BSOD 0x57 (XNS_INTERNAL_ERROR): causes and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: A legacy XNS networking compatibility path detected an internal error.

Could be also:
Constant	Type	OS
ERROR_INVALID_PARAMETER	Win32 error	Windows
EUSERS	errno	Linux
ESHLIBVERS	errno	Mac
ELIBEXEC	errno	Solaris

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INSTRUCTION_COHERENCY_EXCEPTION	FTDISK_INTERNAL_ERROR

XNS_INTERNAL_ERROR

Legacy XNS networking failure for XNS_INTERNAL_ERROR

XNS_INTERNAL_ERROR is bug check code 0x00000057.

XNS was an older network protocol family. In current crash analysis this bug check is mainly a historical networking bucket unless the dump shows a specific legacy transport or compatibility driver.

How to read it in a dump

The stack and loaded modules decide whether a real XNS/legacy transport component is involved.
Do not diagnose it from IP networking symptoms alone.
The code can still be useful as a sign to inspect old transport/filter drivers.

What to check

Check for legacy networking stacks, virtual adapters, emulation software, or old filter drivers.
If the stack is in modern NDIS/TCPIP, focus on those modules rather than the historical protocol name.
Collect driver versions and reproduce with network filters disabled only in a controlled test.

References

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