title: org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1 while executing code using GeckoDriver and Firefox
body: <p>Code Trials :</p>
  
  <pre><code>public class loginmethod { 
  
      @Test 
      public void login() throws InterruptedException { 
          System.setProperty("webdriver.gecko.driver", "D:\\Tools\\geckodriver"); 
          WebDriver driver = new FirefoxDriver(); 
          driver.manage().window().maximize(); 
          driver.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);
      }
  }
  </code></pre>
  
  <p>Binary Version Details :</p>
  
  <ul>
  <li>FireFox : 60.0 </li>
  <li>Selenium Jar : 2.45 </li>
  <li>GeckoDriver : 20.1</li>
  </ul>
  
  <p>When I run code using Firefox driver following error is given:</p>
  
  <pre><code>org.openqa.selenium.firefox.NotConnectedException: Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
   Potential driver version mismatch ignored due to missing DLLs igd10umd64 v= and igd10iumd64 v=
  *** Blocklist::_preloadBlocklistFile: blocklist is disabled
  1526302485156   addons.xpi-utils    DEBUG   Starting async load of XPI database 
  1526302485236   addons.xpi  DEBUG   Ignoring file entry whose name is not a valid add-on QA\AppData\Local\Temp\anonymous5274473150250365422webdriver-profile\extensions\webdriver-staging
  1526302485236   addons.xpi  DEBUG   Existing add-on fxdriver@googlecode.com in app-profile
  1526302485236   addons.xpi  INFO    Mapping activity-stream@mozilla.org to C:\Program Files\Mozilla Firefox\browser\features\activity-stream@mozilla.org.xpi
  1526302485236   addons.xpi  INFO    Mapping aushelper@mozilla.org to C:\Program Files\Mozilla Firefox\browser\features\aushelper@mozilla.org.xpi
  1526302485236   addons.xpi  INFO    Mapping firefox@getpocket.com to C:\Program Files\Mozilla Firefox\browser\features\firefox@getpocket.com.xpi
  1526302485236   addons.xpi  INFO    Mapping followonsearch@mozilla.com to C:\Program Files\Mozilla Firefox\browser\features\followonsearch@mozilla.com.xpi
  1526302485236   addons.xpi  INFO    Mapping formautofill@mozilla.org to C:\Program Files\Mozilla Firefox\browser\features\formautofill@mozilla.org.xpi
  1526302485236   addons.xpi  INFO    Mapping onboarding@mozilla.org to C:\Program Files\Mozilla Firefox\browser\features\onboarding@mozilla.org.xpi
  1526302485236   addons.xpi  INFO    Mapping screenshots@mozilla.org to C:\Program Files\Mozilla Firefox\browser\features\screenshots@mozilla.org.xpi
  1526302485236   addons.xpi  INFO    Mapping shield-recipe-client@mozilla.org to C:\Program Files\Mozilla Firefox\browser\features\shield-recipe-client@mozilla.org.xpi
  1526302485236   addons.xpi  INFO    Mapping webcompat@mozilla.org to C:\Program Files\Mozilla Firefox\browser\features\webcompat@mozilla.org.xpi
  1526302485236   addons.xpi  DEBUG   Existing add-on activity-stream@mozilla.org in app-system-defaults
  1526302485236   addons.xpi  DEBUG   Existing add-on aushelper@mozilla.org in app-system-defaults
  1526302485236   addons.xpi  DEBUG   Existing add-on firefox@getpocket.com in app-system-defaults
  1526302485236   addons.xpi  DEBUG   Existing add-on followonsearch@mozilla.com in app-system-defaults
  1526302485236   addons.xpi  DEBUG   Existing add-on formautofill@mozilla.org in app-system-defaults
  1526302485238   addons.xpi  DEBUG   Existing add-on onboarding@mozilla.org in app-system-defaults
  1526302485238   addons.xpi  DEBUG   Existing add-on screenshots@mozilla.org in app-system-defaults
  1526302485238   addons.xpi  DEBUG   Existing add-on shield-recipe-client@mozilla.org in app-system-defaults
  1526302485238   addons.xpi  DEBUG   Existing add-on webcompat@mozilla.org in app-system-defaults
  1526302485238   addons.xpi  INFO    Mapping {972ce4c6-7e08-4474-a285-3208198ce6fd} to C:\Program Files\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}.xpi
  1526302485238   addons.xpi  DEBUG   Existing add-on {972ce4c6-7e08-4474-a285-3208198ce6fd} in app-global
  1526302485238   addons.xpi  DEBUG   getInstallState changed: false, state: {}
  1526302485332   addons.xpi-utils    DEBUG   Async JSON file read took 0 MS
  1526302485332   addons.xpi-utils    DEBUG   Finished async read of XPI database, parsing...
  1526302485336   addons.xpi-utils    DEBUG   Successfully read XPI database
  Crash Annotation GraphicsCriticalError: |[C0][GFX1]: Potential driver version mismatch ignored due to missing DLLs igd10umd64 v= and igd10iumd64 v= (t=6.22361) [GFX1]: Potential driver version mismatch ignored due to missing DLLs igd10umd64 v= and igd10iumd64 v=
  Crash Annotation GraphicsCriticalError: |[C0][GFX1]: Potential driver version mismatch ignored due to missing DLLs igd10umd64 v= and igd10iumd64 v= (t=2.67818) [GFX1]: Potential driver version mismatch ignored due to missing DLLs igd10umd64 v= and igd10iumd64 v=
  </code></pre>