DNS resolution failed for service: https://us-central1-dialogflow.googleapis.com

[Rodolfo Ruiz]

Hello, I'm trying to use Google.Cloud.Dialogflow.Cx.V3 library in .Net. When I try to use the method "CreateIntent", I received this error:

Status(StatusCode="InvalidArgument", Detail="Please switch to 'us-central1-dialogflow.googleapis.com' to access resources located in 'us-central1'.", DebugException="Grpc.Core.Internal.CoreErrorDetailException: {"created":"@1644603797.290000000","description":"Error received from peer ipv4:142.250.72.234:443","file":"..\..\..\src\core\lib\surface\call.cc","file_line":1070,"grpc_message":"Please switch to 'us-central1-dialogflow.googleapis.com' to access resources located in 'us-central1'.","grpc_status":3}")

After this I changed the endpoint property to https://us-central1-dialogflow.googleapis.com, and now the error is:

Status(StatusCode="Unavailable", Detail="DNS resolution failed for service: https://us-central1-dialogflow.googleapis.com/v3/", DebugException="Grpc.Core.Internal.CoreErrorDetailException: {"created":"@1644603734.613000000","description":"Resolver transient failure","file":"..\..\..\src\core\ext\filters\client_channel\client_channel.cc","file_line":1356,"referenced_errors":[{"created":"@1644603734.613000000","description":"DNS resolution failed for service: https://us-central1-dialogflow.googleapis.com/v3/","file":"..\..\..\src\core\ext\filters\client_channel\resolver\dns\c_ares\dns_resolver_ares.cc","file_line":360,"grpc_status":14,"referenced_errors":[{"created":"@1644603734.613000000","description":"C-ares status is not ARES_SUCCESS qtype=A name=https is_balancer=0: Domain name not found","file":"..\..\..\src\core\ext\filters\client_channel\resolver\dns\c_ares\grpc_ares_wrapper.cc","file_line":722,"referenced_errors":[{"created":"@1644603734.610000000","description":"C-ares status is not ARES_SUCCESS qtype=AAAA name=https is_balancer=0: Domain name not found","file":"..\..\..\src\core\ext\filters\client_channel\resolver\dns\c_ares\grpc_ares_wrapper.cc","file_line":722}]}]}]}")

I don't know if I'm doing something wrong or there is a problem with the API.

[Monica (Google Cloud Platform)]

Hello,

Please reference this documentation on how to specify a region with the API. Also address the REST API documentation for webhooks endpoints and the .Net reference code. 
For the specific error, please address the StackOverflow community for help.