What version of the Codex App are you using (From “About Codex” dialog)?
26.616.3309.0
What subscription do you have?
ChatGPT Plus
What platform is your computer?
Windows x64
What issue are you seeing?
After updating to Codex Windows app 26.616.3309.0, Codex fails when launching the Windows native/elevated sandbox setup helper.
Windows shows an error dialog for:
C:\Program Files\WindowsApps\OpenAI.Codex_26.616.3309.0_x64__2p2nqsd0c76g0\app\resources\codex-windows-sandbox-setup.exe
The dialog message is:
The specified module could not be found.
In Chinese Windows, this appears as:
找不到指定的模块。
Codex reports the related error:
windows sandbox failed: orchestrator_helper_launch_canceled
ShellExecuteExW failed to launch setup helper: 1223
The issue appears when Codex uses apply_patch, for example when trying to delete a temporary file. Normal PowerShell commands, file reads, Node, Python, and npm tests still work.
I have already tried restarting Codex, restarting Windows, running workspace dependency diagnostics, resetting/reinstalling workspace dependencies, repairing Codex from Windows Settings, and fully uninstalling/reinstalling Codex. The issue still persists.
The executable exists at the path above and appears to have a valid OpenAI signature.
What steps can reproduce the bug?
Feedback ID: no-active-thread-019edc9c-474a-7f12-91ca-94e33521d229
What is the expected behavior?
Codex should be able to launch the Windows native/elevated sandbox setup helper successfully and complete apply_patch operations such as creating, modifying, or deleting files inside the workspace.
The sandbox setup helper should not show a Windows error dialog, and apply_patch should work normally in the current workspace.
Additional information
This started after updating Codex. I have seen another user report showing the same OpenAI.Codex_26.616.3309.0 path and the same codex-windows-sandbox-setup.exe error dialog.
This may be a regression in the latest Codex Windows app related to the Windows native/elevated sandbox setup helper.
I have not switched the sandbox setting to unelevated yet, because I wanted to report the default/native elevated sandbox failure first.
What version of the Codex App are you using (From “About Codex” dialog)?
26.616.3309.0
What subscription do you have?
ChatGPT Plus
What platform is your computer?
Windows x64
What issue are you seeing?
After updating to Codex Windows app 26.616.3309.0, Codex fails when launching the Windows native/elevated sandbox setup helper.
Windows shows an error dialog for:
C:\Program Files\WindowsApps\OpenAI.Codex_26.616.3309.0_x64__2p2nqsd0c76g0\app\resources\codex-windows-sandbox-setup.exe
The dialog message is:
The specified module could not be found.
In Chinese Windows, this appears as:
找不到指定的模块。
Codex reports the related error:
windows sandbox failed: orchestrator_helper_launch_canceled
ShellExecuteExW failed to launch setup helper: 1223
The issue appears when Codex uses apply_patch, for example when trying to delete a temporary file. Normal PowerShell commands, file reads, Node, Python, and npm tests still work.
I have already tried restarting Codex, restarting Windows, running workspace dependency diagnostics, resetting/reinstalling workspace dependencies, repairing Codex from Windows Settings, and fully uninstalling/reinstalling Codex. The issue still persists.
The executable exists at the path above and appears to have a valid OpenAI signature.
What steps can reproduce the bug?
Feedback ID: no-active-thread-019edc9c-474a-7f12-91ca-94e33521d229
What is the expected behavior?
Codex should be able to launch the Windows native/elevated sandbox setup helper successfully and complete apply_patch operations such as creating, modifying, or deleting files inside the workspace.
The sandbox setup helper should not show a Windows error dialog, and apply_patch should work normally in the current workspace.
Additional information
This started after updating Codex. I have seen another user report showing the same OpenAI.Codex_26.616.3309.0 path and the same codex-windows-sandbox-setup.exe error dialog.
This may be a regression in the latest Codex Windows app related to the Windows native/elevated sandbox setup helper.
I have not switched the sandbox setting to unelevated yet, because I wanted to report the default/native elevated sandbox failure first.