Article ID: 2783949 - View products that this article applies to.
Consider the following scenario:
This issue occurs because it takes longer than expected for the Group Chat server to synchronize with Active Directory Domain Services (AD DS).
To resolve the issue, install the following cumulative update:
(https://support.microsoft.com/kb/2783873/ )Description of the update for Office Communications Server 2007 R2, Group Chat Server: December, 2012
Article ID: 2783949 - Last Review: December 14, 2012 - Revision: 1.0