Windows error 5927: meaning and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The cluster network is not valid for an IPv6 Tunnel resource. Check the configuration of the IP Address resource on which the IPv6 Tunnel resource depends.

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ERROR_CLUSTER_INVALID_IPV6_NETWORK	ERROR_QUORUM_NOT_ALLOWED_IN_THIS_GROUP

ERROR_CLUSTER_INVALID_IPV6_TUNNEL_NETWORK

ERROR_CLUSTER_INVALID_IPV6_TUNNEL_NETWORK means an IPv6 tunnel address resource does not match a valid cluster network or its dependent IP resource. The tunnel resource cannot be validated in the current network topology.

What to check

Check the tunnel resource dependencies and the underlying IP Address resource first.
Verify that the tunnel endpoint and IPv6 route are available on every possible owner node.
Use cluster logs to determine whether the failure occurred during online, move, or validation.

Get-ClusterResource
Get-ClusterNetwork

Microsoft: Get-ClusterLog

Microsoft: Validate hardware for a failover cluster

Microsoft: FailoverClusters PowerShell module

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