
Maintenance bug triggers West US outage, disrupting Microsoft 365 and Azure
A bug in Microsoft's automated maintenance request system in the West US data center incorrectly marked additional network devices for maintenance, removing IP routes and causing a broad outage across Azure and Microsoft 365 services (including SharePoint, OneDrive, Teams, Admin Center, Power Automate, Copilot, and Loop). After rerouting traffic and rolling back the change, affected services recovered by 3:41 PM ET, and Microsoft is conducting a full internal review with a final post-incident report expected within about 14 days.
