Replication fails due the the timeout threshold being reached.
Call to service method https://FQDN:8006/apprecovery/api/core/replicationcomms/slave/agents/replicationJob/sync POST failed: Service method call timed out
Error: replay.core.contracts.replication.unabletoconnecttoremoteserverexception unable connect remote server
The timeout threshold for the replication was reached. This timeout references 'no response' between the cores, it does not refer to the longevity of the job running (for which there is no timeout for).
Windows Registry Disclaimer:
Quest does not provide support for problems that arise from improper modification of the registry. The Windows registry contains information critical to your computer and applications. Make sure you back up the registry before modifying it. For more information on the Windows Registry Editor and how to back up and restore it, refer to Microsoft Article ID 256986 “Description of the Microsoft Windows registry” at Microsoft Support.