Hi I purchased my Xbox One Titanfall Bundle today around 12 PM Central US and well I have the same trouble as everyone I was unable to sign in.
I did everything
turning off and on my xbox (proper way hold the xbox button on the xbox)
unplugging my wire internet
unplugging everything and re plugging it
so just a few mins ago I just forget it ima do a "Factory Default Restart" since I had nothing on my xbox since it's fresh and new I had nothing to loose
FDR is found in settings and then system settings and what do you know IT WORKED
i am now able to login. I don't know if this will work with people who already have things on the xbox one I just know it will work for those who bought the bundle.
my only problem that I have is that I am unable to download my titanfall game due to the fact that it is not a disk instead it is a download from the store I do not know how to do truck where it wont download updates. If anyone had a trick to it please let me know ASAP.