Do you mean the Cluster node unable to start cluster service, if yes, we may try to evict the cluster node, then check if the NIC on the node is well and if the NIC driver is up to date, if not, please try to update the NIC driver. Then try to re-add the Cluster node into the cluster.
If we meet issue to re-add the Cluster nodes, please run PowerShell command "Get-clusterLog" then check the detailed log when adding the cluster node.
Thanks for your time!
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