Devices running iOS 6 are cancelling calendar appointments sent to distribution lists

Ok, looks very similar to an issue we have at the moment.

What's your impression is Microsoft the right addressee for this?

We did EAS with IOS Devices since a long time quite flawlessly...until IOS 6 came.

Does anyone know if Apple is aware of this issue?

By the way, from what I have found the thing goes like this:

User creates an appointment and invites a number of colleagues.

A change occurs (maybe a delegate has accepted the appointment or the room has changed) and the iPhone offers in the calendar app the option to approve or accept the change by clicking an "OK" Button.

This results in two new messages to be transfered, one is the cancellation and the other the invitation with the poor guy that used the iPhone as owner of the appointment.

That's my impression at the moment.

Ok, to clarify: So far I am not able to reproduce this with my own device. That leeds to the impression, that it could be connected to user behaviour (...holding the device wrong - Thanks Paul 😁) or the installation or configuration of the mobile device...!?

Stay tuned.

We have another thread going over here as well: https://discussions.apple.com/thread/4368289?start=0&tstart=0

We are seeing it with Exchange 2007 SP3 RU6. So far, no joy with Microsoft Premier Support. They are directing us to Apple.

Thought so, thus I postponed triggering our TAM.

Very disappointing!

Thanks for the update.

I am going contact Enterprise AppleCare. Does anyone know how to reliably reproduce the issue?

Not really, I didn't succeed in trying to reproduce this with my devices.

Seems to be connected to an "infected" device. Maybe this could be a result of the update process.

I did mine over the air and the colleague who is able to reproduce this issue has done it by using itunes with the inevitable multiple download-tries of the image...

Just to re-emphasise, this is only my impression and I am far from beeing fully convinced about that.

Cross my fingers.

@BishopTJ: That's promising that you were able to reproduce the issue while detailed logging was running. We are pursuing this with MS and Apple too, but you are ahead of us. Beyond sending the invitation to a DL with 50+ members, what other steps did you need to take to trigger the reproduction? Did people have to accept the meeting in OL or on their iDevice? Did a person need to do something to the meeting on their calendar to trigger the cancellation message?

Thanks for any details you can provide. I think the more of us who are reporting this issue and can reproduce it, the better.

Similarly in my company, the invitee who improperly issued the cancellation to all other invitees said that she didn't touch the meeting in question. Upon further discussion, she said she may have scheduled an overlapping meeting, but still insisted that she did not touch the meeting that she improperly canceled.

I have a Premier ticket open with Microsoft and an Enterprise AppleCare ticket open with Apple. I'm still on the ground floor with both of them. I will also continue to post updates to this thread.

I haven't seen the issue, but my question would be why is Echange allowing an invitee to cancel a meeting for everyone?

In this case the exchange actually just transports messages. These messages are interpreted by a Client (Outlook...), processed and transmitted to the Database.

The mobile device creates somehow malformed messages (I assume...) to the other invitees, where the respective invitee appears in the Organisation field. Together with the ID of the element is this what allows him to cancel the appointment. Strangely I could observe, that the invitee with the trouble causing device and the original Organizer still find the element in their calendar.

It appears that we are also experiencing the same issue. Who knows when it started but it was just escalated to my group. We opened a case with both MS and Apple, our TAM made us aware of this well. We're running Exchange 2003.