openai/codex · error · ExecServerError

exec-server connection attempt failed: {0}

Error message

exec-server connection attempt failed: {0}

What it means

Error "exec-server connection attempt failed: {0}" thrown in openai/codex.

Source

Thrown at codex-rs/exec-server/src/client.rs:672

    #[error(
        "environment `{environment_id}` is already registered with a different provisioning mode"
    )]
    ProvisioningModeConflict { environment_id: String },
    #[error("exec-server rejected request ({code}): {message}")]
    Server { code: i64, message: String },
    #[error("environment registry request failed ({status}{code_suffix}): {message}", code_suffix = .code.as_ref().map(|code| format!(", {code}")).unwrap_or_default())]
    EnvironmentRegistryHttp {
        status: http::StatusCode,
        code: Option<String>,
        message: String,
    },
    #[error("environment registry configuration error: {0}")]
    EnvironmentRegistryConfig(String),
    #[error("environment registry authentication error: {0}")]
    EnvironmentRegistryAuth(String),
    #[error("environment registry request failed: {0}")]
    EnvironmentRegistryRequest(#[from] codex_http_client::RouteAwareRequestError),
    #[error("exec-server connection attempt failed: {0}")]
    ConnectionAttempt(#[source] Arc<ExecServerError>),
}

impl ExecServerClient {
    fn attach_environment_connection_state(
        &self,
        state_tx: watch::Sender<EnvironmentConnectionState>,
    ) {
        let mut connection = self
            .inner
            .connection
            .lock()
            .unwrap_or_else(std::sync::PoisonError::into_inner);
        connection.environment_connection_state_tx = state_tx;
        connection.publish_environment_connection_state();
    }

    fn fail_fast(&self) -> Result<Self, ExecServerError> {

View on GitHub (pinned to 339751715c)

Solutions

1. Check the exec-server address and retry the connection.

When it happens

Trigger: Thrown at codex-rs/exec-server/src/client.rs:672 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/10905ab362264247. Report an issue: GitHub.