Hi, I just upgraded to a new server with exchange 2007, I have removed the old server running exchange 2003 from the site. I followed the migration process and all seemed to work fine. My only problem is that I have 4 users that I cannont see the free/busy data on when I try to schedule a meeting. If I mouse over the user it says "no free/busy information could be retrieved" I have verified all calender permissions on each users mailbox. This worked fine on the old system. I have no events logged in the event viewer, it is very clean. The 4 users in question are setup identical to the other users that are working fine. I think I am missing something very simple but I am currently braindead and would appreciate any help you could give.