Hello we have Symantec Endpoint Protection 12.1 MP1 installed on Windows7 en Windows XP workstations. When Symantec processes an definition update on these client worksations all network connections at the client are disconnected for one second. What is causing this behaviour? We also use Symantec 10.1.8 at some other workstations and they don't have this problem. I hope someone can help.