I have a project that sometimes uses multiple FF windows and sometimes multiple FF drivers. During init, I create a custom FirefoxProfile (or load a default from Selenium without any changes), add it to DesiredCapabilities, add capabilities to FirefoxOptions and start FF with FirefoxOptions.
Test case executes fine, until I need to close the window:
driver.getWindowHandles().forEach(name -> driver.switchTo().window(name).close());
or
driver.quit();
After either one of these pass, FF shuts down and "Firefox has crashed" popup appears. No exception is shown in logs.
If I remove FirefoxProfile, no crash popup appears, but FirefoxProfile is needed to enable Flash support and do more.
Using:
- Selenium 3.4.0
- Firefox 54 (32 bit)
- Geckodriver 0.17 (32 bit)
- Windows 10, 64bit // Windows 7, 64bit
The driver is failing to properly terminate the sub processes created by Firefox like flash.
https://github.com/mozilla/geckodriver/issues/285
To avoid the dialogue box, you can set the environemnt variable XRE_NO_WINDOWS_CRASH_DIALOG to 1.