Business and institutions around the world have been been knocked offline after a major IT outage.
In the UK, Sky News is off air, while Britain's biggest train company warned passengers to expect disruption because of "widespread IT issues."
Around the world banks, supermarkets and other major institutions reported computer issues disrupting services, with some airlines warning of delays and some airports grounding flights.
Overnight, Microsoft confirmed it was investigating an issue with its services and apps, with the tech giant's service health website warning of "service degradation" that meant users may not be able to access many of the company's most popular services, used by millions of business and people around the world.
Cybersecurity expert Troy Hunt also reported seeing issues at global cybersecurity firm Crowdstrike, with Australian telecoms firm Telstra posting to X, formerly Twitter, that the worldwide outage was "because of a global issue affecting both Microsoft and Crowdstrike."
Among the impacted firms are Ryanair, with the airline posting to its website: "Potential disruptions across the network (Fri 19 July) due to a global third party system outage.
"Affected passengers will be notified and any passengers travelling across the network on Fri 19 July should check their Ryanair app for the latest updates on their flight.
"We advise passengers to arrive at the airport three hours in advance of their flight to avoid any disruptions.
"We regret any inconvenience caused to passengers by this third party IT issue, which is outside of Ryanair's control and affects all airlines operating across the network."
Edinburgh Airport said the IT outage is causing longer waiting times.
A spokesperson said: "An IT system outage means wait times are longer than usual at the airport.
"This outage is affecting many other businesses, including airports.
"Work is ongoing to resolve this and our teams are on hand to assist where we can. Passengers are thanked for their patience."
Meanwhile, Govia Thameslink Railway (GTR) - parent company of Southern, Thameslink, Gatwick Express and Great Northern - warned passengers to expect delays because of the issue.
