01-05-2021

Restart Firefox



In the pop-up window. Follow through the remaining screens and when prompted, restart your computer. After you restart your computer, the uninstall tool. Note: In older versions of Firefox print.printprinter was the preference name. The old preference name may exist along with the new name. That old preference can be removed by clicking the Delete button. Restart Firefox and print a page after performing the reset. That preference won't reappear. The newer preference will only be available.

  1. How Do You Restart Firefox
  2. Restart Firefox Menu
Please update your version of Firefox for the latest features and security updates.

How Do You Restart Firefox

Troubleshoot ModeSafe Mode is a special Firefox mode that can be used to diagnose and fix problems. When you start Firefox in Troubleshoot ModeSafe Mode, it temporarily disables add-ons (extensions and themes), turns off hardware acceleration and certain other features, and ignores some customizations (see below to learn more). Comparing Firefox's behavior in normal mode to its behavior in Troubleshoot ModeSafe Mode may help pinpoint the cause of the problem.

Restart Firefox Menu

Note: Windows users may be familiar with the Safe Mode for Windows. Firefox Safe Mode has no connection to Windows Safe Mode.
Firefox Safe Mode is now known as Troubleshoot Mode in Firefox version 88 and above.

Table of Contents

  • 3Diagnosing problems in Troubleshoot ModeSafe Mode
Click the menu button , click Help, select Troubleshoot Mode… and click in the Restart Firefox in Troubleshoot Mode? dialog. Firefox
Note: You can also start Firefox in Troubleshoot Mode by holding down the shift key while starting Firefox.holding down the option key while starting Firefox.quitting Firefox and then going to your Terminal and running: firefox -safe-mode
You may need to specify the Firefox installation path (e.g. /usr/lib/firefox)
Click the menu button , click Help, select RestartRestart With Add-ons Disabled… and click in the Restart With Add-ons Disabled dialog.
Note: You can also start Firefox in Safe Mode by holding down the shift key while starting Firefox.holding down the option key while starting Firefox.quitting Firefox and then going to your Terminal and running: firefox -safe-mode
You may need to specify the Firefox installation path (e.g. /usr/lib/firefox)
Restart firefox addon

You will have two options:

  • Clicking the button will start Firefox with the default theme, your extensions will be disabled, and some other features and customizations will be turned off. These changes are temporary. When you leave Troubleshoot ModeSafe Mode and start Firefox normally, your add-ons and other settings will return to the state they were in before you entered Troubleshoot ModeSafe Mode.
  • Clicking the button will restore Firefox to its factory default state while saving your essential information. These changes are permanent. See Refresh Firefox - reset add-ons and settings for more information, before you choose this option.

After you start Firefox in Troubleshoot ModeSafe Mode, you'll want to test its behavior and see if the problem goes away.

The problem happens in Troubleshoot ModeSafe Mode

If the problem still happens in Troubleshoot ModeSafe Mode, it is not being caused by an extension or theme. Other possible causes include changes made to Firefox preference settings, which are not disabled in Troubleshoot ModeSafe Mode. See the following articles for solutions:

The problem does not happen in Troubleshoot ModeSafe Mode

If the problem does not happen in Troubleshoot ModeSafe Mode, the most likely cause is an extension, theme or hardware acceleration. See this article for solutions:

  1. Click the Firefox menu and select Exit.Click the Firefox menu at the top of the screen and select Quit Firefox.Click the Firefox menu and select Quit.
  2. Start Firefox as you normally would.
    • If Firefox keeps starting in Troubleshoot ModeSafe Mode, see Firefox is stuck in Troubleshoot Mode.

In addition to disabling add-ons (extensions and themes) and turning off hardware acceleration, Firefox Troubleshoot ModeSafe Mode disables Enhanced Tracking Protection and Safe Browsing features. Firefox Troubleshoot ModeSafe Mode also disables the JavaScript Just-in-time (JIT) compiler and ignores the optional userContent.css and userChrome.css files (if present). The xulstore.json file, which saves customizations to window sizes, toolbar settings and controls, is also ignored; however, any changes stored in modified preferences remain in effect.


Based on information from Safe mode (mozillaZine KB)

I want something similar to “chrome://restart”, without setting “open previous tabs when started” because I restart not very often (typically to recover from some issues). I have read several previous questions about restarting Firefox, such as this one: https://support.mozilla.org/en-US/questions/952456https://support.mozilla.org/en-US/questions/1089103https://support.mozilla.org/en-US/questions/1184755 . The GCLI was the perfect solution, but it is retiring in Firefox 62. Is there an alternative solution?