I have an 10.3 Portal and have followed the instructions at Configure ArcGIS Pro licenses—Portal for ArcGIS | ArcGIS for Servert to configure ArcGIS Pro licenses for my organization. Everything in the instructions worked like a charm. Once I finished step 23, I logged into Portal as an Administrator, clicked My Organization --> Manage Licenses, and assigned a Pro license to a user.
However, when that user opens Pro (version 1.0), is prompted to sign into Portal for ArcGIS, authenticates correctly, ArcGIS Pro never opens. It just dies (no process in task manager either). No error message or anything. I've tried to do some research, so here is my question.
If my portal machine (running the license server via ArcGIS License Server Administrator) is separated from the client machine (hosting Pro) by a firewall, do I need to open a direct port in order for this to work? The portal is configured through a web adaptor, but I don't know if Pro is trying to talk directly to the Portal server, or just ArcGIS Portal application.