Action required: Update Firefox to maintain account sync post-March 31, 2024.
If you are running a version of Firefox equal to or older than Firefox 78 (general release or ESR) and you have a Mozilla account, you must follow these steps to ensure continued operation of your account in Firefox:
- Make sure you remember your password for your account on Firefox. If you do not have your password, you can use your account recovery keys to change your password. If you do not already have account recovery keys, you will need to reset your password without recovery keys.
- Backup your profile folder, just in case anything goes wrong.
- Update your Firefox browser.
- If you get an error when trying to update, you can reinstall Firefox.
- Sign back in to your account in the newly-updated Firefox.
A Mozilla account lets you sync your data and preferences (such as your bookmarks, history, passwords, open tabs and installed add-ons) across all your devices.
Table of Contents
Create a Mozilla account
You will need a Mozilla account to enable Sync. Learn how to sign up for a Mozilla account.
Choose what information to sync
See How do I choose what information to sync on Firefox?
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 more on mobile devices, see:
- Android phones and tablets: Sync bookmarks, tabs, history and passwords on Android
- iPads, iPhones and iPod touch devices: Sync bookmarks, logins and browsing history on Firefox for iOS
To connect another desktop computer or profile, just sign in and let Sync do the rest. To sign in, you'll need the email address and password you used in the previous section.
- Open Firefox on the computer or profile you want to sync.
- Click the menu button , then click the
- If you're already signed in (see How do I know the status of my sync?), click to start syncing immediately.
button next to and sign in.
Disable Sync for previously synced devices
For additional information, see Sync Firefox data and Disable Firefox Sync.