Here's how to fix the annoying 'Oops' error message on the Xbox Store

[Windows Central]

This enigmatic error prevents purchases and downloads on Xbox consoles.
The Xbox storefront used to purchase games, DLC and in-game purchases, movies, TV shows, gaming hardware and accessories, and more, is powered by the greater Microsoft Store. While overall delivering an information-rich and reliable experience to most players, the Xbox Store does have its fair share of inconsistencies and errors. One of the most annoying is an error message that reads, "Oops. Not sure what happened there."

Full story from the WindowsCentral blog...