| Previous | Next |
| RPC_S_BINDING_INCOMPLETE | RPC_S_UNSUPPORTED_AUTHN_LEVEL |
RPC_S_COMM_FAILURE
RPC_S_COMM_FAILURE means that RPC was unable to communicate with the server during the call. It is a communication-stage failure, not a detailed diagnosis of why the connection failed.
How to handle the outcome
Because the call may have progressed before communication failed, a client should treat the remote operation as having an unknown outcome unless the application protocol provides a definitive status record.
What to inspect
- Network path, firewall, proxy and name-resolution changes.
- Server restarts, overload and endpoint availability around the failure.
- Extended RPC error records, which can retain details from layers such as the runtime, security provider, I/O system or Winsock.
Microsoft: RPC Return Values · Understanding Extended RPC Error Information
Looking for a different code? Search another status or error code.