ChatGPT for Windows cannot complete setup or enter limited-access mode

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

26.715.3651.0

What subscription do you have?

’m unable to use the ChatGPT desktop app on Windows because it is stuck on the “Complete Windows setup” screen.

What platform is your computer?

x64

What issue are you seeing?

<img width="1090" height="760" alt="Image" src="https://github.com/user-attachments/assets/35897238-480c-49bb-bc1b-3308440fe9a0" />

I’m unable to use the ChatGPT desktop app on Windows because it is stuck on the “Complete Windows setup” screen.

Environment:

• OS: Windows 10 Pro, version 22H2 / build 19045.6466
• ChatGPT Windows package: OpenAI.Codex
• Current installed version: 26.715.3651.0
• Package name: OpenAI.Codex_26.715.3651.0_x64__2p2nqsd0c76g0

Problem:

1. The app opens to “Complete Windows setup.”
2. Clicking “Retry Windows setup” does not complete the setup.
3. The UAC/administrator setup flow does not resolve the issue.
4. Clicking “Continue with limited access” also does not enter the main ChatGPT interface; the app remains unusable on the

setup screen.

1. I uninstalled and reinstalled the app, and the issue persists even with the newer installed version.

Relevant diagnostic information:

• The app package status is reported as Ok.
• Windows Defender Firewall and Base Filtering Engine services are running.
• An existing sandbox setup log contains this error:

text
helper_firewall_rule_create_or_add_failed:
SetRemotePorts failed:
HRESULT(0x80070057) / The parameter is incorrect

This appears to occur while the app attempts to configure the Windows sandbox/firewall rules required for local agent
functionality.

Expected behavior:

• The setup should complete successfully after administrator approval; or
• “Continue with limited access” should open the normal ChatGPT interface without requiring the local sandbox.

Actual behavior:

• Neither path allows access to the ChatGPT app.

I have attached a screenshot of the setup screen. Please advise whether this is a known Windows 10 compatibility issue or
provide a supported repair/workaround that does not require deleting local user data.

What steps can reproduce the bug?

ChatGPT for Windows cannot complete setup or enter limited-access mode

What is the expected behavior?

_No response_

Additional information

_No response_