We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

Since upgrading to 9.0.1 every time I start Firefox it grinds through all my addins checking them for cpmpatibility and then loads http://www.mozilla.org/en-US/firefox/9.0.1/whatsnew/ in addition to my home page.

  • 3 respostas
  • 28 have this problem
  • 8 views
  • Last reply by cardy

more options

Since upgrading to 9.0.1 every time I start Firefox it grinds through all my addins checking them for compatibility and then loads http://www.mozilla.org/en-US/firefox/9.0.1/whatsnew/ in addition to my home page.

Since upgrading to 9.0.1 every time I start Firefox it grinds through all my addins checking them for compatibility and then loads http://www.mozilla.org/en-US/firefox/9.0.1/whatsnew/ in addition to my home page.

francob modificouno o

All Replies (3)

more options
more options

Hello!. I have this problem too. What I've done is

1. Firefox orange button>help>Troubleshooting Information 2. Under Application Basics, click Open Containing Folder 3. there will be prefs.js, user.js and sessionstore.js 4. Delete all 3 files 5. restart and done.

on firefox press Ctrl+alt+del to clear everything, choose everything and delete all.

Hope it helps!

more options

pendekarlaut you are Gods gift. Mate I have spent 4 hours trying to resolve this problem trying every suggestion I could google and pick up off the firefox help pages to no avail. I tried reinstalling/system restore and countless fixes and non worked. I tried your solution and all back to normal now. Thank you again and have a good year as you deserve it. I cannot understand why Firefox doesnt just come up with this solution in the first place.. p.s I didnt use the ctrl alt delete as couldnt see the point in going to the task manager and closing programmes..

cardy modificouno o