Hey,
There might be an issue with your network connectivity. Have you checked whether nodes can reach other via assigned networks? https://video2.skills-academy.com/en-us/azure-stack/hci/manage/validate-qos
In addition, check the following thread, where similar solution is discussed.
https://next.nutanix.com/installation-configuration-23/hyper-v-cluster-hangs-at-validation-cluster-wizard-testing-options-with-failover-manager-7912
In case you need to build a 2 node Failover Cluster, you can take a look at StarWind VSAN as a shared storage option. Check for more info: https://www.starwindsoftware.com/starwind-virtual-san
Cheers,
Alex Bykovskyi
StarWind Software
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