title: Exception in thread "main" org.openqa.selenium.WebDriverException: unknown error: cannot get automation extension
body: <p>I am trying to login page using below script but while maximize window it shows me below error.</p>
  
  <blockquote>
    <p>Exception in thread "main" org.openqa.selenium.WebDriverException: unknown error: cannot get automation extension
        from unknown error: page could not be found: chrome-extension://aapnijgdinlhnhlmodcfapnahmbfebeb/_generated_background_page.html
          (Session info: chrome=57.0.2987.133)
          (Driver info: chromedriver=2.27.440174 (e97a722caafc2d3a8b807ee115bfb307f7d2cfd9),platform=Windows NT 10.0.14393 x86_64) (WARNING: The server did not provide any stacktrace information)
        Command duration or timeout: 10.11 seconds
        Build info: version: '3.3.1', revision: '5234b32', time: '2017-03-10 09:04:52 -0800'
        System info: host: 'PRASANNAMULAY', ip: '172.21.31.80', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_121'
        Driver info: org.openqa.selenium.chrome.ChromeDriver
        Capabilities [{applicationCacheEnabled=false, rotatable=false, mobileEmulationEnabled=false, networkConnectionEnabled=false, chrome={chromedriverVersion=2.27.440174 (e97a722caafc2d3a8b807ee115bfb307f7d2cfd9), userDataDir=C:\Users\PRASAN~1\AppData\Local\Temp\scoped_dir12528_8422}, takesHeapSnapshot=true, pageLoadStrategy=normal, databaseEnabled=false, handlesAlerts=true, hasTouchScreen=false, version=57.0.2987.133, platform=XP, browserConnectionEnabled=false, nativeEvents=true, acceptSslCerts=true, locationContextEnabled=true, webStorageEnabled=true, browserName=chrome, takesScreenshot=true, javascriptEnabled=true, cssSelectorsEnabled=true, unexpectedAlertBehaviour=}]
        Session ID: 947fe656f81e3ced5cf5c932e81bc2f8
            at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
            at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
            at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
            at java.lang.reflect.Constructor.newInstance(Unknown Source)
            at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:216)
            at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:168)
            at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:638)
            at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:661)
            at org.openqa.selenium.remote.RemoteWebDriver$RemoteWebDriverOptions$RemoteWindow.maximize(RemoteWebDriver.java:895)
            at pract_1_phase_3.Pract_1_phase_3.main(Pract_1_phase_3.java:48)</p>
  </blockquote>
  
  <pre><code>------------------------------------------------------------------------------------
  
  My code is:-
  package pract_1_phase_3;
  
  import java.awt.AWTException;
  import java.awt.Robot;
  import java.awt.event.KeyEvent;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.NoSuchElementException;
  import java.util.concurrent.TimeUnit;
  
  import org.openqa.selenium.Alert;
  import org.openqa.selenium.By;
  import org.openqa.selenium.WebDriver;
  import org.openqa.selenium.WebElement;
  import org.openqa.selenium.chrome.ChromeDriver;
  import org.openqa.selenium.chrome.ChromeOptions;
  import org.openqa.selenium.interactions.Action;
  import org.openqa.selenium.interactions.Actions;
  import org.openqa.selenium.remote.DesiredCapabilities;
  import org.openqa.selenium.support.ui.FluentWait;
  import org.openqa.selenium.support.ui.Wait;
  
  import com.google.common.base.Function;
  
  public class Pract_1_phase_3 {
  
      public static void main(String[] args)throws AWTException {
  
      //  System.setProperty("webdriver.gecko.driver","D:\\Gecko\\geckodriver.exe");
  
  
          ChromeOptions options = new ChromeOptions();
  
          Map&lt;String, Object&gt; prefs = new HashMap&lt;String, Object&gt;();
          prefs.put("credentials_enable_service", false);
          prefs.put("password_manager_enabled", false); 
          options.setExperimentalOption("prefs", prefs);
  
          ChromeDriver driver = new ChromeDriver(options);
  
          driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
  
          driver.get("http://demo.actitime.com/");
  
          driver.manage().window().maximize();
  
          driver.findElement(By.name("username")).sendKeys("admin");
  
          driver.findElement(By.name("pwd")).sendKeys("manager");
  
          driver.findElement(By.id("loginButton")).click();
  
  Please tell me whats steps i need to do to resolve above issue
  
  Thanks in advance
  </code></pre>