After users log in, the Xbox Enforcement site creates a cookie file in their browser with details about their web session, so they won't have to re-authenticate the next time they visit the site again.
Just prior to last week's launch, Amazon sent out a wave of emails warning customers who pre-ordered Xbox Series X that they might not receive the console before Christmas.
The game unit of Sony Corp touts the new console's data-processing capacity, saying it is 100 times faster than the PS4, its predecessor launched in February 2014.