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Can't Login to a Public CTF

Are Public Registrations Enabled?

  • Instructors: You will need to make sure that you have enabled public registrations before your students will be able to login to a Public CTF event. Please see the section titled How to Setup a Public CTF Competition for further information.

Are you signing up using the unique public CTF URL?

  • Students: Make sure to use the URL provided by your instructor to register for the Public CTF event. Please see the article titled Public CTF Environment for instructions on this process.

Browser Troubleshooting

  • Instructors and Students: Browsers are often the cause of issues when logging in. We recommend that you try the steps listed in the article titled Can't Launch CloudCTF.

Have a Question? Contact Support

  • Students: Please reach out to your CTF admin who can submit a ticket to our Support team on your behalf.
  • Instructors: You can either email us at or you can review our guide on Submitting a Ticket via Console.