Start firefox in safe mode

How to Start Firefox in Safe Mode?

In the current version of Firefox, the “Safe Mode” menu item has been replaced by “Restart with Add-on Disable”. It still receives the same “safe mode” effect if you are experiencing a bug or problem when you open Safe Mode disappears, then the problem is probably due to your addon.

Start Firefox in Safe Mode Using Firefox Menu

  1. Open Mozilla Firefox This method shows two ways to restart Firefox in “safe mode”, with disabling all your add-ons.Start firefox in safe mode
  2. Click on the menu icon This icon looks like three horizontal grey bars, it is located on the right-hand side of your screen, as your address bar (URL) on the same tab. When you click it, you should open a small menu. [1]
    Alternatively, disable the add-on in the top menu, click on Help → Restart, and go to “Continue in safe mode”.Start firefox in safe mode
  3. Open Help Click the small, fourth question mark icon at the bottom of the menu that you just opened. This will open the help menu when you click on the question mark, a list of options should be visible.Start firefox in safe mode
  4. Disable click with Add-on Disabled Select Add Restart with Add-on Disabled Firefox will immediately close and reopen. After using Firefox, take a screenshot or bookmark this page to continue using these instructions.
  5. Click Continue in the safe mode. When Firefox restarts, a pop-up should appear. To enter safe mode, click continue in safe mode.
  6. Disable add-ons one by one if the Safe Mode fixes your problem, then possibly due to the add-on, turn off Firefox and open it normally again. Use the top menu to access the tool → Add-on, and disable the add-on that you think might cause problems. Continue restarting Firefox and disable individual add-ons unless the bug is isolated.
  7. Reset Firefox completely if nothing works If the safe mode does not fix your problem, then you can remove Firefox’s default status and delete all your favourite preferences, bookmarks, passwords and add-ons. Repeat the steps above to restart Firefox in safe mode. This time, instead of “Continue in safe mode”, press Reset Firefox.
    If you see a list of checkboxes instead, you are using Firefox version 14 or below. You can see all these boxes for a similar effect in 2nd option, but updating the latest Firefox can be an easy way to fix some bugs.
    If you see only the “Continue in safe mode” option, then try switching to the default profile and try again 3rd option.
    Your data will be saved in a new folder called “old firefox data” If you are creating a new Firefox profile, you can move harmless data over option (4).

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Solutions For Mozilla Firefox Support

Restart your computer

Sometimes problems can be fixed by simply restarting your computer and then starting Firefox again.

Clear your cookies and cache

Many problems with loading web pages can be resolved by clearing Firefox’s cookies and cache:

  1. Click the Library button, click History and select Clear Recent History….
  2. In the Time Range to clear: drop-down, select Everything.
  3. Click the arrow next to Details to display the list of items that can be cleared.
  4. Select both Cookies and Cache.
  5. Click Clear Now.

Restart Firefox in Safe Mode

Firefox Safe Mode is a troubleshooting mode that disables all extensions, uses the default theme, turns off hardware acceleration, and uses default toolbar settings and controls, among other things. To start Firefox in Safe Mode:

  1. Click the menu button, click Help and select Restart with Add-ons Disabled…. Firefox will start up with the Firefox Safe Mode dialogue.
  2. In the Firefox Safe Mode dialogue, click Start in Safe Mode.
  3. Check whether your problem is still happening while in Safe Mode.
  • If the problem still happens in Safe Mode, go on to step 4.
  • If the problem does not happen in Safe Mode, see the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article and follow the instructions under The problem does not occur in Safe Mode to narrow down the cause.

Reinstall Firefox

Some Firefox issues 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 profile data (such as bookmarks and passwords), since that information is stored in a different location.

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

  1. Download the latest official version of Firefox from org.
  2. Exit Firefox:

Click the Firefox menu, then click Exit.

  1. Uninstall Firefox from your computer.
  2. Delete the Firefox program folder, which is located in one of these locations by default:
    • C:\Program Files\Mozilla Firefox
    • C:\Program Files (x86)\Mozilla Firefox
  3. Reinstall Firefox – see How to download and install Firefox on Windows for instructions.

Now start Firefox and check to see if your problem has been fixed. If it hasn’t, continue with the next troubleshooting method.

Refresh Firefox

The Refresh Firefox feature can fix many issues by restoring your Firefox profile to its default state while saving your essential information.

  1. Click this Refresh Firefox button directly, if you are viewing this page in Firefox.
    This won’t work if you are using a different browser or on a mobile device.

    • You can also find a Refresh Firefox button at the top of the Firefox about: support Troubleshooting Information
  2. To continue, click Refresh Firefox in the confirmation window that opens.
  3. Firefox will close to refresh itself. When finished, a window will list your imported information. Click Finish and Firefox will open.

Need Help? Call +1-855-969-1880 for firefox support.