Dear all,

We have Symantec End Point Protection server 12.1.4013.4013.Cannot update some client SEP from 1 month. Before 6 February everything was ok. These users connected by fiber data connectivity through cisco router. What can I do now?

How many clients are same problem?

These clients are reflecting online on server and from client it showing green dot?

Make sure the disk space is not low on clients

Try to clean the defintion and check

How to clear out definitions for a Symantec Endpoint Protection 12.1 client manually

Does SEP client showing online ?

Symantec Endpoint Protection: Troubleshooting Client/Server Connectivity

Enable sylink debugging on the client

How to enable Sylink debugging for the Symantec Endpoint Protection 11.x and 12.1 client in the Windows Registry

These clients are direct connect or from Gup?

clients showing online on Manager

restart the client service or repair it from add/remove.

Hi,

Thank you for posting in Symantec community.

These users connected by fiber data connectivity through cisco router. Clients have been connected to the SEPM through WAN link? NAT is being used in this case? have you done any changes in the network after 6th February?

Can those clients connect directly to the Internet?

Are you able to ping SEPM machine? Can telnet port 8014?