Cannot Start The Driver Service On Http Localhost Selenium Firefox C [updated] Official

Selenium needs to know exactly where your geckodriver.exe lives. If it can't find it, it can't start the service. Explicitly point to the driver in your C# code:

from selenium import webdriver from selenium.webdriver.firefox.service import Service from selenium.webdriver.firefox.options import Options Selenium needs to know exactly where your geckodriver

var options = new FirefoxOptions(); options.AddArgument("--headless"); // optional for CI use PyVirtualDisplay in Python:

— a brute-force but effective way to clear all stale processes. Selenium needs to know exactly where your geckodriver

Or, use PyVirtualDisplay in Python: