Here I was playing some Far Cry 2 on my machine (so not exactly a resource hog these days), when suddenly the screen goes black, I can't Ctrl Alt Delete, or get the task manager or anything, and the ...

5-Year-Old Windows Defender Bug That Caused CPU Spikes on Firefox Finally Fixed The fix reduces CPU usage from Microsoft's MsMpEng.exe by as much as 75% while using the Firefox browser, according to a ...

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.

When using Windows Performance Recorder (WPR), which checks system and application behavior and resource usage, if the CPU usage rate of 'MsMpEng.exe', which is the Microsoft Defender execution ...