Outage in Azure

Networking Issues - West Europe - Mitigated

Resolved Minor
June 16, 2023 - Started over 1 year ago - Lasted about 6 hours

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Outage Details

Impact Statement: Between 02:34 UTC and 07:25 UTC on 16 June 2023, we identified a networking issue in West Europe region. Networking traffic to and from West Europe may have been affected and resources hosted in this region may have experienced availability failures, low throughput, or increased latencies. Preliminary Root Cause: We identified that network automation systems incorrectly determined that network links in West Europe region were not working properly and shut down the links. Regions are built with extensive redundancy, however enough links were taken out of service to cause congestion and impact to customer traffic. Mitigation: Engineers placed the links back into service and ensured that the network automation would not remove them again. The network recovered after the links were restored, and other services dependent on the network recovered shortly thereafter. Next Steps: We will continue to investigate to establish the full root cause and prevent future occurrences. Stay informed about Azure service issues by creating custom service health alerts: https://aka.ms/ash-videos for video tutorials and https://aka.ms/ash-alerts for how-to documentation
Components affected
West Europe - Azure HPC Cache West Europe - App Service West Europe - Azure Database for MySQL West Europe - Cloud Services West Europe - Azure Spring Cloud West Europe - Azure VMware Solution West Europe - Azure Cognitive Search West Europe - Azure Red Hat OpenShift West Europe - Azure Container Apps West Europe - Azure Cosmos DB West Europe - Azure Quantum West Europe - App Configuration West Europe - Virtual Network West Europe - Azure NetApp Files West Europe - Azure Database for PostgreSQL West Europe - Azure SQL Database West Europe - Azure Cache for Redis West Europe - App Service (Linux) West Europe - Service Fabric West Europe - Azure Database for MySQL flexible servers West Europe - Azure Database for MariaDB West Europe - API Management West Europe - Azure functions West Europe - Virtual Machine Scale Sets West Europe - Azure Database for PostgreSQL flexible servers West Europe - Azure Data Share West Europe - Web Apps Linux West Europe - SQL Server Stretch Database West Europe - Azure Databricks West Europe - Azure Data Explorer West Europe - Key Vault West Europe - Virtual Machines West Europe - SAP HANA on Azure Large Instances West Europe - BareMetal Infrastructure West Europe - Microsoft Purview West Europe - Health Bot West Europe - Azure Machine Learning West Europe - Machine Learning Studio (classic) West Europe - Azure Cognitive Services West Europe - Custom Vision West Europe - Language Understanding (LUIS) West Europe - Personaliser West Europe - QnA Maker West Europe - Speech services West Europe - Azure Private Link West Europe - Web Application Firewall West Europe - StorSimple West Europe - Load Balancer West Europe - ExpressRoute Circuits West Europe - ExpressRoute Gateways West Europe - Azure Firewall West Europe - Virtual WAN West Europe - Azure Route Server West Europe - Azure VNet NAT West Europe - Storage Accounts West Europe - Microsoft Azure Attestation West Europe - Azure confidential ledger West Europe - Azure DevTest Labs West Europe - Text Analytics West Europe - Microsoft Genomics West Europe - Azure Applied AI Services West Europe - Azure Key Vault Managed HSM West Europe - Azure DDoS Protection West Europe - Azure Dedicated HSM West Europe - Azure Firewall Manager West Europe - Azure Load Testing West Europe - Azure Managed Grafana West Europe - Azure Backup West Europe - AutoScale West Europe - Application Insights West Europe - Log Analytics West Europe - Azure Site Recovery West Europe - Automation West Europe - Azure Chaos Studio West Europe - Azure Automanage West Europe - Media Services West Europe - Azure Database Migration Service West Europe - Batch West Europe - VPN Gateway West Europe - Network Watcher West Europe West Europe - Network Infrastructure West Europe - Azure Immersive Reader West Europe - Azure Metrics Advisor West Europe - Azure Video Indexer West Europe - Azure IoT Hub West Europe - IoT Hub Device Provisioning Service West Europe - Azure Time Series Insights West Europe - Event Grid West Europe - Logic Apps West Europe - Azure IoT Central West Europe - Azure Digital Twins West Europe - Service Bus West Europe - Azure Health Data Services West Europe - Azure API for FHIR West Europe - Azure Active Directory Domain Services West Europe - Scheduler West Europe - Azure SignalR Service West Europe - Azure web PubSub West Europe - Azure Fluid Relay West Europe - Notification Hubs West Europe - Azure Container Service West Europe - Container Instances West Europe - Container Registry West Europe - Azure Kubernetes Service (AKS) West Europe - Azure Dev Spaces West Europe - Computer Vision West Europe - Content moderator West Europe - Face API West Europe - Application Gateway West Europe - Azure Managed Instance for Apache Cassandra West Europe - Azure Synapse Analytics West Europe - HDInsight West Europe - Azure Data Factory West Europe - Azure Stream Analytics West Europe - Data Lake Analytics West Europe - Event Hubs West Europe - Azure Analysis Services West Europe - Data Catalogue West Europe - Azure Data Lake Storage Gen1 West Europe - Azure SQL Migration extension for Azure Data Studio powered by Azure Database Migration Service West Europe - Spatial Anchors West Europe - Remote Rendering West Europe - Azure Arc-enabled servers West Europe - Azure Arc enabled Kubernetes West Europe - Azure Arc-enabled data services

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