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.

Struggling with high CPU usage from Service Host Network in Windows 11? Discover proven fixes to reclaim your PC ...