Thermal event in West Europe region

Impact Statement:Starting at approximately 17:00 UTC on 05 November 2025, a subset of customers in the West Europe region may experience service disruptions or degraded performance across multiple services, including Virtual Machines, Azure Database for PostgreSQL Flexible Server, MySQL Flexible Server, Azure Kubernetes Service, Storage, Service Bus, and Virtual Machine Scale Sets, among others. Customers using Azure Databricks in West Europe may observe degraded performance when launching or scaling all-purpose and job compute workloads, which could impact Unity Catalog and Databricks SQL operations. The issue was caused by a thermal event affecting datacenter cooling systems, which led to a subset of storage scale units going offline in a single availability zone. Resources in other availability zones that depend on these storage units may also be affected.Current Status:We have recovered two of the impacted storage scale units, and customers are beginning to see signs of recovery. Recovery efforts are ongoing and progressing in parallel across other impacted storage scale units. We anticipate recovery on these units in approximately 2 hours. The next update will be provided within 2 hours, or sooner if significant developments occur.