Mozilla Firefox does not open on Windows 11 – EASY FIX

EASY FIX for Mozilla Firefox not opening on Windows 11

Firefox is the second most popular browser on the market, but it can sometimes create problems. One such problem is when Firefox won't open. There are 2 cases for this condition. In the first case, Firefox will not open but will run in the background. In the second case, the application will not open in the background either. This could be caused by missing or corrupt Firefox files, problematic add-ons, corrupted user profile, or a problem with certain drivers.

Issues covered in this tutorial:
Firefox does not open Windows 11
Firefox does not open any Windows 11 websites
Firefox does not open Windows 11 in full screen
Firefox doesn't open anything Windows 11
Firefox PDF files not opening in Windows 11 browser
Firefox browser does not open Windows 11
Firefox does not open in full screen Windows 11
Firefox won't open on Windows 11
Mozilla Firefox does not open Windows 11
Mozilla Firefox does not open Windows 11
Firefox does not open a new Windows 11 window
Firefox does not open Windows 11 pop-up

The case of Firefox running in the background occurs when you try to close a Firefox session, but it doesn't actually close.

This tutorial will apply to computers, laptops, desktops and tablets running Windows 11 operating system (Home, Pro, Enterprise, Education) from all supported hardware manufacturers, such as Dell, HP, Acer , Asus, Toshiba, Lenovo and Samsung.