Hello,
Is the SEPM server updated with Latest Virus Definitions?
Is there Internet on the SEPM server?
Incase, the SEPM not updated with Latest Definitions, it would not be able to provide the Latest definitions to client as well.
Could you work on the steps below:
1) Login to SEPM
2) Click on Admin
3) Click on Servers
4) Highlight the Local site and then click on Download Liveupdate content.
5) Click on Download.
This would download the definitions from the Internet and update the definitions in the SEPM.
Once, the Download is completed successfully.
Click on Clients >> Right click on the Group (under which the clients are reporting to) >> Click on Run command on the Group >> Update content.
This would push all the definitions update to the clients.
If the SEPM server does not have Internet, then you could manually download the .jdb file from
http://www.symantec.com/security_response/definitions/download/detail.jsp?gid=savce
and then by following the steps provided in the Article below:
How to update definitions for Symantec Endpoint Protection Manager (SEPM) using a .jdb file
http://www.symantec.com/docs/TECH102607
To Troubleshoot the Liveupdate Issue, check this Article:
Symantec Endpoint Protection: LiveUpdate Troubleshooting Flowchart
http://www.symantec.com/docs/TECH95790
Hope that helps!!