Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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 isn't opening at all

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

Bong_Babu
Bong_Babu
more options

Firefox is not opening at all. How many ever times I try it, its not opening..the loading wheel comes and disappears. Its not coming up on the task manager as well. I tried opening it through 'run new task' in task manager, it still didn't open. I have gone the forum where I came across the similar problem and tried the steps mentioned in that but didn't help. https://support.mozilla.org/en-US/questions/970099#answer-476212. I'm out of ideas, could really use some.

Firefox is not opening at all. How many ever times I try it, its not opening..the loading wheel comes and disappears. Its not coming up on the task manager as well. I tried opening it through 'run new task' in task manager, it still didn't open. I have gone the forum where I came across the similar problem and tried the steps mentioned in that but didn't help. https://support.mozilla.org/en-US/questions/970099#answer-476212. I'm out of ideas, could really use some.

All Replies (2)

philipp
philipp
  • Moderator
more options

hello Bong_Babu, as such a problem can sometimes be caused by malware that is active on a system, i'd recommend to run a scan with different security tools like the free version of malwarebytes, adwcleaner & kaspersky security scan.

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

You can check if you can start Firefox in Safe Mode by holding down the Shift/Options key.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window

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 install for Firefox and the plugin-container process and the updater process.

See:

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test.