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.

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

Undo sync

more options

Help! I was trying out sync, and I thought that clicking "sync" would bring up a menu or dialog box of some type, but it just went ahead and synced the data from the wrong computer. I lost years of bookmarks for work. How can I undo the sync and get all my bookmarks back? I saw another thread where a user had been able to do this by disconnecting the computer from sync. I tried this, but the bookmarks are still missing.

Help! I was trying out sync, and I thought that clicking "sync" would bring up a menu or dialog box of some type, but it just went ahead and synced the data from the wrong computer. I lost years of bookmarks for work. How can I undo the sync and get all my bookmarks back? I saw another thread where a user had been able to do this by disconnecting the computer from sync. I tried this, but the bookmarks are still missing.

Asịsa ahọpụtara

Firefox automatically saves bookmark backups. Restore a backup from prior to when you set up Sync.
https://support.mozilla.org/en-US/kb/restore-bookmarks-from-backup-or-move-them#w_restoring-from-backups

Gụọ azịza a na nghọta 👍 2

All Replies (2)

more options

Asịsa Ahọpụtara

Firefox automatically saves bookmark backups. Restore a backup from prior to when you set up Sync.
https://support.mozilla.org/en-US/kb/restore-bookmarks-from-backup-or-move-them#w_restoring-from-backups

more options

Well, there was only one backup of the bookmarks, but fortunately, it was before the erroneous sync. Thanks for your help!