| Previous | Next |
| RPC_X_SS_HANDLES_MISMATCH | RPC_X_NULL_REF_POINTER |
RPC_X_SS_CANNOT_GET_CALL_HANDLE
The failure is inside RPC call processing
RPC_X_SS_CANNOT_GET_CALL_HANDLE is raised when a stub cannot obtain the handle for the RPC call it is currently processing. It is a stub/runtime condition, not a statement that an application-level object handle is missing. NDR stubs sit between application parameters and the transport: they marshal input values, reconstruct the remote call, and marshal output values.
Generated stubs are intended to be treated as opaque. Calling NDR routines or code that depends on active-call state outside the intended generated-stub context can produce undefined behavior. Hand-written marshal routines, unusual interception layers, and mismatched generated artifacts are therefore important suspects.
What to verify
- Confirm that client and server were built from the same IDL revision and compatible MIDL-generated proxy and stub artifacts.
- Check custom
user_marshal,wire_marshal, proxy, or RPC filter code for assumptions that an active call always exists. - Ensure no callback, deferred worker, or cleanup path invokes call-context-dependent routines after the RPC dispatch scope has ended.
- Preserve the original RPC status in logs together with interface UUID, procedure number, transfer syntax, and process architecture.
Why a transport retry may not help
Retrying an unchanged call can reproduce the same stub-state problem. Correct the IDL/stub deployment or the code that accesses call context before deciding whether the underlying request is safe to repeat.
References
Microsoft: RPC NDR Engine · The Open Group: DCE NDR transfer syntax · Microsoft: RPC return values
Looking for a different code? Search another status or error code.