Milestone events for Communicator Web Access are recorded in the Office Communications Server event log. These milestone events can include everything from notification that the Communicator Web Access service was started to the date and time that a virtual server was modified. This makes the event log your primary tool for diagnosing and troubleshooting problems with Communicator Web Access.
A secondary tool for diagnosing and troubleshooting problems with Communicator Web Access is the Office Communications Server Logging Tool, a utility that generates output primarily of interest to Microsoft support personnel.
Both the Event Viewer and the Logging Tool are discussed in the following sections of this guide: