Attendees receive a meeting update after the event reminder is triggered
After the reminder for an event is triggered, attendees receive a meeting update without any changes. Additionally, attendees receive a meeting request in their Inbox that includes the No Response Required option.
The organizer of the meeting performed an action on his or her iOS 9.x device that sent a change for the appointment to Exchange. A new behavior was introduced in version 16 of the Exchange ActiveSync (EAS) protocol in which Exchange sends meeting updates when an EAS client sends a change for the appointment.
Microsoft is researching this issue and will post more information in this article when the information becomes available. Customers who experience this issue should contact Apple for help.
You can work around this issue by using Microsoft Outlook for iOS.
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Article ID: 3108249 - Last Review: 11/20/2015 16:25:00 - Revision: 3.0
Exchange Server 2016 Enterprise Edition, Exchange Server 2016 Standard Edition, Microsoft Exchange Online