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[Fix] Firefox Keep Crashing Problem on Windows

firefox keep crashing

Mozilla Firefox is one of the classic and most trusted web browsers currently available for internet users. It has millions of loyal users that use it on a daily basis for their everyday searching, surfing, and work purposes. Unfortunately, just like any other online platform, it is not uncommon that people run into problems with Firefox when using it for online browsing. Some people may find that after updating their Windows, or sometimes for no reason at all, their Firefox program or application keeps crashing. It can be extremely annoying and can set you back quite significantly on whatever work you needed to do. So what can you do in such a situation when Firefox simply keeps giving up on you?

This guide will help you explore some ways and techniques you can use to fix this Firefox crashing problem and ensure that you are never stuck in an inconvenient spot with your browser.


Here is what you can do if your Firefox keeps crashing on Windows 10 or if it just will not open:

  • If you are not getting an error message:
    • Restart your computer.
    • Disable the Virtual Browsing feature if you have it on.
    • Try to use Firefox in the Safe Mode which you can open by pressing down the Shift key and clicking on Firefox.
    • Create a new Firefox profile and launch it.
  • If you are getting error messages:
    • Try deleting the files in the profiles.ini file.
    • Delete your Firefox profile and reinstall it.
    • Check if your antivirus program is blocking Firefox.
    • Ultimately, the fix-all solution is to reinstall Firefox after deleting it entirely from your system.


If you are using an older version of Windows, such as Windows 7, you will probably face a little bit more problems with Firefox. Users have reported crashing of the browser when using it with Windows 7 and even Mozilla has acknowledged this issue.

  • If you are using accessibility services, you are more than likely to face Firefox crashing on Windows 7. You can disable it to improve the performance and stability of Firefox.
    • Click on the Main Menu button on Firefox preferences.
    • Under options, go on Privacy and Security.
    • Scroll down until you find the option for Prevent accessibility services from accessing your browser.
    • Enable it by clicking on the normally empty, disabled box.
  • Sometimes, some add ons and extensions may be causing your browser to crash.
    • Click on the Firefox menu.
    • Go to the Add ons Manager.
    • Explore under the Extensions and Plugins tab.
    • See if there are any unnecessary plugins that may be interfering with the Firefox performance.
    • Uninstall and disable them.
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