I'm also facing the same issue using IE with RemoteWebDriver. It throws a java.exe error
and crashes the RemoteWebDriver server

Is this only happening with the 1.x (Selenium RC) API? The WebDriverBackedSelenium class
is not well-tested in .NET. 

I am looking at the the WebDriverBackedSelenium source code. I think this situation
not only occurs in 1.x API, but also the Webdriver API.

Issue 1188 has been merged into this issue.

I'm seeing the same issue.

Selenium 2.0a4
Windows 7.0.5730.11
Firefox 3.6.13.


- I/O exception (org.apache.commons.httpclient.NoHttpResponseException) caught when
processing request: The server localhost failed to respond
- Retrying request
FAILED CONFIGURATION: @BeforeMethod setUp
org.openqa.selenium.WebDriverException: Session has no driver: 543b8644-cf76-452d-b75c-956d75148e74
System info: os.name: 'Windows XP', os.arch: 'x86', os.version: '5.1', java.version:
'1.6.0'
Driver info: driver.version: remote
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:94)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:327)
    at org.openqa.selenium.firefox.FirefoxDriver.execute(FirefoxDriver.java:191)
    at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:186)
    at org.openqa.selenium.remote.RemoteWebElement.click(RemoteWebElement.java:55)
    at com.gsicommerce.webstore.utilities.Action.link(Action.java:568)
    at com.gsicommerce.webstore.selenium.pages.acctmgmt.RegisterNewTemplatePage.clickSaveAndCloseBtn(RegisterNewTemplatePage.java:41)

Please retry with 2.0b1 and let us know if it's still a problem.

I am using the latest version. And I got this issue!

I kind of resolve this problem doing this:

1: find a element in my main page.
2: generate the popUp window
3: use seleniumDriver.switchTo().window(yourPopUpWindow);
4: close de window using java.awt.Robot, simulating "Alt + F4"
5: iterate the Set seleniumDriver.getWindowHandles(), searching the element that i
get in the fist step. If a exception is not throw, I call seleniumDriver.switchTo().window(window
in the for);

Is not pretty, but works. And i think only works for windows OS... 

This happens to me with the FirefoxDriver.
A pop up is opened, and I click the button that closes it. Then I can do no further
action. Everythiing results in:

org.openqa.selenium.WebDriverException: Session has no driver: 4f5e60f6-f1c6-4367-909f-72b9b9e3dae3

the log: http://pastebin.com/ZnuUJ5Rk

My workaround:

String mainWindow = driver.getWindowHandle();
driver.findElementById(buttonToOpenPopUp).click();
driver.switchTo().window(popupName);
driver.findElementById(buttonToClosePopUp).clic();
SeleniumSingleton.INSTANCE.switchTo().window(mainWindow);

I am getting the same error.

If you, for example open a window with some radio options, and you need to close the
window when the radio gets clicked, when clicking in the option the exceptions is thrown.


I'm using selenium through capybara. Do you guys know if there is a workaround?

I meet this error too.

I click the button to close the window and the button executes the self.close().

IE can't work, but Firefox(3.x.x) works well. 

This works for me in IE using the WebDriver API. Is it only the RC API that exhibits
the problem?

My workaround is saving the windowHandle of the main window:
    String mainWindowHandle = webDriver.getWindowHandles().iterator().next();

Open your new window and do something with it. To close it call:

    ((JavascriptExecutor) browser.getWebDriver()).executeScript("window.close()");
    webDriver.switchTo().window(mainWindowHandle);

or to close it you can simply do:
webDriver.switchTo().window(newWindowHandle);
webDriver.close()
webDriver.switchTo().window(mainWindowHandle);

Even I was facing the same issue with Firefox. Comments mentioned in 15 has worked out.

