c#中在RichTextBOX中打开超链接

运行后点击超链接报错
System.ComponentModel.Win32Exception
HResult=0x80004005
Message=系统找不到指定的文件。

有知道是什么情况吗
public partial class Form1 : Form
{

    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        richTextBox1.Multiline = true;
        richTextBox1.ScrollBars = RichTextBoxScrollBars.Vertical;
        richTextBox1.Text = "http://www.baidu.com";


      
    }

    private void richTextBox1_LinkClicked(object sender, LinkClickedEventArgs e)
    {
        System.Diagnostics.Process.Start("iexplore.exe",e.LinkText);
    }

    private void richTextBox1_TextChanged(object sender, EventArgs e)
    {

    }
}

private void richTextBox1_LinkClicked(object sender, LinkClickedEventArgs e)
    {
        ProcessStartInfo psi = new(e.LinkText);
        Process.Start(psi);
    }