Windows error 5044 (ERROR_CLUSTER_NETWORK

Status / error code:		Category:

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

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ERROR_CLUSTER_LOCAL_NODE_NOT_FOUND	ERROR_CLUSTER_NETWORK_NOT_FOUND

ERROR_CLUSTER_NETWORK_EXISTS

The cluster has already discovered or registered the network that the operation is trying to create or register. Duplicate network work should be avoided because overlapping networks and adapters can make cluster communication ambiguous.

What to check

List cluster networks and their associated interfaces before making topology changes.
Check for duplicate or overlapping IP configuration, VLAN assignments, or adapter names introduced during deployment.
Run cluster validation after correcting the underlying network configuration.

Get-ClusterNetwork; Get-ClusterNetworkInterface

Microsoft: Get-ClusterNetwork

Microsoft: Get-ClusterNetworkInterface

Microsoft: Test-Cluster

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