how to repair firefox

Why my Firefox is not working?

This error is caused by a problem with Firefox program files. The solution is to remove the Firefox program and then reinstall Firefox. (This will not remove your passwords, bookmarks or other user data and settings which are stored in a separate profiles folder.)

How do I get Firefox back to normal?

, click Help and select Troubleshooting InformationMore Troubleshooting Information. Click Refresh Firefox… then Refresh Firefox in the confirmation window that opens. Firefox will close to refresh itself.

How do I uninstall and reinstall Firefox?

In the Control Panel window, click the Uninstall a program link under the Programs section. From the list of currently installed programs, select Mozilla Firefox. To begin the uninstall, click the Uninstall button at the top of the list. The Mozilla Firefox Uninstall window will open.

How do I reset Firefox without opening it?

Select Refresh Firefox to reset your settings and delete all add-ons....This will let you reset Firefox even if it won't open without crashing:Windows: Hold down ⇧ Shift while opening Firefox. ... Mac: Hold down ⌥ Option while opening Firefox.More items...

Why does my Firefox keep crashing?

Some of the most common include the following; The Firefox browser could be outdated and may need an update. It is also possible that the version of Windows 10 you are running is not up to dare. Mismatched cache and other conflicts of settings can cause Firefox to crash.

How do I reinstall Firefox without losing everything?

To keep your personal data intact, leave the box next to “Remove My Firefox Personal Data and Customization” unchecked when removing Firefox. Your bookmarks should automatically show up after reinstalling Firefox.

What is Mozilla maintenance service?

Mozilla has added an optional component as a Windows Service for Firefox browser, it is Mozilla Maintenance service. This service installs the Firefox updates silently on Windows systems without the intervention of the UAC dialog.

How do I reinstall Foxfire?

Microsoft WindowsOpen your Internet browser and access the Mozilla Firefox download page.Click the Download Firefox button on the page.Once the download has completed, click Run or the downloaded file itself (usually in the lower-left corner of your browser window).Follow the prompts to install Firefox.

What happens if I refresh Firefox?

Refreshing Firefox will move that information to a new profile folder dubbed 'Old Firefox Data' on the desktop. This folder is a back up of all your Firefox data, and you can either delete it or manually restore the data by copying files between the new and old profile folders.

How do I change Firefox version?

0:031:21How Can I Change My Version of Firefox? : Firefox Tips & MoreYouTubeStart of suggested clipEnd of suggested clipHi I'm Skylar let's go over changing your version of Firefox. There are two different ways you couldMoreHi I'm Skylar let's go over changing your version of Firefox. There are two different ways you could go up or down so here I am in Firefox I'm just going to search for update Firefox. Right here at

What is the current version of Firefox?

102.0.1What's the latest version of Firefox?Release EditionPlatformVersionFirefox Standard ReleaseDesktop102.0.1Firefox Extended Support ReleaseDesktop102.0.1Firefox iOSMobile102.1Firefox AndroidMobile102.0

What version of Firefox do I have?

On the menu bar, click the Firefox menu and select About Firefox. The About Firefox window will appear. The version number is listed underneath the Firefox name.

How do I uninstall latest Firefox update?

How to Uninstall Mozilla Firefox UpdatesOpen a Web browser and navigate to Mozilla FTP Server at ftp.mozilla.org/pub/mozilla.org/firefox/releases/. ... Click the folder of the version you wish to roll back to.Click the "Win32" folder from the version folder.Click the "en-US" folder.Click the "Firefox Setup.exe" file.More items...

Initial Troubleshooting Steps

Before taking any elaborate measures, try rebooting your computer. Though a stereotypical answer to almost any computer problem, a reboot can actua...

Profile Problems -- Test Your Add-ons

Buggy extensions and themes are a common cause of Firefox troubles. Even if each extension you use works independently, conflicts between extension...

Profile Problems -- Refresh Firefox

If you can't solve your problem by disabling add-ons, or the program won't even open, refresh Firefox to reset the program to a working state, dele...

Software Problems -- Update Your Plugins

Plugins, not to be confused with extensions, refer to other programs that run inside Firefox, such as Adobe Flash and Java. Visit Mozilla's plugin...

Software Problems -- Reinstall Firefox

If Firefox can't open in Safe Mode or every other method fails to solve the problem, it's time to reinstall the program. Close Firefox and in any v...

Refresh Firefox - reset add-ons and settings

A Refresh can fix many issues by restoring Firefox to its default state while saving essential information like bookmarks and passwords.

I'm having problems confirming my Firefox Account

Here are some common solutions to help you resolve issues such as missing confirmation emails and outdated or locked Firefox Account status.

Recover user data missing after Firefox update

If your bookmarks, passwords, preference settings and other data are missing, it may be available in another Firefox profile. Learn more.

Unable to play videos from streaming services in Firefox

Some videos from streaming services don't play in Firefox and Firefox ESR. This is fixed in Firefox version 88.0.1 and Firefox ESR 78.10.1

Certificate contains the same serial number as another certificate

Why Firefox may show you a Secure Connection Failed error when you try to access the configuration page for your router and what to do.

Can I use my screen reader with the new Firefox?

Users on slower computers have reported problems viewing certain web pages with some screen readers in Firefox 57 and above. Learn more.

