The computer may unexpectedly resume from standby or hibernation and then automatically return to standby or hibernation after two minutes

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SYMPTOMS
The computer may unexpectedly resume from standby or hibernation and then automatically return to standby or hibernation after two minutes.
CAUSE
This behavior occurs when the Wake-on-LAN functionality is enabled and when a network wake-up frame or "magic packet" is received.

For example, if Wake-on-LAN is enabled on your computer, the computer resumes (or awakens) from standby or hibernation when it receives an ICMP Echo Request (ping request) from the network. After two minutes, if no other activity or ping requests from the network occur, the computer automatically returns to standby or hibernation. This behavior occurs because Wake-on-LAN is typically configured to return your computer to standby or hibernation after two minutes of inactivity.
WORKAROUND
To work around this behavior, enable the Only allow management stations to bring the computer out of standby option. To do this, follow these steps:
  1. Right-click My Computer, and then click Properties.
  2. On the Hardware tab, click Device Manager.
  3. In Device Manager, double-click Network Adapters.
  4. Right-click your network adapter, and then click Properties.
  5. On the Power Management tab, click to select the Allow this device to bring the computer out of standby check box, and then click to select the Only allow management stations to bring the computer out of standby check box.
  6. Click OK, and then close Device Manager and System Properties.

    Note If there is no Power Management tab on the Properties tab for your network adapter, your network adapter does not support power management. Or, the driver for your network adapter may not support configuring the power management options.

    If your network adapter does not support power management, this behavior is caused by another device or process that is running on your computer. If you are sure that your network adapter supports power management, contact the manufacturer of your computer or network adapter for information about Wake-on-LAN.
When you enable the Only allow management stations to bring the computer out of standby option, you enable servers to bring the computer out of standby or hibernation so that administrators can perform required tasks. Additionally, you prevent rogue "magic packets" and eliminate the unwanted wake events.
STATUS
This behavior is by design.
MORE INFORMATION
The Wake-on-LAN functionality exists when your network adapter supports power management and your computer is configured to let the network adapter bring the computer out of standby when a change in the network link state is detected.
wake on lan sleep
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Article ID: 810719 - Last Review: 01/11/2008 22:51:46 - Revision: 6.1

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