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Easy Solutions: Antimalware Service Executable High Disk/CPU Usage

Updated on Mar 09, 2018 by Brithny to Partition Manager

Summary:
Your computers are running slow because antimalware service executable takes up high disk usage. Read the three easy solutions on this page, and fix 'antimalware service executable high CPU usage' issue.

Antimalware Service Executable High CPU/Disk Usage

Windows 10 includes Windows Defender, Microsoft's built-in antivirus. The Antimalware Service Executable process is Windows Defender's background process. This program is also known as MsMpEng.exe and is part of the Windows operating system.
It's responsible for checking files for malware when you access them, performing background system scans to check for dangerous software, installing antivirus definition updates, and anything else a security application like Windows Defender needs to do. That's why it's very likely to take up huge disk, memory, RAM and even network bandwidth, draining computer resources, especially after getting a Windows 10 update.

antimalware service executable high disk usage

How Can I Fix Antimalware Service Executable High CPU/Disk Usage

If the Antimalware Sevice Executable process takes up high CPU on your Windows 10, don't worry.We have easy solutions for you to deal with it.

Solution 1. Change Windows Defender's Scheduling Options

Change Windows Defender's schedule is an effective way because the error is mainly caused by real-time protection feature. Follow the details below and fix 'antimalware service executable high disk usage' issue.

  • Press the Windows logo key + R at the same time to invoke the Run box.
  • Type taskschd.msc and press Enter.
  • Double-click on Task Scheduler Library > Microsoft > Windows.
  • Double-click Windows Defender in Windows. Then double-click Windows Defender Scheduled Scan.
  • Uncheck Run with highest privileges.
  • Uncheck all the items in the Conditions section. Then click OK.

With the steps above, your error should be fixed now.
If unfortunately, it doesn't help you, make sure to try the second solution below.

Solution 2. Add Antimalware Service Executable to Windows Defender's Exclusion List

1. Press the Windows logo key + I at the same time to open the Settings window.

2. Click Update & security.

click update and security

3. Click Windows Defender. Then click Add an exclusion in Exclusions.

add an exclusion to windows defender to fix the high disk usage

4. Click Exclude a .exe, .com or .scr process

select the option according to the picture

5. Type MsMpEng.exe. Then click OK.

type msmpeng.exe to add antimalware service executable to windows defender

Solution 3. Disable Windows Defender

  • Press Windows Key + R to open the Run Dialog Box.
  • In the Run Dialog Box, type regedit and click OK to open the Registry Editor.
  • In the navigation pane on the left, double-click the folders to navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender.
  • If you find a registry entry named DisableAntiSpyware, double-click it and set its value data to 1.

disable windows defender to fix antimalware service executable high disk usage

Note:

If you do not see a registry entry named DisableAntiSpyware, right-click in the main Registry Editor pane and select New > DWORD (32 bit) Value.

Name this new registry entry DisableAntiSpyware. Double click it and set its value data to 1.

Extra Help: Check Partition and Clear Up Junk Files 

For those who got this problem very recently, performing a disk check should be taken into account. 

In order to perfectly solve this case, we need a free tool to help us - EaseUS free partition tool. This professional tool can help get this work done, and here is the detail:

1. Download, install and run EaseUS Partition Master Free on your PC

Download Now

 Windows 10 is supported

2. Right-click the system drive and other partitions to check corrupted system files by clicking "Check partition".

check the partition to see the trouble of antimalware

3. Click and select: Check Partition Properties, Call Windows Chkdsk to fix errors, Surface Test to fix file systems. Click OK.

4. Let EaseUS Partition Master automatically check and repair system file errors for Windows 10. Click OK to finish the process.

5. Click Cleanup and Optimization > Select Junk File Cleanup > Click Analyze to scan and find junk files from your computer
6. Check and then choose found junk files to Clean up.

select the junk files cleanup to fix the high disk usage caused by antimalware

If you still have the problem with your disk/CPU usage issue, you can refer to fix 100% disk usage in task manager to know more solutions