Event ID - 8260

Event Id8260
DescriptionCould not open LDAP session to directory <directory name> using local service credentials. Cannot access Address List configuration information. Make sure the server <directory name> is running. <server name>
Event InformationAccording to Microsoft:
The Recipient Update Service is configured to use a Windows domain controller that was demoted. When the Recipient Update Service tries to query the Windows domain controller for an update, it cannot contact it.
If you determine that the issue was caused by the demotion of a Windows domain controller, you can resolve this issue by following these steps:
1. Open Exchange System Manager.
2. Expand the Recipients container, and then click Recipient Update Services.
3. Double-click each Recipient Update Service, and then change the Windows domain controller setting to the new Windows domain controller in the domain.
Reference LinksMSExchangeAL events 8026 and 8260: Cannot access Address List configuration information

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