This issue is caused by a problem with the profiles.ini file or with permissions/ownership of involved folders/files. You can use one of these to make Firefox create a new default profile or recover an existing profile. Index of /pub/firefox/releases/84.0.1/ Type Name Size Last Modified; Dir. Dir: jsshell/ Dir: linux-i686/ Dir: linux-x8664/ Dir. Complete the Uninstallation Process by Deleting Firefox-Related Files. Moving Firefox to the Trash folder effectively uninstalls it from your Mac. However, as with the uninstallation of other apps, you may find that certain Firefox-related files remain saved to your Mac even after you trash Firefox itself. Firefox is the most popular open source web browser with a tabbed interface and support for all the latest web technologies. Newer versions come with Firefox Hello that allows you to have a video or voice conversation using the browser itself.

This article is for IT Admins who want to configure Firefox on their organization's computers.

To deploy Firefox customizations on macOS:

Download Firefox and then open the disk image.
Drag the Firefox application onto your desktop or some other location so that you can modify it.

Before you modify any files in the Firefox application, you must remove the quarantine that macOS sets by default for applications downloaded from the Internet. To do this, run the following command from a Terminal:

If you see an error on startup that says:

Firefox is damaged and can’t be opened. You should move it to the Trash.

This means that you did not run this command.

Deploy customizations made with policies.json

If you want to deploy customizations that were made with policies.json, create a directory called distribution in the Contents/Resources directory and place the policies.json file into that directory.

Deploy customizations made with Autoconfig

If you want to deploy customizations that were made with AutoConfig, place the autoconfig.js file into the Contents/Resources/defaults/pref directory and the firefox.cfg file into the Contents/Resources directory.

Once you have made the changes that you need, you can deploy the customized Firefox.app file.

Firefox continues to impress reviewers and experts, who point out the browsers' efficiency, attention to detail, and impressive privacy options. That said, Firefox, just like every other browser, can experience a range of issues, from slow browsing all the way to regular crashes and everything in between.

Today we want to highlight the most common Firefox problems and provide you with simple fixes that anyone can use to get Firefox back to its best.

Firefox Slow & Freezes

A fox should not be slow, and fire should not freeze. So when Firefox is lagging and hanging, frustration sets in pretty quickly. Force quit is the go-to move, but that is a temporary relief that won’t solve an underlying Firefox issue.

Before we get to some specific solutions, make sure you’ve followed these basic principles:

Close unnecessary tabs and windows – Because each one, even if not being used, will take up system resources and slow your Mac down. Bookmark what you don’t need to come back to later.

Update Firefox – Updates contain bug fixes and performance improvements.

Recognize your Mac is getting old – Have you had your Mac for several years? Is everything slow, not just Firefox? Sometimes you have to acknowledge when age has caught up with it.

Now it’s time to go over some specific solutions to help Firefox problems on Mac. These will help even if your Mac is an old-timer.

Clean up Firefox (and your macOS)

If Firefox keeps freezing or is just generally sluggish, it could be the result of a browser that has too much history, cache, and other “temporary” files clinging to the ankles of your once mighty Fox. Luckily, getting rid of this extra burden is simple. Even if it doesn’t completely fix your browser speed, it will still be great for your system.

To manually clear your search history, Firefox caches and other unneeded browser files:

Navigate to History > Clear Recent History
Click on Details to reveal the full list
Check what you want to remove
Make sure “Time range” is set to Everything
Click Clear Now

Another way to speed up Firefox along and your macOS, in general, is to use CleanMyMac X. In a couple of quick clicks the app will find and, with your approval, remove unneeded system files from all over your macOS - including your Firefox cache and browser history.

To clean up Firefox caches, and other browser junk the easy way:

Download CleanMyMac X for free and run it
Select System Junk tab
Click Scan
Click Clean

Firefox Crashing

Firefox For Mac Download Free

Foxes are elegant and agile creatures, which is to say that when there is an obstacle, they should evade it smoothly, not crash into the thing.

When Firefox doesn’t load or crashes, this makes us incredibly sad. Thankfully, we have some solutions to get Firefox back on its feet.

Identify problematic Firefox add-ons

In a terrible murder mystery, the cliché is that “the butler did it.” Well, when Firefox is crashing regularly, it’s tempting to say “the add-on did it.”

Plugins and extensions add so much to our browser experience, but they are also a common cause of problems. To start with, make sure each extension and plugin is up-to-date. Firefox even has an official plugin checker.

If everything checks out but Firefox keeps crashing, we recommend running it in Safe Mode. This will load Firefox without any add-ons.

To start Firefox in Safe Mode:

Click the Firefox menu button
Click Help
Select Restart with Add-ons Disabled

You can also launch Firefox while holding the Shift key to start in Safe Mode.

If the crashes go away in Firefox Safe Mode, then you know the butler add-on did it.

So we know that an add-on is causing the crashes, now what?

You should disable all your ad-ons and turn them back on one at a time. This way you can methodically find the guilty add-on.

To manage your Firefox add-ons follow these steps:

Click the Firefox menu button
Select Add-ons > Extensions or Appearance
Disable or enable as you like
Restart Firefox

Firefox crashes on startup

Uh-oh. Firefox won’t even start?

Don’t worry; it may seem like “the worst thing that could have ever happened to anyone” but the solution is often easier than you’d expect. Begin by holding the Shift key when launching Firefox to start in Safe Mode.

How to format usb for mac and windows. If this works then chances are you have a dodgy extension. Follow the steps from Identify problematic Firefox add-ons.

However, if Safe Mode isn’t working either, you’re going to have to uninstall and reinstall Firefox.

To manually reinstall Firefox:

Make sure the application is closed
Drag the application to your Trash
Empty your Trash
Download the latest version of Firefox for Mac
Install Firefox

This will repair Firefox will keeping your profile including bookmarks and settings.

An easier and safer option is to use CleanMyMac’s Uninstaller to repair Firefox with a reset:

Launch CleanMyMac and click on Uninstaller
Click on Mozilla Firefox
Click on a small arrow next to Firefox icon
Click Application Reset

Firefox not loading pages

You had one job, Firefox!

When web pages don’t open, it’s more than a little annoying, considering that’s the main task of a browser. But let’s not jump to conclusions, maybe Firefox isn’t to blame.

The first step is to open a new tab and try other sites. If they aren’t loading either, the second step would be to try another browser like Safari and see if the web pages load there.

If they do then the problem is with Firefox.

Let’s Firefix it!

Proxy problems

If you’re using a proxy server to browse the web, it could be the problem that’s stopping Firefox from loading pages. It’s easy to check, simply follow these steps:

Click on the Firefox menu
Navigate to Options > Advanced > Network
Click on Settings under Connection
Select No Proxy
Close options and reload web pages

Clear cookies and cache

In Clean up Firefox

Firefox For Mac 35fasrsun