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

If I lost my mobile, how can I deactivate firefox sync on it... without it?

  • 1 reply
  • 1 has this problem
  • 4 views
  • Last reply by Dave G

more options

I have Firefox Sync running on my laptop, my desktop and on my smartphone too. If someone stole my phone... how can I stop Firefox Sync only on that device, from my laptop or desktop? I only know how to disable firefox sync on the device I want to disable. But if the device is not with me anymore... What should I do? If I stop using Firefox Sync on my desktop, my laptop will not sync anymore..

I have Firefox Sync running on my laptop, my desktop and on my smartphone too. If someone stole my phone... how can I stop Firefox Sync only on that device, from my laptop or desktop? I only know how to disable firefox sync on the device I want to disable. But if the device is not with me anymore... What should I do? If I stop using Firefox Sync on my desktop, my laptop will not sync anymore..

All Replies (1)

more options

You'll need to change your Sync password and then reconnect things using the new password. For more detail, read here:

Disable Firefox Sync on a lost phone or tablet