Exchange calendar not allowing me to send meeting responses

I had the same problem.. It was driving me nuts, but I was able to get the error to stop popping up by doing the following.

First off you need to know which calendar you replied to that has the updated meeting.

Once you know that go to Settings > Mail > Accounts

Select the Account that is having the issue

Switch the Calendars sync setting off and delete all from your phone

After a couple of minutes have passed turn it back on

Good to go after that. This is still definitely a bug but that's a work around to get the darn message off your phone until they fix the root issue.

Cheers.

Any news?

I have the same problem. First it was only on certain invites but now it is on all invites from Exchange!

Apple, please reply to this - my phone has become unusable for my calendar appointments.....

Same issue here except I hadn't noticed it was just with updated events. It might be that specific with me too but I'll have to watch for that. I've noticed that this has been occurring on invitations that have already passed though too. I've got seven appointment invitations that continually come back. It adds the new event or updates the existing ones, having the addition/changed event show in color, then I get the "Calendar invitation Your response to the invitation cannot be sent" error and it grays out or deletes it. The same process on my iPad - the same invitations and actions. So I know it's not limited to the phone, but at the server level.

I have another issue though that might, or might not, be related. Information I enter into my calendar on my phone (a 3GS) does not reflect or update my email account (I am using a Gmail address). But it doesn't happen the other way. I can add an event into the Gmail calendar and it shows up right away on the phone, but not the other way around. Is my second issue separate from the first or is anyone else having a similar connection?

Has anyone considered/investigated the ActiveSync piece of the problem? I'm in a corporate environment with iPhones, iPads, Androids, and Blackberries. The only mobile device without problems are the BB's, which we run on a BES. We also have Exchange2003 and find that both iOS and Android devices ALL have issues with calendaring, primarily recurring appointments/meetings. The common denominator - MS ActiveSync. I *did* hear a rumor that Exchange2010 might fix the problem.

OlatheGIS wrote:

Has anyone considered/investigated the ActiveSync piece of the problem? I'm in a corporate environment with iPhones, iPads, Androids, and Blackberries. The only mobile device without problems are the BB's, which we run on a BES. We also have Exchange2003 and find that both iOS and Android devices ALL have issues with calendaring, primarily recurring appointments/meetings. The common denominator - MS ActiveSync. I *did* hear a rumor that Exchange2010 might fix the problem.

Well I'm in the same vote - we haven't investigated Android as of yet; however your notes are not promising for taking that road.

Exchange 2007 SP2.

BES 5.0.1 in use; BB 9300, 9700 (BB5), 9780 & 9800 (BB6).

iOS4.3.3/.4 on iPhone 4 in 2 main US offices, and now iPad 2 4.3.3 in our Corporate head office.

I have iOS5.0 Beta 3 in testing and have duplicated the infamous error with regards to accepting meeting requests on behalf of someone (delagate) yet iOS STILL thinks that the meeting is for the person receiving the meeting request (EITHER in Mail or in Calendar). Oddly enough we CAN deny the meeting request - even in iOS 4.3.3.

IOS was just updated today so I'll give it another go on Monday morning bright and early.

I do have a working case with Apple tier3 and soon to work with their Enterprise team on this matter.