The Symantec Intelligent Updater requires no user feedback, as you just have to launch it and wait for the definitions to be installed.Any available Symantec program is automatically recognized and a log file is created to store information about the definition update.Errors can occur preventing Live Update from distributing current definitions to Symantec antivirus.The most common failures occur due to Internet connectivity issues, management server communication errors and corrupt virus definitions.Live Update first shipped in the 1997 version of Norton Anti Virus 2.0 and soon followed in other products.
In Interactive mode, users decide which updates to download and apply.
Live Update can only apply updates for a particular version of Norton; it cannot however upgrade a version of Norton to a later version (for example Norton Internet Security 2006 to 2009).
To upgrade the product to the latest version, one would have to go to a separate website.
But when you are going to update Norton Antivirus then you are facing Norton live update problem and Norton live update not working.
The first thing that will come in your mind is to contact Norton Support to get the things resolved.