Meeting Request Quirks in Outlook
The nature of the busy office environment is that things regularly change; meetings in particular. While it might seem practical to update a calendar entry to make sure that the change to the meeting time, place, date or personnel is updated, thanks to a couple of interesting quirks in Microsoft Outlook this isn’t always possible.
There are different reasons why this error occurs in Outlook, depending on which version of the email client you are using. If you are using Outlook 2007, the problem is directly related to updating meeting requests, and we’ll address that issue in the next section.
Outlook 2003 users, meanwhile, will find that the Outlook error “The function cannot be performed because the message has changed" is also caused by updating meeting requests, this time by a delegate, but even when prompted to update the change to the owner’s calendar, nothing happens. As such this will be dealt with separately, further down the page.
Each of these issues requires a separate fix, but both are available from Microsoft; both issues were considered serious enough to warrant patches in the form of Microsoft Office Hotfixes.