ChatGPT/Codex Windows app disappears after opening a Cloudflare-protected site in the built-in browser

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

26.721.41059

What subscription do you have?

ChatGPT Pro

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

The Codex Windows app appears to disappear from my system after I open the following Cloudflare-protected website inside Codex’s built-in browser:I installed the ChatGPT/Codex Windows app from the Microsoft Store. I opened Codex. I opened the built-in browser inside Codex. I opened a new tab and went to the URL above. The site shows a Cloudflare protection page. After that, the Codex/ChatGPT desktop app disappears or becomes unavailable. When I check the Microsoft Store, it no longer shows as installed; it shows Get or Restore instead of Open. Expected behavior. The Codex app should remain installed and continue running even when the built-in browser opens a Cloudflare-protected website. Actual behavior. The app disappears or becomes uninstalled/unavailable, and I have to restore or reinstall it from the Microsoft Store. Additional details. Codex app version: 26.721.41059.

Subscription: ChatGPT Pro. Installation source: Microsoft Store. Reliability Monitor shows successful Windows Update entries for package9PLM9XG6VKS-OpenAI.Codex

on July26,2026 at around 16:04, 23:03, and 23:12. Screenshots are attached.

<img width="1916" height="1021" alt="Image" src="https://github.com/user-attachments/assets/105c4675-6b55-4f48-96e3-d620b2bc1348" />

<img width="934" height="284" alt="Image" src="https://github.com/user-attachments/assets/42a30fb6-8275-4db7-9e78-154d39be664b" />

What steps can reproduce the bug?

1. Install the ChatGPT/Codex Windows app from the Microsoft Store.
2. Open the Codex app.
3. Open the built-in browser inside Codex.
4. Open a new tab. 5. Navigate to https://hostingdunyam.com.tr/ Wait for the Cloudflare protection page to appear.
5. After that, the Codex/ChatGPT desktop app disappears or becomes unavailable.
6. Open the Microsoft Store and search for the app again.
7. The Store shows "Al"/"Geri Yükle" instead of "Open".

What is the expected behavior?

The Codex app should remain installed and continue running normally when I open a Cloudflare-protected website in the built-in browser. The built-in browser should either load the page, show the Cloudflare check, or fail gracefully without causing the Codex/ChatGPT desktop app to disappear or become unavailable.

Additional information

I am not sure whether Cloudflare itself is the root cause, but the issue is triggered when I open this Cloudflare-protected website inside the Codex built-in browser. The app was installed from the Microsoft Store. After the issue occurs, the Microsoft Store no longer shows the app as installed and shows ‘Al’ / ‘Geri Yükle’ instead of ‘Aç’. Reliability Monitor shows successful Windows Update entries for package 9PLM9XG6VKS-OpenAI.Codex

on July 26 at around 16:04,23:03, and 23:12. I attached screenshots showing the Microsoft Store state and the Reliability Monitor entries.