Description
Starting at 07:05 UTC on 25 January 2023, Microsoft informed that 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, Power BI. It was determined that network connectivity issue was occurring with devices across the Microsoft Wide Area Network (WAN). This impacted connectivity between clients on the internet to Azure, as well as connectivity between services in data centres. The issue caused impact in waves, peaking approximately every 30 minutes. Microsoft identified a recent WAN update as the likely underlying cause, and they took steps to roll back this update.
Timeline of incident (CET)
- At 08:05 on 25 January 2023, Microsoft informed IT-suppliers that customers may experience issues with networking connectivity.
- At 9:30 e-VIS is made aware that Microsoft has Global problems and starts monitor SMVS.
- At 09:52 end-user contacts e-VIS with problem to connect to SMVS.
- At 10.01 e-VIS inform all end-users and end-user IT-suppliers about the ongoing incident.
- At 11:40 Microsoft had identified the issue and was remediating the issue. They have identified a recent WAN update as the likely underlying cause, and took steps to roll back this update. After remediating actions was performed it showed signs of recovery across multiple regions and services, and they continued to actively monitor the situation.
- At 12:30 Microsoft stated that the issue was fully mitigated.