Cannot Start The Driver Service On Http Localhost Selenium Firefox C Jun 2026

pip install --upgrade selenium

from selenium.webdriver.firefox.options import Options pip install --upgrade selenium from selenium

: Cannot start the driver service on http://localhost:XXXXX/ pip install --upgrade selenium from selenium

GeckoDriver and Firefox have a strict compatibility matrix. A very new Firefox version with an old GeckoDriver (or vice versa) will cause the service to fail. pip install --upgrade selenium from selenium

service = FirefoxDriverService.CreateDefaultService(@"C:\path\to\geckodriver\folder"); FirefoxDriver(service); Use code with caution. Copied to clipboard 4. Check Local Network/Hosts Settings The driver service needs to bind to