Do I have to use Google Authenticator for my Nintendo Account?

No. Nintendo’s instructions name Google Authenticator, but Nintendo also accepts any similar authentication app — the QR code is the standard kind. The Authenticator extension reads it straight off the Nintendo Account page and produces the same six-digit codes in Chrome.

Can I set up Nintendo 2-Step Verification without a phone?

Yes. Setup happens on the Nintendo Account website, and all it needs is an app that produces the codes. With the extension, the whole thing — scanning the QR code, entering the code, saving backup codes — happens on your computer.

What if I lose access to my authenticator?

On the 2-Step Verification screen at sign-in, select “Use another method to verify your identity” and enter one of your 10 backup codes. Without them, the same link on the backup code screen sends a verification code to your email address instead — but only if you still know your password. Keeping the extension’s automatic backups on means a reinstall does not put you there.

Why does Nintendo say my code is wrong?

Usually the clock of the device that makes the codes is off — Nintendo’s own troubleshooting starts with syncing the time. Turn on automatic date and time on your computer and try the next code. If it still fails, sign in with a backup code, remove 2-Step Verification and set it up again.

Nintendo Account Authenticator App on PC — Set Up 2-Step Verification

Your Nintendo Account is what your Nintendo eShop purchases, your funds and your Nintendo Switch Online membership are tied to — on every console you sign in to. Nintendo describes 2-Step Verification as an extra layer that helps prevent unauthorized access: once it is on, a password alone no longer signs anyone in, because the six-digit code from your authenticator is needed too.

Turn on 2-Step Verification for your Nintendo Account

2-Step Verification is set up on the Nintendo Account website, and it is not available for child accounts whose age makes them subject to parental consent laws. Nintendo may ask you to confirm it is you first — with your password, a passkey, or a code sent to your email address.

Go to accounts.nintendo.com on your computer and sign in to your Nintendo Account.
Select “Sign-in and security settings”.
Scroll to “2-Step Verification”, select “Edit”, then click “2-Step Verification setup”.
Confirm your identity if Nintendo asks — with your password, a passkey or an email code.
Nintendo shows a QR code. Leave it on the screen and add it to the extension as described below — then enter the code from the extension in the “Verification code” field and select “Submit”.

Nintendo’s own instructions

Add Nintendo to Authenticator

Install 2FA Authenticator from the Chrome Web Store and pin it to the toolbar, so its icon is one click away.
Leave the Nintendo page with the QR code open. Click the Authenticator icon, then “Add Account” → “QR Code” → “Scan QR from screen”.
The account appears in the list with a six-digit code that changes every 30 seconds. Rename it if you like — the name is only for you.
Go back to Nintendo and type the current code into the confirmation field. If it is about to expire, wait for the next one.
Nintendo confirms that two-factor authentication is on. From now on it will ask for a code when you sign in — click the extension icon and copy it.

No QR code, or it will not scan? Look for the option to enter a key manually on Nintendo’s setup screen, copy the key, and add it in the extension with “Add Account” → “Manual” → “Secret Key”.

Get 2FA Authenticator for Chrome — free

Save your Nintendo backup codes

As soon as the code is accepted, Nintendo shows a list of 10 backup codes. Click “Copy” and paste them somewhere other than this computer — Nintendo requires a backup code to sign in when your authenticator is not available, and each works once. You can see them again, or generate new ones, under Sign-in and security settings → 2-Step Verification → “Review backup codes”.

The code is not accepted?

Almost always the computer’s clock. The codes are calculated from the current time, so a clock that is a minute off produces codes that look right and are refused. Turn on automatic date and time in your system settings — step-by-step for Windows, macOS and Linux.

If the clock is right, check the key itself: paste it into the TOTP code generator and compare the code with the one in the extension. If they differ, the key was copied wrong — add the account again.

Questions

Do I have to use Google Authenticator for my Nintendo Account?: No. Nintendo’s instructions name Google Authenticator, but Nintendo also accepts any similar authentication app — the QR code is the standard kind. The Authenticator extension reads it straight off the Nintendo Account page and produces the same six-digit codes in Chrome.
Can I set up Nintendo 2-Step Verification without a phone?: Yes. Setup happens on the Nintendo Account website, and all it needs is an app that produces the codes. With the extension, the whole thing — scanning the QR code, entering the code, saving backup codes — happens on your computer.
What if I lose access to my authenticator?: On the 2-Step Verification screen at sign-in, select “Use another method to verify your identity” and enter one of your 10 backup codes. Without them, the same link on the backup code screen sends a verification code to your email address instead — but only if you still know your password. Keeping the extension’s automatic backups on means a reinstall does not put you there.
Why does Nintendo say my code is wrong?: Usually the clock of the device that makes the codes is off — Nintendo’s own troubleshooting starts with syncing the time. Turn on automatic date and time on your computer and try the next code. If it still fails, sign in with a backup code, remove 2-Step Verification and set it up again.

Your codes, one click from the login page

Authenticator keeps your 2FA codes in the browser, on your device only — free, open source, no account and no phone needed. Local backups and optional password protection come built in.