Windows 10: Antimalware Service Executable (Windows Defender)

I am running an industrial DAQ program (Data Acquisition Program) on a Windows 10 industrial PC. The PC does not get used for emails, internet browsing, it is just a stand-alone PC collecting data from field sensors via serial communications. The DAQ program runs perfectly until Antimalware Service Executable (Windows Defender) kicks in and everything on the PC slows down to a virtual standstill. For example, on Friday night (approx. 10:30 pm) it was noticed that the DAQ program was in a virtually stopped state, the collection of serial data was random with gaps of approx. 10 mins between polling (instead of the usual seconds). On checking Windows Task Manager it showed that Antimalware Service Executable was using approx 250mb of RAM and 10% of CPU. After 12 hours the DAQ program was still in a virtually stopped state and NOT operating as required with Antimalware Service Executable still was using approx 250mb of RAM and 10% of CPU.I then went to the Windows Defender settings and switched of Real Time Protection and hey presto the DAQ program instantly starting working perfectly again. Unfortunately, Windows 10 after a period of time switches Real Time Protection back ON and after a few days, the problem described above occurs again. Is there something wrong with the way Windows 10 Defender operates? This problem has been observed on 4 different Windows 10 PC's (with freshly installed operating systems). I can solve it by adding a Defender EXCLUSION of the whole C:\ drive but this isn't really a solution is it?

:)

 

Antimalware Service Executable problem

I am still having the problem even with the latest prerelease build. The Antimalware Service Executable process is often running and taking a lot of CPU, disk and memory. The same The Antimalware Service Executable -> Windows Defender Service ...
Too often the PC (an I7 one, 8 GB EliteBook HP) is stuck and even the response of a keyboard entry is very slow!!

Any suggestions?

 

Antimalware Service Executable problem

I was having the same issue like for weeks on my HP Probook Ci5 12GB, the Antimalware Service Executable process was eating up massive CPU, DISK and RAM. After all the hard time I got searching the solution I finally landed on

this article which helped me.

 

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.