File system paths on Linux are always treated as UTF-8

On Linux, the profile path is required to be valid UTF-8. Names of downloaded files are encoded in UTF-8 regardless of glibc and glib settings.

How to refresh Firefox?

To refresh, visit the address "about:support" in Firefox and press "Refresh Firefox.". If the browser won't open at all, hold "Shift" while launching Firefox, but instead of selecting to start in Safe Mode, press "Refresh Firefox" instead. Advertisement.

How to save time on add-ons?

To save time, disable half of the add-ons at once. If the problem remains, disable the other half instead. Re-enable a few at a time until the problem occurs, indicating the culprit, which you can then remove or research for a specific solution. Advertisement.

What is a plugin in Firefox?

Plugins, not to be confused with extensions, refer to other programs that run inside Firefox, such as Adobe Flash and Java. Visit Mozilla's plugin status page to see if any of your plugins need updating. If so, update them to potentially solve the problem.

What is refresh Firefox?

The Refresh Firefox feature can fix many issues by restoring Firefox to its default state while saving your essential information. Consider using it before going through a lengthy troubleshooting process.

Can't open websites after upgrading Firefox?

If you just upgraded Firefox and it can no longer open any websites but other browsers or programs can, see the Fix problems connecting to websites after updating Firefox article. If no programs can open websites, see the aptly named Firefox and other browsers can't load websites article.

How to troubleshoot time related errors on secure websites

Learn why you might see time-related errors on HTTPS websites and how you can troubleshoot these errors by correcting your system clock.

How to troubleshoot security error codes on secure websites

Learn about the error codes SEC_ERROR_UNKNOWN_ISSUER MOZILLA_PKIX_ERROR_MITM_DETECTED and ERROR_SELF_SIGNED_CERT on HTTPS websites and how to troubleshoot.

Refresh Firefox - reset add-ons and settings

A Refresh can fix many issues by restoring Firefox to its default state while saving essential information like bookmarks and passwords.

Website will not allow Firefox to display the page if another site has embedded it

This page explains the error: "Website will not allow Firefox to display the page if another site has embedded it"

Use the Troubleshooting Information page to help fix Firefox issues

The Troubleshooting Information page has tools and details about your Firefox installation, that can help you solve problems with Firefox.

How to reset the default user agent on Firefox

Learn how to reset your Firefox "user agent" so that websites can detect your correct browser and version and work the way they should.

Certificate Pinning Reports

Firefox certificate pinning reports; what they are and why you might want to share yours.

How to run Firefox as administrator?

You can either reboot the computer or, if you have an administrator account, you can execute the program as an administrator. Find the firefox.exe program file in the Firefox application folder on your system. Right-click the icon. Select Run As…. Select Run As Administrator….

How to refresh Firefox?

The Firefox Safe Mode window includes a Refresh Firefox option. You can 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.

What to do if Firefox doesn't open?

If you click the Firefox icon but no Firefox window opens and no error message is shown, a simple first step is to restart your computer and then try again. If Firefox still does not start, see the following sections.

Why won't Firefox start?

Firefox will not start because of missing libraries. If you installed Firefox outside of your package manager, make sure that your system has the libraries listed in the system requirements . Based on information from Browser will not start up (mozillaZine KB) Share this article: http://mzl.la/1xKrNIw.

Does Firefox start after installing add-ons?

Firefox will not start after installing add-ons. If Firefox previously worked but stopped after you installed extensions or themes, see Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems .

Refresh Firefox to repair issues

Step 1: Open the Firefox browser. On the new tab page, type about:support and then press Enter key to open Troubleshooting Information page.

Refresh Firefox using the safe mode option

Step 1: In the Firefox browser window, click the menu icon (refer to the picture below), click Help, and then click Restart with Add-ons Disabled option.

How to start Firefox in troubleshoot mode?

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.

How to open a library in Firefox?

Click the Finder icon in the dock. On the menu bar, click the Go menu, hold down the option or alt key and select Library. A window will open containing your Library folder. Then open the "Application Support" folder, the "Firefox" folder, the "Crash Reports" folder and finally the "submitted" folder.

How to start Firefox in safe mode?

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.

How to execute Firefox as admin?

Here are the steps on how to do it: Step 01 - Locate the executable file, Firefox. Ece, within the application folder of Firefox on your computer. Step 02 - Right-click the icon for Firefox (the executable file).

Why won't my bookmarks be deleted?

It is important to note that your bookmarks, passwords, and user settings (and data) won’t be deleted because they are in another separate folder for profiles. Here are the steps on how to fix this problem: Step 01 - Uninstall Firefox by visiting Control Panel > Uninstall A Program.

What to do if Firefox doesn't open?

After this, you should try opening the browser again. When Firefox still doesn’t open, then you can try the following solutions:

How to close all processes in Firefox?

Here are the steps on how to do it: Step 01 - Press “Ctrl” + “Shift” + “Escape.”. The Windows Task Manager will be opened. Step 02 - Select the tab for Processes.

Does ZoneAlarm work after Firefox update?

It typically happens after Firefox is updated. This is true, especially when the tool has a feature called Virtual Browsing. Usually, this is present in some ZoneAlarm versions. The feature is also available in other types of Internet security tools.