Hello I got the same issue and i don't understand what you mean here :  browser.getWebDriver()).executeScript("window.close()");
                               Whats browser instance is ? I'm noob in java & i Like
to understand things others things why iterator in this declaration :             
                             String mainWindowHandle = webDriver.getWindowHandles().iterator().next();
 Thanks all^^

Ok i resolve my issue by closing all windows and popup just after i use them and by
allowing more memory to the JVM

I am having the same problem (with Firefox 3.6.18) using a WebDriverBackedSelenium instance
that uses a RemoteWebDriver (Java API).  I reproduce the problem using the following
sequence:

1) click a link that opens pop-up window
2) driver.switchTo().window("Pop up window name");
3) driver.close();

I can use the workaround in comment 15 to prevent Firefox from crashing.  Feel free
to contact me directly if you need more info.

I am having the same problem with following setup:
Firefox 5.0.1 
selenium-java-2.1.0.jar

WebDriverBackedSelenium selenium;
selenium.selectWindow(null);
selenium.click(link);//PopUpWindow is opened
selenium.selectWindow(newWindow);
selenium.closeWindow(newWindow);
selenium.selectWindow(null);

The workaround in comment 15 also works for me. Code now looks like:
WebDriverBackedSelenium selenium;
selenium.click(link);//PopUpWindow is opened
String mainWindowHandle = selenium.getWrappedDriver().getWindowHandles().iterator().next();
selenium.selectWindow(newWindow);
selenium.closeWindow(newWindow);
selenium.getWrappedDriver().switchTo().window(mainWindowHandle);

Im also facing a similar issue with the firefox driver, where a click in a script-opened
popup closes the current popup window and adds some data to the parent page (hence
programatically closing the popup is impossible) that I wish to assert is there, but
the driver fails with

Caused by: org.openqa.selenium.remote.ErrorHandler$UnknownServerException: Session
has no driver: 34c75cfc-bb55-4c96-a172-698d595a1b11

Still getting this in FF8 and Se 2.11. 

@23: Are you switching back to the initial window handle after the popup has closed?

@jari: I believe I was, yes.

I did a further debugging found that, this occurs if I use driver.switchTo().defaultContent();
and driver.switchTo().window(); sequentially this issue happens in Webdriver. If I
use either one, it works correct. 

Here is the solution:-

mainhandle = None
        for handle in self.selenium.window_handles:
            if not mainhandle:
                mainhandle=handle
            else :                 
               self.selenium.switch_to_window(handle)
         self.selenium.switch_to_window(mainhandle) 

I've also had this problem, using WebDriver with Arquillian. The above suggestions were
not applicable to my situation. My workaround was to spawn another thread just before
the WebDriver click action to close the popup window, which is the point where it freezes
and control is lost, and after a short wait, to switch back to the main window in the
second thread. This solution works for me.

This doesn't seem to be resolved. When I click a button which submits a form in a pop
up, I lose the browser resource and it throws an error.

Happens for me when using Capybara. I need to be able to click a button on this pop
up or I cannot test the work flow (requires me to submit the "OK" button in the pop
up in order to continue)

Is this still an issue? Can anyone provide a reproduction scenario using pure selenium,
without capybara or arguillian? Instead of "Session has no driver" more specific NoSuchWindowException
should appear now in the case you forgot to switch back to the main window.

I get this NoSuchWindowException.

org.openqa.selenium.NoSuchWindowException: Window not found. The browser window may
have been closed.

    String mainWindow = driver.getWindowHandle();

    openPopupButton.click();
    String popUpWindow = driver.getWindowHandles().iterator().next();

    driver.switchTo().window(popUpWindow);

    closePopUpButton.click();  // -> Window not found exception

    driver.switchTo().window(mainWindow);

How can I switch the window before the exception occurs?

@vomi1011: This issue is related to WebDriverBackedSelenium, do you have problems with
WDBS or pure WebDriver API?

If you have problems with WebDriver API please raise a new issue and provide a reproduction
scenario that *must* include a sample page. We can't understand why you get exception
without looking at the page code.

I'm sorry, I don't have a problem with WDBS.
I saw the component: "WebDriv...Selenium" and thought it is a thread for the WebDriver
API.

I got this exception in a pageObject, but now it works fine.

I'm closing the issue, it should be fixed by now -- instead of "Session has no driver"
a more specific NoSuchWindowException should appear in the case you forgot to switch
back to the main window.

Please ask to reopen if it is still bothering you.