Starting at 07:05 UTC on 25 January 2023, customers may experience issues with networking connectivity, manifesting as network latency and/or timeouts when attempting to connect to Azure resources in Public Azure regions, as well as other Microsoft services including M365, PowerBI.
We’ve determined the network connectivity issue is occurring with devices across the Microsoft Wide Area Network (WAN). This impacts connectivity between clients on the internet to Azure, as well as connectivity between services in datacenters, as well as ExpressRoute connections. The issue is causing impact in waves, peaking approximately every 30 minutes.
We have identified a recent change to WAN as the underlying cause, and have taken steps to roll back this change. Our telemetry shows consistent signs of recovery from 09:00 UTC onwards across multiple regions and services, and we are continuing to actively monitor the situation.
With WAN networking now seeing recovery, we are working to ensure full recovery for impacted services.
The next update will be in 30 minutes or as soon as we have further information.