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Outage Analyses

Microsoft Outage Analysis: February 7, 2023

By Internet Research Team
| | 2 min read

Summary

On February 7, 2023, Microsoft customers began experiencing issues accessing the Microsoft Outlook service. See how the outage unfolded in this rolling analysis as more updates will be added as we have them.


ThousandEyes actively monitors the reachability and performance of thousands of services and networks across the global Internet, which we use to analyze outages and other incidents. The following analysis of Microsoft’s service disruption on February 7, 2023, is based on our extensive monitoring, as well as ThousandEyes’ global outage detection service, Internet Insights.

Figure-1-Microsoft-Outage-Analysis-February-7-2023.jpeg


[Feb 7, 2023, 09:00 AM PT] 

On February 7, 2023, starting at around 03:55 UTC, Microsoft customers in various regions across the globe including North America, Europe, and Asia began experiencing issues accessing Microsoft Outlook service. Although the incident was similar to the recent January 25th event in terms of global reach and duration, it did not appear to be network related, as no significant packet loss or latency or unusual routing behavior was observed during the incident.


Explore an interactive view of the outage as seen in the ThousandEyes platform (no login required).


Additional Details

  • ThousandEyes vantage points saw elevated server response timeouts and slow page loading, all indicative of an application-related issue.

  • Users connecting from within the U.S. appeared to see the greatest impact, although access issues and degraded performance was also present for users in other regions.

  • The incident mostly resolved at approximately 05:35 UTC; however, intermittent issues continued to be observed until about 09:40 UTC.

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