Firefox will not start normally with a double-click or Right-click/Open but a right-click and Run as Administrator opens a window but a blank white browser. Uninstall, reinstalled and still get the same results. Tried getting to Firefox Settings when running as Administrator. Can get the menu to come up but clicking on Settings exits the menu but produces no results. Clickin on Add-ons and themes does the same thing but other options in the menu I can get to the About Firefox screen though.

Cannot access anything. Having to use Edge to send this support request.