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

Recover sync data

  • 3 respostas
  • 1 has this problem
  • 1 view
  • Last reply by FredMcD

more options

Firefox updates and decided to sing me out, and I had to reset the password of my sync account (I didn't remember it), this has already happened in the past, but this time Firefox also decided to delete all my synch data without a warning (I have then learned from the assistance that this is the actual procedure now).

so my question is: Is there a way to get access to my synch data after I change my password?

Firefox updates and decided to sing me out, and I had to reset the password of my sync account (I didn't remember it), this has already happened in the past, but this time Firefox also decided to delete all my synch data without a warning (I have then learned from the assistance that this is the actual procedure now). so my question is: Is there a way to get access to my synch data after I change my password?

All Replies (3)

more options

Resetting the sync password, or changing its e-mail or password, will remove all data from the servers. The username and password are used to create the encryption.

This is a security feature. https://support.mozilla.org/en-US/kb/ive-lost-my-firefox-sync-account-information

  • I've lost my Firefox Sync account information - What to do
  • I’ve forgotten, or don't have access to, my Firefox Account email address

Note: Only the data on the servers is cleared. The profile data is not changed or removed.

more options

In the event that the passwords information is lost, you should record all information in a separate text file somewhere else on your hard drive, or written down. You can easily copy and paste if you need to do so. If you are concerned about someone else looking at that file, you can compress it using a password.

more options

Your ‘logged-in’ status is stored in special cookies. If the cookie is removed, you are logged out.


You may be in Private Browsing mode or told Firefox not to remember.

Type about:preferences#privacy<enter> in the address bar. The button next to History, select Use Custom Settings.

Turn off Always Use Private Browsing Mode Turn on Remember My Browsing And Download History At the bottom of the page, turn on Clear History When Firefox Closes. At the far right, press the Settings button. Turn on ONLY Cache and Form And Search History leaving the others off.

and whatever else you want.

Macs: Make sure you install Firefox properly and that you do not run Firefox from within the DMG (Disk Images) file. https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac