Selenium Webdriver screenshots do not show driver errors

Selenium will take a screenshot that represents the rendered DOM that the browser shows the end user by intercepting the rendered image that the browser is displaying and taking a copy of it.

It does not take a desktop screenshot so the screenshots shown will not show anything covering the browser window. JavaScript alerts are not part of the rendered DOM so you will not see these in Selenium screenshots.

Maybe because the driver is not with the Alert/Window active?

You could try something like this:

 private void CheckForOtherWindows() { //Check for any other window open if (driver.WindowHandles.Count > 0) { foreach (string window in driver.WindowHandles) { driver.SwitchTo().Window(window); TakeScreenshot(); } } //Check for alert window try { driver.SwitchTo().Alert(); TakeScreenshot(); } catch { //Nothing } } 

This is not tested, not sure if works. Just giving the idea. :)

Edit: To maximize the window is easy:

driver.Manage().Window.Maximize(); 

Hope it helps.

You can use this as below:

FileUtils.copyFile(((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE), new File("E:\\ScreenShot\\screenshot.png"));