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Player Can't Login to a Public CTF

Are Public Registrations Enabled?

You will need to make sure that you have enabled public registrations before players will be able to login to a Public CTF event. Please see the article titled Creating Private and Public CTF Competitions for instructions on setting up a Public CTF.

Are players signing up using the unique public CTF URL?

Make sure players use the correct URL for the Public CTF event. Please see the section titled Public CTF Environment for instructions on player registration using a Public CTF URL.

Browser Troubleshooting:

Browsers are often the cause of issues when logging in. We have detailed some preliminary steps that resolve most browser issues in our article titled Can't Login to Cyber Range Exercise Area Account.

Have a Question? Contact Support


  • Students: Please reach out to your CTF Admin or Instructor who can submit a ticket to our Support Team on your behalf.

  • Instructors: You can either email us at or submit a ticket with our Support Team.

If you experience any issues starting or viewing Cloud CTF in your web browser, please see the article titled Can't Launch Cloud CTF for helpful tips on resolving the matter.

We're here to help you. If you still have questions after reviewing the information above, please feel free to submit a ticket with our Support Team and we'll get back to you as soon as possible.