With Outlook 2016 most shared mailboxes will automatically be added to your outlook client. If the mailbox has been around for awhile it needs a little bit of help. This is the guide I send to users to add or remove a shared mailbox.

  • Select File in the upper left corner of the screen.
  • Select Account Settings > Account Settings.
  • Select your primary account and then double click on it
  • Click More settings
  • Select Advanced tab
    • To add a mailbox, Select Add and type the email address of the mailbox as it appears in the address list
    • Remove the mailbox select the mailbox you are wanting to remove
  • Select OK
  • Select Next
  • Select Done
  • Select Close
  • Restart Outlook and see if the mailbox is Added/removed

Tip - If you don't find your mailbox in the account settings contact your IT department as this a new style mailbox and you will need your permissions removed for it to be removed from Outlook.

Extra Credit

Adding a shared mailbox - Outlook Web Access
Adding a shared Mailbox - Outlook for Mac

This post is a "just for documentation (JFD)" post which I use for my referance, but I have made public as it may be useful. I put less time into these posts as they are my reference. If you would like more information or some help post a comment, and I can see what I can do.