I'm using Outlook 2007 and none of my contacts appear when I pick the address book in Outlook. I have lots of contacts listed in the 'Contacts' section. This problem appeared after a clean install of Windows 7 RC and reinstalling Office Ultimate 2007. I migrated all the data and after a little tweaking got most things working, except this... It looks like this is a common problem, with this recommended solution from the knowledge base: http://support.microsoft.com/kb/287563 This behavior occurs because Outlook requires that you complete the following steps before your contact information is available for you to address messages by using your address book: 1. Install the Outlook Address Book service. 2. Mark your contact folder for use with your address book. 3. Specify either an e-mail address or a fax number for each item that you want to appear when you address messages. I followed these instructions, but it still didn't fix the problem. First, I opened my Account Settings dialog (Tools->Account Settings); then clicked on the Address Book tab. Since my 'Outlook Address Book' was listed, I closed the dialog and moved on to step 2 (as per the instructions). Secondly, I switched to 'Contacts' and opened the Contacts properties (File->Folder->Properties for 'Contacts'), then I picked the Outlook Address Book tab. The instructions tell you to check the box labeled "Show this folder as an e-mail Address Book". However, this option is diabled or grayed out and I cannot check the box. Since step 2 didn't work, step 3 didn't make any sense. I don't know what folder list they are referring to here.