I followed the instructions and can't do full screen to quit.

I clicked on the button menu, then on the button fullscreen. He gave me a full screen. Then I clicked the menu button and clicked the button fullscreen. The top bar is returned to the normal size and then disappeared leaving me with a full screen. How to get back to normal?

Hello

The keyboard shortcut for the fullscreen is F11. If the key is stuck?

Try Firefox Safe mode to see if the problem goes away. Firefox Safe mode is a troubleshooting mode that disables certain parameters, disables most Add-ons (extensions and themes).

If Firefox is open, you can restart Firefox Safe mode in the Help menu:

  • Click the menu button

    click Help

    then select restart with disabled modules.

If Firefox is not running, you can start Firefox in Mode safe mode as follows:

  • On Mac: Hold the option key during the startup of Firefox.

When the Firefox Safe Mode window appears, select "start mode safe."

If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, and you need to understand that one. Please follow the section Troubleshooting extensions, themes and problems of hardware acceleration to resolve common Firefox problems to find the cause.

To exit safe mode of Firefox, simply close Firefox and wait a few seconds before you open Firefox for normal use again.

When find you what is causing your problems, please let us know. This might help others with the same problem.

Tags: Firefox

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