Firefox Freezing Mac

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Mar 22, 2020 Mozilla Firefox has been around for a long time giving us reliable browser services. However, like most browsers, there comes a time when Firefox becomes unresponsive and keeps freezing until the user cannot do anything but to wait or close it. There are plenty of reasons why Firefox keeps on freezing. Why Does Mac Keeps Freezing or has been Frozen? Even though macOS is highly efficient, it might.

Make your Mac fast and secure with CleanMyMac X.

A frozen or unresponsive Mac is rare, but Macs aren't immune from some of the same weaknesses as other computers. At one time or another, we've all had documents disappear, programs crash and faced that spinning beachball of dread during a busy working day.

The best thing you can do is not panic, then follow some simple instructions to get up and running again. If you are finding this is happening more often, maybe it's time to look at long-term solutions. Maybe you've not updated your operating system recently? If that is the case, then you should note a new one comes out soon. With macOS Big Sur offering lots of benefits, now is the time to give your Mac an update.

Stop Your Mac From Freezing

A powerful tools to speed up your Mac and fix keeps freezing issues.

At the same time, you may need to declutter the Mac, removing old files and long-forgotten documents to avoid troublesome Mac freezes.

Why does Mac keep freezing?

Macs are fairly powerful, durable devices. It takes a lot to slow them down, or a simple issue of the Mac running too many programs, apps and browser tabs (all of then use processing power). Like with any computer, when too much is stored and too many apps are fighting for CPU processing power, you're stuck with a spinning wheel and your beloved Mac not responding to clicks and pleas.

Apps crashing are some of the most common reasons behind a Mac freezing. Usually, an app freezing won't crash the whole Mac, but that is a risk when your memory is full, or there are lots of applications running at once.

Here are some of the main reasons Macs freeze most of the time.

Main reasons your Mac is frozen

  • Too many apps running (this affects memory and cpu)
  • Too many background processes (same)
  • App crashed (there's a problem with a single app)
  • Sluggish browser (too many tabs open)
  • Overworked email client (too many attachments)
  • macOS loaded with system junk or needs an update
  • Not enough free hard drive space
  • Hardware problem with your disk or RAM (diagnostics required)
  • Malware (the ones that cause Macs to open multiple windows or draft emails, thus overloading the system)

How to fix a frozen macOS

Let's start with a bit of obvious advice: don't panic, don't do anything you'll regret, don't push every button. In this part we'll go over unfreezing a Mac and preventing issues in the future. Depending on your current trouble, we'll try to determine the core reason and what to do in each case.

First aid: How to unfreeze a Mac

First, you need to bring your Mac back to life. When it's unresponsive - either as a result of an app or the computer is struggle to function — you can either click Restart, from the main menu, or press Command-Control-Power (Eject for keyboards and iMacs) to get it to restart.

If neither of those solutions works, then you can hold the power button down which will restart the device. Not an ideal solution, since you can lose anything unsaved, but at least that should restore it to normal.

How to retrieve lost data after the freeze

What if you resurrected your Mac and realized some of the files are missing? Don't worry just yet, install Disk Drill, the world's premier data recovery software for macOS. It was created for the cases when Mac crashed and you lost data and when you accidentally deleted files. Disk Drill is powerful enough to retrieve long-lost, mistakenly deleted files from Macs, external hard drives and USB drives and camera cards. Simply open the app and scan the chosen drive or partition, preview to find exact files you want to restore and restore them.

Now, let's make sure your Mac doesn't make a freeze into a habit.

Firefox Freezing Macbook

Most common Mac slow and freeze reasons and fixes

Unresponsive because of a specific app

Apps may running in the background, freeze and crash. Try to determine which apps cause the crash. You start at this: when does the crash happen? If it's when you turn on or work in a specific app, maybe you need to either reset it or remove it entirely.

FIX: To remove apps or set them to back default, use a Mac optimizer app called CleanMyMac, it's has a specific Uninstaller module which can safely perform the task. CleanMyMac is available on Setapp collection and you can use it for free during the trial period.

How to uninstall apps with CleanMyMac:

  1. Find CleanMyMac in Setapp and launch it.
  2. Find Uninstaller tab.
  3. Find the app in question.
  4. Checkmark it and click Uninstall.

To reset an app, repeat the first three items and then right-click on the arrow near the app name and select Application Reset instead. Resetting an app to default settings and cleaning up its cache can help if you're sure you really need the app and you can't afford to simply remove it.

