Win10 desktop boot up forces select firefox as default and settings default apps

Win10 desktop: Boot-up forces selecting Firefox as default, then goes to default apps screen. Selections are correct. No save function (thought they auto-saved) . Then have two Firefox icons on taskbar: first is far left (normal) select and calendar & email launch. The second Firefox icon is far right on taskbar: Select and the system repeats the select browser & default apps Shown in the first line above.