alinaliBQ opened a new issue, #46634: URL: https://github.com/apache/arrow/issues/46634
### Describe the bug, including details regarding any error messages, version, and platform. Currently in the `apache/main` branch, both `C++ / AMD64 Windows MinGW MINGW64 C++` and `C++ / AMD64 Windows MinGW CLANG64 C++` are failing due to the [same error](https://github.com/apache/arrow/actions/runs/15288409635/job/43003268577): ``` [291/967] Generating Flight.pb.cc, Flight.pb.h, Flight.grpc.pb.cc, Flight.grpc.pb.h FAILED: src/arrow/flight/Flight.pb.cc src/arrow/flight/Flight.pb.h src/arrow/flight/Flight.grpc.pb.cc src/arrow/flight/Flight.grpc.pb.h D:/a/arrow/arrow/build/cpp/src/arrow/flight/Flight.pb.cc D:/a/arrow/arrow/build/cpp/src/arrow/flight/Flight.pb.h D:/a/arrow/arrow/build/cpp/src/arrow/flight/Flight.grpc.pb.cc D:/a/arrow/arrow/build/cpp/src/arrow/flight/Flight.grpc.pb.h C:\Windows\system32\cmd.exe /C "cd /D D:\a\arrow\arrow\build\cpp\src\arrow\flight && D:\a\_temp\msys64\mingw64\bin\protoc.exe -ID:/a/arrow/arrow/cpp/../format --cpp_out=D:/a/arrow/arrow/build/cpp/src/arrow/flight D:/a/arrow/arrow/cpp/../format/Flight.proto && D:\a\_temp\msys64\mingw64\bin\protoc.exe -ID:/a/arrow/arrow/cpp/../format --grpc_out=D:/a/arrow/arrow/build/cpp/src/arrow/flight --plugin=protoc-gen-grpc=D:/a/_temp/msys64/mingw64/bin/grpc_cpp_plugin.exe D:/a/arrow/arrow/cpp/../format/Flight.proto" --grpc_out: protoc-gen-grpc: Plugin failed with status code 3221225477. ``` I was able to trace the first occurrence of this failure from commit https://github.com/apache/arrow/commit/76c7a68b4c9211934ec492e935367b14a8d35999. Previous commits in `main` branch either did not run the C++ checks or had them passing. I am not sure why this commit would cause this error to occur; since the commit only changes the docs, it is possible that the `protoc-gen-grpc` failure just happened to get caught by this commit https://github.com/apache/arrow/commit/76c7a68b4c9211934ec492e935367b14a8d35999. ### Component(s) C++, FlightRPC -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@arrow.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org