Hi there,
Once you have removed all the high availability virtual machines from Failover Cluster, you can perform the following steps:
Evict one of the nodes.
Remove-ClusterNode -Name node2
On the last node, destroy the cluster.
Get-Cluster -Name Cluster1 | Remove-Cluster -Force -CleanupAD
This might also occur when antivirus software that is not cluster-aware is installed, upgraded, or reconfigured. For example, this problem is known to occur after you install or migrate to Symantec Endpoint Protection 11.0 Release Update 5 (RU5) on the cluster nodes.
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