Msmpeng.exe Antimalware Service Executable
This will also stop Antimalware Service Executable from freezing computer system’s performance. Method #3 Exclude The File MsMpEng.exe. Open the Task Manager by this combination of keys CTRL+SHIFT+ESC. Next, search for MsMpEng.exe (Antimalware Service Executable) process. Most automatic scans shouldn’t take that long, so if you’re seeing that your computer is running slow for long periods, it could be that Windows Defender is spending a lot of time scanning a directory or a process that doesn’t need to be checked.
read this post:
The stock answer for this is below. When MSMPENG consumes excessive CPU or memory, it typically indicates a conflict, usually with other security software, though it can be a driver or a process that should not be conflicting that causes MSMPENG to go nuts.
Prior Security Software?
Any security software still installed?
A possible reason for this problem is that you have conflicting security software installed fully or partially on the PC. Remove all other security software from the PC.
You may need to use a cleanup tool to remove your prior security software:
http://social.answers.microsoft.com/Forums/en-US/msestart/thread/407bf6da-c05d-4546-8788-0aa4c25a1f91
If that fails to resolve the problem, open an email support case:
To open an email support case, start here:
https://support.microsoftsecurityessentials.com/
The following may also assist in isolating the cause of the problem (performed when the problem is happening - that is when memory usage is excessive or CPU usuage by the process is unusually high):
Dump a list of the currently running processes
Vista/Windows 7 –
Type command in the search box and right click command.exe and select “Run as administrator”
Type TASKLIST /V /FO TABLE > t.txtand press enter
A file called t.txt will be written to disk in the folder you ran the command from.
Open the file and copy and paste the results into the forum reply form. If you are working with support , you can send this text file to them.
Run the command FLTMC INSTANCES from an elevated command window (and get the output)
Vista/Windows 7 –
Type command in the search box and right click command.exe and select “Run as administrator”
Type FLTMC INSTANCES and press enter
Copy the results to the clipboard by clicking the icon in the upper left of the window and selecting edit/mark, highlighting the results text, and then edit/copy
Msmpeng.exe Antimalware Service Executable Windows 10
Paste the results to a new Notepad text file, directly into the forum reply form or into any text editor
Run pslist from an elevated command window (and get the output)
Vista/Windows 7 –
Type command in the search box and right click command.exe and select “Run as administrator”
Typelive.sysinternals.comtoolspslist -x MsMpEngand press enter
Copy the results to the clipboard by clicking the icon in the upper left of the window and selecting edit/mark, highlighting the results text, and then edit/copy
Paste the results to a new Notepad text file, directly into the forum reply form or into any text editor
Microsoft Antimalware Service Executa…
-steve
windows 7 8 gigs ram 750gb harddrive, MSE, windows firewall, malwarebytes(on demand scanner)