Update Norton Anti-Virus
Double-click the Norton Anti-Virus icon in the system tray by the clock.
Check the Automatic LiveUpdate status. If LiveUpdate is working properly, the date of the Virus Definitions should be the previous Thursday. If the Virus Definitions date is not the previous Thursday, click on Virus Definitions and click the Update Now button on the right.
*If Automatic LiveUpdate is off, click on Automatic LiveUpdate and click the Enable button on the right and restart your computer.
If the update does not run, download and install the update manually from the Norton Anti-Virus website.