Liveupdate not updating client defs
The LU1825 error code signifies the Symantec client has corrupt virus definitions, preventing Live Update from updating.
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 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.
Live Update first shipped in the 1997 version of Norton Anti Virus 2.0 and soon followed in other products.