Windows 8 : antimalware service executable hogging CPU

Subliminal Aura · 27 Feb 2013 at 10:58

Noticed something odd this morning. Locked the PC and walked away, came back to find the fans spinning at full speed because the cpu was at 100%

After some investigation with resource monitor I discovered that the culprit was 'antimalware service executable'

Strange thing is that this only kicks in when the monitors are in sleep :confused:

Has anyone else experienced these issues ?

Another thing I noticed is that the monitors are set to sleep after 20 minutes but go to sleep very quickly if the desktop is locked (Windows+L) - This may be a 'feature' of windows 8 :confused:

theheyes · 27 Feb 2013 at 11:05

Its probably just Windows defender kicking in when the computer is idle.

Subliminal Aura · 27 Feb 2013 at 11:07

theheyes said:
Its probably just Windows defender kicking in when the computer is idle.

Why ? I don't want it to ! I've got the scheduler for it turned off

TwsT · 27 Feb 2013 at 11:52

Subliminal Aura said:
Noticed something odd this morning. Locked the PC and walked away, came back to find the fans spinning at full speed because the cpu was at 100%

After some investigation with resource monitor I discovered that the culprit was 'antimalware service executable'

Strange thing is that this only kicks in when the monitors are in sleep Has anyone else experienced these issues ?

Another thing I noticed is that the monitors are set to sleep after 20 minutes but go to sleep very quickly if the desktop is locked (Windows+L) - This may be a 'feature' of windows 8

if you've locked it why wouldn't you want them to turn off xD