Hello,

One of my users made a complaint I haven't run into before.  She makes extensive use of multiple Calendars in Outlook.  Our backend is Office365 and our client is Outlook 2013. Here is what happened:

• She had an appointment set for a specific day, say the 5th with multiple recipients
• She changed the date on the appointment from the 5th to 12th
• The recipients got a modification notice in their email and accepted it
• The recipients ended up with the original appointment on the 5th and the new appointment on the 12th listed on their calendar.  Most but not all recipients are external exchange environments.
• I told her to do actions like this in two steps: 1) delete the old appointment which will send out a delete notification and then 2) create a new appointment with the same recipients which should create a new appointment message.  This seems to work okay. 

So, my questions are:

1. Should this function as she is trying to use it?
2. Is there a way to keep this a single step process?
3. Any ideas on doing this better?

Thanks,

Jeffery Smith

Hi,

Does this issue happen to all attendees of the recurring meeting?

Can you see duplicate recurring items in the meeting organizer's calendar?

Was the meeting update sent by the meeting organizer or a delegate of the calendar owner?

When the duplicate appears in Outlook, please try to login to OWA and check if you can see the same thing.

In addition, this issue may also happen if you have your calendar items sync to other mail client or mobile devices. Please try to temporarily disable the sync and test again.

Please let me know the result after you have followed the steps above. If above doesn't help, please provide more information about this issue so that we can understand it more clearly.

Regards,

Steve Fan

Forum Support