The Live Update Administration Utility On very large or widely distributed networks, it may be desirable to create an internal server and have clients use Live Update to retrieve updates from that server, rather than using the VDTM.For information on how to determine whether the Live Update Administration Utility is necessary, and for instructions for its implementation, read the document How to configure the Live Update Administration Utility.
If you do not want to wait, you can manually initiate the update process by stopping and restarting the Symantec Anti Virus Server process.
You can update any Symantec Anti Virus server or client by downloading the file from Symantec.
You can also copy an file from the VPHOME share on any Symantec Anti Virus server.
Live Update can retrieve definitions files either from the Symantec server (which it does by default) or from an internal Web, FTP, or file server created with the Live Update Administration Utility.
To run Live Update on a primary server from the Symantec System Center Console Schedule Updates from within Symantec Anti Virus.
Usually denotes a problem with the Defwatch service on the client which is the bit that actually keeps an eye out for new defs. What happens if you try forcing the defs down via the console?