"Repair update" message after you send a meeting invitation to a distribution list in Exchange Server 2013

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Symptoms

As a meeting organizer, your own Deleted Items folder receives a "repair update" message for all attendees of a particular meeting in a Microsoft Exchange Server 2013 environment. This problem occurs if you address the meeting invitation to a distribution list, but you don't receive an accept/decline/tentative response from the attendees.

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Cause

The meeting organizer doesn't receive an accept/decline/tentative response after selecting the No response required option on the meeting, or if the attendees select the option to accept the invitation and not send a response.

This problem occurs because the calendar repair assistant inspects the attendee's appointment and finds that the attendee accepted or tentatively accepted the meeting. The tool then checks the organizer's attendee list to verify that the attendee is included in the list. Then, the calendar repair assistant adds the attendee to the organizer's list, and a "repair update" message is added to the Deleted Items folder in the organizer's mailbox.

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Resolution

To fix this issue, install Cumulative Update 13 for Exchange Server 2013 or a later cumulative update for Exchange Server 2013.

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More Information

After you install this cumulative update, the calendar repair assistant takes the following actions in this situation:

The tool checks to verify that the organizer selected the No response required option.
If the organizer selected the No response required option, or if the attendees selected to accept the invitation without a response, the tool does not update the organizer's attendee list.

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