In what very well may be record timing, Microsoft's developer conference BUILD 2016 has sold out. No more tickets are available. If you want a ticket to Build 2016, you're going to be out of luck. Without some immense luck or a force of will the likes of which include intense clicking beyond comprehension. The other possibility for you is getting invited. That's not going to be easy, and you're probably not going to be able to get to this year's event either way.