You can browse with Firefox without creating an account. A Firefox Account is now called a Mozilla Account; the rename did not require existing users to open a new account. Create one when you want a shared sign-in to Mozilla services or want Firefox Sync to keep selected bookmarks, passwords, history, tabs, add-ons, and settings available on your other Firefox installations.
To register, open Mozilla’s account sign-up flow, enter an email address, password, and requested age, then confirm the six-digit code sent by email. Google and Apple sign-in are also available in eligible flows. After signing in to Firefox, choose which information Sync should copy between your devices.
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What a Firefox Account is called now
Mozilla renamed Firefox Accounts to Mozilla Accounts in 2023. Your existing account, password, synced data, and sign-in continue to work; the name change alone is not a reason to register again. You may still see “Firefox Account” in older articles or interfaces, but current Mozilla documentation uses “Mozilla Account.”
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- Firefox Sync: synchronizes selected Firefox data between signed-in browsers.
- Firefox Add-ons: lets you use the Mozilla add-ons service with your account.
- Mozilla Support: provides account-based access to support features.
- Mozilla Monitor: is available through the same Mozilla sign-in.
Signing up does not create a subscription or make Firefox paid. It is an optional account layer on top of the browser. You can continue to use Firefox locally, including ordinary browsing, without sending browser data to an account.
Do you need a Mozilla Account to use Firefox?
No. Firefox works for ordinary browsing, extensions, bookmarks stored on one device, and local settings without an account. An account becomes useful when you need one of these outcomes:
- Move selected Firefox data between a computer, phone, or tablet.
- Keep bookmarks, saved logins, open tabs, history, add-ons, or settings aligned across Firefox installations.
- Use several Mozilla services with one sign-in.
- Add account-level security features such as two-step authentication or passkeys.
If you use only one Firefox installation and do not need Mozilla’s account services, there is no functional requirement to register. If you do create an account, Sync remains under your control: you select the categories to synchronize rather than automatically sending every browser detail.
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How to create a Mozilla Account
Mozilla’s support instructions, updated July 31, 2026, describe the standard email process below. The wording of buttons can vary slightly depending on whether you start from a Mozilla service or directly from the account page.
- Open a Mozilla sign-in page. Start from Firefox’s account sign-in flow or a Mozilla service that offers account access, then choose the option to create an account.
- Enter your email address. Mozilla’s current instruction is to enter the address and select Sign up or sign in. Use an inbox you can access because confirmation is sent there.
- Create a password and provide your age. Enter a password and the requested age information, then submit the registration. Mozilla says the age question helps it meet the requirements of the U.S. Children’s Online Privacy Protection Rule.
- Retrieve the confirmation message. Check the inbox for Mozilla’s six-digit confirmation code. Also check spam or filtered mail if it does not appear promptly.
- Enter the six-digit code. Submit the code in the sign-up window. Once the code is accepted, the email address is confirmed and the account can be used to sign in.
- Sign in to Firefox if Sync is your goal. Account creation by itself does not decide what your browser synchronizes. Sign in from Firefox and review the Sync choices before enabling them.
Other ways to register or sign in
Mozilla documents registration with an existing Google or Apple identity in supported sign-in flows. Some services and accounts also offer passkeys or a one-time email code. These alternatives are not guaranteed to appear for every account, country, browser, or Mozilla service, so use the method displayed on your sign-in screen.
A third-party identity or passkey can simplify authentication, but it does not remove the password requirement for Firefox Sync. Mozilla’s documentation explains that Sync’s encrypted data model still requires the Mozilla Account password, even when you use a passkey or an eligible Google or Apple sign-in for other account access.
What happens after registration
After email confirmation, your Mozilla Account is ready for the services available to your account. Open Firefox on each device where you want shared data, sign in with the account, and review the Sync controls. Firefox enables Sync through that sign-in flow; you can then choose the information types to share.
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Keep your account email current and protect the password. The password is more than a login secret for Sync: it is part of the key material that allows another Firefox instance to decrypt the synchronized information. A sign-in on Mozilla Support or another web service does not automatically turn on Sync in every browser profile; each Firefox installation must be signed in and configured.
How to set up Firefox Sync
- Open Firefox’s account controls. From the browser toolbar or menu, choose the sign-in option for your Mozilla Account.
- Sign in or create the account. Complete the email confirmation or the alternative authentication method offered to you.
- Open the Sync choices. Firefox presents the categories it can synchronize. Review each category instead of accepting settings without checking them.
- Select only the data you want shared. Turn categories on or off according to your privacy and convenience needs.
- Repeat on your other Firefox devices. Sign in to the same account on each installation and use the same Sync controls.
