I have installed the last version LUA (Version: 2.3.6.47). Every day, the download definitions of SEP 14.1 fail. Finally, after many times to executed the schedule, it finish succesfully.
I have other schedule task (SEP 12.1.5) doesn't have problem when it to donwload.
Do you have any idea about to solve the problem about donwload when the definitions of "Symantec Advanced Endpoint Protection 14.0 RU1 English"