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 is based on our extensive monitoring, as well as ThousandEyes’ global outage detection service, Internet Insights.
[November 12, 2026, 2:00 PM PST]
Beginning around 17:30 UTC, ThousandEyes observed availability issues affecting Microsoft 365 services globally. Users attempting to access Microsoft Outlook and other Microsoft 365 services encountered connection resets, connection refusals, response timeouts, and HTTP server errors. Significant traffic loss in Microsoft’s network was also observed during the incident. The incident is still ongoing.
Explore the outage within the ThousandEyes platform (no login required).
