What you need to know
- Microsoft Teams, Azure, Office 365, Bing, and several other Microsoft services went down last week.
- Microsoft already confirmed that the outage was related to a DNS issue.
- A more recent report breaks down the root cause of the issue, which was a surge in DNS requests alongside a code defect.
Microsoft services went down last week for many people in the U.S., including Teams, Office 365, Xbox Live, OneDrive and Azure. Briefly after the outage, Microsoft explained that a DNS-related issue was the cause of the issues with Microsoft services. Over the weekend, Microsoft released a root cause analysis report of the issue, which sheds light on what went wrong (via ZDNet).
The report states:
Microsoft explains that its DNS services automatically recovered themselves 39 minutes after the outage started. According to the company, the "recovery time exceeded [its] design goal."
Going forward, Microsoft plans to repair the code defect that caused the issue and improve the automatic detection and mitigation of issues.
The outage that occurred on April 2, 2021 was much shorter and less severe than the outage that happened on March 15, 2021. That earlier outage was caused by an error involving the rotation of keys for Azure.
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Sean Endicott brings nearly a decade of experience covering Microsoft and Windows news to Windows Central. He joined our team in 2017 as an app reviewer and now heads up our day-to-day news coverage. If you have a news tip or an app to review, hit him up at email@example.com (opens in new tab).
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