The computer ‘xxx’ is joined to a cluster

We had a job adding a new node to a Cluster the other day. During this process, I encountered the error you would see in the following screenshot.

This server was not a newly installed server. It was a server that was installed before I entered this environment. When I asked the relevant friends, they said that this server did not join any Cluster before.

In addition, Windows Server Failover Cluster services were not installed. I had set up myself. For these reasons, I was surprised to have encountered this error as well.

I’ve been able to bypass this error using the Powershell commands from the screenshot below.

An excerpt from Tim Radney’s solution.

Important note: I ran the above command on the node where I received the error.