Users on the subreddit for cyber security firm Crowdstrike reported issues in India, the United States and New Zealand, reported The Guardian.

Crowdstrike said blue screens of death have been observed in multiple locations across the globe and the cause is being investigated.

The company has said the issue is related to its Falcon Sensor product, and engineering teams are working to resolve the issue, according to a support notice as quoted by The Guardian.

USA

Flight service of several major operations, including Delta, United and American Airlines, remained grounded due to communication issues.

The ground stop impacts all flights from the airlines, regardless of their destination, said the Federal Aviation Administration as quoted by CNN.

It is still not clear how long the ground stop will last.

Berlin

Airport and fight operations were hit in other parts of the globe including Japan, Amsterdam, Berlin, among others.

Berlin Airport posted on X: "Passenger notice: Due to a technical problem, there may be delays in check-in."

"Information for passengers: Due to a technical fault, there will be delays in check-in," the airport said.

Spain

The Spanish airport operators said operations are currently going on in the manual system.

  "We are working to solve it as soon as possible. Meanwhile, operations are continuing with manual systems," the Spanish airport operator was quoted as saying by BBC.

UK

In the UK, major train operators are facing disruptions due to the technical faults,

The London Stock Exchange said it is operating normally but there are problems with its RNS (regulatory news service).

"RNS news service is currently experiencing a third party global technical issue, preventing news from being published on www.londonstockexchange.com," the statement says as quoted by BBC.

"Technical teams are working to restore the service. Other services across the group, including London Stock Exchange, continue to operate as normal."

Australia

Melbourne Airport said it is facing a global technological issue.

"Melbourne Airport is experiencing a global technology issue which is impacting check-in procedures for some airlines. Passengers flying with these airlines this afternoon are advised to allow a little extra time to check-in. Please check with your airline for flight updates," the airline said.

New Zealand

The  Christchurch International Airport in New Zealand said: " Christchurch Airport is experiencing IT issues across a number of our systems which may effect flight arrivals and departures. This includes flight information on our website. Please check with your airline before travelling to the airport."

India

In India, almost all major airlines, including Vistara, IndiGo, SpiceJet and Akasa Air, are facing technical issues which are affecting booking and other online services.

SpiceJet posted on X: "#ImportantUpdate: We are currently experiencing technical challenges with our service provider, affecting online services including booking, check-in, and manage booking functionalities. As a result, we have activated manual check-in and boarding processes across airports. We kindly request passengers with upcoming travel plans to arrive at the airport earlier than usual to complete check-in at our counters. We sincerely regret for any inconvenience this may cause and assure you that our teams are diligently working with our service provider to resolve these issues promptly. Thank you for your patience and co-operation during this time."

Akasa Air said: "#TravelUpdate: Due to infrastructure issues with our service provider, some of our online services, including booking, check-in and manage booking services will be temporarily unavailable. Currently we are following manual check-in and boarding processes at the airports and hence request passengers with immediate travel plans to reach the airport early to check-in at our counters. We sincerely regret the inconvenience caused and want to assure you that our teams are working with our service provider to resolve the same at the earliest."

Private airlines major IndiGO said its system has been impacted due to Microsoft outage.

IndiGo said: "Our systems are currently impacted by a Microsoft outage, which is also affecting other companies. During this time booking, check-in, access to your boarding pass, and some flights may be impacted. We appreciate your patience."

What is Blue Screen Errors?

Blue Screen errors (also sometimes called black screen errors or STOP code errors) can occur if a serious problem causes Windows to shut down or restart unexpectedly, reported Microsoft website.

These errors can be caused by both hardware and software issues.

How to solve the trouble

try the Blue Screen Troubleshooter in the Get Help app:

In Windows, open Get Help.

In the Get Help app, type Troubleshoot BSOD error.

Follow the guided walkthrough in the Get Help app.