The safest way would be to download AVG and save it on your hard disk, then disconnect from the internet while you uninstall Norton, reboot, and then install AVG.
After installing AVG, reconnect, and update.
I want to switch from Norton to AVG. I know I am not to run 2 anti-virus programs simultaneously or run without protection. Do I uninstall Norton and then Download AVG? Am I likely to get a virus during this process? Should I wait till my Norton subscription expires and then download AVG and would I still have to uninstall Norton? Is this a prudent move to avoid the yearly fees ($19.95) that I have been paying now for several years to Norton? Norton has protected me from viruses. Thanks much.