A few weeks back, I was at a Microsoft event where the presenter was struggling to connect to a Windows Server cluster using the Cluster Administrator tool. It turned out that the problem was down to having started devices in the wrong order (it should be storage, then network, then cluster nodes) but when one member of the audience suggested entering .
as the cluster name in the Cluster Administrator dropdown he was able to connect to the cluster (with much relief!)… may be worth remembering for the future.