Remove Auto-Mapping

Problem:

Auto-mapping, the ability for Exchange to add a shared mailbox to Outlook needs to be turned off for whatever reason.

Solution:

Connect to Power Shell (please make sure that you set up Power Shell properly for this access):

1. Run Windows Power Shell

2. $UserCredential = Get-Credential

3. $Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection

4. Import-PSSession $Session

Turn off auto-mapping:

1. Remove-MailboxPermission -Identity <Mailbox ID1> -User <Mailbox ID2> -AccessRights FullAccess

   1. This removes full access permissions
2. Hit Y

3. Add-MailboxPermission -Identity <Mailbox ID1> -User <Mailbox ID2>-AccessRights FullAccess -AutoMapping:$false

   1. This adds full access permissions without auto mapping
4. Hit Y
5. Run this command:   Remove-PSSession $Session