We have 2 separate developer workstations experiencing this problem with Visual Studio 2017 and Xamarin.iOS 10.10.
We are able to connect fine, but builds fail with the message:
Xamarin.iOS.Windows.After.targets(63,5): warning VSX1000: No Address and User has been specified in order to establish a connection to a Mac Server
The problem started yesterday on 10.8, and we upgraded VS but the problem did not go away.
We applied the FIX below of hard-coding credentials in the targets file and it resolved the problem, but has an unfortunate side-effect of being a security problem for us, as well as generally disconcerting. Are other people having this problem? Is there a patch or fix for this that does not involve hard-coding credentials?