We are experiencing this major issue in our environment.

User creates a meeting appointment with multiple recipients (internal and external), when meeting accepted by multiple users; calender item's organizer field changes to only the organizer. Hence, user unable to add/remove any recipients in the "TO" field although user is the organizer. Everything is grey-out. User can only see the recipients in the Scheduling Assistance but unable to edit anything.

Has anyone experienced this issue? any fixes?

Hi,

I still have some questions about this issue:

1. "calender item's organizer field changes to only the organizer" Isn't this expected?

2. It seems the organizer doesn't have the permission to edit the meeting and the attendees, could you please confirm whether the organizer invited any distribution group which the organizer himself is a member of?

Please provide some screenshots about this issue too, like the "grey-out", this will help me understand the issue more clearly.

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Regards,

Melon Chen
TechNet Community Su

Hi,

How is this going?

Regards,

Melon Chen
TechNet Community Su

I was thinking about that and even if I did not see the screenshot, it looks like the user lost meeting ownership. This can be caused by errors e.g. in old version of iOS (http://blogs.technet.com/b/exchange/archive/2012/10/23/ios6-devices-erroneously-take-ownership-of-meetings.aspx). 

It might be interesting to check meeting invitation properties using low level tool such as MFCMAPI. This could answer what's