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.

Chosen solution

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

Read this answer in context 👍 2

All Replies (2)

more options

Seçilmiş Həll

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!