public static async Task gRPCTest() { System.Console.WriteLine("Retrieving gRPC weather forecast info..."); AppContext.SetSwitch("System.Net.Http.SocketsHttpHandler.Http2UnencryptedSupport", true); // Allow http: This switch must be set before creating the GrpcChannel/HttpClient. https://docs.microsoft.com/en-us/aspnet/core/grpc/troubleshoot?view=aspnetcore-3.1#call-insecure-grpc-services-with-net-core-client var channel = GrpcChannel.ForAddress("https://*****:*****@reply}"); }