Fatal error: Class 'PHPMailer' not found in C:AppServwwwSolicitudesBEconexion.php on line 58

require_once('PHPMailer/PHPMailerAutoload.php');
                //require_once('PHPMailer/class.phpmailer.php');

                $mail = new PHPMailer;

                $mail->IsSMTP();
                //$mail->SMTPDebug = 2;
                $mail->SMTPAuth = false;
                $mail->SMTPSecure = "tls";
                $mail->Host = "correo.domain.org.mx";
                $mail->Port = 25;
                $mail->Username = "julio.castor@domain.mx";
                $mail->Password = "pass";
                $mail->SetFrom('correo@domain.com', 'Julio Castor');
                $mail->Subject = $asunto;

require_once(__DIR__ . '/PHPMailer/PHPMailerAutoload.php');

use PHPMailerPHPMailerPHPMailer;

require_once(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'PHPMailer' . DIRECTORY_SEPARATOR . 'PHPMailerAutoload.php');

require_once('PHPMailer/class.phpmailer.php');
require_once('PHPMailer/class.phpmaileroauth.php');
require_once('PHPMailer/class.phpmaileroauthgoogle.php');
require_once('PHPMailer/class.pop3.php');
require_once('PHPMailer/class.smtp.php');