Sav virus definitions not updating
However, even if an Internet connection is not available, having the signature database updated is a must.
Reputable antivirus and protection tools enclose a built-in definition updater to make sure users get the latest signatures, provided their PC is connected to the Internet.
This batch file automatically downloads and extracts the latest file from a statically named executable (Navup8.exe), and copies the file to the appropriate location.
For more information, read the document How to automatically update Symantec Anti Virus Corporate Edition 8.x definitions without using Live Update.
Scheduling Live Update You can schedule Live Update to run periodically, either from the Virus Definition Manager within the SSC, or by clicking File and then Schedule Updates from within Symantec Anti Virus.
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.