Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox will not launch

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by cor-el

more options

Recently Firefox stopped working on my parent's computer, and I haven't been able to fix it - it simply won't launch.

I have tried a clean installation, creating a new profile, and running in safe mode (using the run commands), but none of these have done anything. In fact, even when I attempt to run the profile feature or safe mode, these will not launch either.

Firefox does not appear in the task manager, and as far as I know this problem has not arisen after any kind of update or plugin/addon installation.

Can anyone help?

This is on a 32 bit Win XP computer.

Recently Firefox stopped working on my parent's computer, and I haven't been able to fix it - it simply won't launch. I have tried a clean installation, creating a new profile, and running in safe mode (using the run commands), but none of these have done anything. In fact, even when I attempt to run the profile feature or safe mode, these will not launch either. Firefox does not appear in the task manager, and as far as I know this problem has not arisen after any kind of update or plugin/addon installation. Can anyone help? This is on a 32 bit Win XP computer.

All Replies (1)

more options

Did you check the security software on that computer?

It is possible that your security software (firewall, anti-virus) blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.

See:

See also;