FIX: Can’t Close Shared Users Mailbox in Outlook with Office 365

So you’re an Office 365 administrator and you’ve granted yourself, or someone else, “Full Access Permissions” to another user’s mailbox — either in Exchange Management Console or in Exchange Admin Center in the Office 365 Portal. You did this because you needed to access the user’s mailbox to receive something or work on an issue. Read more about FIX: Can’t Close Shared Users Mailbox in Outlook with Office 365[…]