Major U.S. airlines ordered ground stops on Friday citing communications issues, while other carriers, media companies, banks and telecoms firms around the world also reported system outages were disrupting their operations.
American Airlines (AAL.O), opens new tab, Delta Airlines (DAL.N), opens new tab, United Airlines (UAL.O), opens new tab and Allegiant Air (ALGT.O), opens new tab grounded flights less than an hour after Microsoft said it resolved its cloud services outage that impacted several low-cost carriers.
It was not immediately clear whether the call to keep flights from taking off were related to an earlier Microsoft (MSFT.O), opens new tab cloud outage.
In Australia, media, banks and telecoms companies suffered outages, which the government said appears to be linked to an issue at global cybersecurity firm Crowdstrike (CRWD.O), opens new tab.
Crowdsourced website Downdetector showed outages at several banks and telecoms companies.
Crowdstrike ran a recorded phone message on Friday when Reuters contacted its technical support saying it was aware of reports of crashes on Microsoft’s Windows operating system relating to its Falcon sensor, without mentioning Australia.
There was no information to suggest the outage was a cyber security incident, the office of Australia’s National Cyber Security Coordinator Michelle McGuinness said in a post on X.
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