Microsoft fixes harebrained Y2K22 Exchange bug that disrupted email worldwide

Microsoft has released a fix for a harebrained Exchange Server bug that shut down on-premises mail delivery around the world just as clocks were chiming in the new year. The mass disruption stemmed from a date check failure in Exchange Server 2016 and 2019 that made it impossible for servers to accommodate the year 2022, prompting some to call it the Y2K22 bug.