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RPC_S_INTERNAL_ERROR
The runtime failed outside the application’s normal protocol result
RPC_S_INTERNAL_ERROR is a generic RPC runtime failure and does not identify a single network condition. It can be returned after an invariant fails in binding, dispatch, transport, security, or stub processing. The most useful evidence is therefore the extended error chain and the operation phase, not the final status alone.
Capture RPC extended error information immediately, together with interface UUID, opnum, protocol sequence, endpoint, authentication service, process version, and crash or event logs. Determine whether the same call fails locally over ncalrpc and remotely over another transport. Repeated occurrence with one generated interface suggests stub or lifetime corruption; broad occurrence suggests runtime, security provider, or system resource problems.
What to inspect
- Preserve the full extended-error chain before cleanup calls execute.
- Separate client-stub, transport, server-dispatch, and reply-unmarshal phases.
- Check for memory corruption or handle lifetime errors near the first failing call.
References
- Microsoft: RPC extended error information
- Microsoft: RPC failure phases
- Microsoft: RPC return values
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