I downloaded and installed Unity 5.1.1f1 twice and each time when i start unity, i get the Welcome to Unity with a {message} and {description}. Along with 3 buttons that do nothing when i click them. Work offline, manual activation and quit. None of them work. I allowed unity passed my firewall and even disabled it and still comes up with this screen. Anyone know why?
Consider checking date and time of your system as i was having same problem and i solved it when i corrected date and time…