Major airlines, media companies, banks and telecoms firms around the world reported systems outages Friday that were disrupting their operations.

In the U.S., hundreds of flights were canceled Friday morning. American Airlines, Delta Airlines and United Airlines were among those who grounded flights less than an hour after Microsoft said it resolved a cloud-services-related outage that impacted several low-cost carriers.

Public transit systems in the U.S. reported impacts. The Washington Metropolitan Area Transit Authority in Washington D.C. said its "website and some of our internal systems are currently down," but that trains and buses were running as scheduled. In New York City, the Metropolitan Transportation Authority also said it's buses and trains were unaffected but that "some MTA customer information systems are temporarily offline due to a worldwide technical outage."

Read more at heraldnews.com.