FAILED CONFIGURATION: @BeforeMethod setUp org.openqa.selenium. WebDriverException: Error forwarding the new session Empty pool of VM for setup Capabilities

[TestNG] Running:
C:\Users\user\AppData\Local\Temp\testng-eclipse-2068414740\testng-customsuite.xml

FAILED CONFIGURATION: @BeforeMethod setUp
org.openqa.selenium.WebDriverException: Error forwarding the new session Empty pool of VM for setup Capabilities [{platform=WINDOWS, ensureCleanSession=true, browserName=internet explorer, version=}]
Command duration or timeout: 200 milliseconds
Build info: version: '2.41.0', revision: '3192d8a', time: '2014-03-27 17:17:32'
System info: host: 'ksehgal', ip: '192.168.0.162', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.7.0_67'
Driver info: org.openqa.selenium.remote.RemoteWebDriver
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:193)
at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:145)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:595)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:240)

SKIPPED CONFIGURATION: @AfterMethod tearDown
SKIPPED: windowsTest

===============================================
Default test
Tests run: 1, Failures: 0, Skips: 1
Configuration Failures: 1, Skips: 1
===============================================
===============================================
Default suite
Total tests run: 1, Failures: 0, Skips: 1
Configuration Failures: 1, Skips: 1
===============================================

[TestNG] Time taken by org.testng.reporters.XMLReporter@6beb8639: 16 ms
[TestNG] Time taken by [FailedReporter passed=0 failed=0 skipped=0]: 6 ms
[TestNG] Time taken by org.testng.reporters.jq.Main@1a0c3b27: 44 ms
[TestNG] Time taken by org.testng.reporters.EmailableReporter2@21d195ca: 4 ms
[TestNG] Time taken by org.testng.reporters.SuiteHTMLReporter@390f8c82: 23 ms
[TestNG] Time taken by org.testng.reporters.JUnitReportReporter@6ba52c90: 7 ms

How I encountered this error

• Step1 Start selenium grid hub

 java -jar selenium-server-standalone-2.41.0.jar -role hub

• Step2 Start executing test scripts.
• Step3 You will get the above error.

Solution

• You does not have any node in the selenium grid whole set up.
• Start command prompt from your local or some machine and execute this command

 java -jar selenium-server-standalone-2.41.0.jar -role node -hub http://<hub-ip>:<hub-port>/grid/register

• Now run your tests again.
• They should run fine.

Conclusion

1. To run your test scripts on a selenium grid network, you require a minimum of 1 hub and 1 node. So as to run your test scripts.
2. Hub is responsible to take care of navigating your test scripts to the desired environment combination. And node will actually run your test scripts.