How to Fix Antimalware service executable High CPU Usage.

antimalware service executable

Antimalware service executable:

 The Antimalware Service Executable method takes up a high CPU on Windows 10. Many Windows 10 users also describe this problem. More importantly, you can correct this problem by yourself without asking a professional for help.

In this article, you’ll discover what Antimalware Service Executable is and how to settle its high CPU usage problem.

Antimalware service executable high CPU:

Windows Defender is built-in anti-virus software, an anti-malware solution for Windows 10. You can also use controlled folder access to protect users from ransomware. Windows Defender works very well as long as you follow all the best practices on how to use your computer and how to be careful on the Internet.

However, Windows Defender’s CPU usage is sometimes really high, ranging from 30% to 90%. When you open Task Manager, you will see the actual CPU usage of Windows Defender next to “Antimalware Service Executable“.

The Antimalware Service Executable or MsMpEng.exe process is a real-time protection module for Windows Defender. Due to various reasons such as system crash, malware infection, MsMpEng.exe can use a lot of CPU resources to slow down the normal operation of your system.

Antimalware service executable
Antimalware service executable

If you are facing this issue, here’s how to fix the high CPU usage of b in Windows 10.

Method 1: Check for system infection

The first thing to do to fix Windows Defender’s high CPU usage checks to see if your system is infected with a virus, malware, or adware. This is because the system may be infected and Windows Defender is actively trying to remove the infection from the system, resulting in high CPU usage.

  1. To scan your system using Windows Defender, search for Windows Defender Settings in the Start menu and click the Virus and Threat Protection option.
  2. You need to perform a deep scan or a full scan. In the Threat Protection window, click the Run New Advanced Scan link that appears below the Scan Now button.
  3. Now select the Full Scan option and click the Scan Now button.

Depending on your system, it may take several hours for the scan to complete. Therefore, please wait until the scan is completed. If Windows Defender detects threats, they will be removed automatically.

We also recommend scanning your system with Malwarebytes Anti-malware. After removing the malware or verifying that your system is not infected, proceed to the solution below.

Method 2: Exclude Windows Defender folder

Windows Defender always runs in the background While checking various system processes, it constantly monitors your system for threats such as viruses, malware, and Trojan horses. This is commonly referred to as real-time protection.

Windows Defender monitors everything, so it includes the process, itself, in the scanning process. This can create loops that look like situations where you are trying to scan for anomalous behavior, which causes high CPU usage of the antimalware service executable high memory. Interestingly, you can add Windows Defender itself to the Windows Defender exclusion list to avoid high CPU usage of MsMpEng.exe.

When you add Windows Defender to the exclusion list, Windows Defender does not constantly scan itself, which results in high CPU utilization for Windows Defender.

Personally, this is the way it worked for me. Therefore, it may work for you as well.

  1. First, search for and open Windows Defender Settings in the Start menu.
  2. In the Windows Security window, click the Virus and Threat Protection option under the Protected Area section that appears in the right panel.
  3. In this window, select Virus and Threat Protection Settings, scroll to the bottom, and click the Add or Remove Exclusions link under the Exclusions section.
  4. Now you can add folders, files, file types, or processes to your Windows Defender exclusion list. Click the Add Exclusion button and select the Folder option.
  5. In the Select Folder window, C: ProgramData/Microsoft select the Windows Defender folder and click the Select Folder button to add the Windows Defender folder to the exclusion list.

Note: You may see a UAC (User Access Control) prompt. Click the “Yes” button to continue.

That’s it. You have successfully eliminated Windows Defender from the scanning process. Rebooting the system will no longer result in high CPU utilization for antimalware service executable processes.

If you are still experiencing high CPU utilization issues with your antimalware service executable, you can also follow these steps:

Antimalware service executable
Antimalware service executable

Method 3: Turn off real-time protection

If the above method doesn’t work, the last effort you make will disable Windows Defender’s real-time protection. The high CPU utilization of Antimalware Service Executable is due to real-time protection, so disabling it will resolve the issue immediately.

However, we do not recommend disabling real-time protection together or for an extended period of time. Treat this method as a temporary fix only. Also, re-enabling real-time protection resurfaces Windows Defender’s high CPU issues.

  1. First, open Windows Defender by searching for “Windows Defender Security Center” in the Start menu. Go to Virus and Threat Protection and click the Virus and Threat Protection Settings option.
  2. In the right panel, toggle the button under Real-time Protection to Off. When the UAC (User Access Control) prompt appears, click the Yes button to continue.

That’s all. Windows Defender disables real-time protection and eliminates the problem of high CPU utilization of antimalware service executable not stopping. Again, this is just a temporary fix. Do not disable real-time protection for long periods of time.

Method 4: Use a third-party antivirus solution:

If the above method doesn’t work, and because the CPU usage of Windows Defender is so high that you can’t use the system, throw Windows Defender into a third-party antivirus application such as Avast, AVG, Malwarebytes Anti-malware. can do.

Download and install Avast or AVG and Windows Defender will be automatically disabled, resulting in high CPU usage of msmpeng.exe. In addition, it is a bit more secure than Windows Defender. In addition, install Malwarebytes to improve protected malware.

Method 5: Scan For Malware

There is a possibility that malware has affected the MsMpEng.exe process. Analyze scanning with an anti-malware application like Malwarebytes and AdwCleaner to scan for and remove any malware which could be already on your PC.

Method 6: Eliminating Bad Updates

Sometimes, Windows Defender obtains poor definition updates and that makes it to identify certain Windows files as viruses. Hence, in this step, we will be eliminating these updates using Command Prompt. To do that:

  1. Press the “Windows” + “R” keys together to start the run prompt.
  2. Type in “cmd” and press “Shift” + “Ctrl” + “Enter” together to give administrative rights to the command prompt.

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