Also, don't forget to check for app's updates, there's a change your problems sprout from an outdated version.

How to force quit a frozen or unresponsive app

When an app freezes, which becomes obvious when an application is unresponsive in the middle of something, or you are shown the spinning beachball of despair, you can Force Quit (either in the app, from the dock or main menu).

Freeze because of a cluttered desktop

A cluttered desktop can seriously slow down your Mac, and can also cause many problems. That is because every icon on your desktop is an image, not just a link, and it's redrawn each time you start your Mac.

FIX: To clean up your desktop, and organize icons and files, try to use Spotless app. Simply drag your files onto the Spotless pop-ep drawer in your Menu bar and instantly create a rule to organize them in their own folder or place them to Trash. You can automate tidying up with Spotless rules so that all your new files at the end of the day or week get placed into their designated folders.

Freeze because of crushing background apps

This is usually when an app has been running without you realizing it. If your Mac freezes on startup than it's probably one of the startup items, apps that launch when your Mac turns on. You'll need to check on them and remove the extras.

FIX: Stop programs from running at startup on Mac: go to Settings > Users and Groups > Login items and uncheck any app that you don't want to launch when switching your Mac on, or restarting it. This way you'll escape weird crashes that render your Mac frozen.

Freeze because too many apps are running at once

How many are too many? Unfortunately, there is no simple answer; but once your Mac seems to struggle running simple tasks, or slows down when you've got multiple tabs or apps open, it's an indication that it is struggling to cope.

FIX: How to check what apps are running on your Mac right now? Open Activity monitor and take a look at the list of apps. Next to each you can see how much RAM and CPU power they eat up. You can switch between CPU and memory tabs to view each. Those that are the heaviest could cause the problem, so if you're sure you know what that app is, you can quit it.

How to close multiple applications on a Mac: in the Activity monitor, simply select and press the X mark in the top left corner. This will force quit the app. Resort to this only if your app is entirely unresponsive, otherwise use the menu in the top bar with the app's name, next to the apple icon. For instance Chrome > Quit Google Chrome.

In the same way you can manage processes on Mac. Rows without icons are processes. There are system ones and user-generated processes. Don't rush to quit any process before reading a little about it on Google. It might be important.

Freeze because there's no space on hard drive

An overloaded drive can be the reason your Mac fails to work properly and freezes or nearly-freezes. You can check if it's the problem by clicking the Apple icon > About this Mac > Storage. If there's not too many GB left on the free side of your disk, time to clean up.

The easy way to get rid of extra files and give your system a polish is to use CleanMyMac. It's cleaning module is everything you want from a good app: it has a one-click solution and a bunch of semi-automated options for picking out and removing large old files.


To clean your hard drive with CleanMyMac:

  1. Open CleanMyMac.
  2. Choose the Smart Scan in the left side
  3. Click Scan.
  4. Hit Run.

If you take a few moments to carefully clean up Large and Old files, you'll be gigabytes and gigabytes out, you can't imagine how much garbage hangs in there. From personal experience, it takes about half a year to clutter a Mac with random stuff.

  1. Click Large & Old Files and click Scan.
  2. Find what you'd like to remove in there.
  3. Hit Remove.

Now, here are a few other app suggestions to free up more space.

Gemini — removes duplicated images and similar photos.

Dropshare — lets you quickly move files into the cloud.

When Mac freezes but mouse still moves

A rare case that can signal two things: your Mac is nevertheless locked up and regular solutions fit (restart, check Activity monitor, find problematic apps, clean hard drive)or there's a hardware problem.

There's a way you can check if the latter is the case without taking your Mac to a service store. Install iStat Menus and use its indicators to see if there's an ongoing problem with your drives or battery. Pay attention to the CPU temperature and battery life in particular.

Another way to diagnose your Mac would be to run a specific hardware test administered by Apple itself.

Here's how to run Apple Hardware Test

Preparation: disconnect all external devices except keyboard, mouse, display, and power connection. Put your Mac on a table or anything flat (a soft bed would be a poor choice).

  1. Shut down the Mac.
  2. When turning back on, immediately press and hold the D key until you see the Test icon.
  3. Select language and click the right arrow or press the Return key.
  4. Click the Test button to begin. You can also press T or Return.
  5. Upon completion, take a look at the lower part of the window and study the results.
  6. To quit, hit Restart or Shut Down at the bottom.

