Hi there,
I am having the issue where the VMM shows "host not responding" and VMM and hyper-v functionalities are gone however the VMs and hosts, all are up and running.
My scenario was I had 3 host in a cluster and I added 3 more new hosts without issues. Also able to migrate vm back and forth from new host to old and old to new. I faced this issue 3 times (with in 2 weeks, only with the new hosts, one new host at a time) and all 3 times I restarted the host and everything was fine. but I am afraid it will come back again after some time.
I came across these 2 post with same situation:
https://social.technet.microsoft.com/Forums/en-US/40a41147-c0c0-4a20-86dd-23d9eb8b3bab/vmm-cluster-host-not-responding?forum=virtualmachinemgrclustering
I have followed the steps from the posted link but the issue appeared again.
For me when it happens, i have found that the physical network adapter went down and came up,
Any suggestion will be appreciated.
Thanks,