I have a box of Norton Antivirus 2012 (3pc) not opened, how to upgrade to a new version i need a new serial number or i can use the same with the new version from internet. Thanks for any help.
I would check with Norton Chat and 1st have them verify the key is still good.(it should be) and then ask about what product it can be used. Then download the product and use the key.
IF you currently have an "active" subscription you can use this method.
I agree with PhoneMan and check with Norton Support to see if a 5 year old key is still good. You also have to decide if you want to stay with just Antivirus or move on to a different product. If that key is still good, then you can only use it for the Antivius program. What is the operating system of your computer?