WinAppDriver初始化WindowsDriver时抛出System.InvalidOperationException异常

try
{
    var caps = new DesiredCapabilities();
    var counter = 0;

    while (proc != null && proc.MainWindowHandle.ToInt32() == 0 && counter < 30)
    {
        Thread.Sleep(500);
        counter++;
    }

    var AppPath = @"C:\Windows\System32\notepad.exe";
    caps.SetCapability("appTopLevelWindow", proc?.MainWindowHandle.ToInt64().ToString("x"));
    caps.SetCapability("ms:experimental-webdriver", true);
    caps.SetCapability("app", AppPath);


    var urlWithPort = WinappServerUrl + selectedPort;
    var url = new Uri(urlWithPort);
    var driver = new WindowsDriver<WindowsElement>(url, caps, TimeSpan.FromMinutes(5));

    Thread.Sleep(5000);
    driver.Manage().Window.Maximize();
    Thread.Sleep(1000);
    return driver;
}
catch (Exception ex)
{
    throw new Exception($"Failed in SetupWinAppDriver. Url={WinappServerUrl + selectedPort}, Exception = {ex}");
}

在上述代码中，WinAppDriver与记事本均已成功启动，但执行var driver = new WindowsDriver<WindowsElement>(url, caps, TimeSpan.FromMinutes(5));时抛出异常。

错误信息：

System.InvalidOperationException: 'An unknown error occurred in the remote end while processing the command.'

已尝试的解决方法：

• 开启Windows开发者模式
• 以管理员身份运行WinAppDriver

但问题仍未解决。

内容的提问来源于stack exchange，提问作者Ajimi Mol