The newer versions of Norton Antivirus enable you to have the program download and install the virus definitions automatically so you don’t have to remember to do it.
But if you need to install the updates on multiple computers, a computer without an internet connection or a slow internet connection you can download the update file and put it on a CD or other removable media. This way you will not need to download it on every computer.
You can go to the following link to download the update file. http://securityresponse.symantec.com/avcenter/defs.download.html
From here all you need to do is select your version of Norton Antivirus and click on the Download Updates button. It will then take you to a page where you can click the link to download the appropriate file. The Norton Antivirus update is an executable file that you simply double click and let it do the rest. It will display a conformation message when it completes successfully.
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