Error Message:

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Unable to open a device that was sharing an interrupt request (IRQ) with other devices. At least one other device that uses that IRQ was already opened.

Explanation:

Windows 2000 allows more than one device to be assigned to an interrupt request (IRQ). But only one of the devices can be actively using the interrupt request at any one point in time.

User Action:

Wait until the other device is finished and retry the operation, or stop using the other device and then retry the operation.