You can only add a third-party authentication app or other two-factor authentication method if you already have access to your Facebook account. If you can't access your Facebook account, …

If you're having trouble logging into your Facebook account, review these tips first. If you've turned on two-factor authentication, there are several ways you can get your security code or approve …

How two-factor authentication works on Facebook Set up Facebook login recovery codes Get security code for two-factor authentication to log into Facebook Using an app for two-factor …

Steps to receive a code for two-factor authentication: Open the Facebook app and tap the menu icon. Tap Settings & privacy. Tap Code Generator. Use the code to log into Facebook. If you …

Troubleshoot login with two-factor authentication on Facebook Use a security key to log into your Facebook account How Facebook uses your mobile phone number for two-factor …

When two-factor authentication is turned on, you'll be asked to enter a special login code or confirm your login attempt each time someone tries to access your Facebook from a browser …

A third-party authentication app (such as Duo Mobile or Google Authenticator) can be used to generate login codes that help us confirm it's you when you log in from a new device for the …

If you suspect your account was hacked, visit www.facebook.com/hacked on a device you’ve used to log into Facebook before.

Select either Authentication app (such as Google Authenticator or Duo Mobile) or Text message (SMS), then click Next. Follow the on-screen instructions for your chosen option.

If you're having trouble logging into your Facebook account, review these tips first. When you turn on two-factor authentication, you're asked to choose either a security key, text message …