In order to get the new DL definition added to the cache, you need to remove the current value by moving your mouse over it so it turns blue, then pressing delete. Step Launch the Microsoft Outlook application. Seeing addressees appear when you start typing in the To field is not the Address Book and the information in the pop-up list can be different from what's in the Address Book. If you update something in your Contacts folder, it must, of necessity, be correct in the Address Book interface because the Address Book gets its information from Contacts. Step Navigate to the "Contacts" tab in the lower-left corner of the main Outlook window. Run it multiple times until it reports no more errors. All of your contacts and distribution lists are displayed in the center part of the window.