Hyper-V failoer cluster "STATUS_CONNECTION_DISCONNECTED(c000020c)" error

First you see an error in the host machine event viewer log as;

"The Transaction (UOW=%1, Description='%3') was unable to be committed, and instead rolled back; this was due to an error message returned by CLFS while attempting to write a Prepare or Commit record for the Transaction.  The CLFS error returned was: %4." 

Event Source is "Kernel-TM" and Event ID is "1"

Couple of minutes later;

"Cluster Shared Volume 'Volume4' ('CSV04') is no longer available on this node because of 'STATUS_CONNECTION_DISCONNECTED(c000020c)'. All I/O will temporarily be queued until a path to the volume is reestablished." listed in event viewer.
As mentioned in http://deusexmachina.org.uk/evdoco/event.php?event=916
this event is observed on cluster nodes, when there is a drive mapping which uses the same drive letter as one of the cluster disks.

You have better check if you have mapped disks on Hyper-V failover cluster hosts and virtual machines. You can also be sure whether bus configuration on virtual machines DVD drives are selected as "no media" or having correct media path.

In our environment a DC lost connection with host and;

"This computer was not able to set up a secure session with a domain controller in domain... due to the following:

The remote procedure call was cancelled.

This may lead to authentication problems. Make sure that this computer is connected to the network. If the problem persists, please contact your domain administrator.

ADDITIONAL INFO

If this computer is a domain controller for the specified domain, it sets up the secure session to the primary domain controller emulator in the specified domain. Otherwise, this computer sets up the secure session to any domain controller in the specified domain." received.