Outlook 2016 - Stop Displaying Mailboxes for Other Users

As an admin occasionally you'll give yourself permissions to a mailbox. And then you'll remember Outlook conveniently auto-maps that mailbox for you. Easy fix. Close Outlook. Open Powershell. [code language="powershell"] Add-MailboxPermission -Identity targetuser@foo -User youradmin@foo -AccessRights FullAccess -AutoMapping:$false [/code] Open Outlook. Enjoy the emptiness of the side bar.

You can/should also (once the mailbox disappears from Outlook) remove the permissions completely. [code language="powershell"]Remove-MailboxPermission -Identity targetuser@foo -User youradmin@foo -AccessRights FullAccess -InheritanceType All[/code]