Global tech outage hits airlines, banks, health care and public transit

A defective update from U.S. cybersecurity software company CrowdStrike crashed Microsoft Windows systems around the globe Friday. The tech outage disrupted operations across industries such as banks, hospitals and 911 call centers, plus grounded flights and hampered public transit systems and. Although a fix was deployed to restore most systems by the afternoon to return to normal, ripple effects may be felt throughout the weekend, experts warn.

CrowdStrike, which advertises being used by over half of Fortune 500 companies, said one of its recent content updates had a defect that impacted Microsoft’s Windows Operating System, adding the incident was “not a security incident or cyberattack.”

“Earlier today, a CrowdStrike update was responsible for bringing down a number of IT systems globally,” a Microsoft spokesperson said in a statement on Friday afternoon. “We are actively supporting customers to assist in their recovery.”

The company’s CEO, George Kurtz, apologized for the disruptions in a post on X, noting the issue has been identified and isolated and a fix has been deployed. CrowdStrike is “working with all impacted customers to ensure that systems are back up and they can deliver the services their customers are counting on.” Meanwhile, Microsoft said, “the underlying cause has been fixed” and impacted Microsoft 365 apps and services have been recovered, though the company continues to monitor the issue.

Kurtz went on to warn in his statement, “We know that adversaries and bad actors will try to exploit events like this. I encourage everyone to remain vigilant and ensure that you’re engaging with official CrowdStrike representatives.”

In the U.S., thousands of flights were canceled Friday morning. American Airlines, Delta Air Lines and United Airlines were among those who grounded flights less than an hour after Microsoft said it resolved a cloud-services-related outage that impacted several low-cost carriers.

“Every line is long,” said Chance Ortego, 31, whose flight to New York was canceled Friday morning.

Public transit systems in the U.S. also reported temporary impacts, but for the most part, trains and buses were running as scheduled. The Washington Metropolitan Area Transit Authority in Washington, D.C., said its “website and some of our internal systems are currently down,” but trip-planning applications were later restored. In New York City, the Metropolitan Transportation Authority also said some of its MTA customer information systems were temporarily offline until around 5:30 p.m.

Around the world, the outages disrupted London’s Stock Exchange, caused major train delays in the U.K., sent British broadcaster Sky News off air, forced medical facilities in Europe and the U.S. to cancel some services and caused disruptions at airports in Europe, Singapore, Hong Kong and India.

Widespread economic impact from the outage is expected to be small, even though many companies were still trying to resume full operations by the time the stock market closed.

Travel disruptions: Over 2,000 US flights canceled amid global IT outage

Developments:

◾ More than 5,000 flights were canceled globally as of 3:30 p.m. Eastern, about 4.6% of all scheduled commercial flights for the day, according to aviation analytics company Cirium.

◾ Some U.S. border crossings saw impacts amid the outage: Traffic stalled on the Ambassador Bridge, which connects Detroit with Windsor, Ontario, Canada, as well as at the Detroit-Windsor Tunnel, the Detroit Free Press reported. CBP One, the Customs and Border Patrol app, and the agency’s border wait times website, each appeared to experience outages.

◾ U.S. stocks closed lower on Friday, in the wake of the outage. CrowdStrike shares closed down 11.1% at $304.96, with analysts predicting the outage would cost the company money to fix and restore trust with its customers. It was the lowest close for the shares since May 2. Microsoft shares fared better, closing down only 0.74% at $437.11.

◾ Krispy Kreme gave away free doughnuts Friday due to the global tech outage.

◾ Some Starbucks locations were reportedly taking only cash Friday, and customers reported being unable to use the coffee chain’s mobile app.

◾ Some had a sense of humor through it, with workers who had to muddle through expressing their wishes for a digital snow day from the office − “Knock Teams out” − as the outage didn’t equate to a work stoppage for all.

◾ Dubai International Airport said on X it was operating normally following “a global system outage that affected the check-in process for some airlines.” It added the affected airlines “promptly switched to an alternate system, allowing normal check-in operations to resume swiftly.”

CrowdStrike impact: How a global IT outage unraveled the world’s tech

How the CrowdStrike outage played out throughout the day:

Portland issues emergency declaration

Portland, Oregon, Mayor Ted Wheeler issued an emergency declaration Friday over the tech outage, with a statement noting the outages are affecting city servers, employee computers and emergency communications.

Meanwhile, the Maryland Department of Emergency Management increased its state activation level from “normal” to “partial,” citing the tech outage. A post on X says a “partial” activation is for incidents that require “significant monitoring or resources,” with additional emergency operations staffing from other agencies,…