Cannot Start The — Driver Service On Http Localhost Selenium Firefox C

🚀 Troubleshooting "Cannot start the driver service" in Selenium C#

// 1. Create the service var service = FirefoxDriverService.CreateDefaultService(); // 2. Optional: Suppress the command window black box service.HideCommandPromptWindow = true; 🚀 Troubleshooting "Cannot start the driver service" in

The Fix:

Open Task Manager (or use taskkill /f /im geckodriver.exe in CMD) and end all instances of geckodriver.exe and firefox.exe . 2. Verify the Driver Path 🚀 Troubleshooting "Cannot start the driver service" in

Incorrect:

new FirefoxDriver(@"C:\Program Files\Mozilla Firefox\firefox.exe") 🚀 Troubleshooting "Cannot start the driver service" in

gecko_path = r'C:\WebDrivers\geckodriver.exe'

Use the following pattern to ensure paths and timeouts are handled correctly:

exact error message

If you provide the and your OS + code snippet , I can give a more precise solution.