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Firefox sync isn't working at all


Hello i want to sync mozilla firefox between two computers, I followed the guide on the web but mozilla doesen't do nothing. When I enter the code and click next, mozilla doesen't show me any FINISH button, just the start up wiondow. I try a several ti mes but still nothing. Does anyone have this problem. My mozilla is up to date so I don't know where the problem could be. I hope i get some answers.

With best regards

Additional System Details


  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0

More Information

  • Administrator
123 solutions 709 answers


Sorry for the inconvenience.

Are you following the steps described in this article? How do I set up Firefox Sync?

If this steps don't work, please, answer with a screenshot so we can see the specific message that you are receiving.

Thanks, Ibai

  • Top 10 Contributor
  • Moderator
10761 solutions 96850 answers

Try to reset the sync prefs on the about:config page that show bold, user set.

  • use the Search bar at the top of the about:config page to locate preferences more easily
  • preferences that have been modified and do not have the default value show as bold (user set)
  • preferences that are user set (bold) can be reset to the default value via the right-click context menu

Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

If the new profile works then you can transfer some files from an existing profile to the new profile, but be careful not to copy corrupted files.