Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007
Topic Last Modified: 2007-01-25

Microsoft Exchange Server 2007 Unified Messaging (UM) generates Active Directory errors and events in Event Viewer so that you can troubleshoot and verify the performance when an Exchange 2007 Unified Messaging server accesses the Active Directory directory service. Event Viewer tracks the following kinds of events in the following order based on importance:

Error events
Warning events
Informational events

Active Directory System Error and Events

Table 1 provides a list of Active Directory events that you can use to troubleshoot and monitor Unified Messaging.

Table 1 Active Directory system events

Event ID	Category	Event type	Logging	Value or Description	Class
1020	UMCore	Information	LogAlways	Directory search key "%1" returned the following results: "%2".	Active Directory
1106	UMWorkerProcess	Warning	LogAlways	The Unified Messaging server encountered an error while trying to access Active Directory in the call with ID "%1". "%2"	Active Directory
1107	UMWorkerProcess	Warning	LogAlways	The Unified Messaging server encountered an error during the call with ID "%1" while trying to read from Active Directory. The operation cannot be retried. Additional information: "%2"	Active Directory
1108	UMWorkerProcess	Warning	LogAlways	The Unified Messaging server encountered a data error while trying to read information stored in Active Directory during the call with ID: "%1". This event may have been caused because the UM configuration data that is stored in Active Directory is internally inconsistent. Additional information follows: "%2"	Active Directory
1110	UMCore	Warning	LogAlways	The Unified Messaging server failed to register for directory change notifications on the UM DialPlan container. The Unified Messaging server will retry this operation after "%1" minutes. Additional information: "%2"	Active Directory
1111	UMCore	Warning	LogAlways	The Unified Messaging server failed to register for directory change notifications on the UM IPGateway container. The Unified Messaging server will retry this operation after "%1" minutes. Additional information: "%2"	Active Directory
1121	UMCore	Warning	LogAlways	The Unified Messaging server failed to register for directory change notifications on the Servers container. The Unified Messaging server will retry this operation after "%1" minutes. Additional information: "%2"	Active Directory
1122	UMCore	Warning	LogAlways	The Unified Messaging server failed to register for directory change notifications on the UM AutoAttendant container. The Unified Messaging server will retry this operation after "%1" minutes. Additional information: "%2"	Active Directory
1144	UMCore	Warning	LogAlways	An unhandled exception occurred while an Active Directory configuration change notification was being processed. This error may have been caused by network connectivity issues between Active Directory domain controllers and the Unified Messaging server. Additional information: "%1"	Active Directory
1145	UMCore	Warning	LogAlways	The Unified Messaging server failed to register for directory change notifications on the UM HuntGroup container. The Unified Messaging server will retry this operation after "%1" minutes. Additional information: "%2"	Active Directory
1155	UMCore	Error	LogAlways	The Active Directory directory service failed to initialize. Additional information: "%1"	Active Directory

For More Information

For more information about performance objects and counters that are available for Unified Messaging, see Performance Counter Reference for Unified Messaging.
For more information about how to troubleshoot a Unified Messaging server, see Unified Messaging Server Issues.
For more information about other errors and events for Unified Messaging, see Unified Messaging Errors and Events Reference.