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Antimalware Service Executable 100% disk usage


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#1 AngryHan

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Posted 20 September 2014 - 09:20 AM

Every time I launch a large application such as a game, I see Antimalware Service Executable eat up 100% of my disk usage (between 10-50 MB/s). This grinds my computer to a halt and the game doesn't launch for about 10 minutes.

 

Any idea why it does this and how I can stop it?



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#2 buddy215

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Posted 20 September 2014 - 10:09 AM

In the link below you will read all about the problem you are experiencing and advice on how to fix it. I've copied what

I think is possibly the best solution but if you upgraded from Windows 7 then you will need to read further.

Can one prevent Antimalware Executable to start hogging CPU for - Microsoft Community

 

QUOTE:

You can disable the scheduled scan task by right-clicking and selecting “Disable”, but that won’t stop the other Automatic Maintenance tasks from running shortly after startup; so what you should do is reschedule Automatic Maintenance for a time when the PC will be on but not in use (by clicking on the “Change maintenance settings” link in the Action Center) and see if that makes any difference.

 

 

Since Automatic Maintenance runs strictly on idle-time in its default mode, and stops almost immediately with any user activity, it shouldn’t be causing a problem like this – while on the other hand, the excessive CPU utilization would make perfect sense if you had upgraded without uninstalling MSE, or if the old Windows Defender service somehow wasn’t disabled with the upgrade. But I can’t really tell what’s going on there, because you appear to have leftover scheduled scan tasks from both of those programs.


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#3 AngryHan

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Posted 22 September 2014 - 04:19 AM

Hm well it turned out to be because of a new game I got, that triggered what I described when I tried to run it. Adding it to the exclusions list fixed it.



#4 MamaBear2015

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Posted 19 July 2017 - 01:45 PM

I'm having this problem now too, with Windows 8.1. I read that link and tried changing the settings. It helped some but not all the way.  My main concern is hd longevity if this keeps up.

 

...

I found out what it is. I found another thread saying to disable real time protection in Defender. I did and the hd thrashing stopped!

 

So now, how can I enable real time protection in Defender ( a good thing? ) without it thrashing the hd with 100% spikes all the time?


Edited by MamaBear2015, 19 July 2017 - 03:28 PM.


#5 dc3

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Posted 29 July 2017 - 10:20 AM

Are you running Malwarebytes 3. or the 2.2 version?  If this is the 3. version you can run it as your antivirus.  The quote below is Malwarebytes description of the Malwarebytes 3.

 

Malwarebytes 3 is a next-generation antivirus replacement. Malwarebytes 3 is the first of its kind for home users, employing four independent technology modules—anti-malware, anti-ransomware, anti-exploit, and malicious website protection—to block and remove both known and unknown threats.

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#6 MamaBear2015

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Posted 04 August 2017 - 12:28 PM

 

Are you running Malwarebytes 3. or the 2.2 version?  If this is the 3. version you can run it as your antivirus.  The quote below is Malwarebytes description of the Malwarebytes 3.

 

 

 

Malwarebytes 3 is a next-generation antivirus replacement. Malwarebytes 3 is the first of its kind for home users, employing four independent technology modules—anti-malware, anti-ransomware, anti-exploit, and malicious website protection—to block and remove both known and unknown threats.

 

I am running 3.1.2 and somehow with MWB support help, we got this fixed, and it's playing nice with Defender now. I was told in another forum, that they each find various things, and neither one is perfect by itself. Is that true?



#7 dc3

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Posted 04 August 2017 - 12:46 PM

These are called false positives.  Malwarebytes 3 is new enough that it isn't surprising to see this.  If you are concerned and wish to check this against another program you could run Emsisoft Emergency Kit


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