Hello all, When users log in to OWA everything works fine with the exeption of the Calendar function. When a user clicks on their personal Calendar, everything appears as normal. However, when a user attempts to add a new appointment or generate a meeting request, an 'HTTP 404 Not Found' error occurs. There is nothing in event viewer on the server. This feature was working fine before applying the Outlook 2003 patch for OWA. Any info is appreciated.