Widespread Disruptions Hit Microsoft Azure and AWS, Causing Hours-Long Outages for Dozens of Websites and Apps

Strategic Insights -

On Wednesday, a major outage hit Microsoft's Azure and Amazon Web Services (AWS), leaving dozens of websites and apps inaccessible for hours. The disruption was linked to Azure's global content delivery network and its Front Door services, affecting services like Microsoft 365, Minecraft, and Outlook. At one point, over 18,000 users reported issues in accessing Azure, according to the outage reporting website Downdetector. Microsoft acknowledged the problem, stating that a recent configuration change triggered the outage, which significantly impacted the Eastern United States.

Key Takeaways:

  • The outage affected dozens of websites and apps, including Microsoft 365, Minecraft, and Outlook, due to Azure's global content delivery network and Front Door services issues.
  • The disruption significantly impacted the Eastern United States, with difficulties starting at approximately 4 p.m. UTC (9:30 pm).
  • Over 18,000 users reported issues in accessing Azure, as per the outage reporting website Downdetector.
  • Microsoft acknowledged the problem, stating that a recent configuration change triggered the outage.
  • The root cause of the Azure outage was linked to DNS problems, while the AWS outage caused by DNS errors at its Northern Virginia data centre affected platforms including Snapchat, United Airlines, and others.
  • The recovery process from Amazon took hours, with the mitigation process beginning following the identification of the problem at 07:11 GMT (12:41 pm IST).
  • By 10:30 GMT (4:00 pm IST), AWS said that the DNS had been "fully mitigated", though the clearing of backlog from the outage took several more hours.

Statistics:

  • Over 18,000 users reported issues in accessing Azure, according to Downdetector.
  • The AWS outage affected over 11 million users, as recorded by Downdetector.
  • Over 4 million individuals faced issues with AWS services, according to Ookla.
  • The recovery process from Amazon took hours, with the mitigation process beginning at 07:11 GMT (12:41 pm IST).
  • The clearing of backlog from the outage took several more hours, with AWS announcing that all services had "returned to normal operations" by evening.

Sources:

  • [Microsoft statement]
  • [AWS statement]
  • [Downdetector]
  • [Ookla]