Mozilla lists these Sync categories:
| Category | What synchronization can provide |
|---|---|
| Bookmarks | Access to saved sites from each signed-in Firefox installation. |
| Logins and passwords | Saved sign-in credentials available in Firefox on other signed-in devices. |
| History | Relevant browsing history shared between participating Firefox installations. |
| Open tabs | Access to tabs left open on another signed-in Firefox device. |
| Add-ons | Compatible installed add-ons and related choices shared through Sync. |
| Settings | Selected Firefox preferences shared between installations. |
Sync availability can be limited in some locations by local regulations, network restrictions, or compliance requirements. If a category or the Sync service is missing, the limitation may be regional rather than a problem with your browser.
Decide what to sync before adding more devices
Sync is most useful when its categories match how you work. For example, selecting bookmarks and open tabs can make a desktop-to-phone workflow convenient, while leaving history off may better fit a shared or managed computer. Selecting logins and passwords means those credentials become available in every participating Firefox installation, so only sign in on devices you trust. You can revisit the category controls later; changing them lets you adjust what future participating browsers receive.
Why Sync encryption matters
Mozilla Support says Sync data is encrypted before it leaves the browser and can be decrypted only by another Firefox instance. This is end-to-end encryption: the browser protects the data before transmission, and a signed-in Firefox browser performs the decryption.
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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteThat design explains an important recovery trade-off. Mozilla cannot simply give you a replacement Sync decryption key after a password reset. The account password is needed to use the encrypted Sync data, even if you normally sign in to other Mozilla services with a passkey or third-party authentication.
Protect Sync with an account recovery key
Before you forget your password, generate an account recovery key from your Mozilla Account security controls and store it somewhere safe. A password manager or another protected offline record can be appropriate; do not leave the only copy in the Firefox profile whose access you are trying to recover.
Mozilla’s recovery documentation warns that resetting a forgotten password without an account recovery key can erase the encrypted data stored for Sync. The reset may restore access to the account, but previously encrypted Sync information can be lost because the new password cannot decrypt it. The recovery key is therefore different from an ordinary sign-in backup: it protects the data encryption relationship itself.
Make the recovery key part of your initial setup rather than waiting for a forgotten password. Store it separately from two-step backup codes and label which Mozilla Account it belongs to. A code that gets you through a two-step prompt is not a substitute for the key that protects encrypted Sync data.
Turn on two-step authentication without creating a lockout
Two-step authentication adds an authenticator-generated code after the password or other first sign-in step. Mozilla requires you to set a recovery method when enabling it. Complete that recovery step before relying on two-step authentication for everyday access.
Backup authentication codes
Mozilla provides one-time backup authentication codes. Save them in a secure place, preferably in a password manager or a protected offline record, and keep them available when your authenticator device is unavailable. Each code is intended for one use, so replace the set if you use or regenerate it. Do not store the only copy inside an account or device that the two-step challenge could prevent you from opening.
Recovery phone
Mozilla describes recovery phone as an experimental, progressive rollout rather than a universally available feature. Its instructions identify initial availability in the United States and Canada, so the option may not appear for your account or location. A phone can be convenient, but SMS and SIM-swap attacks create risks; it is an optional recovery route, not automatically stronger than saved backup codes.
What happens if you lose the authenticator
If you lose the authenticator and have neither saved backup codes nor an available recovery phone, you can be locked out. Set up and test at least one recovery method while you still have access to the account. Keep the recovery key for encrypted Sync separately, because two-step backup codes restore sign-in while the recovery key addresses encrypted Sync data after a password reset.
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Passkeys and hardware security keys
Mozilla supports passkeys for account sign-in. Depending on the device, a passkey can use a fingerprint, face recognition, a device PIN, or a physical hardware security key. Passkeys can reduce exposure to phishing because the credential is tied to the approved device or key.
Mozilla still recommends keeping a recovery method even when you use a passkey. Register passkeys on multiple trusted devices or add a hardware security key as a backup if that fits your risk tolerance. You do not need to purchase a security key to create a Mozilla Account or use basic Sync; it is an optional physical authenticator. If you register only one passkey and then lose that device, the additional recovery method is what prevents an avoidable lockout.
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Choosing a sign-in method
| Method | Practical advantage | Important limitation or recovery consideration |
|---|---|---|
| Email and password | Works as the standard account credential and is broadly available. | Protect the password and create an account recovery key before a reset is needed. |
| Google or Apple authentication | Uses an eligible existing identity and can reduce another password to remember. | Firefox Sync still requires the Mozilla Account password because of its encrypted data model. |
| Passkey | Can authenticate with a fingerprint, face scan, PIN, or hardware security key. | Keep another recovery method and register more than one trusted passkey where possible. |
| One-time email code | Can avoid entering a password in sign-in flows that offer it. | Availability depends on the service and account eligibility; it does not replace the password needed for Sync. |
For account recovery, authenticator apps and backup codes avoid dependence on mobile networks. A recovery phone can be easier to use but carries interception and SIM-swap concerns. Multiple registered passkeys protect against losing one device, while an account recovery key protects the encrypted Sync data after a password reset. These solve different failure scenarios, so one should not be treated as a substitute for all the others.
