Tesla sent staff a notice on Friday morning that the company had been impacted by a "Windows Host Outage," according to the memo obtained by BI.

Tesla halted some production lines due to the global IT outage, Business Insider reported on Friday, citing sources familiar with the matter. The automaker sent some production employees home early during the night shift at its Austin,

A monitor shows a Windows machine in recovery mode next to the Microsoft employee Delta Airlines check-in at Sea-Tac Airport on Friday morning. (GeekWire

The cybersecurity firm issued a software update for computers running Microsoft’s Windows operating system, but the update contained a bug so severe that it caused the “Blue Screen of Death.”

Cybersecurity technology company CrowdStrike has apologized for the update that caused a major Microsoft IT outage.

U.S. cyber-security firm CrowdStrike's shares fell after a serious IT outage sparked by an issue at the company disrupted businesses around the world, forcing banks, airlines, and broadcasters to go offline.

Delta, American and United have resumed flights, although there are likely to be ongoing delays and cancellations due to an outage sparked by a faulty cybersecurity update.