Act as delegate causes inability to connect with Project Pro

Lately, I have been troubleshooting quite a bit in Project Server 2013's PWA and Project Pro 2013 using Act as Delegate when in PWA.

I quickly discovered I was unable to connect to PWA using Project Pro 2013 if I was in a delegate session.

I would receive the following message, "Project was unable to establish a connection with https://projects.contoso.com/pwa". This could be caused by a loss of network connectivity or inadequate permissions to connect to Project Web App."

I hope others find this information useful.

Originally posted at https://blogs.technet.com/b/brookswhite.