Troubleshoot and diagnose Firefox issues

Nearly problems with Firefox tin be fixed by following the troubleshooting methods described below. Try these steps in club. If i doesn't work, motion on to the adjacent 1. If you need extra help with any of this, we have a community of volunteers continuing by.

Table of Contents

  • i i. Restart your figurer
  • 2 2. Clear your cookies and cache
  • 3 iii. Restart Firefox in Safe Mode
  • 4 iii. Restart Firefox in Troubleshoot Mode
  • five 4. Reinstall Firefox
  • vi five. Refresh Firefox
  • 7 6. Create a new Firefox contour
  • 8 Other solutions
    • 8.1 Check browser internals
    • viii.2 Bank check for conflicts with your Net security software
    • 8.three Check for malware

i. Restart your computer

Sometimes problems tin can be stock-still by simply restarting your computer and and then starting Firefox again.

2. Clear your cookies and enshroud

Many issues with loading spider web pages tin be resolved by clearing Firefox'southward cookies and cached Web content. To learn more, see Clear cookies and site data in Firefox and How to articulate the Firefox cache.

To clear cookies and cache all at once:

  1. Click on the menu push fx57menu Fx89menuButton to open the bill of fare panel. Click the Library 57 library icon button on your toolbar. (If you don't see it, click the carte fx57menu button, and then click click the menu fx89menuButton button.)
  2. Click and select .
  3. In the Time Range to clear: drop-down, select Everything.
  4. Below the drop-downward menu, select both Cookies and Cache. Brand sure other items you want to keep are non selected.
  5. Click OK.

Firefox likewise has a startup cache that stores certain temporary data, to better startup speed. Clearing the startup cache so restarting Firefox tin resolve diverse issues with the Firefox user interface (UI). This will not change your profile data or add-ons.

  1. Click the menu button Fx57Menu Fx89menuButton , click and select . The Troubleshooting Information folio will open.
  2. Under Try clearing the startup cache, click Articulate startup cache… then click Restart.

3. Restart Firefox in Safe Style

Firefox Safe Mode is a troubleshooting fashion that disables extensions, uses the default theme, turns off hardware dispatch and uses default toolbar settings, amidst other changes (see this commodity for details). To kickoff Firefox in Safety Mode:

  1. Click the menu push button Fx57menu, click , select and click Restart in the Restart Firefox in Troubleshoot Mode? dialog.

    Annotation: Y'all can besides start Firefox in Troubleshoot Mode by holding downwards the shift key while starting Firefox. holding down the pick key while starting Firefox. quitting Firefox and then going to your Terminal and running: firefox -condom-mode
    You may demand to specify the Firefox installation path (e.k. /usr/lib/firefox)

    Click the bill of fare push Fx57menu, click , select and click Restart in the Restart With Add-ons Disabled dialog.

    Notation: Yous can also beginning Firefox in Prophylactic Mode by holding downward the shift key while starting Firefox. belongings down the pick key while starting Firefox. quitting Firefox and then going to your Terminal and running: firefox -prophylactic-mode
    You may demand to specify the Firefox installation path (e.g. /usr/lib/firefox)

  2. In the next Firefox Safe Mode dialog, click Kickoff in Prophylactic Mode.
  3. Check whether your trouble is still happening while in Condom Mode.
  • If the problem still happens in Safe Mode, continue to step 4.
  • If the trouble does not happen in Condom Mode, follow these instructions to troubleshoot extensions, themes and hardware acceleration.

3. Restart Firefox in Troubleshoot Way

Firefox Troubleshoot Way is a diagnostic mode that disables extensions, uses the default theme, turns off hardware acceleration and uses default toolbar settings, among other changes (see this article for details). To kickoff Firefox in Troubleshoot Mode:

  1. Click the menu button Fx57menu, click , select and click Restart in the Restart Firefox in Troubleshoot Mode? dialog.

    Notation: You tin besides first Firefox in Troubleshoot Mode by holding down the shift key while starting Firefox. holding downwardly the option cardinal while starting Firefox. quitting Firefox and then going to your Terminal and running: firefox -safety-mode
    You may need to specify the Firefox installation path (east.yard. /usr/lib/firefox)

    Click the menu button Fx57menu, click , select and click Restart in the Restart With Add-ons Disabled dialog.

