Thousands of Windows machines worldwide are crashing due to a faulty CrowdStrike update, causing disruptions in banks, airlines, TV broadcasters, and more. The Blue Screen of Death issue has forced critical systems offline, impacting global businesses and services.
Thousands of Windows machines are experiencing a Blue Screen of Death (BSOD) issue at boot today, impacting banks, airlines, TV broadcasters, supermarkets, and many more businesses worldwide.
A faulty update from cybersecurity provider CrowdStrike is knocking affected PCs and servers offline, forcing them into a recovery boot loop so machines can’t start properly. CrowdStrike is widely used by many businesses worldwide to manage the security of Windows PCs and servers.
Australian banks, airlines, and TV broadcasters first raised the alarm as thousands of machines started to go offline. The issues spread fast as businesses based in Europe started their work day.
UK broadcaster Sky News could not broadcast its morning news bulletins for hours this morning and showed a message apologizing for “the interruption to this broadcast.” Ryanair, one of the biggest airlines in Europe, also says it’s experiencing a “third-party” IT issue, impacting flight departures.
The Federal Aviation Administration (FAA) says it’s assisting airlines like Delta, United, and American Airlines due to communications issues. “The FAA is closely monitoring a technical issue impacting IT systems at US airlines,” says FAA spokesperson Jeannie Shiffer in a statement to The Verge. “Several airlines have requested FAA assistance with ground stops for their fleets until the issue is resolved.”
Berlin airport also warns of travel delays due to “technical issues.” The issues have also impacted many 911 emergency call centers in Alaska. One airline in India has even turned to handwritten boarding passes due to the outages.
“CrowdStrike is actively working with customers impacted by a defect found in a single content update for Windows hosts,” says CrowdStrike CEO George Kurtz in a post on X. “Mac and Linux hosts are not impacted. This is not a security incident or cyberattack.”
CrowdStrike says the issue has been identified, and a fix has been deployed, but fixing these machines won’t be simple for IT admins. The root cause appears to be an update to the kernel-level driver that CrowdStrike uses to secure Windows machines.
While CrowdStrike identified the issue and reverted the faulty update after “widespread reports of BSODs on Windows hosts,” it doesn’t appear to help machines that have already been impacted.
In a Reddit thread, hundreds of IT admins are reporting widespread issues. The workaround involves booting affected Windows machines into safe mode, navigating to the CrowdStrike directory, and deleting a system file. That will be troublesome on some cloud-based servers or even for Windows laptops deployed and used remotely.
“Our entire company is offline,” says one Reddit poster, while another says 70 percent of their laptops are down and stuck in a boot loop. “Happy Friday,” says one Reddit poster. It looks like IT admins worldwide will have a long day.
In what appears to be a separate outage, Microsoft is also recovering from several issues with its Microsoft 365 apps and services. The root cause of those issues was “a configuration change in a portion of our Azure backend workloads.”
