refers to your own computer ( 127.0.0.1 ). GeckoDriver opens a TCP port (e.g., 4444 , 57263 ) to listen for commands. If anything prevents GeckoDriver from starting that listener, you see the error.
To see exactly why the service failed, turn on debug logging for GeckoDriver: refers to your own computer ( 127
System.setProperty("webdriver.gecko.driver", "/path/to/geckodriver"); WebDriver driver = new FirefoxDriver(); driver.get("https://google.com"); driver.quit(); WebDriver driver = new FirefoxDriver()
from selenium.webdriver.firefox.service import Service refers to your own computer ( 127
: If the default port is blocked, you can manually assign a port using FirefoxDriverService.CreateDefaultService().Port = 9222 .
service = Service(executable_path='path/to/geckodriver', port=7055) # Classic Selenium port driver = webdriver.Firefox(service=service)
service = Service(executable_path='path/to/geckodriver') driver = webdriver.Firefox(service=service)