I recently completed the setup/configuration of the WebGIS/Big Data Store and GeoEvent. ArcGIS/Portal on one machine, Big Data Store on machine two, and GeoEvent on machine three. Following the setup I discovered that the ArcGIS Server/Portal machine was named incorrectly. We renamed the machine to meet our naming conventions and now I'm having issues connecting to my ArcGIS server and my Portal. How do I resolve the name issues? My initial thought was to unfederate the server/portal, but I'm not sure how to do that when I can't access the Portal.