Businesses including banks, airlines, telecommunications companies, TV and radio broadcasters, and supermarkets have been taken offline following a mass global outage.
Major US airlines including American Airlines, Delta Airlines and United Airlines have been grounded, while airports in Germany and Spain are also reporting issues.
In the UK, Southern, Thameslink, Gatwick Express and Great Northern – all four of Govia Thameslink Railway’s brands – said its services were experiencing widespread IT issues.
“We are unable to access driver diagrams at certain locations, leading to potential short-notice cancellations, particularly on the Thameslink and Great Northern networks,” the company said.
“Additionally, other key systems, including our real-time customer information platforms, are also affected.”
It comes as Microsoft said it was continuing to address the “lingering impact” of its 365 applications and services that are in a “degraded state”.
The outage appears to be affecting Windows PCs globally, including Sky News in the UK which was not able to broadcast live TV on Friday morning.
Users on the subreddit for cyber security firm Crowdstrike reported issues in India, the United States and New Zealand.
While users in Australia began reporting issues early on Friday, stating they had been locked out of their workstations.
This breaking news story is being updated and more details will be published shortly.
Please refresh the page for the fullest version.
You can receive breaking news alerts on a smartphone or tablet via the Sky News app. You can also follow @SkyNews on X or subscribe to our YouTube channel to keep up with the latest news.