Microsoft Windows IT outage: US airlines, 911 services and businesses hit by Crowdstrike disruption – live

Microsoft says cause of global chaos fixed but services may take days to recover as travelers faced major disruption and Alaska emergency services affected

CrowdStrike president George Kurtz said the problem was caused by a “defect found in a single content update for Windows hosts”.

He wrote on X:

CrowdStrike is actively working with customers impacted by a defect found in a single content update for Windows hosts. Mac and Linux hosts are not impacted. This is not a security incident or cyberattack. The issue has been identified, isolated and a fix has been deployed.

We refer customers to the support portal for the latest updates and will continue to provide complete and continuous updates on our website. We further recommend organizations ensure they’re communicating with CrowdStrike representatives through official channels. Our team is fully mobilized to ensure the security and stability of CrowdStrike customers.