Microsoft KB Archive/941103

= Communicator 2007 does not update the free/busy information as scheduled =

Article ID: 941103

Article Last Modified on 9/7/2007

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APPLIES TO


 * Microsoft Office Communicator 2007

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SYMPTOMS
Microsoft Office Communicator 2007 does not update the free/busy information as scheduled.

For example, you schedule a meeting for a Communicator 2007 user in Microsoft Office Outlook 2003. When you do this, the Outlook 2003 calendar shows that the Communicator 2007 user is scheduled to be in a meeting. However, in Communicator 2007, the presence status does not show that the Communicator 2007 user is in a meeting.



CAUSE
This issue occurs when the Outlook client is not Microsoft Office Outlook 2007 and when the server is running a version of Microsoft Exchange Server that is not Microsoft Exchange Server 2007. This combination may cause the updates to the free/busy information to be delayed. This delay is by design for Outlook 2003 and for Microsoft Exchange Server 2003.

The updates to the free/busy information are delayed for the following reasons:
 * By default, Outlook 2003 only updates the free/busy information every 45 minutes. Additionally, you cannot decrease this interval because of bandwidth issues and because of scalability issues.
 * The replication of the public folder may cause delays.
 * In cross-forest scenarios, delays occur when you use the Inter-Organization Replication tool to replicate the free/busy information across forests.



RESOLUTION
To resolve this issue, upgrade Outlook 2003 to Outlook 2007. Additionally, upgrade Exchange 2003 to Exchange 2007.



MORE INFORMATION
The Exchange 2007 Availability service improves the calendaring of information. The Exchange 2007 Availability service also improves the meeting scheduling by providing secure, consistent, and up-to-date free/busy information to computers that are running Outlook 2007. Outlook 2007 uses the Exchange 2007 Autodiscover service to obtain the URL of the Exchange 2007 Availability service. Essentially, the Exchange 2007 Autodiscover service helps Outlook 2007 locate the various Exchange Web Services. For example, the Exchange 2007 Autodiscover service helps Outlook 2007 locate the Exchange Unified Messaging (UM) service, the Offline Address Book (OAB) service, and the Exchange 2007 Availability service.

Additional query words: OL2003 Outlook2003 OL2007 Outlook2007

Keywords: kbtshoot kbexpertisebeginner kbprb KB941103

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