Windows 10: Anitmalware Service Executable

I have recently been plagued with frequent intermittent slowdowns on an old home-built desktop. It might take the form of a delay in opening a program or copying text from Word MS365 or pasting some text or even selecting something onscreen. Whatever request I've asked the computer to do see above will eventually take place but it might be many seconds less than a minute before that happens. When I see that there appears to be no response to the task I can go to the taskbar and summon Task Manager. As soon as TM comes up usually immediately I can see that Windows Defender Smart Screen orAnitmalware Service Executable MsMpEng.exe, the worst offender, Power usage trend is "Very High". As soon as the "Very High" condition changes to "Very Low", things start moving again.


A suggestion found online said to run taskschd.msc and step down to "Windows Defender" and change the scheduling to something that would prevent that program from running while the computer was being used. I set it to refrain from running until the computer was idle for 1 hour. This seemed to help a great deal. Of course, I have to do this every time I go to use the computer.


My question then is why is this happening now when I was never aware of it happening in the past? I am running Version 1903 OS Build 18362.900. Updates are set to automatic and the computer is always on.

:)

 

How do I turn off "Antimalware Service Executable"?

Probably a Scheduled scan is a reason why it is taking up so much resoruces. GR

GreginMich's excellent reply here should help:

https://answers.microsoft.com/en-us/protect/for...

 

Windows Defender | Anitmalware Service Executable high CPU use

The Anitmalware service, or MsMpEng.exe, hogs a big part of my CPU after every time I wake the computer. Now I dont mind Windows Defender, but I do mind processes that uses too much system resources.

This behavior started recently, after I started to sleep my computer. It did not happen when I shut down the computer. It goes away if I disable "Real time protection".





One fix I read about was altering the conditions on the task, but that is grayed so I might need to fix this in group policy settings I believe.





Any help / tips or advice is appreciated.

 

Antimalware Service Executable - How do I stop it completely?

Hello Aniax,

As you are facing issues with high performance usage by Antimalware Service Executable service on your device, we will help you with this issue.

I would like to inform that Antimalware Service Executable is a part of Windows Essentials.

I suggest you to refer to the below post and check if your issue matches with the same. If so, try the troubleshooting steps suggested by
GreginMich replied on November 6, 2015 and check if it helps.

How to stop Antimalware Service Executable from hogging cpu on Windows
10

Hope it helps. Get back to us for further assistance on this issue. We will be happy to help you.

Thank you.