BSOD 0xC0 (PCI_CONFIG_SPACE_ACCESS_FAILURE): causes and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: Windows failed while accessing PCI configuration space for a device.

Could be also:
Constant	Type	OS
ERROR_EXE_MARKED_INVALID	Win32 error	Windows
STATUS_USER_APC	NTSTATUS	Windows

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MUTEX_ALREADY_OWNED	SPECIAL_POOL_DETECTED_MEMORY_CORRUPTION

PCI_CONFIG_SPACE_ACCESS_FAILURE

PCI configuration-space access failure for PCI_CONFIG_SPACE_ACCESS_FAILURE

PCI_CONFIG_SPACE_ACCESS_FAILURE is bug check code 0x000000C0.

PCI configuration space contains device identity, BARs, capabilities, interrupt configuration, and power-management fields. This bug check indicates that a kernel path could not access or validate that configuration state.

How to read it in a dump

The affected bus, device, and function are usually found from the stack, device object, or platform firmware context.
Failures can involve firmware, chipset, hot-plug, power transition, virtualization, or a driver touching config space incorrectly.
It is not a normal PCI device-start failure unless the dump shows the PnP start path.

What to check

Check firmware/BIOS updates, PCIe device seating, hot-plug events, virtualization pass-through, and chipset drivers.
Audit drivers that read or write PCI configuration space directly.
Correlate with WHEA PCIe events and power-management transitions.

References

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