In terminal: geckodriver It should say Listening on http://0.0.0.0:4444 (or random port). If it crashes immediately, you have a version mismatch or corrupted binary.
driver = webdriver.Firefox(service=service) In terminal: geckodriver It should say Listening on http://0
Update Firefox to the latest version and download the corresponding GeckoDriver releases from GitHub . service.Port = 65432
var service = FirefoxDriverService.CreateDefaultService(); service.Port = 65432; // Use a different, non-standard port IWebDriver driver = new FirefoxDriver(service); Use code with caution. // Use a different