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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 this guide for instructions on setting up a Public CTF.

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. This guide has instructions on how to register using a Public CTF URL.

Browser Troubleshooting:

  • Instructors and Students: Browsers are often the cause of issues when logging in. We have detailed some preliminary steps that resolve most browser issues in our guide here.

Still having trouble? 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 check out this guide for details on submitting a ticket.