The term year 2000 problem, [1] or simply Y2K , refers to potential computer errors related to the formatting and storage of calendar data for dates in and after the year 2000. Many programs represented four-digit years with only the final two digits, making the year 2000 indistinguishable from 1900. The Y2K bug was the $600 billion crisis that never happened—thanks to one of the greatest global tech mobilizations in history. Dive in to uncover how coding foresight and teamwork saved the ... Y2K : Directed by Kyle Mooney. With Jaeden Martell, Rachel Zegler, Julian Dennison, Daniel Zolghadri. Two high-school nobodies make the decision to crash a Y2K party. The night becomes even crazier than they could have ever dreamed when the clock strikes midnight. Y2K bug, a problem in the coding of computerized systems that was projected to create havoc in computers and computer networks around the world at the beginning of the year 2000 (in metric measurements, k stands for 1,000).