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!

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

I have upgraded to Firefox 4, but when I restart my computer I am back to the old version

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

more options

When ever I upgrade to Firefox 4 all my old book marks dissappear. And then when i restart my computer I am back having the old version of Firefox again and have to upgrade once again. I have now done that five times and I am about to give up on Firefox. I have a MacBook Pro, is that something that causes any problems? Please help me with this, I don't want to upgrade one more time and add on all my old book marks once more

Best regards, Andreas

When ever I upgrade to Firefox 4 all my old book marks dissappear. And then when i restart my computer I am back having the old version of Firefox again and have to upgrade once again. I have now done that five times and I am about to give up on Firefox. I have a MacBook Pro, is that something that causes any problems? Please help me with this, I don't want to upgrade one more time and add on all my old book marks once more Best regards, Andreas

All Replies (1)

more options

Make sure that you install Firefox properly.

Download a new copy of the Firefox program and save the DMG file to the desktop

  • Trash the current Firefox application to do a clean (re-)install
  • Install the new version that you have downloaded

Your profile data is stored elsewhere in the Firefox Profile Folder, so you won't lose your bookmarks and other personal data.