In Firefox, I click on settings/General settings and I see the Default Browser box. It is checked , HOWEVER the whole area is slightly blurred and I cannot uncheck the box. Not that I want to, but the system has taken over and will not allow me to uncheck it. At the same time this happened, Microsoft EDGE is starting to come up at various places when another app launches my web browser. Hewlett Packard is a good example. So, I tried to completely uninstall edge, with no luck. THAT uninstall box is also slightly blurred or faded, same as the Firefox default browser is. It is like Windows 10 is trying to take over my system completely. I hope you have had experience with this since they are now messing with your controls and your settings! Please help.