Hi, I have added a delegate for a room mailbox and now i am trying to remove it from the delegates list of the resource mailbox using Exchange Management Shell. Set-MailboxCalendarSettings -Identity ConferenceRoom -ResourceDelegates <delegates> The problem i encounter is that the ResourceDelegates parameter doesn't accept a null value so i cannot remove the user account from this list.Any ideas on how to accomplish this?Thanks in advance.

Hi MJH74,The command that works for me is Set-MailboxCalendarSettings -Identity ConferenceRoom -ResourceDelegates $nullthat clears all the delegatesregardsRussell