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JSI Tip 2418. Windows 2000 Event ID 256 in the System Event Log?.

Applications can register to receive Plug and Play device interface notification when an interface of the type specified is enabled or disabled.

If you receive:

Event Source: PlugPlayManager
Event ID: 256
Description: Timed out sending notification of device interface change to window of ""

in the System Event Log:

1. You have an application that has registered to receive Plug and Play device interface notifications for a specified type.

2. The specified interface has been enabled or disabled.

3. The application has not responded (acknowledged) the event within 30 seconds.

NOTE: This is a warning event only.

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