CrowdStrike IT Outage: 8.5m Windows Devices Affected, Microsoft Releases Recovery Tool

Microsoft has disclosed that the CrowdStrike software update, which caused widespread IT disruptions worldwide on Friday, affected an estimated 8.5m Windows computers.

The primary cause of the problem was a sensor configuration update that was distributed to Windows systems on July 19, 2024. The update caused a logic error that resulted in the global “blue screen of death” for important computer systems.