Originally Posted by MrBonk
Unable to start downloads of the game. Even with the downloader running.
Mine did that. If you got the Microsoft pack, they're only steam keys, I believe, and the downloader simply looks up your steam key and puts it in a document. If you don't have the 'view product key' button yet, the downloader fails because it can't do the lookup. I know my downloaded failed too before the steam keys were available on my account page.
Wait a few minutes and see if the product keys show up on your account page. I had to wait several minutes for mine to appear. The servers are working hard!