 Antimalware Service Executable?

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What is "Antimalware Service Executable"?

Windows includes an antivirus program called Windows Defender. If you've chosen this as your primary option, you'll see a background process called MsMpEng.exe or Antimalware Service Executable when you open Task Manager in Windows 11. If you open Task Manager, you'll notice that the Antimalware Service Executable is running in the background.

Why is "Antimalware Service Executable" consuming high CPU usage in Windows 11?

If your antivirus is using a lot of CPU resources, it's likely because it's actively scanning your computer for malware. If you recently updated your computer or installed large files, Windows Defender might take some time to complete a full scan.

How to Fix High Memory Usage by Antimalware Service Executable (5 Ways)

In this section, we will list 5 ways to stop the Antimalware Service Executable. Before applying these solutions, we recommend downloading another antivirus alternative. Otherwise, your device might be at unexpected risks.

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1. Disable Windows Defender Antivirus via Group Policy Editor

Step 1. Press Windows + R to open the “Run” window, type in gpedit.msc, and click “OK” or hit Enter to launch the Local Group Policy Editor.

Step 2: Go to Computer Configuration > Administrative Templates > Windows Components > Windows Defender or Windows Defender Antivirus

Step 3: Navigate to the right pane. Click on Extensions, and you should see an option like Turn off Windows Defender Antivirus.

Step 4: Double-click it, and then select “Enabled.” Click “OK.”

2. Turn off Real-Time Protection

Step 1: Press Windows + R to open the Run dialog box, then type gpedit.msc.

Step 2: In the Local Group Policy Editor, go to Computer Configuration > Administrative Templates > Windows Components > Windows Defender Antivirus > Real-time Protection.

Step 3. Double-click Turn off Real-time Protection, and select Enabled.

3. Turn off Windows Defender via the Registry (if available)

Aside from using the Group Policy Editor, another option would be to start disabling Windows Defender through the Registry. However, if you're not a seasoned hand and are not aware of the dangers of tweaking it, we advise you to move on to the next solution.

Step 1: Press Windows + R to open the Run dialog box, type regedit, and click OK to run Registry Editor.

Step 2: Navigate to the HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender path

Step 3. Double-click on DisableAntiSpyware, and set the Value data to 1, then click OK.

If the Windows Defender Disableantispyware entry is not in the registry, you can create a new one by following these steps:

Step 1: Right-click in the blank area, select New, and then from the context menu choose DWORD (32-bit) Value. Name it DisableAntiSpyware and hit Enter.

Step two: Go back to step three of the previous part.

4. Reschedule Windows Defender scans

1. Press the Windows key + R to open the Run dialog box. Type taskschd.msc, then press Enter.

Step 2: Navigate to Task Scheduler Library > Microsoft > Windows

Step 3: Expand Windows Defender, click on Windows Defender Scheduled Scan, and then click Properties on the right.

Step 4. In the Windows Defender Scheduled Scan Properties window, go to the Security options section and uncheck Run with highest privileges.

5. Click on the Conditions tab, and uncheck all the search boxes under Free, Power, and Network. Click OK.

< strong > Step 6. Open the < strong > Properties window again, select the < strong > Triggers tab, and click < strong > New.

In the preferences, select your preferred option, and click OK.

Add the program to the exclusion list

Step 1: Click the Windows logo in the bottom-center of the screen.

Step 2: Go to Settings > Update & Security > Windows Defender

Step 3. Under the Excluded items tab, click Add Exclusion.

Step 4. Scroll down and select Exclude .exe, .com or .scr processes.

Step 5: Type MsMpEng.exe, and then click OK.

If the above five methods resolve the high memory usage issue with your antivirus executable, feel free to click the social buttons below and share it with others who might need it.

Additional Tip: Boost Your Computer's Performance

How to partition a hard drive in Windows 11?

When using a computer, we not only need to protect it from viruses but also pay attention to the health of our hard drive. Disk Partition Master is a powerful disk partition software that can enhance your disk performance. It features functions like adjusting/moving partitions and converting MBR to GPT in Windows 11.

[1] The "Resize/Move" option allows you to adjust the space of the selected disk partition as needed. Right-click on "Resize/Move" and you can shrink a volume, extend another volume, or create unallocated space for special purposes.

[2] The "Clone" function is intended to create an exact copy of a hard drive or partition, with the same layout and content. You can use the "Clone" feature to upgrade your hard drive, replace a failed one, back up drive data, and more.

[3] "Delete" is the usual way to remove unwanted disk partitions, rendering the space unallocated.

[4] Formatting is useful in many situations. By formatting a drive or partition, you can change the file system, fix some types of damage, and sometimes remove viruses and malware.

[5] The “Allocate Space” feature is useful when one partition on a computer has too much space, and another does not have enough.

[6] The Migrate OS feature lets you easily move your Windows system drive to another disk without having to reinstall.

[7] Conversions between GPT and MBR, NTFS and FAT32, as well as basic disk and dynamic disk are getting more popular among Partition Master users. Apart from all the advantages listed above, there are still many practical features waiting for you to explore.

How do I enable Windows Defender in Windows 11?

If you turned off Windows Defender and want to turn it back on to protect your data, you can do so by following these steps.

Step 1: Click the Windows icon at the bottom of the screen to open the Start menu, then click Settings.

Step 2. Type Windows Security settings in the search box.

Step 3: Go to “Windows Security” > Click on “Virus & threat protection” > Under “Virus & threat protection settings,” click on “Manage settings” > Scroll down and click on Privacy settings, and enable the four toggle switches.

4. Then, go back and click on "Virus & threat protection" again > "Manage settings" > turn on "Real-time protection" > click "Yes."

In the Scanning options section, click Deep Scan.