Which banks were affected by the Microsoft outage? What we know.

Windows computers are seeing the Blue Screen of Death, flights are being grounded, and websites are down, all because of an update gone wrong from CrowdStrike.

"CrowdStrike is aware of reports of crashes on Windows hosts related to the Falcon Sensor," CrowdStrike wrote in an alert at 1:30 a.m. ET on Friday. "Symptoms include experiencing a bugcheck\blue screen error related to the Falcon Sensor. Our Engineering teams are actively working to resolve this issue and there is no need to open...