Control Compliance Suite (CCS) v12, has changed how Live Update works. You need additional information how to run LU in CCS 12.
Or it is failing to run, and need to know where to look at why it is failing.
To run LU you will need to find the system job "Download Live Updates" and run this to download updates.
This job can be scheduled to run on a regular bases if needed.
If you find that the job is failing, look at the messages tab of the job. Or you can look at the log files.
Which can be found under C:\ProgramData\Symantec.CSM\Logs\ApplicationServer\
Look for the lux.log and Symantec.LUDownload<datetime>
Also look at the log files located in C:\ProgramData\Symantec.CSM\Logs\Liveupdate\
Most common cause is lack of Internet access from the Application Server, and you will need to configure a proxy server.
At this time only anonymous access is supported for connecting to a proxy, authenticated session are not supported but an enhancement request is currently open to add in this functionality.
Proxy server can be configured by navigating to "<Installdir>
An example of setting up a proxy server.