Hey guys, Does anyone know what would cause the Outlook 2003 client to disable the RPC over HTTP configuration option? No matter what I try, the option does not make itself available in the Exchange account configuration Properties dialog box. I searched Google and only found two entries related to this, but none of them mention the possibility that the option would be greyed out. Thanks! Tom Thomas W Shinder www.isaserver.org/shinder <http://www.isaserver.org/shinder> ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp <http://tinyurl.com/1llp>