Installation Process

Installed Norton Security (did not use automatic renewal due to cost) which I assume replaced Norton 360. Norton Security installation went ok. Question I have now is: when I log on to "Manage My Protection", under "Devices", I note that under Installed Services, I have Norton Security with 1 year protection which is correct. Under Installed Services, it also shows Norton 360 expired. I've tried to remove Norton 360, but I get the message "Uninstall Failed". I'm assuming I should uninstall Norton 360? How do I uninstall Norton 360?