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Firefox Keeps Crashing on Your Mac? Try These 6 Best Fixes

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Last updated: September 6, 2023

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If Firefox keeps crashing on your Mac while you’re working, it can be disruptive to your browsing experience.

In this guide, I will share practical solutions and step-by-step instructions to fix the Firefox crashing issue on your Mac. Whether it’s a minor glitch or a more persistent problem, I’ve got you covered.

Before We Begin

MacKeeper’s Safe Cleanup identifies and eliminates junk files, redundant data, and other system clutter that can contribute to software instability, leading to Firefox crashes. It also frees up valuable disk space and optimizes your Mac’s memory, reducing the likelihood of crashes and improving overall system performance.

Why Does Firefox Keep Crashing on Your Mac?

There can be several reasons why Firefox might be crashing on your Mac. Here are some common causes:

  1. 🔍 Outdated Firefox version: If your Firefox is outdated, it can cause crashes and freezes. It is because the outdated version is incompatible with newer system requirements.
  2. 💀 Corrupted Firefox profile: Sometimes, the user profile that Firefox uses to store settings and data can become corrupted, leading to crashes.
  3. Problematic extensions or themes: Certain extensions or themes installed in Firefox can cause crashes. It happens because a particular extension is not compatible with your system.
  4. ⚠️ Conflicting software: Other software installed on your Mac, such as security software, ad blockers, or other browser extensions, can also interfere with Firefox and lead to crashes.
  5. 💾 Insufficient system resources: If your Mac is running low on memory (RAM) or disk space, it can impact Firefox’s performance and stability.
  6. 🎮 Graphics driver issues: Outdated or incompatible graphics drivers can cause crashes in Firefox. Make sure your Mac has the latest graphics drivers installed.
  7. ⚙️ Hardware issues: In rare cases, a faulty hardware component can cause Firefox crashes. If Firefox is consistently crashing even after trying the above steps, it might be worth considering a hardware issue.

Prevent Firefox Crashes With MacKeeper in Just One Click

If Firefox keeps crashing on your Mac, consider a one-click solution like MacKeeper before trying other solutions.

MacKeeper’s Safe Cleanup feature scans and cleans up Mac’s storage system, removing unwanted or unnecessary files and optimizing performance.

Here’s how to use the Safe Cleanup feature:

  1. Download and install MacKeeper on your Mac.
  2. Launch the app and open Safe Cleanup from the Cleaning section.
click safe cleanup under the cleaning section 4
  1. Click Start Scan.
click start scan 3
  1. Select the files you want to remove or click Check All.
select junk files to remove or click check all 4
  1. Click Clean Junk Files.
tap clean junk files 4
  1. This will remove the selected junk files from your Mac. You can click Rescan to repeat the process.
click rescan to scan the system again 1

What Else Can MacKeeper Do?

Besides cleaning up junk files from your Mac, MacKeeper can remove login items, run a virus scan on your Mac, and free up memory. If you’re interested in learning about its other features, read my detailed MacKeeper review.

6 Quick Fixes to Try If Firefox Keeps Crashing on Your Mac

Browser crashes can be frustrating, be it Safari crashing or Firefox. Below, I’ve shared some effective solutions to tackle the problem of Firefox crashes on your Mac.

1. Clear Download History

When Firefox freezes or crashes while downloading files, clearing your download history can often resolve the issue. Follow these steps to clear your download history on Firefox:

  1. Open Firefox, click the Firefox menu button in the top-right corner, and select Downloads.
click the firefox toolbar and select downloads
  1. In the Downloads Library, click Clear Downloads to remove the download history.
click on clear downloads to remove the download history
  1. Now, restart Firefox to check if it still crashes.

2. Create a New Places Database

If Firefox freezes randomly, it’s possible the database in Firefox has become corrupted. Resetting the places database can resolve this issue.

Resetting the places database will delete today’s history and bookmarks.

Here’s how to create a new places database on Firefox:

  1. Click the Firefox menu, select Help, and choose More Troubleshooting Information.
and choose more troubleshooting information
  1. In the Application Basics table, locate the Profile Folder section and click Show in Finder.
locate the profile folder section and click on show in finder
  1. In the Finder window, navigate to the profile folder named gdpl1e1q.default-release (the name may vary slightly).
navigate to the profile folder named gdpl1e1q default release
  1. Quit Firefox completely.

3. Turn off Hardware Acceleration

Hardware acceleration can sometimes conflict with certain configurations on your Mac and lead to crashes in Firefox. Disabling hardware acceleration might resolve the issue.