How to avoid a Mac freezing

When a Mac freezes, those solutions are reactive, and while you are going to be up and running again soon, you should think about fixes that will help you avoid crashes in the future.

CleanMyMac is one way to cleanup an untidy Mac. Other apps worth installing from Setapp collection include iStat Menus we mentioned before, a handy app that will quickly identify what is absorbing so much CPU processing power and advise those applications are closed. Unlike Activity Menu, iStat Menus providers users with even more useful data, and is available through Setapp, along with hundreds of other apps for Mac customers, all for one convenient price. Remember to pay attention to CPU temperature as a key potential indicator of an upcoming freeze. When it's too high, quit apps and processes that take too much of its power.

That's about it on the matter of freezing Macs, we hope this article has been of help. Every app we mentioned is available on Setapp, an app collection by subscription. More than a hundred ultra-useful tools for all kinds of Mac maintenance, lifestyle, and work tasks. Sign up to try it.

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/Browser Cleanup /Firefox Keeps Crashing on Mac? Top Solutions in 2021

Help! My Firefox keeps crashing on Mac everytime I use it.
It is so annoying to close and reopen this browser every single time. How do I fix firefox keeps crashing Mac issue?

Of course! Read this new post in detailed, you will find the easiest ways to fix firefox keeps crashing on Mac.

How Do I Fix Firefox from Crashing on Mac?

Users of Mozilla Firefox browser are confused when opening it but it closes or quits. So how to fix this Firefox crash Mac issue? Try these ways below:

  1. Update Firefox Browser
  2. Update Your Mac OS
  3. Update Plugins
  4. Update the Security Software
  5. Use Safe Mode
  6. Clean Install Firefox
  7. Check Hardware
  8. Report Crash Error

Article GuidePart 1. What Does Browser Crash Mean?Part 2. How Do I Fix Firefox from Crashing on Mac?Part 3. How to Solve Firefox Crashing on Startup Issue?Part 4. Prevent Firefox Problems with Browser Cleanup ToolPart 5. Conclusion

Part 1. What Does Browser Crash Mean?

A Browser Crash is an unexpected quitting or closing of a browser in the middle of any activity. Once a browser crashes, you can see a pop-up crash report box to let the developers know of what happened. We all experience crashing browsers at some point in our lives and it is fine. However, if the crashing happens most of the time, well this is a big problem already.

There are recent reports that the Mozilla Firefox browser is experiencing frequent crashing issues and users can no longer stand it. This is a terrible user experience. However, there are also possible solutions on how to fix firefox keeps crashing on Mac issues.

Part 2. How Do I Fix Firefox from Crashing on Mac?

When your Firefox keeps crashing constantly, don't panic! We will help you get over this issue and fix in no time. Here are some tips recommended by Mozilla in order to fix firefox crashes problems.

2.1 Update Firefox Browser

The crashing problem can also be caused by bugs on the current version that you are using. To fix this issue, try to check if there is an available update for your Firefox browser:

  1. Click the menu button.
  2. Click Help.
  3. Scroll down to About Firefox.
  4. Let Firefox check and scan for updates.
  5. Click Restart to Update Firefox.

Firefox Freezing Mac

The Firefox browser will restart in a while and it will load up using the updated version without the crashing anymore.

Note: Make sure you only download the latest firefox version from the official site to avoid malware infections.

2.2 Update your Mac OS

Your computer's operating system can also cause crashing on some web browsers. Follow these steps on how to update your computer's operating system:

  1. Go to AppStore.
  2. Click on Updates.
  3. Find Software Updates.
  4. Find Mac OS.
  5. Click Update and wait until Mac restarts.

2.3 Update Plugins

If you have already updated both the Firefox browser and the computer's OS and the firefox keeps crashing still, check maybe your plugins needed some upgrade in order to get rid of the issue. Check your installed plugin's website for their latest update and install it on your browser.

2.4 Update Security Software

You internet security protection software can also interrupt your web browsing activity at random times and this can be so frustrating.

This might be a sign that your anti-virus software needs an update. To fix this, simply go your anti-virus' settings and check for the latest updates and follow the steps on how to install it.

