How do I set up Sync on my computer?

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  • Reviewed by: AliceWyman
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A Firefox Account lets you sync your data and preferences (such as your bookmarks, history, passwords, open tabs and installed add-ons) across all your devices. It's free to use.

Important: Sync is not a data backup service. Users should continue to perform regular backups of their Firefox profiles to prevent loss of data.

Create a Firefox Account

You will need a Firefox Account to set up sync. To create an account:

  1. Click the Firefox Account icon in the toolbar.
    Fx71SignInToFirefox-TurnOnSync
  2. Click Sign in to Firefox.
  3. Fill out the form to create an account.
    • Take note of the email address and password you used. You'll need them to sign in.
  4. Firefox Accounts will send you a confirmation email. Use the verification link or code to confirm your account.
  5. Click the Firefox Account icon to expand the menu.
  6. Click Sync Now.

  1. Click the Mozilla account icon in the toolbar.

    syncavatar logged out
  2. Click Turn on Sync.
  3. Fill out the form to create an account.
    • Take note of the email address and password you used. You'll need them to sign in.
  4. Firefox Accounts will send you a confirmation email. Use the verification link or code to confirm your account.
  5. Click the Firefox Account icon to expand the menu.
  6. Click Sync Now.
Note: A mobile phone number is not required to set up Sync. To bypass the page asking to send Firefox to your smartphone, if shown during the sign-in process, simply open a new tab or window.

Connect additional devices to Sync

A device could be a mobile device (such as a smartphone or tablet), a desktop computer, or another Firefox profile. For mobile devices, see:

To connect another desktop computer or profile, just sign in and let Firefox Sync do the rest. To sign in, you'll need the email address and password you used in the previous section.

  1. Open Firefox on the computer or profile you want to sync.
  2. Click the Firefox Account icon in the toolbar.
    Fx71SignInToFirefox-TurnOnSync
  3. Click Sign in to Firefox.
    • If you're already signed in, click Sync Settings to choose what to sync or Sync Now to start syncing immediately.
  1. Open Firefox on the computer or profile you want to sync.

  2. Click the Mozilla account icon in the toolbar.

    syncavatar logged out
  3. Click Turn on Sync to sign in.
    • If you're already signed in, click Sync Settings to choose what to sync or click Sync Now to start syncing immediately.

Disable Sync for previously synced devices

For additional information, see Disable Firefox Sync.

To choose what information to sync, see How do I choose what information to sync on Firefox?