How To Fix ‘Antimalware Service Executable’ High CPU Usage

The term ‘Antimalware Service Executable’ denotes a process MsMpEng which is used by Windows Defender Program. Now that you are reading the blog on high CPU usage, it could be due to various reasons like the real-time feature which makes the scanning of files constant and keeps the system protected in real-time.

Apart from this, it possesses a full scan feature as well which scans all the files whenever the computer wakes up or gets connected to a network. One shall note that the system tends to experience lag or may face delays in response as the CPU is covered by the Defender. Moreover, you need to know that Window Defender itself is an in-built antivirus that comes in handy with Windows.

So now we need to understand how to Fix Antimalware Service Executable High CPU usage as the problems are nearly detected already.

Fixed: ‘Antimalware Service Executable High CPU Usage 

Fix 1: Disable Real-Time Protection

As we have discussed that Antimalware Service Executable could show issues because of the real-time feature, it is required that the feature is disabled. This particular feature constantly scans the computer and consumes the CPU storage, leading to memory usage. Although this method is turning off the real-time protection of Windows defenders, it has to be noted that your computer could act vulnerable. This requires the best antivirus software on Windows which helps in protecting the system without hogging the space and resources.

Step 1: Go to Start menu > Settings > Update & Security.

Step 2: Select Windows Security > Virus & Threat Protection > Manage Settings.

Step 3: ‘Turn off Real-time protection’ setting.

And you are done for the time being. 

Fix 2: Changing Windows Defender’s Scheduling Option

For this method, follow the steps mentioned below.

Step 1: Press Windows key + R at the same time and your Run box will appear on the screen. Here, type taskschd. msc and hit enter.

Step 2: Open ‘Task Scheduler Library’ > Microsoft > Windows.

Step 3: Expand Windows Defender here and double click on ‘Windows Defender Scheduled Scan’.

Step 4: Unmark the option mentioning ‘Run with highest privileges.

Step 5: Open ‘Conditions’ from the top and here uncheck all the items as well.

Step 6: Click OK to finally complete the whole process.

If the option doesn’t go well for you, try out the next one to fix Antimalware Service Executable high memory usage.

 Fix 3: Update Drivers

If the system is running slow and CPU usage is still higher than usual, it is recommended to update all the drivers side by side. It is the latest driver which can actually manage the computer stable and smooth. You can do this but there are two ways.

In Manual update, go to the manufacturer’s website and search for recent drivers of the device. However, this method takes a longer time than the manual one and you can look forward to Advanced Driver Updater which can easily update a particular driver or all the drivers at the same time.

Fix 4: Adding Antimalware Service Executable to Windows Defender Exclusion List

Step 1: Press the Windows key on the keyboard along with me at the same time and the settings window will open up.

Step 2: Click Update & Security.

Step 3: Under Windows security and click Virus & Threat Protection.

Step 4: Click ‘Manage Settings’ under the bar.

Step 5: In the area of Exclusions, click ‘Add or remove extensions’.

Step 6: Click ‘Add an exclusion and choose ‘Process’ here.

Step 7: Here, type ‘Antimalware Service Executable’ and click OK.

It is expected that the error should be fixed by now and if not, follow the next step.

 Fix 5: Use An Alternative Antivirus

Since an alternate antivirus can protect the system in a much better manner without eating up resources, we recommend you try the Systweak antivirus on your computer. It provides real-time protection to the system without bothering the resources. It even helps in cleaning unwanted startup items as well as providing malware protection. With that, you can keep yourself free from ransomware, viruses, and any kind of malware trying to enter your system.


We hope that you have found out the fixes of Antimalware Service Executable High CPU usage by reading the blog above and you will be able to resolve the issue by now. Did you resolve the issue by yourself? If yes, share your views with us in the comments section below and if not, share your queries with us as well.


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