Download the latest copy of the OAB. All of the above have not yet solved the problem. A 'Contact' is not an address in your Exchange Global Address List. Note:Make sure the Filter Description column shows Office Outlook MSG IFilter. Wait for 30 seconds, restart Outlook, and re-enable AutoComplete. If your contacts are missing in Outlook after upgrading, dont panic. Your daily dose of tech news, in brief. Email is an excellent communication method. Ensure that the Contacts folder is marked as an Outlook Address Book. Ihave encountered a search issue like this with SharePoint Contact lists connected from Outlook 2007. Any ideas? //