What does NTSTATUS 0xC0020043 (RPC_NT_INTERNAL_ERROR) mean?

 
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RPC_NT_NO_CONTEXT_AVAILABLE RPC_NT_ZERO_DIVIDE

RPC_NT_INTERNAL_ERROR

Internal RPC runtime failure

RPC_NT_INTERNAL_ERROR belongs to the Windows RPC runtime NTSTATUS facility. For RPC_NT_INTERNAL_ERROR, mS-RPCE extends the DCE/RPC model: generated stubs marshal parameters, the runtime binds to an endpoint and protocol sequence, and security or transport failures can be returned as RPC facility status values.

This is a catch-all RPC runtime status. It is useful only when correlated with the call phase: binding, authentication, marshaling, network I/O, endpoint dispatch, or server rundown.

Treat it as a signal to gather runtime evidence rather than as a root cause. The next step is to identify whether the failure occurs before the request reaches server manager code, inside the generated stub, or after the response begins.

What to check for RPC_NT_INTERNAL_ERROR

  • Enable RPC runtime logging or ETW if available on the affected Windows version.
  • Check whether the same interface fails only with one protocol sequence or with every binding.
  • Look for adjacent security-package, stub, transport, or server crash events before assuming a generic RPC defect.

References for RPC_NT_INTERNAL_ERROR


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