I migrated from Exchange 2003 to Exchange 2007. I have configured my Outlook 2002 server with a new profile to point to user's mail box on Exchange 2007 server. The Exchange 2007 server recognizes the user but when I close Outlook and re-open I get message "unable to expand folder". How can I fix this?Thank you,Firenet

~ Do you have public folder database created on Exchange 2007 server? It requires to use Outlook 2003 or older version with Exchange 2007.Earlier Outlook clients cant connect to Exchange 2007 Serverhttp://support.microsoft.com/kb/555851~ Run ExBPA on Exchange server and see if you get any error related to PF, something like below...The msExchPFTreeType attribute is not set to the default valuehttp://technet.microsoft.com/en-us/library/dd535373.aspxAmit Tank | MVP - Exchange | MCITP:EMA MCSA:M | http://ExchangeShare.WordPress.com