A global IT outage causing disruptions affecting airports, hospitals and businesses worldwide Friday morning was rooted in an issue with the Texas-based cybersecurity firm CrowdStrike. Officials with the firm said the outage wasn't believed to be the result of a cyberattack.

A fault with an update issued by cybersecurity company CrowdStrike led to a cascade effect among global IT systems Friday, with industries ranging from banking to airlines facing outages. Banks and health care providers saw their services disrupted and TV broadcasters went offline as businesses worldwide grappled with the ongoing outage.

Behind a massive IT failure that grounded flights, upended markets and disrupted the operations of corporations around the world is one cybersecurity company: CrowdStrike Holdings Inc.

A widespread Microsoft outage disrupted flights, banks, media outlets and companies around the world on Friday.   Cybersecurity firm CrowdStrike said that the issue is not a security incident or cyberattack.

Major airlines, media organizations and businesses around the world were affected by a massive IT glitch caused by a problem with cloud computing services.

Computer systems at businesses and public services around the globe failed after a botched update of a widely used cybersecurity program took down Microsoft Corp. systems.

A mass IT outage has caused travel chaos around the world, with banking and healthcare services also badly hit. Many flights have been grounded, with queues and delays at airports. Cyber-security firm Crowdstrike has admitted that the problem was caused by an update to its software,