openai/codex · error · SetupFailure

HelperSetupMarkerWriteFailed

HelperSetupMarkerWriteFailed

Error message

remove setup marker file {} failed: {err}

What it means

Error "remove setup marker file {} failed: {err}" thrown in openai/codex.

Source

Thrown at codex-rs/windows-sandbox-rs/src/bin/setup_main/win/sandbox_users.rs:474

                "write sandbox users file {} failed: {err}",
                users_path.display()
            ),
        ))
    })?;
    Ok(())
}

// Create the final marker path with its protected ACL before provisioning begins. The empty file
// intentionally fails readiness checks while setup is in progress, and sandbox users cannot read,
// modify, or replace it. Once every setup step succeeds, `commit_setup_marker` writes the valid
// marker contents without changing the file's ACL.
pub(super) fn prepare_setup_marker(codex_home: &Path, real_user: &str) -> Result<()> {
    let marker_path = sandbox_dir(codex_home).join("setup_marker.json");
    match std::fs::remove_file(&marker_path) {
        Ok(()) => {}
        Err(err) if err.kind() == std::io::ErrorKind::NotFound => {}
        Err(err) => {
            return Err(anyhow::Error::new(SetupFailure::new(
                SetupErrorCode::HelperSetupMarkerWriteFailed,
                format!(
                    "remove setup marker file {} failed: {err}",
                    marker_path.display()
                ),
            )));
        }
    }

    let real_user_sid = resolve_sid(real_user)
        .and_then(|sid| string_from_sid_bytes(&sid).map_err(anyhow::Error::msg))
        .map_err(|err| {
            anyhow::Error::new(SetupFailure::new(
                SetupErrorCode::HelperSetupMarkerWriteFailed,
                format!("resolve real user SID for setup marker failed: {err}"),
            ))
        })?;
    let sddl = to_wide(format!(

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/windows-sandbox-rs/src/bin/setup_main/win/sandbox_users.rs:474 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/3b7ab91d9d5aec28. Report an issue: GitHub.