go type_error ai_generated true

rpc error: code = Unimplemented desc = unknown service helloworld.Greeter

ID: go/grpc-unimplemented-service-not-registered

Also available as: JSON · Markdown · 中文
80%Fix Rate
89%Confidence
0Evidence
2025-06-22First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
1.0 active — — —
1.1 active — — —

Root Cause

The gRPC server does not have the service registered, often because the server code did not call RegisterGreeterServer.

generic

中文

gRPC服务器未注册该服务，通常是因为服务器代码未调用RegisterGreeterServer。

Workarounds

  1. 95% success Register the service with the gRPC server. 
    grpcServer := grpc.NewServer()
pb.RegisterGreeterServer(grpcServer, &server{})
// Then start listening
lis, _ := net.Listen("tcp", ":8080")
grpcServer.Serve(lis)
  2. 90% success Ensure the protobuf generated code is imported and used correctly. 
    import pb "path/to/protobuf/package"
// Then use pb.RegisterGreeterServer

Dead Ends

Common approaches that don't work:

  1. Restart the server without registering the service. 100% fail

    The server code is missing the registration; restarting doesn't add it.

  2. Use a different client that expects a different service. 90% fail

    The client is hardcoded to call a specific service; changing client may not help.