Event ID - 1024

Event Id1024
SourceClusSvc
Description The registry checkpoint for cluster resource Microsoft Exchange Directory could not be restored to registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeDS. The resource may not function correctly. Make sure that no other processes have open handles to registry keys in this registry subtree.
Event InformationWhen attempting to bring the Microsoft Exchange Directory resource online after an online restore, the resource will not start and enters a failed state. The Application Event Log reports an event 1002.
CAUSE: When a service is brought online, the state of the registry is restored to the last known good state. This is the state of the registry prior to the failure and is known as a Registry CheckPoint. During an online restore, the backup program adds the registry key "Restore in Progress". This key is required to recover from an online restore. Because of the Registry CheckPoint process in Microsoft Cluster Server (MSCS), the Restore in Progress key is overwritten. When the directory service is brought online, the Exchange database engine does not find a Restore in Progress Key and enters the normal initialization process. The Exchange database engine is expecting to find a consecutive log sequence to include an EDB.log file. Because this is not the case, the Exchange database engine fails to initialize with a -528 JET_errMissingLogFile.
Reference LinksXADM: Directory Service Restore to Cluster fails with Event 1002

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