Selenium 3.0 Firefx Driver fails with org.openqa.selenium.SessionNotCreatedException: Unable to create new remote session.
System.setProperty(\"webdriver.gec
I ran into the same problem today, and it appears that not being admin on my laptop is actually an issue. To resolve it
Install in a non admin way Firefox (just need to click on no when Windows ask for privilege elevation)
Use the exe path (for my system something like C:\\Users\\MyUserName\\AppData\\Local\\MozillaFirefox\\firefox.exe).
It actually solved the issue.