After Microsoft’s digital interruption, airlines worldwide scramble to recover.

London: After a broad technology outage, transport providers, businesses, and governments are scrambling to restore their systems on Saturday.

Air travel has been most affected. On Friday, airlines canceled thousands of flights, leaving many planes and crews in the wrong spot and airports with check-in and security issues.

CrowdStrike, which sells cybersecurity software to thousands of firms, is causing the major interruption.

The company said a defective update to Microsoft Windows machines caused the downtime, not a security breach or cyberattack.

Britain’s transit system struggles to recover.

Airlines are canceling and delaying flights on the first day of summer vacation for many British schoolchildren after the global security failure.