The Risk logs from Symantec Endpoint Protection (SEP) 12.1 RU6 clients are not uploaded to Symantec Endpoint Protection Manager (SEPM)
When the "Upload maximum size" is set to a value larger than 350, a client with that many virus and spyware log events occurring in a single upload period is unable to upload these logs to SEPM
This problem is fixed in Symantec Endpoint Protection 14. For information on how to obtain the latest build of Symantec Endpoint Protection, see: ‘Download the latest version of Symantec Endpoint Protection’.
To work around the issue: