How To Disconnect Devices From Firefox Sync

Firefox Sync is useful when using Firefox on different devices as it can sync all the browsing data (including passwords) and help with a consistent browsing experience. It is a good practice to disconnect devices that you no longer use Firefox on and so remove syncing from them for better online security.

Here is how to do that:

Access Firefox preferences by typing in the address bar:

about://preferences

accessing firefox preferences


Click on Sync.

Sync settings in Firefox
Then choose the Manage account option. Alternatively, you can log in to the Firefox account from here.

managing Firefox account

From the account dashboard, scroll down to Connected Services.

a list of connected services and devices which use firefox sync

All the devices and different Firefox services that you use will be listed here.

disconnect devices from Firefox Sync
Click on the Sign out button to disconnect devices on which Firefox is not used anymore.

Specify a reason (optional) and click on the Sign Out button.

confirm disconnecting devices from syncing
Firefox Sync will no longer be active on these disconnected devices.

It also helps to periodically review this dashboard and remove syncing from devices not in use, misplaced, lost, or otherwise inaccessible anymore. Besides this, it is also a good idea to add a recovery key to safeguard the Firefox account.

All done.

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