openai/codex · error · anyhow::Error

Windows sandbox is only available on Windows

Error message

Windows sandbox is only available on Windows

What it means

Error "Windows sandbox is only available on Windows" thrown in openai/codex.

Source

Thrown at codex-rs/cli/src/debug_sandbox.rs:336

    }

    // Special-case Windows sandbox: execute and exit the process to emulate inherited stdio.
    if let SandboxType::Windows = sandbox_type {
        #[cfg(target_os = "windows")]
        {
            run_command_under_windows_session(
                &config,
                &permission_profile,
                command,
                cwd,
                workspace_roots,
                env,
            )
            .await;
        }
        #[cfg(not(target_os = "windows"))]
        {
            anyhow::bail!("Windows sandbox is only available on Windows");
        }
    }

    #[cfg(target_os = "macos")]
    let mut denial_logger = log_denials.then(DenialLogger::new).flatten();
    #[cfg(not(target_os = "macos"))]
    let _ = log_denials;

    let managed_network_requirements_enabled = config.managed_network_requirements_enabled();

    // This proxy should only live for the lifetime of the child process.
    let network_proxy = match config.permissions.network.as_ref() {
        Some(spec) => Some(
            spec.start_proxy(
                &permission_profile,
                /*policy_decider*/ None,
                /*blocked_request_observer*/ None,
                managed_network_requirements_enabled,

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/cli/src/debug_sandbox.rs:336 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/28db3f950ebff576. Report an issue: GitHub.