How to Fix Antimalware Service Executable High CPU Usage

What is Antimalware Service Executable?

Windows 10 comes bundled with the Microsoft Windows Defender. The Microsoft Windows Defender Antivirus System constantly scans files, connections, similar applications in real time. The Antimalware Service Executable (MsMpEng.exe) is associated with the Windows Defender Service.

The Antimalware Service Executable (MsMpEng.exe) is also infamous for the high CPU usage. When your system is performing a complete scan, your system will undergo constant lagging or delayed response. This is because the CPU is captured by the Windows Defender.

If you use Microsoft Windows Defender and encounter high CPU usage then here’s a quick guide to fix high CPU usage issues on Windows 10. In this article, we’ll show you a few simple steps to block Antimalware Service Executable from using your system’s resources.

If you open the Windows Task Manager you will find a process called Antimalware Service Executable (msmpeng.exe). This msmpeng.exe process enables Windows Defender to continuously monitor your PC. The msmpeng.exe search for threats and provide real-time protection against malware and cyber attacks.

This process relies heavily on the CPU which uses the available resources. As a result, you may experience lag, delays, and other system interruptions when it is running. Follow these steps to prevent the high CPU usage issue from repeating again:

#Fix 1: Change Windows Defender’s Scheduling Options

The high memory usage caused by Antimalware Service Executable happens when the Microsoft Windows Defender is running a full scan. To fix this, re-schedule the scans when you’re less likely to use your PC.

1. To reschedule open the Start menu and type “Task Scheduler”.

2. Click on Task Scheduler Library and navigate to Library/Microsoft/Windows/Windows Defender

3. Now click on the Windows Defender Scheduled Scan and then click on the Conditions.

4. Uncheck all Options and click OK. This will clear your scheduled scans.

#Fix 2: Disable Windows Defender

If the problem continues after applying the first fixe, you can disable Windows Defender. Note: Disabling Protection exposes you to cyber attacks.

1. Press Windows Key + R to open the Run.

2. Type Regedit to open the Registry Editor.

3. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender.

4. Set DisableAntiSpyware registry’s Value Data to 1.

#Fix 3: Scan For Malware

Another likely cause of the frequent lagging or disruption of the system can be the presence of malware in the system. There is a possibility a malware has infected the MsMpEng.exe process. Try scanning your PC with an anti-malware application and delete any malware on your PC.

#Fix 4: Add Antimalware Service Executable to Windows Defender Exclusion List

1. Go to the Windows Settings (Windows Key + I).

2. Click Update & Security and then click on Windows Defender.

3. Now click on Add an exclusion in Exclusions.

4. Select Exclude a .exe, .com or .scr process and add MsMpEng.exe.

We hope these methods will help you to fix the Antimalware Service Executable High CPU Usage issue. Learn more about the Windows Defender HERE

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