It took over five years, but Microsoft has finally fixed a bug that caused Windows Defender to drain CPU resources when Mozilla’s Firefox browser is active. In 2018, Mozilla staff reported that ...

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 ...

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.

Why it matters: Microsoft has released a crucial bug-fixing update to its Windows Defender antimalware application. Its arrival means that some unlucky Firefox users should now get a much smoother and ...

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.

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 ...

There are two common factors that can cause Antimalware Service Executable to take up too much CPU resources, from its real time feature and Full scan feature. Real time protection Feature is ...