How to disable signin to synch in Gecko engines like Firefox and Waterfox

Sign-in and syncing in web browsers refer to the processes of authenticating users and synchronizing their data, preferences, and sessions across devices and platforms. These features are implemented using various authentication methods and browser APIs. To disable sign-in and syncing in Firefox so that the browser no longer prompts you to sign in or sync data, you can follow these steps:

Method 1: Disable Sync via about:config

1. Open Firefox.
2. Type about:config in the address bar and press Enter.
3. Accept the risk warning.
4. Search for identity.fxaccounts.enabled.
5. Double-click the setting to change its value to false.
6. Restart Firefox.

This completely disables Firefox Account and Sync functionality, removing prompts to sign in or sync from the browser interface.

Method 2: Disconnect from Firefox Account (if already signed in)

1. Go to about:preferences in Firefox.
2. Click Firefox Account on the sidebar.
3. Click Disconnect next to your signed-in account.
4. Confirm the disconnection.

You can combine both methods to fully disable syncing and sign-in features.

This solution is supported from Firefox 60 onwards and prevents sync from appearing in menus or settings. It’s the most effective way to disable sign-in and syncing. Browser-based sign-in and syncing offer significant benefits in usability and security but require careful implementation to address privacy and compatibility concerns.

More Information ℹ

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• Reasons for 4 Mozilla Firefox