failed to build managed network proxy from {source}: {err}

Error message

failed to build managed network proxy from {source}: {err}

What it means

Error "failed to build managed network proxy from {source}: {err}" thrown in openai/codex.

Source

Thrown at codex-rs/core/src/config/mod.rs:572

fn build_network_proxy_spec(
    configured_network_proxy_config: NetworkProxyConfig,
    network_requirements: Option<Sourced<codex_config::NetworkConstraints>>,
    permission_profile: &PermissionProfile,
) -> std::io::Result<Option<NetworkProxySpec>> {
    let (network_requirements, network_requirements_source) = match network_requirements {
        Some(Sourced { value, source }) => (Some(value), Some(source)),
        None => (None, None),
    };
    let has_network_requirements = network_requirements.is_some();
    let network = NetworkProxySpec::from_config_and_constraints(
        configured_network_proxy_config,
        network_requirements,
        permission_profile,
    )
    .map_err(|err| {
        if let Some(source) = network_requirements_source.as_ref() {
            std::io::Error::new(
                err.kind(),
                format!("failed to build managed network proxy from {source}: {err}"),
            )
        } else {
            err
        }
    })?;

    Ok(if has_network_requirements {
        Some(network)
    } else {
        network.enabled().then_some(network)
    })
}

/// Configured thread persistence backend.
#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub enum ThreadStoreConfig {

View on GitHub (pinned to 339751715c)

Solutions

Fix the managed network proxy settings from the reported source per the underlying error.

When it happens

Trigger: Thrown at codex-rs/core/src/config/mod.rs:572 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/739f65366437bc07. Report an issue: GitHub.