private static void showFailedAuthenticateProxy() {
    HttpConfigurable instance = HttpConfigurable.getInstance();
    String message = instance.USE_HTTP_PROXY || instance.USE_PROXY_PAC
                     ? message("popup.content.failed.to.authenticate.to.proxy.change.credentials")
                     : message("popup.content.failed.to.authenticate.to.proxy");

    PopupUtil.showBalloonForActiveComponent(message, MessageType.ERROR);
  }
private static void showFailedAuthenticateProxy()