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RPC_NT_SEND_INCOMPLETE
The RPC send path has not drained the request buffer
This informational status reports transport progress rather than a decoded server failure. The RPC runtime still has bytes queued for transmission, so the interesting state is the binding, protocol sequence, send buffer and connection progress.
It is useful when diagnosing asynchronous or fragmented RPC traffic. Treat it as a boundary between marshalling and transport delivery: the stub may have prepared the call, but the transport has not yet consumed the complete request.
What to inspect
- Correlate with the protocol sequence and network connection state.
- Check for cancellation, timeout, or connection shutdown while a request is partially sent.
- Do not diagnose server procedure logic until the full request was delivered.
References
- Microsoft Open Specifications: MS-RPCE
- Microsoft: Remote Procedure Call (RPC)
- Microsoft Open Specifications: NTSTATUS values
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