Cannot create Cluster – the computer X is joined to a cluster

Recently attempting to install a new three node cluster I ran into a new issue. Once I was able to run a successful “Cluster Validation Check” and chose the option to install a new cluster I received a message “The computer xxx is joined to a cluster”.

select_servers

 

 

My first thought then was to remove clustering and try a fresh install of the feature.  That didn’t go to well either, I was informed that the node was an active node of a cluster that it in fact was NOT.

remove_clustering

I did a bit of research and found that I could clear this with using PowerShell. To do so I had to open PowerShell as an administrator and load the failoverclusters module. Then I could run the command clear-clusternode to forcefully clean up the cluster node.

PoSH

Once the node was cleaned up I was able to proceed with the cluster build.

 

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