What does Windows error code 5013 (ERROR_GROUP_NOT_FOUND) mean?

ERROR_GROUP_NOT_FOUND

The requested group name no longer resolves

Cluster groups and cluster resources are separate object types. A role displayed to an administrator is represented by a group containing its resources. This code indicates that the requested group object cannot be opened; it is not equivalent to a known group being offline.

Stale role names are common after a role is removed and recreated. Scripts that cache a display name or assume the name of a vendor-created group should enumerate current groups before modifying ownership or state.

What to inspect

• List current groups and compare exact names, including spaces and vendor-specific role names.
• Verify that a resource name was not passed to a group operation or vice versa.
• Confirm the management session is connected to the intended cluster before treating the missing group as configuration loss.

Get-ClusterGroup | Sort-Object Name
Get-ClusterResource | Format-Table Name, OwnerGroup

References

• Microsoft Open Specifications: Cluster Resources and Groups
• Microsoft: Get-ClusterGroup
• Microsoft: Get-ClusterResource

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