If your Microsoft Authenticator app is not working or displaying code for the accounts, then follow the suggestions to fix the issue using multiple methods.

If Two-factor authentication is not working in Discord on Windows, Re-setup two-factor authentication, Reset Authentication app, etc.

The Gadgets Now team is also experiencing the 2FA problem. What is two-factor authentication? Two-factor authentication is an extra layer of security for a social media account, including Twitter.

Are you experiencing the Nintendo verification code not working issue? Some Nintendo users have reported that the Nintendo Account 2-Step Verification Code is not working.

Google Authenticator can now sync single-use two-factor authentication codes to Google Accounts, for added convenience.