The Antimalware Service Executable, also known as MsMpEng.exe, is a critical component of Windows Defender that runs in the background to protect your system from malware and other security threats.

I just noticed on my mom's computer that some "MsMpEng.exe" process (labeled "Antimalware Service Executable" and located under "C Program Files\Microsoft Security Client\") is consuming 100% of CPU.

The Antimalware Service Executable is a process you might see pop-up in Task Manager’s task list now and again, beavering away at … something. While it’s not always obvious what it’s up to, and the ...

It's normal for CPU usage to spike on your Windows computer when you're gaming or running resource-intensive programs. However, if you notice this happening even during basic tasks like browsing the ...