Mozilla Firefox Crashes Unexpectedly or Won't Open

Mozilla Firefox Crashes Unexpectedly or Won’t Open

Mozilla Firefox is one of the most trusted web browsers for Windows users. Millions of users rely on Firefox as it has a lot of benefits. But while most of the times, it works as expected, it is not uncommon for Firefox to throw some errors your way.

For Windows users, one of the most problematic issues arises when Firefox keeps crashing for no apparent reason. It can happen to you if you try opening Firefox or even when you open multiple tabs on the browser.

It is important to note that that this issue can occur for a number of reasons under different circumstances. Fortunately, you can fix this problem through several ways. Using these methods you can fix this issue once and for all and get your Firefox working normally again.

Why does my Firefox keep crashing?

There are a multitude of reasons why your Firefox might be crashing on Windows. Let us take a look at some of the reasons that could cause this issue;

  1. Your Firefox browser could have become outdated or obsolete. It might require an update.
  2. It is also possible that the Windows version you are running is not updated.
  3. Your Firefox can also crash because of mismatched cache and other settings issues.
  4. When Firefox is not properly installed, it can also cause a crash from time to time.
  5. Broken or damaged add-ons and extensions could also be causing your Mozilla Firefox to crash.

How can I stop Firefox from crashing?

Just as there are various issues that you might encounter in Mozilla Firefox, there are also a number of solutions that can prove to be effective in this case. Let’s take a look at the various troubleshooting methods for this problem.

Solution 1: Update Firefox

Getting the latest version of Firefox is one of the most significant ways that can help in preventing this problem from recurring. Therefore, the first thing that you need to check if the Firefox you are running is the most updated version. Steps listed below can help you do that;

Step 1: Firstly, open your Firefox browser on the computer and then try clicking on the browser’s menu. Thereafter, choose “Help” from the given options and then select the option named “About Firefox

Step 2: A new window shall open which will begin looking for available updates for Firefox. Firefox will download and install the update automatically, if it is available.

Step 3: Subsequently, after the update process is complete, you need to click on the “Restart to Update Firefox” option to end the process.

Solution 2: Clear Firefox Cache

Firefox and other browsers may save some data on your system to help websites load faster. This data is called cache. When this cache is corrupted, it can have a rather opposite effect, sometimes even causing the web browser to crash.

The best way to fix this problem is clearing the cache on the browser. Here’s how you can do it;

Step 1: Firstly, open the Firefox on your computer. Thereafter, you need to click on the menu button.

Step 2: Secondly, choose “History” from the options presented to you.

Step 3: Thirdly, from the drop-down menu, you need to click on the “Time Range to Clear” option. Thereafter, choose “Everything”.

Step 4: Finally, choose the data and items that you would like to clear and then click on the “Clean Now” option.

Lastly, Restart Firefox one more time after the process is complete to check if the issue is resolved.

Solution 3: Disable Firefox Add-Ons

A lot of the times, broken add-ons and extensions could cause the problem and it, therefore, may be a good idea to disable these add-ons and extensions so that it doesn’t affect the browser. Following steps can help you to disable add-ons and extensions:

Step 1: Firstly, open Firefox on your computer and then you need to click on the menu icon.

Step 2: Secondly, click on “Help” option.

Step 3: Choose “Restart with add-ons disabled” and then click on the “Restart” option in the dialog box that will appear.

Solution 4: Check for Viruses

One significant reason behind the crashing of Firefox is the malicious virus and malware. The same rings true for any software that is incompatible with Firefox.

If you installed a program and the issue began soon after, then it is likely that the newly installed program caused it. It could be because of its incompatibility with Firefox.

Time and again, it is almost imperative to run a full system scan for your PC which is using a powerful antivirus software. Though you can use a number of third-party antivirus Programs, we would suggest using Windows 10 defender program.

Solution 5: Update your Drivers

The issue sometimes lies with the drivers on your computer and not the Firefox browser. Thus, updating the drivers could keep Firefox from crashing. In order to update drivers on your Windows 10 system, you need to follow these simple steps;

Step 1: Firstly, press the Windows Key and R key together on your keyboard to open the Run dialog box.

Step 2: Fill in “devmgmt.msc” into the dialog box. Thereafter, press the Enter key. This opens the Device Manager.

Step 3: You should see the list of all devices installed on your system. Devices that require a critical update should be marked with a yellow exclamation mark.

Step 4: In case you don’t see any critical updates, you need to locate the most significant drivers which are necessary to keep your computer running normally. Furthermore, right-click on the device and then choose “Update Driver”.

Step 5: Furthermore, follow the instructions displayed on the screen and when the update is complete, you need to restart the system to finish the process.

Part 3: How can I view a Firefox Crash Report?

When you implement some or all of the solutions above, you might want to check the crash reports to determine if the issue has been resolved. Checking crash reports on Firefox is pretty easy.

You need to just open the Firefox and then fill in “about crashes” in the address bar. Thereafter, press Enter and you will see the Crash Report.

Furthermore, click on the “View” option present next to the crash report. This way, you can view the crash report.

Wrapping Up

We have tried above to provide solutions for the Firefox keeps crashing issue. After reading this blog, you might have become aware of the various reasons for the Firefox keeps crashing issue as well as the solutions that can help troubleshoot them.

If after following the above-mentioned solutions, you are still facing issues, then it is time to get in touch with expert professionals who can take care of such issues. Please visit our website connecthelpline or send us a mail at

Frequently Asked Questions:

Ans. The first and the foremost solution is updating your software as it might be outdated. You can also update your Windows Operating system to the latest version. Also, you need to update your drivers. You can try to run your system in safe mode and try to check if Firefox keeps crashing. If your Firefox is still crashing, then your extension or hardware acceleration might not be the cause. Therefore, you do not need to fix them.
Ans. When malware is installed on your PC, it can cause tabs to keep crashing. This issue may also arise from the Firefox hardware installation or an outdated graphics display driver.
Ans. A corrupt add-on or extension may cause Firefox to not open on my computer. If your Firefox is opening in Safe Mode, then this could be the case. If it does not open in safe mode, then the problem could be from the software or user preference files.