Since updating to 14.0.x for both Manager and clients, the clients seem to be communicating and updating the Manager but appear offline and only sometimes show online. Despite tuning configurations made at the Manager, there continues to be a number of clients that do not look to communicate completely with the manager and show a proper online status.
This issue is fixed in Symantec Endpoint Protection 14.2 RU1. For information on how to obtain the latest build of Symantec Endpoint Protection, see Download the latest version of Symantec Endpoint Protection.”