2.5 Open Firefox in Safe Mode

To further determine if the problem is more than just crashing, try using Firefox on Safe mode and check whether it is still crashing or not. Here is how to open Firefox in safe mode:

  1. Go to the menu and click Help.
  2. Click Restart with Add-ons Disabled.
  3. Click SHIFT upon starting the Firefox browser to enter Safe mode.

2.6 Clean Install Firefox

If using the Safe mode does not fix firefox keeps crashing issue then why not try a clean install and check if it is still happening? Don't worry about your bookmarks, and other personal downloads, these files are stored and saved on a separate folder.

Uninstall Firefox

  1. Delete Firefox installation folders : (C:Program FilesMozilla Firefox and C:Program Files (x86)Mozilla Firefox).
  2. Download a new Firefox browser.
  3. Follow the installation process.

Once you have installed a fresh and clean browser, test to see if the crashing still occurs.

2.7 Report Crash Error

To better get a real fix on the Firefox keeps crashing issue, you can report it straight to the developers. All you need is to note down the crash ID.

Follow these steps on how to report crash incidents.

  1. Go to the Firefox location bar and enter about: crashes.
  2. Find Report ID and look for the latest crash and open it in a new tab (it will lead to
  3. A message will appear 'Your report is being processed'.
  4. Wait until the process is finished.

2.8 Check Hardware

Although least among the suspects, your hardware can also interrupt the way the browsers act. If the RAM is out of space, it might cause certain crashing on any applications, software, and services that you are using on the device. You can use the Memtest86+ tool to diagnose your RAM.

Part 3. How to Solve Firefox Crashing on Startup Issue?

If your Firefox keeps crashing on startup, you tried it again and again but it still doesn't work, you might lose all your patience soon. Don't worry, because we have solutions recommended by Mozilla to help you get Firefox working again.

The first thing you need to do is to check if Firefox is on Safe Mode, just following the steps mentioned above of Open Firefox in Safe Mode in Part 2, then see if Firefox still crashing. If Firefox crashing happens in Safe Mode, then you need to clean install Firefox:

  1. Remove Firefox from your Mac.
  2. Delete installation folders of Firefox: (which located in C:Program FilesMozilla Firefox or C:Program Files (x86)Mozilla Firefox).
  3. Download a new version of the Firefox browser.
  4. Double-click on it and follow the installation process.

Last, Firefox crashing on startup may due to some malware or software. Just doing a deep scan on your Mac to find malware or software that causing the crash problem and remove them permanently.

Part 4. Prevent Firefox Problems with Browser Cleanup Tool

Now when all else fails, and you feel like you have done everything thing you could, we recommend to rely on a better solution like cleaners to prevent firefox keeps crashing problem.

iMyMac PowerMyMac is a safe and effective tool that automatically scans and detects any Junk Files to get rid of, diagnoses Mac status, cleans browsers, and many more.

To better prevent firefox not working on Mac problem, use Privacy by iMyMac PowerMyMac to resolve it as soon as possible:

  1. Download and Launch iMyMac PowerMyMac.
  2. Choose Privacy Option and Start Scan.
  3. Preview and Select Desired Browser Data to Clean.
  4. Wait for Browser Cleaning Finished.

Step 1. Download and Launch iMyMac PowerMyMac

Download iMyMac PowerMyMac on your computer and launch the program.

Step 2. Choose Privacy Option and Start Scan

Launch the program and find Privacy on the left side tools. Then click Scan.

Step 3. Preview and Select Desired Browser Data to Clean

Preview and delete browser cookies, caches, histories, and other necessary files that can cause crashing.

Firefox Freezing Mac And Chicken

Step 4. Wait for Browser Cleaning Finished

Click Clean and wait until all the process is completed

So easy, isn't it? It could help to prevent problems like FireFox's breakdown. PowerMyMac also helps you solve your Mac running slow or looking for duplicate photos issues or others, just have a free trial first!

Next time that you are experiencing browser crashing on your Mac, use Privacy for the fast and efficient result. No confusing methods, and reckless efforts.

Part 5. Conclusion

There you have it, you have just learned how to fix firefox keeps crashing 2021 on your Mac. You will no longer get frustrated while surfing online. If your firefox tabs keep crashing, check out ways here to fix it. Have you already tried Privacy by iMyMac PowerMyMac so that you can make your Mac cleaned up? Share your comments below!

ExcellentThanks for your rating.

Rating: 4.6 / 5 (based on 62 ratings)

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Sily2018-11-28 10:16:05

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