A significant global IT outage has impacted numerous sectors, including banks, airlines, train companies, telecommunications, TV and radio broadcasters, and supermarkets.
Among the affected are major US airlines such as American Airlines, Delta Airlines, and United Airlines, which have had their operations halted. Airports in Germany, Amsterdam, and Spain are also encountering difficulties.
The issue seems to be linked to problems at global cybersecurity firm CrowdStrike and Microsoft. However, it’s not confirmed if the same problem is causing disruptions at airports and train services worldwide.
CrowdStrike informed its clients that its Falcon sensor software had caused Microsoft Windows to crash, leading to the infamous “blue screen of death.” CrowdStrike CEO George Kurtz clarified on X that the defect was isolated to a single content update for Windows hosts. He emphasized that this was not a security incident or cyberattack, assuring that the problem had been identified, isolated, and resolved.
The outage is impacting Windows PCs globally. In the UK, Sky News was unable to broadcast live TV on Friday morning. London’s Heathrow Airport reported operational flights but noted delays. They are implementing contingency plans and advising passengers to check with airlines for the latest flight information.
Gatwick Airport warned of potential delays, especially during check-in and security procedures. Luton Airport is using manual systems to maintain operations.
Ryanair alerted customers to possible disruptions affecting all airlines across the network, though specifics were not provided. Edinburgh Airport passengers faced manual checks for boarding passes due to automated systems being offline.
The IT issues have also reached UK GP surgeries, preventing access to patient records and appointment booking systems. NHS England acknowledged the disruption across most GP practices but noted no impact on emergency services. Several surgeries, including Grimethorpe Surgery in Barnsley and Wilmslow Health Centre in Cheshire, reported issues with the EMIS Web clinical system.
Southern, Thameslink, Gatwick Express, and Great Northern train services in the UK, operated by Govia Thameslink Railway, are experiencing extensive IT problems. This has led to potential short-notice cancellations and affected real-time customer information platforms. National Rail’s IT teams are investigating the root cause.
The London Stock Exchange is also experiencing disruptions, with technical issues affecting the publication of Regulatory News Service announcements. As trading began, the exchange’s website showed outdated prices, impacting the FTSE-100 and other major European stock indices.
Users on the subreddit for CrowdStrike reported problems in India, the US, and New Zealand. In Australia, the National Security Coordinator acknowledged the widespread technical issues but found no evidence of a cybersecurity incident. Sky News in Australia also faced broadcasting interruptions, though their news content remained accessible online.
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