User account in AD is inaccessible; it states that the object is not there or has been deleted. No one deleted that account. User can still login to network using that login account. User can still access mailbox from exchange. Tried to delete account, so we can attach the mailbox to another account but it again states that the account is inaccessible. When doing a search for the AD object (login), the object doesn't show up. Is there a way to break the association to this login account so we can re-create or create a new one and attach the e-mail box?