You have entered a shared mailbox address whose domain({0}) is not present in the list of accepted domains for your organization. ...

You have entered a shared mailbox address whose domain({0}) is not present in the list of accepted domains for your organization. If you know that you have this mailbox as part of your other subscriptions, please click on 'Start over' and log back in with the shared mailbox address you entered and run 'My Outlook shows trying to connect... or disconnected' checks.