Scenario: A new mailbox is provisioned and the user is receiving the following error when accessing their mailbox via OWA:
😦something went wrong
Sorry, we can’t get that information right now. Please try again later. If the problem continues, contact your helpdesk.
All normal mail protocols such as OWA and ECP were enabled by default.
Resolution: I performed a search against the email address for that mailbox and came across two mailboxes that had the same email address (get-mailbox firstname.lastname@example.org). I removed this email alias from the user who was not using it. The user experiencing the problem could now login to OWA.