How do I add a device to Firefox Sync?

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  • Creator: Michael Verdi
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  • Reviewed by: Verdi
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When you set up Firefox Sync on a second device, you're given a Passcode that needs to be entered on your Sync connected computer. This article will walk you through those steps.

Adding a device to Firefox Sync requires you to have set up Firefox Sync on your computer first. If you haven't done that, please see... ??

How do I Add a Device?

Do these steps on a computer that has your Firefox Sync account set up on it.

  1. Start Firefox on a computer that already has Firefox Sync set up.
  2. In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings, depending on your macOS version.Click the menu button Fx89menuButton and select Settings. In the OptionsPreferences window, click on the Sync tab.
  3. In the Firefox Sync Account section, click on Add a Device and the Add a Device window will open.
  4. Enter the Passcode in the Add a Device window as it's displayed on your second device and then click Next.
  5. When the Passcode is accepted you will see a Device Connected message in Firefox and your device will immediately begin syncing.

How do I Add a Device when I'm not near my computer?

Do these steps on the device you are trying to add to Firefox Sync.
If you are trying to add a device to Firefox Sync and you are not near your computer so that you can enter the Passcode, you can still get it done by entering your account information.

  1. From the Connect to Sync screen, clicktap I'm not near my computer...
  2. Next, enter your Account Name (email address), Password, Sync Key and clicktap Connect.
Your Sync Key is a long series of numbers that was generated for you when setting up your Sync account. If you don't have it saved in a file on your device or printed out, you'll need to retrieve it from your computer in order to complete this process. See Sync your Firefox bookmarks, history, passwords and more