I have exchange 2000 sp3 running on a windows 2000 server. Users are running Outlook 2003 Pro. If i go into Active Directory Users and Computers and add a user he does not appear and if I go to hide a user they do not disappear from the Global Address List. If I go onto the Exchange server and go to Global Address List and do a preview I see the new user and the user i tried to hide is now hidden. If I go to Outlook 2003 and go to New Message and view the Global Address List it does not have the new user and the hidden user is still there. I tried to rebuild the Offline Address List and forced Replication on the servers tring to make things go faster but they still appear. Outlook 2003 is also in cached mode. If I remove the user from cached mode and go into Outlook and view the Global Address List the new user is there and the hidden user is hidden. I know that Outlook 2003 pulls oab files locally to the desktop from the server so I went in and removed them and downloaded the address book hoping that there was some issue with the local oab files but that did not work either. Any ideas?