"Authentication service 200 error login service has failed" - Error Code - The Elder Scrolls Online

Error 200 occurs when a player is unable to reach one of the game's megaservers. If you receive this error, you should try again in a few minutes. If you continue to receive this message after waiting, you should try the following troubleshooting steps:

  • Check our Service Alerts page for details about the status of the game.
  • Ensure that any anti-virus/firewall protection has exception rules for The Elder Scrolls Online.
  • Ensure the following ports are open on your modem / router:
    • TCP / UDP Ports 24100 through 24131
    • TCP / UDP Ports 24300 through 24331
    • TCP / UDP Ports 24500 through 24507
    • TCP Port 80
    • TCP Port 433

If you need help with performing these actions, have further questions, or have completed these steps and are still experiencing the issue, you should feel free to contact our Customer Support team for assistance.