Windows 10: High CPU usage by Antimalware Service Executable on Start-up

Hi there,


I have some troubles regarding the Antimalware Service Executable which is eating my CPU till the computer grinds to a halt.


This seems to occur on start-ups only, but I would like to know if there is anything I could do about it, as not being able to use the computer on start-up basically means wasted time.


I noticed this only recently, after a failed reset of the system, and I had to do a clean installation of Windows through a USB Flash Drive. Could this have anything to do with the situation I am facing?


Lastly, I tried to use the Task Scheduler to prevent 'Run with highest priority' but it does not seem to do anything to prevent this. I would like to continue to use Windows Defender instead of a 3rd Party Antivirus Software, so I do not want to disable the Defender entirely.


Many thanks for reading, hope you all are staying safe and healthy in this period!

:)

 

Antimalware Service Executable High CPU

I am experiencing high CPU usage on the Antimalware Service Executable on my Surface Pro i7 1 tb (2017). This has been going on for a couple of months. It makes my computer almost unusable. The CPU sits at 100% any time I try to use it. The CPU has
over 50% usage when nothing is being run in the foreground all the time (24 hours a day). The April update was just installed and the Antimalware Service Executable is still running at over 40% of the CPU utilization.

 

Antimalware Service Executable, high cpu, memory and disk usage

I'm having the high CPU usage and it appears that antimalware service executable is to blame. Yes, I had Norton installed and used the removal tool. What do you think could be the problem?

 

high CPU usage antimalware service everytime on Start up

Hi Casemiro,

As this is your only line of defense, we can change the timing in which this does a scan. Right now the task is probably set to when you start up your computer - we could change it to later at night or some other time if you'd like?

https://blog.emsisoft.com/en/28620/antimalware-...

https://appuals.com/how-to-fix-high-cpu-usage-b...

Seeing above you can change the task scheduler event; do not remove Windows Defender as this is your only defence.

There some changes you can make to ensure that this doesn't run at max CPU usage.

Let me know if this fixes your issue.