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.

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

19 working fine, downloaded 20 - it crashes frequently, hogs memory, runs scripts and slows down internet. I don't want a fix, just reinstall 19

  • 2 replies
  • 5 have this problem
  • 1 view
  • Paskiausią atsakymą parašė cor-el

more options

FF 19 was working fine. Downloaded 20 and within 5 mins. it crashed. Script running problems again and it slows down my internet connection tremendously. I don't want to fix it, I want to go back to FF 19 but can't find it - it doesn't exist Running XP SP 3. If I can't go back to FF 19, then I'll just remove it and stick with Chrome. I like the old private browser in FF 19 better. I run 20 - 40 tabs open at a time and the way the new Private browser works with the existing window open just uses more memory Thanks!

FF 19 was working fine. Downloaded 20 and within 5 mins. it crashed. Script running problems again and it slows down my internet connection tremendously. I don't want to fix it, I want to go back to FF 19 but can't find it - it doesn't exist Running XP SP 3. If I can't go back to FF 19, then I'll just remove it and stick with Chrome. I like the old private browser in FF 19 better. I run 20 - 40 tabs open at a time and the way the new Private browser works with the existing window open just uses more memory Thanks!

All Replies (2)

more options

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.


Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

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:

If you have submitted crash reports then please post the IDs of one or more crash reports that have this format:

  • bp-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

You can find the IDs of the submitted crash reports on the about:crashes page.

  • You can open the about:crashes page via the location bar, like you open a website.

See: