Method 3: Add Antimalware Service Executable to Windows Defender Exclusion List There have been reports by users that adding MsMpEng.exe to the exclusion list of Windows Defenders solves the problem.

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% ...

MsMpEng.exe is a part of Windows's Malware Protection Engine. It may also be labeled as antimalware service executable. It lies at the core of Microsoft's Windows Defender antivirus service.

The core software part of Microsoft Defender is the Antimalware Service Executable, which can be found in the MsMpEng.exe list in the Task Manager. The anti-malware service executable scans your ...