Fix delivered for tech outage that caused chaos worldwide

The cybersecurity firm CrowdStrike has deployed a fix for a software problem that triggered one of the biggest tech outages the world has ever seen, affecting industries ranging from airlines to banking and healthcare worldwide, the company’s CEO said on Friday.

All Windows computers affected by the failure will need to be manually rebooted, CrowdStrike said.

Microsoft said separately that it had fixed the underlying cause for the outage of its 365 apps and services including Teams and OneDrive, but residual impact was affecting some services.

“This is not a security incident or cyberattack. The issue has been identified, isolated and a fix has been deployed,” CrowdStrike CEO George Kurtz said in a post on the social media platform X.

In one communication to a customer reviewed by Bloomberg News, CrowdStrike’s technical supp