Windows error 5945 (ERROR_CLUSTER_NOT_SHARED

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The directory or file is not located on a cluster shared volume.

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ERROR_CLUSTER_GROUP_BUSY	ERROR_CLUSTER_INVALID_SECURITY_DESCRIPTOR

ERROR_CLUSTER_NOT_SHARED_VOLUME

ERROR_CLUSTER_NOT_SHARED_VOLUME means the target path is not located on a Cluster Shared Volume (CSV). A CSV-specific operation cannot be applied to ordinary local storage or a non-CSV cluster disk.

What to check

Verify the path and identify the backing disk or volume.
List the cluster shared volumes and confirm the intended disk has been added to CSV.
Do not convert storage to CSV until workload, filesystem, and supported access requirements are verified.

Get-ClusterSharedVolume
Get-ClusterResource

Microsoft: Cluster Shared Volumes overview

Microsoft: Manage Cluster Shared Volumes

Microsoft: Add-ClusterDisk

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