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Bug Check 0xD4: SYSTEM_SCAN_AT_RAISED_IRQL_CAUGHT_IMPROPER_DRIVER_UNLOAD

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The SYSTEM_SCAN_AT_RAISED_IRQL_CAUGHT_IMPROPER_DRIVER_UNLOAD bug check has a value of 0x000000D4. This indicates that a driver did not cancel pending operations before unloading.

Important

This article is for programmers. If you're a customer who has received a blue screen error code while using your computer, see Troubleshoot blue screen errors.

SYSTEM_SCAN_AT_RAISED_IRQL_CAUGHT_IMPROPER_DRIVER_UNLOAD Parameters

Parameter Description

1

Memory referenced

2

IRQL at time of reference

3

0: Read

1: Write

4

Address that referenced memory

If the driver responsible for the error can be identified, its name is printed on the blue screen and stored in memory at the location (PUNICODE_STRING) KiBugCheckDriver.

Cause

This driver failed to cancel lookaside lists, DPCs, worker threads, or other such items before unload. Subsequently, the system attempted to access the driver's former location at a raised IRQL.

Resolution

To begin debugging, use a kernel debugger to get a stack trace: the !analyze debug extension displays information about the bug check and can be helpful in determining the root cause, then use the kb (Display Stack Backtrace) command to get a stack trace. If the driver that caused the error has been identified, activate Driver Verifier and attempt to replicate this bug.

For full details on Driver Verifier, see the Windows Driver Kit.