What Is MsMpEng.exe? – Process/file: msmpeng.exe

File/archive: MsMpEng.exe
Process/task name: Microsoft Windows Defender Antispyware

The process and file msmpeng.exe is the Microsoft Windows Defender Antispyware. It is a Microsoft program that is responsible for scanning the computer for and prevents malicious programs (spies, worms and Trojans). The process is installed when Windows Live OneCare is installed.

The activity of msmpeng.exe can be verified from the Windows Task Manager.

Microsoft Windows Defender Antispyware is based on the GIANT Antispyware program.

It is located in:
C:\Program Files\Windows Defender\MsMpEng.exe

Many people complain that the program is not very effective and slows down the computer due to excessive CPU usage. The solution is to uninstall the program and try another.

Do you want to know if MsMpEng.exe is a virus or malware? See: Is MsMpEng.exe a virus?

Errors or problems with the MsMpEng.exe file? Write to us and we will reply as soon as possible. IMPORTANT: remember to say the version of your operating system, the time and/or place where the error appears, and any other information that you think is relevant to help find the solution.