Shell Commands not working

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

26.311.21342

What subscription do you have?

Plus

What platform is your computer?

Microsoft Windows NT 10.0.26100.0 x64

What issue are you seeing?

Inside the Codex desktop app, every shell_command invocation fails immediately with exit code 1, even for trivial PowerShell commands.

What steps can reproduce the bug?

1. Open Codex desktop app on Windows.
2. Start a session in a local workspace.
3. Run any trivial shell command through the agent, for example:

• Write-Output 'ok'
• pwd
• Get-Location

1. Observe that the command fails immediately with exit code 1.
2. No stdout or stderr is returned.

What is the expected behavior?

Simple PowerShell commands should run successfully and return normal output.

Additional information

Environment at time of failure:

• Shell: PowerShell
• PowerShell version shown in terminal: 7.5.5
• Workspace path is inside OneDrive:

C:\Users\<user>\OneDrive - ...\Desktop\...\ihpAppEditor

The issue also reproduces when using:

• login: false
• explicit powershell -NoProfile -NonInteractive -Command ...
• file redirection / Out-File
• Get-Content after writing files