Cannot Start The Driver Service On Http Localhost Selenium Firefox C Access

using OpenQA.Selenium.Firefox; var service = FirefoxDriverService.CreateDefaultService(@"C:\Path\To\Your\geckodriver"); using (var driver = new FirefoxDriver(service)) driver.Navigate().GoToUrl("https://example.com"); Use code with caution. 2. Terminate Orphaned Geckodriver Processes

[2023-02-20 14:30:00] [INFO] Running on http://localhost:port [2023-02-20 14:30:00] [ERROR] Cannot start the driver service on http://localhost using OpenQA

Check the log file for specific error messages that indicate why the driver service failed to start. using System; using OpenQA

using System; using OpenQA.Selenium; using OpenQA.Selenium.Firefox; using WebDriverManager; using WebDriverManager.DriverConfigs.Impl; namespace SeleniumFirefoxSetup class Program static void Main(string[] sender) IWebDriver driver = null; try // 1. Resolve driver versioning automatically new DriverManager().SetUpDriver(new FirefoxConfig()); // 2. Configure the driver service to avoid localhost resolution bugs FirefoxDriverService service = FirefoxDriverService.CreateDefaultService(); service.Host = "127.0.0.1"; // 3. Define browser options FirefoxOptions options = new FirefoxOptions(); // options.AddArgument("--headless"); // Uncomment if running on a CI/CD server // 4. Initialize driver driver = new FirefoxDriver(service, options); // Execute Test driver.Navigate().GoToUrl("https://example.com"); Console.WriteLine("Title: " + driver.Title); catch (WebDriverException ex) Console.WriteLine($"Selenium Initialization Error: ex.Message"); finally // 5. Always quit the driver to release the ports and kill binaries if (driver != null) driver.Quit(); driver.Dispose(); Use code with caution. As Firefox updates

System-level proxies or active VPNs sometimes prevent Selenium from communicating with localhost .

Incompatibility between Firefox, GeckoDriver, and Selenium versions.

This is the of this error. As Firefox updates, it often requires a newer version of GeckoDriver.