I'm running Exchange 2003 on Windows 2003 server with all the latest service pack and hotfixes. When I try to change password from Outlook client which is logon to non-Exchange domain. I receive this error message: "The Windows NT Domain password could not be changed. A required action was not successful due to an unspecified error. " Check on KB; found same issue for Windows 2000 server but could not find anything for Windows 2003 server. Hope someone can help me. SIH