I have a user who has two Exchange mailboxes in Outlook that cannot be removed. In fact I'm not sure why they are there at all because I cannot find evidence within Outlook's Accounts settings for these mailboxes.
I cannot right-click -> Close these two "Enquiries" mailboxes, Outlook advises to remove them from the Accounts settings:
There is only one Exchange mailbox under Outlook Accounts, plus no additional Mailboxes added:
Can someone please help?