Virtual MS Cluster Node “Invalid Network Format” Error

mscluster

I came across an interesting scenario recently where a node that is part of a Windows Cluster (hosting a SQL Cluster) on Windows Server 2012 R2 suddenly started reporting errors. The node is part of a 2-node cluster with a 3rd VM acting as a file share witness for the cluster, and had just been moved between vApps in an IaaS / cloud environment to account for a DR provision (where DR is based on vApp membership, not at individual VM level). Once rebooted, the cluster was showing some strange errors, and the cluster name had changed in the Failover Cluster Manager from 'MSCLUSTER.DOMAIN.LOCAL' to 'MSCLUSTER.MSCLUSTER'. On renaming the cluster manually, the ever helpful Microsoft error message (seen in the image attached to this post) … [Read more...]