Article ID: 2647095 - View products that this article applies to.
Consider the following scenario:
This issue occurs because an object reference in a Group Chat function is set to a NULL when the function tries to determine whether the client is local or remote. This causes the Channel service to exit when the logging is set to a DEBUG level or a higher level.
To resolve this issue, install the following cumulative update:
(https://support.microsoft.com/kb/2647090/ )Description of the cumulative update for Office Communications Server 2007 R2 Group Chat server: January, 2012
To work around this issue, set the log level of the Channel service to INFO level on all Group Chat servers in the pool.
For more information about how to set log levels for the Channel service, Lookup service, or Web service, visit the following Microsoft website:
How to set log levels for the Channel service, Lookup service, or Web service
Article ID: 2647095 - Last Review: January 19, 2012 - Revision: 1.0