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Windows/CodexSandboxUser isses #29114

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Description

@revtechtravels

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

Version 26.611.62324

What subscription do you have?

Pro

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

Codex Desktop on Windows cannot run commands. Every command fails with windows sandbox: runner error: CreateProcessAsUserW failed: 5. Windows Sandbox launches successfully. Smart App Control is off. Codex has been reset and reinstalled. CodexSandboxOnline and CodexSandboxOffline are enabled and both belong to CodexSandboxUsers and Users. Local Security Policy grants Codex sandbox users logon-as-batch, replace-process-token, and adjust-memory-quota rights. Deny batch logon is empty; deny local logon only contains Guest. Defender and CodeIntegrity do not show a current obvious block.

What steps can reproduce the bug?

Feedback ID: 019e4cc1-8fbf-7b33-b51c-df06862d66f1

What is the expected behavior?

Codex agent should run the typical LLM Wiki update process

Additional information

No response

Activity

  1. added
    bugSomething isn't working
    windows-osIssues related to Codex on Windows systems
    sandboxIssues related to permissions or sandboxing
    on Jun 19, 2026
  2. github-actions commented on Jun 19, 2026

    @github-actions
    Contributor
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    appIssues related to the Codex desktop appbugSomething isn't workingsandboxIssues related to permissions or sandboxingwindows-osIssues related to Codex on Windows systems

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