BSOD 414 (BUGCODE_NETADAPTER_DRIVER): causes and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: the NetAdapterCx networking driver model detected a fatal adapter-driver violation.

Could be also:
Constant	Type	OS
ERROR_LINUX_SUBSYSTEM_NOT_PRESENT	Win32 error	Windows
HTTP_STATUS_URI_TOO_LONG	HTTP Code	Any

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CLUSTER_SVHDX_LIVEDUMP	PDC_PRIVILEGE_CHECK_LIVEDUMP

BUGCODE_NETADAPTER_DRIVER

NetAdapterCx driver violation

BUGCODE_NETADAPTER_DRIVER is bug check code 0x0000019E. The built-in table identifies it as BUGCODE_NETADAPTER_DRIVER; the useful diagnostic question is what Windows component raised the stop and which invariant failed.

This bug check is associated with the NetAdapter class extension model. It points to a network adapter driver contract problem rather than a generic network outage.

How to read the parameters

The exact subcode and stack identify which NetAdapterCx rule was violated.
The offender can be a NIC driver, virtual network adapter, or extension path that interacts with NDIS/NetAdapterCx objects.
Interpret it with WDF and network-driver state together.

What to check in the dump

Check NetAdapterCx/WDF logs, driver version, NDIS verifier output, and whether the adapter is physical or virtual.
Correlate with packet offload, reset, surprise removal, low power, and high-throughput workloads.
Do not diagnose it from IP-level symptoms alone; the crash is in the driver-model contract.

References

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