I have Win10, Norton Security. When I get Windows Defender Update it will not install because Norton Security has turned OFF Windows Defender. So the update goes 66% and quits. Is there a simple solution? Otherwise the update tries to install everyday for the rest of my life. Some say turn off Norton, turn on Windows defender and install update, then reverse the on/off and you should be good. That will be a life long pain in the neck. Any suggestions? Jm