Cannot Start The Driver Service On Http Localhost Selenium Firefox C //free\\ ❲ORIGINAL × Walkthrough❳

If you prefer the "old school" way or cannot use NuGet packages due to corporate restrictions, you are likely manually downloading geckodriver.exe . If you are doing this, the error usually stems from the fact that the FirefoxDriver class cannot locate the file.

If you absolutely need a specific port (e.g., for CI/CD or debugging), you can set it: If you prefer the "old school" way or

from selenium import webdriver from webdriver_manager.firefox import GeckoDriverManager It is almost always an environmental issue rooted

The error "cannot start the driver service on http://localhost" is rarely a bug in Selenium. It is almost always an environmental issue rooted in version mismatches, incorrect paths, or operating system restrictions. for CI/CD or debugging)

using (var driver = new FirefoxDriver(service, options, TimeSpan.FromSeconds(60)))

The GeckoDriver may be failing to bind to a random available port on localhost due to existing background processes or firewall restrictions.