c# web浏览器在试图登录查看电子邮件时随机冻结

我有一个c# Web浏览器，我试图访问:my.screenname.aol.com的邮件，但它甚至不会加载，我没有太多的代码…如您所见:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace EmailViewer
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            timer1.Enabled = true;
        }
        private void timer1_Tick(object sender, EventArgs e)
        {
            timer1.Enabled = false;
            webBrowser1.Navigate("my.screenname.aol.com");
        }
    }
}