Why isn’t my 2FA code working all of a sudden?

Two-factor authentication (2FA) — a security feature that requires a time-sensitive code from an authenticator app to log in — can stop generating valid codes when your device's clock falls out of sync. If your 2FA codes suddenly stopped working after you've set up two-factor authentication, a time sync issue is almost always the cause.

2FA systems use Coordinated Universal Time (UTC) — a global time standard — to generate and validate codes. Your device runs a time service to stay in sync with UTC. If that sync slips even slightly, your codes become invalid. Your device may fall out of sync because:

• You’ve manually configured the time on your device
• Your device has experienced clock drift — a gradual slipping of your device's internal clock away from the correct time

How to Fix Your 2FA Code

1. Open your device settings.
2. Find the Date & Time settings.
3. Enable automatic time. Follow the guide for your device:
   • Android: Set time, date & time zone
   • Apple: Change the date and time on iPhone

Troubleshoot Your Authenticator App

For more help, follow the guide for your authenticator app:

• Authy: My Token Code Doesn't Work
• Google Authenticator: Fix common issues with 2-Step Verification