Sony VGN-AR870NA - Manual (Page 153)

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Troubleshooting
How do I keep my antivirus software updated?
You can keep the Symantec-Norton Application software program current with the latest updates from Symantec
Corporation.
To download and install the latest security update
For Norton Internet Security
1 Click Start, All Programs, Norton, and Norton.
2 Click Run LiveUpdate under Quick Tasks on the left pane.
3 Follow the on-screen instructions to select and download updates.
For Norton 360
1 Click Start, All Programs, and Norton.
2 Click the item to update the software.
3 Follow the on-screen instructions to select and download updates.
!
Your computer must be connected to the Internet before you can receive updates.