Cannot start firefox browser instance for tests using Visual Studio, C#, Nunit and Selenium-CodePudding

I am having troubles trying to run simple UI test in Visual Studio (16.11.10) using C# and NUnit. I am using Selenium.Firefox.WebDriver version 0.27.0., Selenium.WebDriver and Selenium.Support both 4.1.0

Test:

using NUnit.Framework;
using OpenQA.Selenium;
using OpenQA.Selenium.Firefox;

namespace ClassLibrary2
{
    public class Class1
    {
        [Test]
        public static void TestBrowser()
        {
            IWebDriver driver = new FirefoxDriver();
            driver.Url = "https://login.yahoo.com/";
            driver.Quit();
        }

    }
}

Running this test I am getting such error:

 TestBrowser
   Source: Class1.cs line 10
   Duration: 4,6 sec

  Message: 
OpenQA.Selenium.WebDriverException : Cannot start the driver service on http://localhost:59898/

  Stack Trace: 
DriverService.Start()
DriverServiceCommandExecutor.Execute(Command commandToExecute)
WebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
WebDriver.StartSession(ICapabilities desiredCapabilities)
WebDriver.ctor(ICommandExecutor executor, ICapabilities capabilities)
FirefoxDriver.ctor(FirefoxDriverService service, FirefoxOptions options, TimeSpan commandTimeout)
FirefoxDriver.ctor(FirefoxOptions options)
FirefoxDriver.ctor()
Class1.TestBrowser() line 18

  Standard Output: 
Unable to connect to the remote server

All works fine using ChromeDriver. Thanks for your help.

CodePudding user response：

Possibly Selenium.Firefox.WebDriver version 0.27.0 points to the older GeckoDriver of version0.27.0. Hence you see the error.

The solution would be to upgrade to latest version of GeckoDriver i.e. version0.30.0