Hi all. I'm at wit's end here and desperately hoping somebody can help. I am in the midst of a migration to Exchange 2016 from 2010. This is a small customer...about 18 users. I have all the mailboxes moved to the new server. That went off without a hitch. The only thing on the 2010 server are the public folders, which is another "fun" portion of the project I am dealing with (but that's a different topic). So mail delivery is good, I have no Outlook autodiscover issues internally or externally. I'm in a good place mostly EXCEPT for calendar issues. None of the users can view free/busy for the other users. This information CAN be viewed using OWA, but cannot be viewed in Outlook either by internal or external users. When I try to view this information or open up another calendar it shows as "no connection" next to the user's name.
My...