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Windows app 26.616.3767.0: elevated sandbox setup helper still fails with “The specified module could not be found” #29053
The specified module could not be found.
Chinese Windows: 找不到指定的模块。
What steps can reproduce the bug?
Feedback ID: 019ed527-cdcc-7363-8c3d-ef720e5a3a24
What is the expected behavior?
Open a normal local workspace in Codex Desktop on Windows.
Run a minimal workspace health check.
Normal PowerShell commands work.
Node and Python work.
Creating/deleting a temporary file with normal PowerShell works.
Use apply_patch to create a temporary file. This succeeds.
Use apply_patch to delete the same temporary file. This fails and triggers the Windows dialog.
Observed Codex error:
windows sandbox failed: orchestrator_helper_launch_canceled:
ShellExecuteExW failed to launch setup helper: 1223
Expected behavior:
Codex should be able to launch the Windows native/elevated sandbox setup helper successfully, and apply_patch should be able to create, modify, and delete files inside the current workspace without showing a Windows error dialog.
Actual behavior:
The helper launch/load still fails in Codex Windows app 26.616.3767.0. The file path points to the Microsoft Store app package under WindowsApps. The executable appears to exist, but Windows reports that a required module could not be found when Codex tries to launch the helper.
Additional information
This looks like the same elevated Windows sandbox helper problem reported for 26.616.3309.0, still reproducible after updating to 26.616.3767.0. It does not appear to be caused by Node, Python, PowerShell, or normal workspace file permissions, because those all work in the same workspace.
Windows Codex Desktop 26.825.4187.0
Every terminal/file/task operation fails before command execution:
orchestrator_helper_launch_failed
setup refresh failed to launch helper:
helper=codex-windows-sandbox-setup.exe
error=program not found
Reset and Repair did not resolve it.
Activity
CZH0919 commentedon Jun 19, 2026
github-actions commentedon Jun 19, 2026
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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zhaochen9137-dotcom commentedon Aug 28, 2026
Windows Codex Desktop 26.825.4187.0
Every terminal/file/task operation fails before command execution:
orchestrator_helper_launch_failed
setup refresh failed to launch helper:
helper=codex-windows-sandbox-setup.exe
error=program not found
Reset and Repair did not resolve it.