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

Wannan tattunawa ta zama daɗaɗɗiya. Yi sabuwar tambaya idan ka na bukatar taimako.

Getting hundreds of duplicate bookmarks when sync'ing between Firefox on two computers

  • 4 amsoshi
  • 2 sa na da wannan matsala
  • 16 views
  • Amsa ta ƙarshe daga cor-el

more options

Firefox sync is creating hundreds of duplicates between Firefox ver.45.01 on one computer running Win7 and Firefox ver.45.01 on another computer running Win7

Are other people having the same problem in Firefox?

Is there some way to stop the duplicates?

Thank you, Docfxit

Firefox sync is creating hundreds of duplicates between Firefox ver.45.01 on one computer running Win7 and Firefox ver.45.01 on another computer running Win7 Are other people having the same problem in Firefox? Is there some way to stop the duplicates? Thank you, Docfxit

All Replies (4)

more options

When you are having a problem using sync, shut it down on all computers. On your 'main' system, try one of these;

Use with Extreme Caution;

Bookmark Duplicate Cleaner {web link} Scans for bookmark duplicates and allows you to delete them


Bookmarks Checker - check for bad links {web link} Check favorites for broken or bad links. It checks for bad links and displays a report if it finds something. Check for 404 links, timeout links.

more options

I tried Bookmark Duplicate Cleaner. It works very well. As soon as I sync the computers the duplicates come back and I get more duplicates.

I tried Bookmarks Checker. It does a great job of finding bad links.

That doesn't stop Firefox from creating duplicates links and folders.

I can't continue using Firefox sync when It continues to make duplicates. It takes me hours to remove the duplicates it makes.

Thanks,

Docfxit

more options

Firefox Sync may struggle when there are a lot of bookmarks, a lot of differences or a you have a slow connection. You could try not syncing bookmarks, just turn that option off. You could try making it easier for Firefox and manually backup bookmarks from one computer to the others while sync was off. Sync would then only need to add new bookmarks as you added them and may work ok again.

Personally I avoid using Firefox Sync, and have hoped Firefox developers would review and update out documentation on Sync. Maybe then we would be able to give better advice, maybe even some indication of when to use or not to use Firefox Sync.

I will add an escalate tag to this question, let's see if Helpdesk staff can add useful tips or a solution.

more options

You can check for problems with the places.sqlite database (bookmarks and history) in the Firefox profile folder.

See also:

If you use Sync then best is to disconnect Sync while performing maintenance/repair efforts to files in the Firefox profile folder.