Crowdstrike Microsoft IT outage explained: What happened and how it affects you
![Crowdstrike Microsoft IT outage explained: What happened and how it affects you](https://i2-prod.mirror.co.uk/incoming/article33285682.ece/ALTERNATES/s615/0_IT-outages.jpg)
The outage was triggered by an update from a US software security firm CrowdStrike, which left airports cancelling flights, hospitals axing appointments and shops unable to take cash