What does Windows error code 1817 (RPC_S_NO_INTERFACES) mean?

 
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ERROR_NOT_ENOUGH_QUOTA RPC_S_CALL_CANCELLED

RPC_S_NO_INTERFACES

The server process is reachable but has not registered an interface

RPC_S_NO_INTERFACES concerns server registration state. An RPC process can initialize transports or call management APIs while no interface specification is registered for dispatch. In that state there is no interface UUID and version through which a client operation can reach a manager routine.

Audit every RpcServerRegisterIf or related registration call, including feature gates, initialization order, and rollback after partial startup. Confirm that the interface specification linked into the process is the intended generated symbol. Opening firewall ports or restarting the endpoint mapper cannot create a missing in-process interface registration.

What to inspect

  • Log interface UUID/version and registration result during server startup.
  • Verify cleanup code did not unregister the interface prematurely.
  • Check conditional component loading before investigating the network.

References


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