firebase,FirebaseError: There was an exception while connecting to the authentication server: Host is unresolved: auth.firebase.com

Question

I'm developing an Android mobile application using Firebase.

In this application, I have a registration and login activity which I used default creating user account and login of Firebase.

It was working correctly until 2 days ago but today I keep receiving error:

FirebaseError: There was an exception while connecting to the authentication server: 
               Host is unresolved: auth.firebase.com"

Any idea?

Answer 1

That error is reported when the Firebase client cannot establish a connection to the Firebase server.

Check your network connection, and any proxies or NAT devices that may be between you and Firebase.