Norton AntiVirus 2009 Definitions Update (Windows XP 64-bit/Vista 64-bit) 10/13/2008
License:
Free
Requirements:
Windows XP 64-bit/Vista 64-bit.
Publisher's description of Norton AntiVirus 2009 Definitions Update (Windows XP 64-bit/Vista 64-bit)
Download this file for the latest in virus detection and repair. This definitions update is a complete replacement for any previous virus definitions set and will work with the following Symantec products:

* Norton AntiVirus 2008 for Windows XP/Vista for 64-bit OS only
* Norton Internet Security 2008 for Windows XP/Vista for 64-bit OS only
* Symantec Endpoint Protection 11.0 for 64-bit OS only.