Join the Mozilla’s Test Days event from Dec 2–8 to test the new Firefox address bar on Firefox Beta 134 and get a chance to win Mozilla swag vouchers! 🎁

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

Firefox browser did an update and deleted all of my bookmarks and history

  • 5 replies
  • 0 have this problem
  • 23 views
  • Last reply by jonzn4SUSE

more options

Firefox decided to do an update and when I restarted it all of my bookmarks and history were gone. Is there any way to recover them?

Firefox decided to do an update and when I restarted it all of my bookmarks and history were gone. Is there any way to recover them?

All Replies (5)

more options
more options

When I check, there are no other profiles, just the new, empty default.

more options

Doesn't Mac have a Wayback Machine?

more options

I was traveling at the time and did not have access to my time machine backup. At that time, I tried restoring bookmarks to a prior date. This recovered the bookmarks but not the history. When I got home, I used the time machine backup to copy in the older version of Firefox's Application Support directory. This restored the bookmarks and the history. I was unable to find the older version of the Cache directory, so I don't know if the restoration was complete or the correct way to do it.

HOWEVER, in the last couple days since that recovery, Firefox has spontaneously reverted my default search engine to Google and has deleted the bookmarks and history two additional times.

more options

I recommend you run different versions of Firefox so that you data is syned in different browsers like a "backup". see screenshot