Group Update Provider (GUP) related Double Byte Character Set (DBCS) strings is corrupted in Symantec Endpoint Protection (SEP) client GUI - [View Logs] - Client Management {View Logs] - [System Logs].
This issue is fixed in Symantec Endpoint Protection 14.2 RU1 MP1. For information on how to obtain the latest build of Symantec Endpoint Protection, see Download the latest version of Symantec Endpoint Protection.