Codex Windows app from Microsoft Store crashes on launch with code 3221225781 after blank loading window

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

Unknown — app crashes on launch before I can open About Codex

What subscription do you have?

ChatGPT Plus

What platform is your computer?

Windows 11

What issue are you seeing?

Title:
Codex Windows app from Microsoft Store crashes on launch with code 3221225781 after blank loading window

Body:
I installed the Codex Windows app from Microsoft Store on Windows 11.

Behavior:

1. Codex opens a blank/gray loading window and stays there.
2. If I wait or close/reopen, I get this error:

Codex app-server exited unexpectedly (code=3221225781, signal=null)
Most recent error: None

What I already tried:

• Removed/renamed config.toml
• Reinstalled the app
• Reset the app from Windows settings
• Checked WebView2 runtime (installer says it is already installed)
• Reliability Monitor only shows successful Codex Store install/update entries
• The app still fails before it becomes usable

Notes:

• The error dialog mentions “extension”, but this is the Microsoft Store Windows app, not a VS Code extension.
• After Reset, the app briefly changed behavior: first a blank loading window appeared, then later the same crash returned.

System:

• Windows 11
• Codex installed from Microsoft Store

Please let me know what logs or diagnostics would help.

<img width="1139" height="1177" alt="Image" src="https://github.com/user-attachments/assets/e4371010-3fa9-4242-a9f7-6a2efcb16f72" />

What steps can reproduce the bug?

1. Install Codex from Microsoft Store on Windows 11.
2. Launch the app.
3. A blank/gray loading window appears and hangs.
4. After waiting or reopening, the app shows:

"Codex app-server exited unexpectedly (code=3221225781, signal=null)"

What is the expected behavior?

The Codex app should open normally and become usable instead of hanging on a blank window or crashing.

Additional information

I already tried:

• renaming/removing config.toml
• reinstalling the app
• resetting the app in Windows
• checking WebView2 (installer says it is already installed)

This is the Microsoft Store Windows app, not a VS Code extension.