What does BSOD 44 (PORT_DRIVER_INTERNAL) mean?

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: PORT_DRIVER_INTERNAL

Could be also:
Constant	Type	OS
KERN_RPC_TERMINATE_ORPHAN	Kern return	Mac
ippStsPrevLibraryUsed	Intel Ipp Status	Any
ECHRNG	errno	Linux
ESOCKTNOSUPPORT	errno	Mac
EL2HLT	errno	Solaris

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PANIC_STACK_SWITCH	SCSI_DISK_DRIVER_INTERNAL

PORT_DRIVER_INTERNAL

PORT_DRIVER_INTERNAL is bug check 0x2C. Microsoft marks the stop very infrequent and does not define portable meanings for parameters 1 through 4. “Port driver” is a category in the symbolic name, not a published identifier for a specific storage, display, network, or other port-driver implementation.

Find the concrete driver stack first

The crash dump should show which modules and device stack were active. Do not choose a device class from the constant name alone. With matching symbols, inspect the stack and loaded modules, then correlate the implicated driver version with the hardware and recent changes on that system.

Practical triage

Preserve all four arguments and the exact kernel build even though the reference gives them no stable field names.
Use !analyze -show 0x2C, followed by !analyze -v on the real dump.
If a third-party module is consistently present in the responsible path, investigate that module and its device stack; avoid replacing unrelated hardware based on the stop label.

References

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