This error is caused by a problem with Firefox program files. The solution is to remove the Firefox program and then reinstall Firefox. (This will not remove your passwords, bookmarks or other user data and settings which are stored in a separate profiles folder.)A crash is what happens when Firefox closes or quits unexpectedly. After a crash, you should see the Mozilla Crash Reporter appear. This article will help you fix crashes and show you how to get more help if you're having difficulties.

Note: If Firefox is open but won't respond to any of your actions, then this is a hang, not a crash. See Firefox hangs or is not responding - How to fix for solutions.

If Firefox crashes at startup: 1.Check to see if the crash happens in Safe Mode (see below). 2.Try a clean reinstall (see Firefox keeps crashing at startup). Otherwise, follow these steps in order.

Do you have days where Firefox just doesn't work? Well, we put together this guide to help. It'll show you where you can find solutions to many common issues and, as always, if you need extra help with any of this, we have a community of volunteers standing by.

Restore Firefox to its default state The Refresh Firefox feature can fix many issues by restoring Firefox to its default state while saving your essential information. Consider using it before going through a lengthy troubleshooting process.

Avoid crashes - Tips and tricks There's never a good time for a crash, and when Firefox crashes in the middle of something important it can be really frustrating. Luckily, we've got some easy things you can do to avoid crashes and keep Firefox running in tip-top shape. For the tech savvy, we've got articles that will help you troubleshoot and solve specific problems. And don't worry if you need extra help with any of this, we have a community of volunteers standing by. Update your software Crashes can be caused by different programs running on your computer. Making sure they are all up to date on a regular basis will help you avoid crashes and keep your computer secure and running great.

Update Firefox: Click the menu button New Fx Menu , click help Help-29 and select About Firefox. See Update Firefox to the latest release for details. Update Windows: Make sure you have all of the latest security and stability fixes. Go to the Start menu, select All Programs and then Windows Update. Update your drivers: Check your printer driver and graphics drivers are up-to-date. For more info, see Upgrade your graphics drivers to use hardware acceleration and WebGL. Update Internet Security software: Make sure you have the latest version of any Internet security software (including firewalls, antivirus programs, anti-spyware programs, and more).