Quoting from (URL WILL WRAP): http://www.microsoft.com/technet/prodtechnol/exchange/guides/E2k3RPCHTTPDep/ 91dc76e8-e60f-4f95-a32f-d4de63b263ac.mspx "All client computers that run Outlook 2003 must have either Windows Server 2003 or Microsoft WindowsR XP Service Pack 1 (SP1) or later installed, with the following update: 331320, 'Windows XP Patch: RPC Updates Needed for Exchange Server 2003' (http://go.microsoft.com/fwlink/?LinkId=16687)." No mention about XP Pro required. I'd say go for it. Carl -----Original Message----- From: A. Michael Salim [mailto:msalim@xxxxxxxxxxxx] Sent: Wednesday, August 31, 2005 5:14 PM To: [ExchangeList] Subject: [exchangelist] RPC/HTTP on Windows XP Home Edition http://www.MSExchange.org/ Hi, I have a user on MS XP Home Edition with Outlook 2003. Is RPC/HTTP supported on XP Home Edition? Mike