Windows error 5046 (ERROR_CLUSTER_NETINTERFACE

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: A cluster network interface with the supplied identity already exists.

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ERROR_CLUSTER_NETWORK_NOT_FOUND	ERROR_CLUSTER_NETINTERFACE_NOT_FOUND

ERROR_CLUSTER_NETINTERFACE_EXISTS

The cluster already has an interface record for this adapter or network identity. This often follows a duplicate deployment action or a change to adapter configuration while the cluster is reconciling its network topology.

What to check

Inspect all cluster network interfaces and map them to the physical adapters on each node.
Check for duplicate MAC addresses, cloned VM settings, duplicate IP addresses, or adapter renames.
Do not edit cluster network records directly; correct the adapter or network configuration and let the cluster rediscover it.

Get-ClusterNetworkInterface

Microsoft: Get-ClusterNetworkInterface

Microsoft: Get-ClusterNetwork

Microsoft: Test-Cluster

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