I am trying to send out a meeting notice from a C# Windows app that is running on the exchange server of the mailboxes using CDO. I am new to CDO and have had little luck getting anything done. I am trying to send out update notices to attendees of an existing meeting. I can open the meeting, make changes, save changes, everything is fine. The trouble comes when I try to create a CalendarMessage to send out the updates. I have tried everything that I have found in the groups and there's nothing else to try. The server is Win2k Adv Svr SP 4 with Exchange 2000 SP 3. I thought their might be something wrong with the existing meeting I'm opening so I created a new clean one in my test code: //Decare CDO.Appointment app = new CDO.AppointmentClass(); CDO.Configuration cfg = new CDO.ConfigurationClass(); CDO.CalendarMessage msg = new CDO.CalendarMessageClass(); //Set appointment properties app.StartTime = Convert.ToDateTime("5/5/2005 3:00:00 PM"); app.EndTime = Convert.ToDateTime("5/5/2005 3:30:00 PM"); app.Subject = "Test meeting"; //Add attendee and set properties CDO.Attendee attendee = app.Attendees.Add("ConferenceRoom@domain.com"); attendee.IsOrganizer = false; attendee.Role = CDO.CdoAttendeeRoleValues.cdoNonParticipant; //Set config properties - saw in various posts that these were required cfg.Fields["cdoSendEmailAddress"].Value = "ConferenceRoom@domain.com"; cfg.Fields["cdoTimeZoneIDURN"].Value = CDO.CdoTimeZoneId.cdoCentral; app.Configuration = cfg; app.Configuration.Fields.Update(); //Here is the line that errors. I have tried all 3 of the following //methods (one at a time) to get the CalendarMessage object with the //same result msg = app.Publish(); //Or msg = app.CreateRequest(); //Or msg = app.Invite(); Error text: Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done. At the advice of an old post I also verified that the registry setting of OLEDB_SERVICES for the CLSID of OLE DB is correct. If anyone has any advice I would very much appreciate the help. I've already wasted a day on this. Thanks, Greg
