What’s Antimalware Service Executable? Why Is It A High CPU Disk Usage?

What's Antimalware Service Executable? Why Is It A High CPU Disk Usage?

Antimalware service file is a part of Windows Security that runs in the background. But sometimes, when an antimalware service executable uses too much CPU, it can hurt Windows 10 systems.

In this guide, I’ll explain what an antimalware service file is, why it uses so much CPU, and how you can make sure your Windows 10 computer doesn’t use too much CPU.

What’s Antimalware Service Executable?

Antimalware service executable is a Windows Security process that runs real-time security against malware.

cabecera_herramientas_antimalware_incibe-7622605Antimalware service application, also called msmpeng.exe, runs in the background so it can scan files and programs from time to time.

When a virus or other harmful attack is found by an antimalware service executable, it deletes or puts it in a quarantine folder.

Why does Antimalware Service Executable use up so much CPU?

The main reason that the antimalware service file uses too much CPU is that it runs constantly in the background.

While it’s running in the background, it checks programs and files and takes action when it finds something malicious.

the-best-antivirus-software-for-2023_8wwa-1247994Also, the antimalware service executable takes up too much CPU because it scans its own folder, C: Program FilesWindows Defender.

So, stopping the antimalware service executable from checking its own folder is one way to make it use less CPU.

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How To Keep Antimalware Service Executable From Using Too Much CPU?

You can keep antimalware service executable from using too much CPU by rescheduling Windows Security scans and stopping it from checking its own folder.

bakuwho5nxgsqp3tea5vkk-7514462Rescheduling scans won’t make them happen all the time, and stopping the executable from scanning its own folder will turn off real-time protection.

Solution 1: Prevent Antimalware Service Executable From Scanning its Own Folder


Step 1: Press the WIN key on your keyboard and select the gear icon to open the Settings app.

Step 2: Click on “Update and Security” from the menu tiles.

Step 3: Select “Windows Security”, then click on “Virus and threat protection”.

Step 4: The Windows Security app will open up. Under “Virus & threat protection settings”, click on the link that says “Manage Settings”.

Step 5: Scroll down to “Exclusions” and select the “Add or remove exclusions” link.

Step 6: On the next page, click on “Add an exclusion”, then select “Folder”.

Step 7: Paste “C:\Program Files\Windows Defender ” into the editor and click on “Select Folder”.

Step 8: Immediately after you click on “Select Folder”, a massive modal will appear – make sure you click “Yes”.

The folder selected will now be added to exclusions and will not be scanned.

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Solution 2: Disable Realtime Protection and Reschedule Scans

Step 1: Press WIN (Windows key) to open the Run Dialogue.

Step 2: Type “taskschd. msc” and click “OK”. This will open up the Task Scheduler app.

Step 3: Expand the “Task Scheduler tab”, “Microsoft”, and “Windows”.

Step 4: Scroll down and select “Windows Defender”.

Step 5: Right-click on “Windows Defender Scheduled Scan” and select “Properties”.

Step 6: Uncheck “Run with highest privileges” in the general tab.

Step 7: Go to the Conditions tab and uncheck everything there.

Step 8: Switch to the Triggers tab and click “New”.

Step 9: Schedule the time you want Windows Defender to run scans. Choose the frequency, date, and time, then click “OK”. Click “OK” again.

Step 10: Restart your computer. With this, the antimalware service executable should not eat up too many CPUs again.

Some Final Thoughts

The protection offered by the antimalware service executable is definitely important. This defense stops malware attacks so you can feel safe while using your Windows 10 computer.

If you try the two methods in this article to make antimalware service executable use less CPU and nothing seems to change, you should try turning off your Windows Security program forever.

But make sure you get another antivirus program so your computer won’t be open to threats.

We thank you for reading.