Thank you for your message.
I do not have any other hosts to compare, but this does happen with multiple viewers coming in from different networks.
That might point at connectivity issues on the Host side which is also confirmed by the Host log you are referring to. Socket error #11001 may be caused by plenty of reasons, and generally it's connectivity/network issues between Host PC and remote server (in this case - our public server).
I don't think it is a DNS lookup issue since it does work intermittently.
It would be error #11004 then.
Have there been any other reports of difficulty communicating with the ID servers?
No, the servers are up and running. No recent maintenance or downtimes.
I would recommend that you check the firewall and antivirus software on your Host PC. For Internet-ID connection to work only outbound connection to our server is required, and such connection is normally allowed by default in modern firewalls , but who knows if there is any special policy or filter in place.
As for antivirus software, you could add Host's installation path to its exceptions list. You can do so with any a/v software including Microsoft's Windows Defender if that is what is being used on that computer.
Hope that helps.