So I preordered Fallout 4 digitally and now it is saying that I require the disk???????

Started working again never mind

There's an Xbox Live service issue going on, with a lot of people stating it's a DDOS attack on the Xbox Live servers, whether this is true or not I do not know. If you really want to play now, I recommend putting your console into offline mode and your Fallout 4 digital game copy should start. It's possible you might have to disconnect your console from the internet entirely, but I can't say if you do need to for sure.