Client is install as unmanage on system.

Internet connection is running fine but problem is live update not be run automatically.

I manuall click on live update for update the defintion.

Daily it is not fine for update manually.

sep - 12.1 ru4

See this thread

https://www-secure.symantec.com/connect/forums/how-change-live-update-definition-settingunmanage-client

Open the the client interface shield.

Change Setting - Client Management - Configure Settings - LiveUpdate

Set the frequency continuously.

edit

see the link

HOW TO change the LiveUpdate source of an unmanaged Windows Symantec Endpoint Protection 12.1 Client

So , its not running only the scheduled updates then? check this

Symantec Endpoint Protection 12.1 clients do not run LiveUpdate when scheduled

http://www.symantec.com/business/support/index?page=content&id=TECH170114

So did you set a schedule? You can have it check continuously or hourly...

I have not set schedule. It is unmanage client.

You need to set the schedule otherwise it will not run updates automatically...

Set a scheudle.

How to schedule LiveUpdate for a Unmanaged Symantec Endpoint Protection client using the Windows Task Scheduler on Windows XP or Windows Server 2003

http://www.symantec.com/business/support/index?page=content&id=TECH96237

You still need to set a scheduled, unmanaged or not, so it can get updates.

Open the GUI and go to Change Settings >> Client Management >> Configure Settings >> LiveUpdate tab

This is where you need to setup a schedule.