Can one prevent Antimalware Executable to start hogging CPU for extended periods each time some network adapter gets active?

Anonymous

One of the most annoying habits in Windows 8 is, that the built-in "Antimalware Service Executable" (part of "Windows Defender") starts hogging my device's CPU with 60-70% (and 100% disk) for extended periods EACH AND EVERY time after I wake it up.

I wouldn't mind if it starts doing its business IN THE BACKGROUND but when I wake my device up from standby it's usually to get something done NOW and thus I find it increasingly unacceptable, that the system is always taken over by Window's defender exactly then and for up to several minutes! If I don't find a solution soon to throttle this beast, then I will disable Defender altogether!

What I noticed is, that this process seems to be actually triggered not by the system waking up, but by the network adapter becoming active. And actually, this happens each and every time ANY network adapter gets active! E.g. if my system has NO network connection at all and I plugin the network cable the Antimalware Service Executable starts. When - after it has settled again - I additionally enable Bluetooth then the Antimalware Service Executable starts its hogging business again. And if I then additionally enable the WLAN a few minutes later, it will AGAIN start to consume CPU!

So: can one decouple this? Running a scan ONCE after (re-)starting it is definitely enough, especially if Defender hasn't downloaded any new signatures since the last run! And, second, can one make Defender convince to strictly run in the background ONLY?

Michael

[Moved from Windows]

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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146 answers

Anonymous

2015-09-21T05:24:57+00:00

Still its using 54.4MB of RAM
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Anonymous

2015-09-19T13:17:18+00:00

There is no WINDOWS DEFENDER IN MICROSOFT/WINDOWS/....

if someone can help me:

skype: nikk4001

Nikola click on your notifications icon and select all settings then where is says find a setting on the top right type in defender and click return, there it is
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Anonymous

2015-09-19T07:47:48+00:00

There is no WINDOWS DEFENDER IN MICROSOFT/WINDOWS/....

if someone can help me:

skype: nikk4001
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Anonymous

2015-09-15T17:54:25+00:00

I did this and discovered windows defender was turned off but there is no button to turn it back on. I have Panda Antivirus running but thought I should have them both, since windows defender checks for malware too. Now. I would prefer not to as my laptop has never worked better! Instant response, fast as lightening, the way things should be. It was almost non-functioning prior this, so maybe I'll take a chance. What are your thoughts?
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Anonymous

2015-09-15T10:28:06+00:00

Hi Michael,

Thank you for choosing Windows 8 and joining us on our Community.

From the issue description, I understand that Windows Defender runs the security scan when the system wakes up from sleep mode or when you try to plug a network cable to the computer. And you don’t want this.

You would have scheduled Windows Defender to do so. So I would suggest you to unschedule Windows Defender to do so and check.

Follow these steps:

a.      Press Windows key + W and type administrative tools.

b.      Select Administrative Tools and select Task Scheduler.

c.       Follow this path in the left hand pane. Task Scheduler Library/Microsoft/Windows/Windows defender

d.      Uncheck all the boxes under Idle, Power and Network.

e.      Now it won’t scan your computer.

For any further queries related to Windows defender, feel free to get back to us any time. We will be glad to assist you.

i cant sees idle,power,network
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