Desktop Login Facebook
If you manage multiple pages or have logged in previously, Facebook’s desktop interface often shows a prompt on the bottom left. This is a one-click login for returning users.
If you have enabled 2FA, after entering your password, Facebook will ask for a security code from your authenticator app (e.g., Google Authenticator) or SMS. On a trusted personal desktop, you can check to avoid re-entering the code for 30 days. desktop login facebook