    Note: You can also start Firefox in Safe Way past belongings down the shift key while starting Firefox. property downwards the choice central while starting Firefox. quitting Firefox and then going to your Terminal and running: firefox -safety-mode
    You may need to specify the Firefox installation path (due east.g. /usr/lib/firefox)

  2. In the side by side Open Firefox in Troubleshoot Way? dialog, click Open.
  3. Check whether your problem is still happening while in Troubleshoot Mode.
  • If the trouble still happens in Troubleshoot Mode, go on to stride iv.
  • If the problem does not happen in Troubleshoot Mode, follow these instructions to troubleshoot extensions, themes and hardware acceleration.

4. Reinstall Firefox

Some Firefox bug tin can be caused by a problem with one of the Firefox program files. Follow these steps to completely remove and reinstall Firefox. This process will not remove your Firefox contour data (such as bookmarks and passwords), since that information is stored in a different location.

Annotation: You lot might want to print these steps or view them in another browser.

Now outset Firefox and check to see if your problem has been stock-still. If information technology hasn't, continue with the next troubleshooting method.

v. Refresh Firefox

The Refresh Firefox feature can ready many problems by restoring your Firefox profile to its default country while saving your essential information.

If you take many Firefox customizations, you lot may desire to skip this step and create a new Firefox profile instead (see stride vi, below) and then that your quondam contour is hands recoverable from the Profile Manager.

Annotation: When you refresh Firefox, your bookmarks, browsing history, open tabs, windows, passwords, cookies and web course car-fill data volition exist saved. Nonetheless, your extensions and themes will be removed and your preferences will be reset. Learn more.

  1. Click the carte button Fx89menuButton, click and select .
  2. Click Refresh Firefox… and so Refresh Firefox in the confirmation window that opens. Firefox will close to refresh itself.
  3. When finished, a window will listing your imported information. Click the Stop button. Firefox will open.
  4. Select whether you want Firefox to restore all or some windows and tabs and click the Let's go! push button.
  1. Click the carte button Fx57Menu, click and select .
  2. Click Refresh Firefox… then Refresh Firefox in the confirmation window that opens. Firefox will close to refresh itself.
  3. When finished, a window will listing your imported information. Click the Finish push. Firefox will open.

6. Create a new Firefox profile

Sometimes files in your Firefox profile binder that correspond to the essential information that a Firefox Refresh doesn't remove (such as bookmarks and browsing history) may be causing the event. You can create a new, additional profile which volition not contain any of your quondam Firefox data. See the Profile Manager - Create, remove or switch Firefox profiles commodity for instructions.

Other solutions

If you lot've tried all of these troubleshooting methods, and y'all're still having bug, here are some other solutions you tin can effort:

Check browser internals

The Firefox Task Manager (nigh:performance folio) lets you meet what tabs or extensions are slowing down Firefox. Telemetry Data shared with Mozilla (about:telemetry folio) contains detailed data most performance, hardware, usage and customization. The Troubleshooting Information page (about:support folio) includes other almost: page links and troubleshooting resources. (For a list of all about: pages, enter virtually:about in the accost bar.)

Check for conflicts with your Internet security software

Some Internet security software (including antivirus, antispyware, and firewall programs) can cause problems with Firefox including blocking it from opening websites, crashes, and more than. Often you lot can open the programme's settings, remove Firefox from its listing of immune or trusted programs, and it will be re-detected and things should kickoff working once more. Meet Configure firewalls so that Firefox tin access the Net.

Check for malware

Malware (brusque for "malicious software") tin can cause problems with Firefox. Periodically, you should browse your system for viruses, spyware, or other malware. For more than data, see Troubleshoot Firefox issues caused by malware.

These fine people helped write this article:

AliceWyman, Chris Ilias, Underpass, Tonnes, Michele Rodaro, Michael Verdi, scoobidiver, Andrew, Swarnava Sengupta, Safwan Rahman, Mozinet, user669794, scootergrisen, Joni, Artist, fffknol

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