Not able to fetch ad configuration

Did you try to install connector on another dc. Here is the similar thread going on:

https://social.msdn.microsoft.com/Forums/en-US/f63cbeb5-3c5f-4c55-b9b3-2fc28f212957/unable-to-retrieve-the-azure-active-directory-configuration-field-not-found?forum=WindowsAzureAD