Outlook 2016 has a profile creation changes we know about. Specifically, manual profile creation for an Exchange mailbox is no longer available. You must use Auto Discover to create the profile. All previous versions of Outlook using Auto Discover (2007, 2010, and 2013) had manual profile creation as an option if Auto Discover failed. There seems to be another change we weren’t told about.
This is an UPDATE to a previous post “Outlook 2016 Can’t Create linked Mailbox Profile — Outlook 2016 Authentication Changes Impact Profile Creation“ It is beginning to look like this is not a just a linked mailbox issue. The traces seem to show that Outlook is simply not attempting to authenticate on it’s own at all regardless of the fact that it is a domain joined computer with an an authenticated user logged in. This does not seem to be a pass-through issue. It happens on Windows 7 as well as Windows 10 so it does not seem to be … Read more