Event ID - 9109

Event Id9109
SourceMSExchangeAdmin
DescriptionOALGen encountered an error [0x]. This may be normal operation. Check other logged events to see if this is a serious error.
Event InformationAccording to Microsoft

Cause:
This problem can occur if the permissions are either incorrect or missing for the Authenticated Users group on the CN=Addressing and CN=Address-Templates objects in the configuration container. This problem can occur if one or both of the following conditions are true:
1.You migrated the offline Address Book from Microsoft Exchange Server 5.5 to Active Directory.
2.You promoted the Microsoft Windows 2000 Server-based computer that Exchange 2000 is installed on to a domain controller.
3.In either scenario, this problem occurs because the msExchTemplateRDN attribute is missing or because the local system account cannot access the msExchTemplateRDN attribute. Offline address list generation may be unsuccessful if the System Attendant MAPI profile cannot retrieve the msExchTemplateRDNs attribute from the following object:
CN=Address-Templates,CN=Addressing,CN=,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=,DC=
Resolution:
1.Perform additional logging.
2.Use the Nspitool command to verify permissions.
3.View the Access Control List (ACL) of the Exchange objects.
4.Assign permissions to the Authenticated Users group.
Reference LinksEvent Id:9109 Source Id:MSExchangeAdmin

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