Computer Outage Reports from Crowdstrike: Network and Travel Disruptions in the United Kingdom, Airports, Transport, Airlines, and Other Countries

An X user posted a screenshot of an alert from the company Crowdstrike that said the company was aware of “reports of crashes on Windows hosts” related to its Falcon Sensor platform. The alert was posted on a password-protected Crowdstrike site and could not be verified. Crowdstrike didn’t reply to a request for comment.

News outlets in Australia — including the ABC and Sky News — were unable to broadcast on their TV and radio channels, and reported sudden shutdowns of Windows-based computers. Some news anchors broadcast live online from dark offices, in front of computers showing “blue screens of death.”

The banks and airlines, as well as internet and phone providers, were reported to have suffered Australian outages.

In Germany, Berlin Airport said that there would be delays due to a technical fault. It was reported that flights were stopped until 10 a.m.

Amsterdam’s Schiphol Airport said on its website that the outage was having a “major impact on flights” to and from the busy European hub. The outage came on one of the busiest days of the year for the airport, at the start of many people’s summer vacations.

Widespread problems were reported at Australian airports, where lines grew and some passengers were stranded as online check-in services and self-service booths were disabled. Passengers in Melbourne queued for more than an hour to check in.

“We’re currently experiencing disruption across the network due to a global third party IT outage which is out of our control,’’ Ryanair said. “We advise all passengers to arrive at the airport at least three hours before their scheduled departure time.”

Airlines, railways and television stations in the United Kingdom were being disrupted by the computer issues. Sky News, as well as train operators TransPennine Express and Govia Thameslink Railway are among those affected.

Microsoft posted on their website that they were working on redirecting the impact traffic to alternate systems and that they were watching a positive trend in service availability.

DownDectector.com, a website that tracks internet outages, recorded growing issues with Visa, American Airlines, and other airlines.

Escalating disruptions continued hours after the technology company said it was gradually fixing an issue affecting access to Microsoft 365 apps and services.

Disruptions caused by Friday’s tech outage continued into Saturday, as employees of airlines, banks, hospitals and other crucial businesses worked to catch up from the large number of Windows devices that were affected.

The airlines were playing the biggest catchup game after being forced to stop their flights on Friday and left planes stuck in the wrong locations. As of Saturday afternoon, nearly 1,500 flights across the U.S. had been canceled for the day, with another 4,600 delayed, according to the flight tracking site FlightAware.

“My whole trip is more or less ruined,” said Mariah Grant, an American who told NPR she was stuck in London after her flight to New York was significantly delayed because of the outage.

She said that it all spoke to the fact that we are so reliant on technology.

The Massachusetts General Brigham Hospital, Inc., Returned to Operational Operations After the Independence of the CrowdStrike Event on Saturday

Massachusetts General Brigham, a Boston- based hospital, said it was back to being operational on Saturday after it canceled all non- urgent surgeries and other appointments on Friday.

“Our response teams are continuing to work diligently throughout the weekend to address the many additional downstream impacts across our system from the CrowdStrike failure,” Noah Brown, the hospital’s director of global communications, told NPR in a written statement.

In a statement, the Austin-based CrowdStrike said it was “actively working with customers” whose screens were impacted by the incident, confirming it was not a cyberattack.

David Weston, Microsoft’s vice president for enterprise and OS security, wrote in a blog post that the use of CrowdStrike by enterprises that run many critical services reflects the broad economic and societal impacts.