DioxusLabs/dioxus · error · anyhow::Error

Custom sign command failed with exit code

Error message

Custom sign command failed with exit code: {:?}

What it means

Raised in run_custom_sign_command (invoked from try_sign_windows) when a user-configured custom signing command — with `%1` placeholders already substituted with the binary path — completes but exits with a non-success status. This is an external tool failure: the user-supplied signing tool rejected the binary or its arguments, and the exit code identifies how it failed.

Solutions

1. The custom sign command failed. Check the command's exit code and output and fix the signing configuration.

When it happens

Trigger: Thrown at packages/cli/src/bundler/windows.rs:849 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of DioxusLabs/dioxus@24f6a829df (2026-08-23). Data as JSON: /api/errors/229fec1d3f10656d. Report an issue: GitHub.

Appendix: source

Thrown at packages/cli/src/bundler/windows.rs:849

/// Run a custom signing command. The `%1` placeholder in args is replaced
/// with the path to the binary to sign.
async fn run_custom_sign_command(path: &Path, cmd: &str, args: &[String]) -> Result<()> {
    let path_str = path.to_string_lossy();
    let resolved_args: Vec<String> = args
        .iter()
        .map(|arg| arg.replace("%1", &path_str))
        .collect();

    tracing::debug!("Running custom sign command: {} {:?}", cmd, resolved_args);

    let status = Command::new(cmd)
        .args(&resolved_args)
        .status()
        .await
        .with_context(|| format!("Failed to run custom sign command: {cmd}"))?;

    if !status.success() {
        bail!(
            "Custom sign command failed with exit code: {:?}",
            status.code()
        );
    }

    Ok(())
}

/// Run signtool.exe to sign a binary with a certificate thumbprint.
async fn run_signtool_sign(
    path: &Path,
    thumbprint: &str,
    settings: &WindowsSettings,
) -> Result<()> {
    let mut args = vec![
        "sign".to_string(),
        "/fd".to_string(),
        settings

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