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"ErrorCalendarIsOrganizerForAccept" when attendee who is not the organizer tries to accept a meeting RRS feed

  • Question

  • Hello,

    I try to accept a meeting using EWS from a specific attendee (who is surely not the organizer of the meeting), but I get an error "ErrorCalendarIsOrganizerForAccept" ("You can't accept this meeting because you are the meeting organizer") although the attendee and the organizer are completely different.

    I have an admin user on the exchange server, I initialize an ExchangeService instance using this account, and impersonate to the attendee I want to accept with. Then, I get the appointment I want to accept using Appointment.Bind() (wiuh the ExchangeService, and the ItemId), and then I run appointment.accept(true) and get the exception that says I can't accept if i am the organizer (although i am not).

    I would like to get help solving this problem,

    Thanks!

    Monday, December 2, 2019 8:35 AM