Selenium Using Java - the Path to the Driver Executable Must Be Set by the Webdriver.Gecko.Driver System Property

Selenium using Java - The path to the driver executable must be set by the webdriver.gecko.driver system property

The Selenium client bindings will try to locate the geckodriver executable from the system PATH. You will need to add the directory containing the executable to the system path.

• On Unix systems you can do the following to append it to your system’s search path, if you’re using a bash-compatible shell:

  export PATH=$PATH:/path/to/geckodriver
  

• On Windows you need to update the Path system variable to add the full directory path to the executable. The principle is the same as on Unix.

All below configuration for launching latest firefox using any programming language binding is applicable for Selenium2 to enable Marionette explicitly. With Selenium 3.0 and later, you shouldn't need to do anything to use Marionette, as it's enabled by default.

To use Marionette in your tests you will need to update your desired capabilities to use it.

Java :

As exception is clearly saying you need to download latest geckodriver.exe from here and set downloaded geckodriver.exe path where it's exists in your computer as system property with with variable webdriver.gecko.driver before initiating marionette driver and launching firefox as below :-

//if you didn't update the Path system variable to add the full directory path to the executable as above mentioned then doing this directly through code
System.setProperty("webdriver.gecko.driver", "path/to/geckodriver.exe");

//Now you can Initialize marionette driver to launch firefox
DesiredCapabilities capabilities = DesiredCapabilities.firefox();
capabilities.setCapability("marionette", true);
WebDriver driver = new MarionetteDriver(capabilities); 

And for Selenium3 use as :-

WebDriver driver = new FirefoxDriver();

If you're still in trouble follow this link as well which would help you to solving your problem

.NET :

var driver = new FirefoxDriver(new FirefoxOptions());

Python :

from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities

caps = DesiredCapabilities.FIREFOX

# Tell the Python bindings to use Marionette.
# This will not be necessary in the future,
# when Selenium will auto-detect what remote end
# it is talking to.
caps["marionette"] = True

# Path to Firefox DevEdition or Nightly.
# Firefox 47 (stable) is currently not supported,
# and may give you a suboptimal experience.
#
# On Mac OS you must point to the binary executable
# inside the application package, such as
# /Applications/FirefoxNightly.app/Contents/MacOS/firefox-bin
caps["binary"] = "/usr/bin/firefox"

driver = webdriver.Firefox(capabilities=caps)

Ruby :

# Selenium 3 uses Marionette by default when firefox is specified
# Set Marionette in Selenium 2 by directly passing marionette: true
# You might need to specify an alternate path for the desired version of Firefox

Selenium::WebDriver::Firefox::Binary.path = "/path/to/firefox"
driver = Selenium::WebDriver.for :firefox, marionette: true

JavaScript (Node.js) :

const webdriver = require('selenium-webdriver');
const Capabilities = require('selenium-webdriver/lib/capabilities').Capabilities;

var capabilities = Capabilities.firefox();

// Tell the Node.js bindings to use Marionette.
// This will not be necessary in the future,
// when Selenium will auto-detect what remote end
// it is talking to.
capabilities.set('marionette', true);

var driver = new webdriver.Builder().withCapabilities(capabilities).build();

Using RemoteWebDriver

If you want to use RemoteWebDriver in any language, this will allow you to use Marionette in Selenium Grid.

Python:

caps = DesiredCapabilities.FIREFOX

# Tell the Python bindings to use Marionette.
# This will not be necessary in the future,
# when Selenium will auto-detect what remote end
# it is talking to.
caps["marionette"] = True

driver = webdriver.Firefox(capabilities=caps)

Ruby :

# Selenium 3 uses Marionette by default when firefox is specified
# Set Marionette in Selenium 2 by using the Capabilities class
# You might need to specify an alternate path for the desired version of Firefox

caps = Selenium::WebDriver::Remote::Capabilities.firefox marionette: true, firefox_binary: "/path/to/firefox"
driver = Selenium::WebDriver.for :remote, desired_capabilities: caps

Java :

DesiredCapabilities capabilities = DesiredCapabilities.firefox();

// Tell the Java bindings to use Marionette.
// This will not be necessary in the future,
// when Selenium will auto-detect what remote end
// it is talking to.
capabilities.setCapability("marionette", true);

WebDriver driver = new RemoteWebDriver(capabilities); 

.NET

DesiredCapabilities capabilities = DesiredCapabilities.Firefox();

// Tell the .NET bindings to use Marionette.
// This will not be necessary in the future,
// when Selenium will auto-detect what remote end
// it is talking to.
capabilities.SetCapability("marionette", true);

var driver = new RemoteWebDriver(capabilities); 

Note : Just like the other drivers available to Selenium from other browser vendors, Mozilla has released now an executable that will run alongside the browser. Follow this for more details.

You can download latest geckodriver executable to support latest firefox from here

java.lang.IllegalStateException: The path to the driver executable must be set by the webdriver.gecko.driver system property

You have to use System.setProperty not the System.getProperty as follows.

System.setProperty("webdriver.gecko.driver",
                "C:\\Selenium WebDriver\\geckodriver\\geckodriver-v0.17.0-win64\\geckodriver.exe");

ERROR : java.lang.IllegalStateException: The path to the driver executable must be set by the webdriver.gecko.driver system property;

Please check your browser version as well. because selenium 2.X not support firefox 47+ versions.

The path to the driver executable must be set by the webdriver.gecko.driver system property;

You need to use geckodriver to interact with Firefox since Selenium 3.0. Download geckodriver from github depending upon your OS and extract geckodriver.exe into a folder.

Add the following line before initializing WebDriver:

System.setProperty("webdriver.gecko.driver","c:/your/path/to/geckodriver.exe");
WebDriver driver = new FirefoxDriver();
...

java.lang.IllegalStateException: The path to the driver executable must be set by the webdriver.chrome.driver system property-The Similiar doesn't ans

It's the same issue as previous questions.
Please add the following lines to your code changing "C:\stack\overflow\chromeDriver.exe" to the absolute path of your chromedriver.exe in your device.

 System.setProperty("webdriver.chrome.driver", "C:\\stack\\overflow\\chromeDriver.exe");
 WebDriver driver = new ChromeDriver();

Please note absolute paths follow the standard used in the answer here:
How do I get the file name from a String containing the Absolute file path?

They require the double \ while windows will give you / if you copy the path from file explorer or similar. You need to replace each / with \ for things to work

This wouldn't be an issue if you had set up chromedriver as an system variable and pointed to your file. That is what my lines of code are doing.

The path to the driver executable must be set by the webdriver.gecko.driver system property

The way which worked for me was to clone sources from github by using GIT. Earlier i downloaded zip and it doesn't work, then I clone sources by sunig GIT and do all steps described here: http://shengwangi.blogspot.ru/2014/08/how-to-build-selenium-from-source.html, except "Download 3rd party library" step.

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