Cannot Start The Driver Service On Http Localhost Selenium Firefox C 🎯 Legit

Security software is blocking the driver's execution.

Ensure Firefox is updated to the latest stable release. 3. Configure Firewall Exceptions Security software is blocking the driver's execution

Ensure you aren't running an old version of GeckoDriver with a brand-new version of Firefox. driverService.Host = "127.0.0.1"

var driverService = FirefoxDriverService.CreateDefaultService(); driverService.Host = "127.0.0.1"; // Force IPv4 IWebDriver driver = new FirefoxDriver(driverService); Use code with caution. 2. Update Drivers and Browser Security software is blocking the driver's execution

Sometimes Selenium struggles to resolve the string "localhost." Forcing it to use the IPv4 loopback address often bypasses DNS or hostfile issues.