You can update via internet, luadmin or manually by jdb
How client computers receive content updates
How to update virus definitions and other content with Symantec Endpoint Protection and Symantec Network Access Control
Virus Definition Update FAQ
How to update definitions for Symantec Endpoint Protection Manager (SEPM) using a .jdb file
How to manually update definitions for a managed Symantec Endpoint Protection Client using the .jdb file
How to Update Definitions for Symantec Endpoint Protection using the Intelligent Updater
There is one simple way which can follow to update the defintion in sepm as well as clients
You can update the jdb file in symantec server it can update the both
Path for update the .jdb
%ALLUSERSPROFILE%\Symantec\Symantec Endpoint Protection\inbox
%ALLUSERSPROFILE%\Symantec\Symantec Endpoint Protection\CurrentVersion\inbox
Source to download the defintion
Other way is configure the sepm to download the defintion from symantec server to distrbute in clients
Configuring the LiveUpdate download schedule for Symantec Endpoint Protection Manager
How to configure LiveUpdate to use alternate sources through the Symantec Endpoint Protection Manager Console
Do you need more help here ?
If you have received your answer please update your thread (Mark A Solution).If multiple post help you please select "Request split solution" option
Have you run the liveupdate. What is the error?
Please check the below article.
To run LiveUpdate:
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Your requirement complete or do you need any more help?
I have an additional question here: can I put .jdb file(s) somewhere on a internal network (internal FTP) and then set up this location as default for an unmanaged SEP client? This purpose is to make a semiautomatic update for SEP umnanaged clients.
Shoud I put this as separate discussion?
No, it wount work that way. You need to use Luadmin. There is a third party content update option available you may check that.
Rafeeq, thank you. I see that Live Update is the only option.