Article ID: 973384
This article applies to the following products:
After you restart a computer that is running Microsoft Office Communications Server 2007 R2 Group Chat Server, the Group Chat service does not start. This occurs when the Channel Server (mgcchans) or the Compliance Server (mgccompl) tries to start before Microsoft Message Queuing starts. However, the Channel Server cannot function without Message Queuing. Therefore, the Group Chat service does not start.
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756Setting both the Group Chat Channel Server and the Compliance Server to depend on Message Queuing resolves this issue after you restart the computer. The registry keys described here should be created after you restart the computer. Afterward, Message Queuing starts before the Channel Server and the Compliance Server. To do this, follow these steps:
(http://support.microsoft.com/kb/322756/ )How to back up and restore the registry in Windows
To resolve this issue, apply the following update: