MicrosoftWebDriver loading web driver null - selenium

Question

I have the error when run selenium on local machine which is Windows 10 Enterpise 64-bit (Microsoft Edge Version: 25.10586.672.0)and Microsoft WebDriver - Release 10240. My Selenium version is: 3.6.0
public class SeleniumTest {
private WebDriver driver;
#BeforeClass
public void getWebDriver() {
try {
System.setProperty("webdriver.edge.driver", "myapp/driver/MicrosoftWebDriver.exe");
DesiredCapabilities capabilities = DesiredCapabilities.edge();
capabilities.setCapability(CapabilityType.ForSeleniumServer.ENSURING_CLEAN_SESSION, true);
capabilities.setCapability(CapabilityType.PAGE_LOAD_STRATEGY, "eager");
capabilities.setPlatform(Platform.WIN10);
capabilities.setBrowserName(BrowserType.EDGE);
capabilities.setVersion("");
driver = new EdgeDriver(capabilities);
} catch (Exception e) {
e.printStackTrace();
}
driver.get(Constant.URL);
driver.manage().window().maximize();
driver.manage().timeouts().implicitlyWait(2, TimeUnit.SECONDS);
}
#AfterClass
public void quitDriver() throws InterruptedException {
Thread.sleep(3000);
driver.quit();
}
#Test ()
public void aTest() {
}
#Test ()
public void bTest() {
}
}
When I run code it open the Edge Browser and has error:
org.openqa.selenium.NoSuchSessionException: null (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 873 milliseconds
Build info: version: '3.6.0', revision: '6fbf3ec767', time: '2017-09-27T15:28:36.4Z'
System info: host: 'computername', ip: 'myip', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_111'
Driver info: driver.version: EdgeDriver

Answer 1

You may consider to look into the Release Notes as it mentions:
Updating .NET bindings to not send incorrect W3C Firefox capabilities
Previously, RemoteWebDriver would send the same capabilities dictionary
using both the "desiredCapabilities" and "capabilities" properties when
requesting a new remote session. In the case of the language bindings
expressly requesting to use the legacy Firefox driver, the capabilities
dictionary will include properties that are invalid for the W3C-compliant
remote server. To resolve that issue, we will mask the explicit attempt by
setting a property that causes the .NET RemoteWebDriver to send a
legacy-only compatible new session request when explicitly requesting the
legacy driver.
I don't see any significant error as such in your code except one, to see NoSuchSessionException. Instead of:
DesiredCapabilities capabilities = DesiredCapabilities.edge();
You should use:
DesiredCapabilities cap = new DesiredCapabilities();

Answer 2

It's possible you also need to start a driver service, i.e.
service = new EdgeDriverService.Builder()
.usingDriverExecutable(new File("path/to/my/MicrosoftWebDriver.exe"))
.usingAnyFreePort()
.build();
service.start();
Have a look at this example of an EdgeDriver.