What does Windows error code 5946 (ERROR_CLUSTER_INVALID_SECURITY_DESCRIPTOR) mean?

 
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ERROR_CLUSTER_NOT_SHARED_VOLUME ERROR_CLUSTER_SHARED_VOLUMES_IN_USE

ERROR_CLUSTER_INVALID_SECURITY_DESCRIPTOR

ERROR_CLUSTER_INVALID_SECURITY_DESCRIPTOR means the supplied security descriptor does not meet cluster requirements. The descriptor may be malformed or grant/deny permissions that are invalid for the target cluster object.

What to check

  • Identify the exact cluster object and configuration action that supplied the descriptor.
  • Compare with the documented permission model or a known-good equivalent object, without copying sensitive ACLs indiscriminately.
  • Review security and FailoverClustering events for access-denied or directory-object errors that preceded the validation failure.

Microsoft: Get-ClusterLog

Microsoft: FailoverClusters PowerShell module

Microsoft: Failover Clustering overview


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