Common problems and fixes
The confirmation email did not arrive
- Check spam, promotions, and quarantine folders.
- Confirm that the address entered during registration is correct.
- Wait briefly and request another code only through the current Mozilla sign-in flow.
- If a managed network blocks the message or account service, try a permitted network or contact the network administrator.
The six-digit code is rejected
Use the newest message if you requested more than one code; an earlier code may no longer be the active one. Enter the digits exactly as displayed and return to the same sign-up window rather than starting several parallel registrations. If the address was mistyped, restart with the correct inbox instead of trying to confirm a different address.
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- Confirm that you signed in to Firefox itself, not only to a separate Mozilla web page.
- Open the Sync controls and verify that at least one data category is selected.
- Check whether local regulations, network restrictions, or compliance rules limit Sync in your location.
- Remember that a passkey or Google/Apple sign-in for other services does not eliminate the Mozilla Account password requirement for Sync.
You forgot the password
Use Mozilla’s password-reset process, but first determine whether you have an account recovery key. Mozilla warns that resetting without that key can erase encrypted Sync data. If preserving synced passwords, bookmarks, or other categories matters, locate the recovery key before completing a reset.
You lost access to two-step authentication
Use a saved backup authentication code or an available recovery phone if your account has that option. Without either a recovery method or another registered passkey, access may not be recoverable through the normal two-step flow.
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- Use an email inbox you can reliably access.
- Create a unique, strong Mozilla Account password.
- Confirm the six-digit email code.
- Choose Sync categories deliberately rather than enabling everything automatically.
- Generate and safely store an account recovery key.
- Enable two-step authentication only after saving backup codes or configuring another recovery method.
- Register a second trusted passkey or consider a hardware security key if you depend on passkeys.
- Review the same settings on every Firefox device you sign in.
- Before signing in on a shared or managed device, decide whether that device should receive passwords, history, or open tabs.
Bottom line: when an account is worth creating
A Mozilla Account is optional for Firefox browsing but valuable for people who use more than one Firefox installation or want Mozilla’s connected services. The strongest reason to create one is Sync, which can share selected browser data while encrypting it end to end. Set up recovery before you need it: the password protects Sync access, the recovery key protects encrypted Sync data after a reset, and two-step backup methods protect the sign-in itself.
Frequently Asked Questions
How do I sign up for a Mozilla account?
Open a Mozilla service sign-in page or Mozilla’s account signup flow, enter your email address, and choose “Sign up or sign in.” Enter a password and the requested age, then enter the six-digit code Mozilla sends to your email. Google or Apple registration may also be offered.
Do I need a Mozilla Account just to browse with Firefox?
No. Browsing, local bookmarks, extensions, and settings work without an account. An account is useful for Firefox Sync and shared access to Mozilla services.
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What services can I use with a Mozilla account?
Mozilla lists Firefox Sync, Firefox Add-ons, Mozilla Support, and Mozilla Monitor among the services available through the shared sign-in. Availability can vary by account and location.
How do I set up Sync in Firefox?
Sign in to the Mozilla Account from Firefox’s toolbar or menu, open the Sync controls, choose the categories you want, and repeat the sign-in and selection on each Firefox device. Categories include bookmarks, logins and passwords, history, open tabs, add-ons, and settings.
Is Firefox Sync end-to-end encrypted?
Yes. Mozilla Support says Sync data is encrypted before it leaves the browser and can be decrypted only by another Firefox instance. The Mozilla Account password is required for that encrypted Sync data.
What happens if I reset my password without a recovery key?
Mozilla warns that a password reset without an account recovery key can erase encrypted data stored for Sync. Create and safely store the recovery key before you need to reset the password.
Can I use a passkey or Google sign-in for Sync?
Those methods may sign you in to eligible Mozilla services, but Firefox Sync still requires the Mozilla Account password because of its encrypted data model.
Is a recovery phone required for two-step authentication?
Mozilla requires a recovery method, but recovery phone is an experimental, progressive rollout and is not available to everyone. One-time backup authentication codes are another option. SMS recovery also carries interception and SIM-swap risks.
Do I need to buy a hardware security key?
No. A hardware security key is an optional passkey authenticator and backup. You can create an account and use basic Sync without purchasing one.
Why is my Sync option missing?
Check that you signed in to Firefox itself and selected at least one Sync category. Sync or particular categories may also be limited by local regulations, network restrictions, or compliance requirements in your location.
The Bottom Line
You do not need an account to use Firefox. Create a Mozilla Account when cross-device Sync or Mozilla’s connected services will save you time, then choose data categories carefully and prepare both kinds of recovery: an account recovery key for encrypted Sync data and backup methods for two-step sign-in.
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