Event ID - 29

Event Id29
SourceLive Communications Active Directory Connector
DescriptionEncountered an unknown failure while attempting to process a user entry. The entry came from naming context DC=contoso,DC=com. This error has caused the replication cycle to fail. It will be retried. Diagnostic information: User DN attribute value: CN=Guest,CN=Users,DC=contoso,DC=com Guid Active Directory attribute name: objectGUID Guid Active Directory attribute value: {A5E68767-26D9-4843-9B07-FDE285F87996} The error occurred while processing attribute isDeleted. The description of the error that occurred is: Decoding Error (hr=0x8007003b).
Event InformationAfter you install and configure Microsoft Office Live Communications Server 2003, Microsoft Windows Messenger users cannot sign in to Live Communications Server and this event will be logged in application event log.

Cause:
This issue occurs if the following groups do not have sufficient permissions to the user objects in the Active Directory directory service: RTCHSDomainServices RTCDomainServerAdmins RTCDomainUserAdmins This scenario may occur if you remove permission inheritance from the domain container in Active Directory before you install Live Communications Server.Sometimes, this issue occurs because authenticated users may not have Read permissions for a user objects container and for the user objects in the container. If authenticated users has been removed or denied Read permissions, you must grant the RTCHSDomainServices group Read permissions on the user objects in the container and on the container.
Resolution:
To resolve this issue, verify the permissions that are assigned to Live Communications Server-related groups in Active Directory.
For more information about permission and other resolution steps click on the link given below.
Reference LinksWindows Messenger users cannot sign in to Live Communications Server, and event ID 29 appears in the application log

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