I have a user who has Outlook 2010 and shares his contacts with users that have Outlook 2007. The users can access the contacts folder, but when they try searching the shared contacts using instant search or advanced find the search keeps on going and no results appear. Is that a compatibility issue with Outlook 2007, since a user who couldn't search the shared contacts when she was using Outlook 2007 can now search with Outlook 2010? Thanks in advance for feedback

By the way, users can search the shared mail and calendar. The issue is only with shared contacts.