Outlook 2010 Meeting Organizer Issue

I have a weird issue that only seems to be happening with Outlook 2010 users: they double click on a meeting cancellation message in their inbox, and get the following message "the meeting cannot be removed because you are the meeting organizer. When you are a member of a contact group that is removed from the meeting attendee list, a cancellation message might appear" which then disallows them to remove the meeting from their calendar. The issue is they are not the meeting organizer and the message is saying they are. Also they are able to remove it manually from the calendar. Backend server is Exchange 2003, with Outlook 2010 on the front.
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kalajjConnect With a Mentor Author Commented:
Pretty much all the information that's been submitted so far I've found on my own as well, I really was asking here to see if anyone has found a fix or at the very least a work around for this issue.

I will re-iterate the proper way to send to distribution lists, but other than that it seems no one knows how to fix it, or has concrete procedures to follow that will avoid this condition.

Anyone else have any ideas??

Thanks in advance.
As these users are not the original meeting organizer but receiveing the msg.
Sounds like they are Delegates of the meeting organizer, and they have been selected to receive copies of meeting related msgs.

In my E2010,when an OWA user cancells i receive:
No response have been received for this meeting
The meeting will be cancelled. Click send to send a meeting cancellation to attendees

At Outlook i get:
The cancellation has not been sent for this meeting. Click send Cancellation to update meeting attendees

>> the interesting act is that
Once i click send the send-button..this meeting disappears from the view both from Outlook and OWA.

> Is this affecting only for few users or most of the users?
> what is the Outlook build version which is showign the message?
> what happens if the affected users profile is configured @ different machine\different version of Outlook
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kalajjAuthor Commented:
All users are not delegates of the person having te trouble. The client is Outlook 2010, the server is Exchange 2003. It's affecting a few users but not everyone. These users are heavy calendar / meeting users. The issue generally does not affect Outlook 2003 users.
Just want to re-iterate the fact:

Be careful with DLs     Try to avoid sending meeting requests to distribution lists (DLs), particularly ones that you are a member of. If you need to invite all the members of a distribution list, expand the list in the To line before sending the request. If you need to add or remove attendees from a meeting request that you already sent to an unexpanded distribution list, don't expand the list and start adding or deleting names. Instead, cancel the meeting and create a new one


yes, OL2010 behaves a little different than the OL2k3 in handling the Out-dated, stale meeting-requests.
Brian GeeCommented:
<<Also they are able to remove it manually from the calendar.>>

Did you mean they are not able to in your original post?
kalajjAuthor Commented:
yobri, they can remove it manually from the calendar but not using the cancel request mail that comes in.
e aravind, I will make a note of that and let them know.
kalajjAuthor Commented:
kalajjAuthor Commented:
Thanks for the input, but I believe I'll look elsewhere for a solution or better understanding of the issue.
Same issue here and it is very frustrating,  People thing that it is something I am doing and it is not.  2 out of 4 people in the list get this same thing.
Just a thought, but could this issue be a problem with devices, specifically Apple, synching calander appointments to iCloud?
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