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Windows 7: wake-on-lan activated : computer keeps waking up by itself

17 Mar 2013   #1
anarchoi

win7 64bits
 
 
wake-on-lan activated : computer keeps waking up by itself

I've set my HTPC to wake on LAN (from magic packet only). However, a few times per day my HTPC wakes up by itself.

Is there a way i can know how it wakes up, which device sent the WOL magic packet ? I really don't understand why it is waking up by itself since i haven't sent the packet...


My System SpecsSystem Spec
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17 Mar 2013   #2
UsernameIssues

W7 Pro SP1 64bit
 
 

If you turn the WoL off, does it still wake itself up?

Are there any clues in the Windows Event Viewer?
My System SpecsSystem Spec
17 Mar 2013   #3
anarchoi

win7 64bits
 
 

Well if i disconnect my LAN cable from the HTPC it will stop waking itself up

How do i check the Windows Event Viewer ? I have windows in french so i'm not sure where it is and how it is called
My System SpecsSystem Spec
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17 Mar 2013   #4
UsernameIssues

W7 Pro SP1 64bit
 
 

Click on the Start button/circle
Right click on Computer
Select Manage from the context menu

Once the Computer Management window opens...
...expand these trees and look around in here:

wake-on-lan activated : computer keeps waking up by itself-events.png


My System SpecsSystem Spec
27 Mar 2013   #5
anarchoi

win7 64bits
 
 

There's so much thing in this log... i don't know what to look for... and i don't even understand the information given by each log item...
My System SpecsSystem Spec
27 Mar 2013   #6
anarchoi

win7 64bits
 
 

I just noticed "powercfg lastwake" says the last wake event was a timer ???
My System SpecsSystem Spec
27 Mar 2013   #7
UsernameIssues

W7 Pro SP1 64bit
 
 

Then is looks like it is a scheduled task waking it up.

I'm not sure how to best hunt thru each task, but the info is in the same management console that I showed in my post above. Expand the tree for the Task Scheduler.

wake-on-lan activated : computer keeps waking up by itself-wake.png


My System SpecsSystem Spec
27 Mar 2013   #8
Barman58

Windows 10 Pro x64 x2 Windows 10 Enterprise x64, Ubuntu
 
 

One easier method might be to disable the WOL option in the NIC, if your Network card has this function they will be in the local area network - properties-confugure dialog

they may be named differently but here is a snip of the ones on my NIC, sometimes disabling one of the wake options will still allow the remote wake but stop the local wake

wake-on-lan activated : computer keeps waking up by itself-wol.jpg


My System SpecsSystem Spec
31 Mar 2013   #9
anarchoi

win7 64bits
 
 

I want to let WOL enabled because i use it to wake my computer with a magic packet.

I have disabled wake-on-alarm in my BIOS and in Windows, but my computer keeps waking up by itself and "powercfg lastwake" says it was waken by a timer.
My System SpecsSystem Spec
31 Mar 2013   #10
Barman58

Windows 10 Pro x64 x2 Windows 10 Enterprise x64, Ubuntu
 
 

One thing it may be is a Scheduled task timer related to a windows process, for example The windows Media centre is set by default to check for online media for use with songs, Cover images etc, and I think this has the wake option set - The Microsoft items tend to be set to operate around 3AM so if your wakes are at this sort of time that may be an avenue worth investigating - I actually switch all retrieval options for WMP & WMC off in their own controls so do not have the wake issue - but it could be anything, if the event is at a set time this would make your search through the scheduled tasks a little easier
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