Follow these steps to turn off hardware acceleration:

  1. Open Firefox, click Firefox in the menu bar, and select Settings.
click on settings from the drop down menu
  1. In the General tab, scroll down to the Performance section.
scroll down to the performance section
  1. Uncheck the box next to Use recommended performance settings.
uncheck the box next to use recommended performance settings
  1. Uncheck the box next to Use hardware acceleration when available.
uncheck the box next to use hardware acceleration when available
  1. Restart Firefox to apply the changes.

4. Check for Updates

Outdated software can often cause compatibility issues and lead to Firefox crashes. Make sure your Firefox browser is up to date by following these steps:

  1. Open Firefox, click Firefox in the menu bar, and select About Firefox.
click on the firefox menu and select about firefox 1
  1. The About Firefox page will open and automatically check for updates.
  2. If updates are available, click the Restart to Update Firefox button to install them.
if updates are available click the update button to install them
  1. This should resolve the Firefox crashing on your Mac issue.

5. Boot into Safe Mode

If Firefox keeps crashing on your Mac even after updating the app, booting your Mac into Safe Mode is your next step. It can help identify any conflicting plugins or extensions which you can disable and use Firefox without the crashes.

Here’s how to boot your Mac into Safe Mode:

On Apple Silicon Macs

  1. Click the Apple icon and choose Shut Down from the drop-down menu.
click apple icon and select shut down 3
  1. Wait for your Mac to shut down completely and press the power button to turn it on.
macbook air touch id 2
  1. Keep holding the power button until you see the Loading startup options screen.
loading startup options screen on mac
  1. Select a volume from the options.
select a volume
  1. Press and hold the Shift ⇧ key and click Continue in Safe Mode.
macbook air shift key 1
  1. Your Mac will restart automatically, and you will see Safe Boot in the menu bar when the login screen appears.
safe boot mode on mac 1

On Intel-Based Macs

  1. Restart or turn on your Mac and press and hold the Shift ⇧ key immediately.
macbook air shift key 2
  1. Keep holding the Shift ⇧ key until you see the login screen.
  2. Release the Shift ⇧ key and log in to your Mac.
  3. You may be asked to log in again.
  4. You’ll see Safe Boot in the menu bar on your first or second login window.
safe boot mode on mac 2
  1. Open Firefox and check if it works properly in Safe Mode.
  2. If Firefox works fine in Safe Mode, you may need to remove certain plugins or extensions causing the crashes.
  3. To exit Safe Mode, restart your Mac normally.

6. Reinstall Firefox

If Firefox still crashes after trying the above steps, reinstalling the browser can help resolve any underlying issues.

Follow these instructions to reinstall Firefox on your Mac:

  1. Close Firefox and open the Applications folder in Finder.
click on applications in the left menu bar
  1. Locate the Firefox application and drag it to the Bin.
  2. Click Go in the menu bar and select Go to Folder.
open finder click go menu and select go to folder 3
  1. Enter the following path in the text box and press Enter:
type library in the box 1
  1. In the Library folder, navigate to the Caches and Application Support folders, locate the Firefox folder in each, and delete it.
  2. Visit the official Mozilla Firefox website and download the latest version of Firefox for Mac.
  3. Install Firefox by following the on-screen instructions.

Stop Firefox Crashes on Mac

Now that you know how to fix Firefox crashing on Mac, learn how to improve your browsing experience further with these tips:

Frequently Asked Questions

  1. Why does Firefox keep crashing on my Mac?

    Firefox may keep crashing on your Mac due to various reasons, such as incompatible extensions, outdated software, corrupted files, or conflicts with other applications.

  2. Will reinstalling Firefox fix the crashing issue?

    Reinstalling Firefox may or may not fix the crashing issue but it can resolve certain performance issues. It’s recommended to try other troubleshooting steps mentioned above before considering a reinstallation.

  3. How can I ensure a stable browsing experience on Firefox?

    To ensure a stable browsing experience on Firefox, keep the browser and your Mac’s software up to date, avoid installing unnecessary extensions, clear cache and cookies regularly, and follow best security practices while browsing.

Hashir Ibrahim


I'm Hashir, a tech journalist with a decade of experience. My work has been featured in some of the top tech publications like MakeUseOf and MakeTechEasier. I have a bachelor's degree in IT, a master's in cybersecurity, and extensive knowledge of Apple hardware, specifically MacBooks. As the senior writer at MacBook Journal, I write in depth guides that help you solve any issues you have with your mac and unbiased reviews that help you make the right buying decisions.



Hi there! I'm Ojash, a tech journalist with over a decade of experience in the industry. I've had the privilege of contributing to some of the world's largest tech publications, making my mark as a respected Mac expert. My passion lies in exploring, using, and writing about MacBooks, and I enjoy sharing my expertise to help others make informed decisions and get the most out of their MacBook experience. Join me as we delve into the fascinating world of MacBooks together!

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