Just had to change a user account name in Active Directory due to a user getting married.   All pretty straightforward, however after several hours, the change hadn’t appeared in the global address list in Outlook, so I thought I’d look into it.

Here are the steps necessary to prompt the change to happen sooner:

1) In Exchange System Manager, go to the offline address list, right click and select Rebuild

2) In Outlook – go to send/receive and select Download Address Book

You should now see the new name appear in the contact list.