What is 2FA in Twitter and How to fix Twitter 2FA not working
Two-factor authentication at Twitter adds an extra layer of security to your account, if you have enabled this authentication, you need to enter a code when you log in, this code you will receive via text message and you need to have an internet connection, However, one of the questions that has come up lately is How to fix Twitter 2FA not working, as many users do not receive the code even though they have a valid phone number.
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Twitter is not sending the 2FA code because it blocked a number 40404, the number 40404 comes from Twitter, so it must be unblocked to receive messages. According to what the Twitter team said in How to fix Twitter two-factor authentication not working, they are aware and are investigating the error that some people present to request and receive codes.
But if you keep wondering, How to fix Twitter 2FA not working, here are some solutions:
For the first method, unblock your contacts, in the case of iOS open the settings app, scroll down and select phone, then blocked contacts, tap on edit and the "-" icon on numbers 40404 or all numbers, then open Twitter and try to send the code again.
In the case of Android, open the phone application, click on the three dots icon and select settings followed by Blocked numbers, then select the "X" icon followed by unlock in numbers 40404 or in all numbers, finally open Twitter and try to send the code again.
In the second method, disable 2FA on a device that is currently connected to Twitter, to do so open Twitter on a device that is currently connected to Twitter, go to settings and support, then settings and privacy, select security and account access, then two-factor authentication and turn off text message, authenticator app, or Security Key.
As a last option you can contact Twitter support, for this you must go to https://help.twitter.com/en/forms/account-access/regain-access/2fa-problem, enter your username and email address of Twitter, describe the problem and submit the form to help you solve the problem.
This is all we can tell you about How to fix Twitter two-factor authentication not working.