Why does Call of Duty ask me to add a phone number?

On PC, Activision requires text-message two-factor authentication from free-to-play players — anyone who does not own a Call of Duty title released in the last two years on that PC platform. That requirement is specifically SMS; the authenticator app is still worth adding, because it comes with backup codes and text-message codes do not.

Can I use Activision 2FA without a phone app?

Yes. Activision accepts third-party authenticator apps, and the Authenticator extension generates the same six-digit codes in Chrome on your computer.

What if I lose access to my authenticator?

At the code prompt, use a backup code or choose “Use Different Method” to get a code by email or text. Once in, disable the authenticator method and enable it again to set it up anew. If you have no other way in, contact Activision Support.

Why does Activision say my code is wrong?

Usually the computer clock is off by a minute or more — the codes refresh every 30 seconds and depend on the exact time. Turn on automatic date and time and try the next code. If it still fails, sign in with a backup code and set the authenticator up again.

Activision Authenticator App on PC — Call of Duty 2FA Setup

Your Activision account holds your Call of Duty progress, unlocks and purchases across platforms, and Activision now builds 2FA into it: accounts created from August 18, 2026 get email two-factor authentication that cannot be turned off. An authenticator app is faster and works without waiting for an email, and it comes with backup codes, which text-message codes do not.

Turn on the authenticator app for your Activision account

Activision can have several methods on at once — email, text messages and an authenticator app — with one set as primary. If it asks you to verify first, select “Send Code”, enter the six-character code from your email and select “Verify”.

Sign in to your Activision account on your computer.
Open the “Privacy & Security” tab and find the “Two-Factor Authentication” section.
Select “Enable” in the “Authenticator App” row, and verify by email if Activision asks.
Follow the on-screen instructions: when Activision shows a QR code, leave it on the screen and add it to the extension as described below.
Enter the six-digit code from the extension and your password, then select “Activate”.

Activision’s own instructions

Add Activision 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 Activision 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 Activision and type the current code into the confirmation field. If it is about to expire, wait for the next one.
Activision 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 Activision’s setup screen, copy the key, and add it in the extension with “Add Account” → “Manual” → “Secret Key”.

Get 2FA Authenticator for Chrome — free

Keep your ten Activision backup codes

When you turn on the authenticator app, Activision shows ten single-use backup codes and also emails them to you with the subject “Two-Factor Authentication Enabled”. Keep them somewhere other than this computer. To get ten new ones, open the “three dots” menu next to the authenticator app, choose “Disable Method”, and enable it again. To make the app your default, use “Set As Primary Method” in the same menu.

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

Why does Call of Duty ask me to add a phone number?: On PC, Activision requires text-message two-factor authentication from free-to-play players — anyone who does not own a Call of Duty title released in the last two years on that PC platform. That requirement is specifically SMS; the authenticator app is still worth adding, because it comes with backup codes and text-message codes do not.
Can I use Activision 2FA without a phone app?: Yes. Activision accepts third-party authenticator apps, and the Authenticator extension generates the same six-digit codes in Chrome on your computer.
What if I lose access to my authenticator?: At the code prompt, use a backup code or choose “Use Different Method” to get a code by email or text. Once in, disable the authenticator method and enable it again to set it up anew. If you have no other way in, contact Activision Support.
Why does Activision say my code is wrong?: Usually the computer clock is off by a minute or more — the codes refresh every 30 seconds and depend on the exact time. Turn on automatic date and time and try the next code. If it still fails, sign in with a backup code and set the authenticator 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.