How do I set Firefox as my default web browser?
Open up Firefox and go to the top of the screen and click on the menu called Tools, then click on Options > Advanced > General. And go right down to the bottom to find under System Defaults, the following: “Always check to see if Firefox is the default browser on startup”. On one side there will be a little box you can tick if you wish to perform this check every time. And on the other side will be a button called Check Now. Click it. A little window will pop up offering to make Firefox your default browser. And that’s it!