If a domain appears offline, you can try to reestablish a connection with the domain. If the status is offline because the domain is shut down, you first need to start the domain. After the domain is started, you can reestablish a connection with the domain. For information about reconciling domain status, see
Reconcile the status of a domain. If the domain is offline because an update is in progress, you can't reconcile the status. Wait for the update job to finish.