Works on MS Windows 95/98/Me, allowing the admin to modify the mailboxes from a desktop machine.
Directory Update is a "self-service" web application that allows a user to update their own information in the Active Directory and thus in the Global Address List (GAL).
All the email applications retain an Address Book to preserve a record of all the contacts.
Out of which, one such email application is Outlook that stores its address book data offline as OAB (Offline Address Book) extension used by Microsoft Corporation.
Instead of changing the default schedule, users able to force an update and redistribution of Offline Address Book (OAB) on Exchange to solve scenarios related to Outlook OAB not updating quickly.