Remote Control fails with error " couldn't check security requirements " due to Cloudflare-HTML-challenge

What version of the Codex App are you using (From “About Codex” dialog)?

Version 26.623.101652 - Released Jul 3, 2026

What subscription do you have?

Currently ChatGPT Plus, open for sponsored Pro Subscription by the way 😌

What platform is your computer?

Microsoft Windows NT 10.0.19044.0 x64

What issue are you seeing?

Codex Desktop cannot start remote control. The UI shows:
"couldn't check security requirements"
<img width="460" height="226" alt="Image" src="https://github.com/user-attachments/assets/9d8176dd-5b58-4143-8d25-8124f5aa53a0" />

What steps can reproduce the bug?

<img width="868" height="867" alt="Image" src="https://github.com/user-attachments/assets/0bac93a7-4477-46f8-bce8-97a51f43be29" />

What is the expected behavior?

_No response_

Additional information

Codex starts the remote-control security check successfully:

remoteControl/status/read -> success
configRequirements/read -> success

It then checks whether remote control requires MFA, and that request succeeds:

GET /backend-api/wham/remote/control/mfa_requirement
status=200

GET /backend-api/accounts/mfa_info
status=403

The response is a Cloudflare HTML-challenge.
("Enable JavaScript and cookies to continue")