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.

Mozilla Support में खोजें

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

Firefox vanished. Bookmarks vanished. Yahoo toolbar vanished.

  • 1 प्रत्युत्तर दें
  • 1 यह समस्या है
  • 7 views
  • के द्वारा अंतिम प्रतियुतर Scribe

more options

I turned on my MAC os Sierra 10.12.1. Mozilla Firefox was missing. I downloaded it again. My bookmarks, favorites, & yahoo toolbar was missing. How do I retrieve?

I turned on my MAC os Sierra 10.12.1. Mozilla Firefox was missing. I downloaded it again. My bookmarks, favorites, & yahoo toolbar was missing. How do I retrieve?

All Replies (1)

more options

Hi, first try restarting Firefox - 3-bar menu > Exit Firefox in bottom right corner.

If that doesn't help, and in case a Refresh has occurred, please look on your Desktop for a file named Old Firefox Data - Refresh Firefox - reset add-ons and settings.

If the file isn't there, for bookmarks only, you can try this: Open bookmarks > Show All Bookmarks > Import and Backup > Restore, and see if you have a backup there.

If not and for other data, please see -


Yahoo Toolbar: https://addons.mozilla.org/en-US/firefox/addon/yahoo-toolbar-and-new-tab

If your question is resolved by this or another answer, please take a minute to let us know. Thank you!