Consider the following scenario:
- You use Outlook in cache mode to send a meeting request to a recipient in a Microsoft Exchange Server 2010 environment.
- The recipient quickly responses the meeting request. For example, the recipient responses the meeting request in one minute.
- You receive the response from the recipient and then you click the Tracking tab on the meeting request in Calendar.
This issue occurs because the Exchange store driver and the calendar assistant incorrectly sets the meeting response to processed when the associated calendar item is not available.
To work around this issue, use Outlook in online mode to send the meeting request.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.