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How to remove automapping for a shared mailbox in Office 365

To disable automapping, use Windows PowerShell to remove full access permissions from the user for the mailbox, and then add back full access permissions to the user. When you add back full access permissions to the user, use the AutoMapping:$false

1. Run PowerShell

2. $UserCredential = Get-Credential

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

4. Remove-MailboxPermission -Identity users-mailbox -User admins-mailbox -AccessRights FullAccess

Once you have removed the permissions run the following PowerShell command

Add-MailboxPermission -Identity users-mailbox -User admins-mailbox -AccessRights FullAccess -AutoMapping:$False

Mike Keats

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