This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Firefox will not launch at all. Used to work fine.

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

makerns63
makerns63
more options

Hello, I know very little about computers. I used an old version of firefox just fine, then it started using firefox in safe-mode, then it updated itself, I used firefox a few times and now it will not launch at all. When I click the firefox button nothing at all happens.

Hello, I know very little about computers. I used an old version of firefox just fine, then it started using firefox in safe-mode, then it updated itself, I used firefox a few times and now it will not launch at all. When I click the firefox button nothing at all happens.

All Replies (2)

user633449
user633449
more options

First, make sure your version of Windows is all up to date. If you don't have the latest Service Packs for windows XP, Firefox won't start. You may have to run update a few times to get them all.

Then, download and reinstall Firefox from www.getfirefox.com

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

A possible cause is security software (firewall,anti-virus) that 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: