Steps Microsoft took to mitigate the outage
The latest problems with Microsoft 365 began to appear around 11:45 UTC on Tuesday, when an unexpected usage spike resulted in Azure Front Door (AFD) and Azure Content Delivery Network (CDN) components performing below acceptable thresholds, leading to intermittent errors, timeout, and latency spikes, Microsoft said.
The dip in performance affected a subset of Microsoft 365 services and other services, including Azure App Services, Application Insights, Azure IoT Central, Azure Log Search Alerts, Azure Policy, as well as the Azure portal itself.
The services impacted included the Microsoft 365 admin center itself, Intune, Entra, and Power Platform.