Wake-On-Lan (WOL) is not working when machine is in hibernate or in standby mode.
Last Updated July 11, 2009
Wake-On-Lan (WOL) seems to be not working when a machine is hibernated, in standby or in sleep mode. Customer noticed that their computers fail to startup when Wake-On-LAN task is run after computers go into hibernation. However, Wake-On-LAN works when the computers are shutdown completely.
In order for WOL to work when computer goes on Standby & Hibernation mode, NIC card Power Management configuration is required. By Default Windows turn this feature off to save power.
See Microsoft KB article "How to disable power management for a network adapter when you deploy Windows XP" (
You will need to allow the computer to turn on rather than turn off this device to save power.
Use the information provided on Microsoft KB article "How to disable power management for a network adapter when you deploy Windows XP" (
Basically to use Registry Editor to disable the "Allow the computer to turn off this device to save power" network adapter setting for a single computer, follow these steps:
1. ClickStart, clickRun, typeregeditin theOpenbox, and then clickOK. 2. Locate and then click the following registry subkey:
Note: DeviceNumberis the network adapter number. If a single network adapter is installed on the computer, theDeviceNumberis 0001.
3. ClickPnPCapabilities. 4. On theEditmenu, clickModify. 5. In theValue databox, type38, and then clickOK.
NoteBy default, a value of 20 indicates that power management of the network adapter is enabled. A value of 38 will prevent Windows XP from turning off the network adapter or let the network adapter wake the computer from standby.
6. On theFilemenu, clickExit.
Note: You can use Article ID:
3150 "How to Delete a Registry Key" as a reference of how to deploy the regkey to multiple machines.
Applies To Notification Server 6.0.6074 SP3 Windows XP
Imported Document ID: TECH42507
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