Here's a quick explanation of what is going on.
In the late hours of July 18, CrowdStrike released an update which saw Windows machines BSoD (Blue Screen of Death) across the world. Initially this was reported as a Microsoft centric issue, with Azure and Office365 being impacted, but it later transpired that CrowdStrike's update of its Falcon Sensor which detects and reacts to threats to systems, was the cause. Official confirmation of CrowdStrike being the root cause has been made, and a workaround fix has been issued. Things are slowly returning to normal, but as each time zone wakes up, more cases are being reported.
