Friday’s technology systems glitch was caused by a faulty update installed by CrowdStrike, a firm whose software is used around the world across multiple industries. CrowdStrike made clear that the incident wasn’t a cyberattack.
Transport providers, businesses and governments on Saturday were working to get all their systems back online after disruptions following a widespread global technology outage.
The biggest continuing effect has been on air travel. Carriers canceled thousands of flights Friday and now have many of their planes and crews in the wrong locations, while airports face continued problems with check-ins and security.
By Saturday evening, the Chicago Department of Aviation reported 140 flights had been canceled and another 532 delayed in the preceding 24 hours at O’Hare Airport. Four flights had been canceled and 106 delayed at Midway Airport.
United Airlines posted on its website that “most” of its systems had been restored.
