I can't sign in to ArcGIS Online through City Engine (v 2016.1.2875 160919R). I've tried adding a more specific link to our County's AGOL site through Preferences > Network > Portals, but that fails too. There are a few forum posts about this same issue in ArcMap dating back to 2011 all the way up to 2015 with many of the answers involving edits to the registry key. I'm hoping it doesn't come to that.
