Microsoft Azure Outage Caused by Configuration Error
Microsoft Azure and 365 services experienced a significant outage due to an inadvertent configuration change, resulting in widespread latencies, timeouts, and errors for users. The disruption affected a broad range of Azure services, including App Service, Azure Active Directory B2C, Azure Communication Services, Azure Databricks, Azure Healthcare APIs, Azure Maps, Azure Portal, Azure SQL Database, Container Registry, Media Services, Microsoft Defender External Attack Surface Management, Microsoft Entra ID, Microsoft Purview, Microsoft Sentinel, Video Indexer, and Virtual Desktop. Microsoft responded by deploying its last known good configuration and began recovering nodes and re-routing traffic through healthy nodes, though some users continued to experience intermittent failures during the recovery process.
The outage occurred just hours before Microsoft's quarterly earnings call and followed a similar cloud DNS error that had disrupted AWS users the previous week. Microsoft communicated the incident and recovery status via its Azure Status page, stating that full recovery was expected by the evening. The incident highlights the operational risks associated with cloud infrastructure and the potential for configuration errors to cause widespread service disruptions across critical business applications.
Timeline
Oct 29, 2025
Microsoft restores Azure Front Door using last known good configuration
Microsoft said it restored Azure Front Door by deploying a last known good configuration following the outage. The company then gradually recovered nodes and rebalanced traffic to avoid instability and overload as dependent services came back online.
Oct 29, 2025
Microsoft configuration change triggers Azure and Microsoft 365 outage
Around noon on October 29, 2025, Microsoft suffered an outage affecting Azure and Microsoft 365 after an inadvertent configuration change caused latencies, timeouts, and errors. Impacted services included Azure Front Door, App Service, Azure SQL Database, Azure Portal, Microsoft Entra ID, and Microsoft Sentinel.
Oct 20, 2025
AWS DNS misconfiguration causes major outage in Northern Virginia
Amazon Web Services experienced a major outage attributed to a DNS misconfiguration that affected DynamoDB API endpoint resolution in the Northern Virginia region. The disruption impacted AWS services and numerous customers, including UK banks, government websites, and consumer services such as Disney+, Venmo, and Signal.
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