Microsoft Exchange 2007 You cannot respond to a meeting without an organizer

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Our office upgraded our server to Exchange 2007 (SP1). However, users are still using Ms Office Outlook 2003 (SP3) and have been encountering this error message when accepting or rejecting some meeting requests: “You cannot respond to a meeting without an organizer. You must add an Organizer field to the item.” In addition, we noticed that the users did have the organizer field filled out. Those users accepting or rejecting meetings through their iPhones do not encounter the error message.  Users are also unable to use the delegate function in accepting or rejecting meeting. There are times that show the meeting has already been accepted even when they had not previously accepted it.  There are no noticeable similarities in the meeting requests that encounter the error to pinpoint the source of the error. Can you please help us resolve this issue? Thanks!

Answered By 0 points N/A #105016

Microsoft Exchange 2007 You cannot respond to a meeting without an organizer


Hallo Robert_Taylor,

I will suggest for you the workaround that you will try using it to solve the problem and see if it will work. You will be required to remove the user that are encountering the problem when accepting or rejecting messages, and then save and close the application but do not send an update.

You will thereafter open the application and re-add the user that you removed, save and close the application, and this time send the update. The user should be able to receive a new invitation, and also accept or reject the messages without encountering any problem. But in case the problem is faced by all users, then I will suggest that you just remove the whole address book from outlook and then re-add it again.

Hope this helps.


Mahesh Babu


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