Hi Raj, I tested RPC over HTTPS without any problem in internal network. I tried long before all steps that you listed in your mail. No chance! I followed also Microsoft Knowledge Base Article - 833401 to configure RPC over HTTP. Each time Outlook tries to connect over Port 135, not over HTTP(S). I read in the discussion group that Outlook 2003 need to be in internal network (Exchange network) to create an outlook profile. If it's true that is against the Architecture of RPC over HTTP(S)!!! I am very sure that there is another bug in Outlook 2003 for RPC over HTTP(S) connections. It is unfortunately also my work to find out this bug! Best Regards Mustafa