Can’t remove additional mailboxes in Outlook

Can’t remove additional mailboxes in Outlook

Have you ever wondered why you can’t close down your additional mailboxes in Outlook, returning you this error :

Can't remove additional mailbox from Outlook

Only to find out that your Account Settings tab is empty?

Can't remove additional mailbox from Outlook

Well there is still hope. There are two options. You can just re-create the Outlook profile and hope that this fixes it or you can choose to explore more options. One of these options is called Auto Mapping and is introduced in Exchange 2010 and 2013.

It basically automatically adds any mailboxes you have Full Access to directly into your Outlook client. This is designed to reduce the administrative time to give such access especially for helpdesk teams where a single click can provide you with Full Access but you need still to do a remote session to the customer’s computer and add the mailbox into their Outlook.This is for the customers that don’t know how to do it themselves and believe me 90% of them don’t.

However touching the automapping cannot be done through the GUI and would need Shell. Here is the command :

Add-MailboxPermission -Identity User1 -user “User2” -AccessRights FullAccess -InheritanceType All -AutoMapping:$false

where User 1 is the mailbox owner and User 2 is the user receiving the FullAccess rights to User1’s mailbox. -AutoMapping:$false or true turns off and on the automapping.

Can't remove additional mailbox from Outlook

Don’t worry if you run the command for users that already have Full Access to their mailboxes, it will still run the command properly.

For those of you who want to go even further here are the registry keys responsible for the Outlook profiles. Always backup your registry before editing !

HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Default

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