openai / openai/codex

Unable to complete Windows Setup

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#45,217 2 comments 0 reactions 0 assignees View on GitHub

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app bug sandbox windows-os
Dominant language
Rust
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Forks
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Description

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

26.908.4834.0.

What subscription do you have?

Plus

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

Windows setup fails after I approve the administrator prompt.

Error: helper_sandbox_lock_failed
Details: SetNamedSecurityInfoW sandbox dir failed: 5
Affected folder: C:\Users\karen.codex.sandbox-bin
App version: 26.908.4834.0

The app subsequently uses windows.sandbox = "unelevated". Restarting normally and opening as administrator do not restart setup. I need a supported way to repair and rerun Windows setup.

Image
What steps can reproduce the bug?

Feedback ID: 01a09a6d-88ef-72f2-a9dd-71cc80b6212a

What is the expected behavior?

Windows Setup to complete successfully.

Additional information

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Begin with the Windows Setup path that emits helper_sandbox_lock_failed and the affected .codex/.sandbox-bin folder; the report provides no source file or test entry point. Reproduce on Windows with the supplied app version and error details, then verify that a supported repair path lets setup complete and no longer leaves windows.sandbox set to unelevated.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
desktop, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
38/100

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