codex - 💡(How to fix) Fix Windows - "Open project in Codex" fails for all folders

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

26.527.3686.0

What subscription do you have?

Plus

What platform is your computer?

Microsoft Windows NT 10.0.19045.0 x64

What issue are you seeing?

Environment:

• Windows
• Codex version: 26.527.3686.0
• Installation type: Microsoft Store (MSIX/AppX)

Problem: The Explorer context menu item "Open project in Codex" fails for any folder with the Windows error:

"Windows cannot access the specified device, path, or file."

Reproduction:

1. Right click any folder.
2. Select "Open project in Codex".
3. Error appears immediately.

Tested folders:

• C:\xampp8\htdocs\iqaistudio-web
• C:\PruebaCodex
• D:\PruebaCodex

Result: Fails for all folders.

Registry entry: HKEY_CLASSES_ROOT\Directory\shell\OpenProjectInCodex\command

Command: "C:\Program Files\WindowsApps\OpenAI.Codex_26.527.3686.0_x64__2p2nqsd0c76g0\app\Codex.exe" --open-project "%1"

Additional findings:

• Codex launches normally from Start Menu.
• Get-AppxPackage reports Status = Ok.
• AppID detected: OpenAI.Codex_2p2nqsd0c76g0!App
• Direct execution of: "C:\Program Files\WindowsApps...\Codex.exe" results in "Access denied".
• Explorer context menu appears to invoke the physical executable directly.
• App activation through AppID works.

Expected behavior: Selected folder should open as a project in Codex.

Actual behavior: Windows shows an access/path error and the project is not opened.

What steps can reproduce the bug?

1. Right click any folder.
2. Select "Open project in Codex".
3. Error appears immediately.

What is the expected behavior?

Selected folder should open as a project in Codex.

Additional information

No response