This Knowledgebase article provides information about the compatibility of the Windows Server 2012 Load Balancing / Failover (LBFO) network teaming solution when Neverfail Heartbeat is installed.
Neverfail Heartbeat does not support use of Windows Server 2012's Load Balancing / Failover (LBFO) network teaming solution.
To allow the Neverfail Heartbeat Packet Filter to operate properly, the LBFO network teaming solution must be disabled. Failure to disable the LBFO may result in the Neverfail Heartbeat Packet Filter improperly functioning.
Neverfail Heartbeat installed on Windows Server 2012