If a client is not receiving updates automatically, follow this process.
Symantec Endpoint Protection clients then download these updates from the Symantec Endpoint Protection Manager.
You can either allow these clients to contact the public Symantec Live Update servers, or set up an internal Live Update server with Live Update Administrator.
On January 5th, 2015, Symantec Endpoint Protection version 11.0.x will reach end of support life.
However, while the clients successfully connect and report into the management console, content does not update on the version 14 clients.
If you are not able upgrade Symantec Endpoint Protection Manager to version 14, you must assign these clients a Live Update policy that allows them to get content instead through Live Update.