BROKER_AUTHENTICATOR_ERROR_GETAUTHTOKEN

Connection is not available to refresh token

This error is from broker and caused by the device network error. It occurs when the app is trying to call broker to get new access token with refresh token and failed because the network is disconnected. The client app could do a retry or ask the user to connect network.

Unable to resolve host

com.microsoft.aad.adal.AuthenticationException: Unable to resolve host "login.microsoftonline.com": No address associated with hostname

com.microsoft.aad.adal.AuthenticationException: Unable to resolve host "login.windows.net": No address associated with hostname

It is a DNS issue from AAD.