Article ID: 2488968 - View products that this article applies to.
When you try to accept a meeting request in Microsoft Office Outlook 2007 or in Microsoft Outlook 2010, the information bar displays the following error message:
Additionally, you notice that the meeting does not appear as "Tentatively Accepted" in your calendar.
The AutomateProcessing calendar setting for your Microsoft Exchange Server 2007 or Microsoft Exchange Server 2010 mailbox is set to None.
The Exchange Server administrator must start the Exchange Management Shell on the Exchange mailbox server. Then, run the following command in the Exchange Management Shell:
Exchange Server 2007:
Exchange Server 2010:
Where username is the affected user's alias.
For more information about changing the AutomateProcessing argument on multiple mailboxes at the same time, click the following article number to view the article in the Microsoft Knowledge Base: