Article ID: 978370 - View products that this article applies to.
When you try to join an application sharing conference that is hosted in Microsoft Office Communications Server 2007 R2, the conference does not start.
This issue occurs if modalities other than application sharing in this conference have run for over 20 minutes.
To resolve this issue, apply the following update:
(http://support.microsoft.com/kb/977347/ )Description of the cumulative update package for Office Communications Server 2007 R2, Application Sharing Server: April 2010