if your having trouble archive off users mailboxes, give your self full as permission with the command ‘Add-MailBoxPermission “USER” -User “TRUSTED USER” -AccessRights FullAccess’ inside a microsoft exchange management shell running as administrator, and then run the command ‘export-mailbox -identity “USER” -pstfolderpath c:\temp -confirm:$false’ this will move the users .PST(mailbox) to the c:/temp folder.