The Antimalware Service Executable is the process that Windows Defender executes in the background while it’s running in your pc. The Windows Defender is the free antivirus system that comes with all the installations of Windows 10 and is the upgrade version of the Microsoft Security Essentials that came with Windows 7. The process name is Antimalware Service Executable, but the file itself is called MsMpEng.exe. You can see this process if you open the Processes tab in the Task Manager.

What is the Windows 10 Antimalware Service Executable?antimalware service1

As part of the security options that Microsoft is implementing, the Windows Defender takes the places as the place as its antivirus and antimalware system, offering a build in protection to all of the Windows 10 users. This can help people who forget to install an antivirus or have slower CPU and don’t want to install one.

The Antimalware Service Executable is the service that Windows Defender runs in the background while it does its work. Windows Defender is always looking for malware or viruses in your files, updating its security system, scanning for malicious software, etc. and during all this process, the MsMpEng.exe is running in the background.

If you want to see if your Windows Defender is doing something, you can check your Task Manager and look for Antimalware Service Executable or the MsMpEng.exe. If it is running, your antivirus is doing something.

Why is the Antimalware Service Executable running on my pc?

This service will be running as long as the Windows Defender is working with your files. You don’t have to worry about it, when the antivirus finish whatever task it were doing, the process will disappear from your Task manager.

This process will launch automatically, and you can launch it manually it if you performs a system scan with Windows Defender.

Why this process is using so much disk resources?anti malware software2

The Windows 10 Antimalware Service Executable uses as much CPU resources as any other antivirus system. While you navigate through your folder and files, the process will look for viruses and malware, and it does it too when a new external device is connected to your pc.

The automatic scans only runs when you are not using your pc, so you will not see the process running in the background for this task. Other thing that will make the Antimalware Services Executable process appears is the download and installation of new updates for the virus database and other security system related updates.

In other words, this process will user your CPU resources if:

  • It’s performing a background scan (only when you are not using your pc)
  • It’s downloading and installing updates
  • It’s looking for malicious software
  • It’s looking for virus when a new storage devices is plugged in.
  • If you search through your folders and it has new files.

So, it’s normal for this process to use CPU resources, just like any other antivirus system.

Can I disable the Antimalware Service Executable?

Theoretically, you can disable it, but is not recommended at all. Well, you can disable it but it will automatically enable again if you don’t install another antivirus program. This antivirus system offers you a way to stay protected from virus and other malicious software and again, we don’t recommend you to disable it.

The only way to disable the process permanently is to install another antivirus. This way, the windows defender will disable itself automatically. You can also have both antivirus by enabling periodic scans in the Window Defender Antivirus Options.

Can the Antimalware Service Executable be a virus?

No, because the Antimalware Service Executable is part of the Windows Defender antivirus system, so it’s unlikely to be marked as a virus. There are no online reports of any malware or virus disguising as the Antimalware Service Executable, so the chances to it for be a virus are minimal.

This process will be running as long as you have the Windows Defender installed and running like a normal antivirus.

If you really want to make sure, you can always download another antivirus system of your preference and perform a deep scan of your system.

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