We recently got an authentication issue on Our Outlook Web App (OWA) for Exchange 2010. The OWA itself can be loaded. However, when you try to log on (Authenticate) there is an issue that said ” OWA might be temporarily down or it may have moved permanently to a new address. “
There were no error logs or any issues reported. This was because the service was running. However, authenticating through a web form was not enabled.
This issue is happening because “Microsoft Exchange Forms-Based Authentication” service is not running. To fix this issue, log in to the server running Exchange Server using Administrator Privileges and make sure the service above is running.