Microsoft says Delta’s ancient IT explains long outage after CrowdStrike snafu

Enlarge / Delta Air Lines customers looking for missing bags wait in line at Los Angeles International Airport (LAX) on July 24, 2024. (credit: Getty Images | Patrick T. Fallon )

Microsoft says that Delta Air Lines' ancient IT infrastructure is to blame for the airline's inability to quickly recover from last month's CrowdStrike debacle.

With Delta threatening to sue Microsoft and CrowdStrike, both companies issued responses saying that Delta refused repeated calls for help. A Microsoft letter to Delta yesterday said the Windows maker is starting to figure out why Delta took longer than other airlines to recover.

"Microsoft continues to investigate the circumstances surrounding the CrowdStrike incident to understand why other airlines were able to fully restore business operations so much faster than Delta, including American Airlines and United Airlines," the letter from Microsoft attorney Mark Cheffo said. "Our preliminary review suggests that Delta, unlike its competitors, apparently has not modernized its IT infrastructure, either for the benefit of its customers or for its pilots and flight attendants."