What It Is, And Do You Need It Running On Your PC?

The service code ‘MsMpEng.exe’ is a part of Windows’s Malware Protection Engine, also known as Windows Defender. It uses high computer processing power (CPU) as it constantly runs in the background scanning the system for malware. It might cause system lags, but ensures security. It could use high CPU due to outdated Windows Defender, conflicts with other components, low hardware resources, or corrupt system files.