I seem to have an additional mailbox in Outlook 2016 which shouldn't exist. I right-click the mailbox and select "Close " but then I get the following error:
The only e-mail account listed in Account Settings is my primary Exchange mailbox. I checked further into that account's settings, and verified that there are no other mailboxes listed under "Open these additional mailboxes:".
I've already deleted and re-created my Outlook profile, but this problem persists. What else should I do to rectify this issue?
22 Answers
Have you checked on the Exchange side? You could have been given full mailbox access to the mailbox by an Exchange admin, with automapping enabled. This won't be visible from Outlook.
We can view the following attribute in ADSI Edit or ADUC:
Right-click this shared mailbox, in the Attribute Editor, double click the msExchDelegateListLink attribute, check if your account is listed there. You can remove your account from the msExchDelegateListLink attribute to clear Automapping. Restart Outlook and check if the shared mailbox is removed
