Microsoft Teams Hit by Temporary Outage Across US and Europe

Service disruption affects chats, meeting access, and app logins before engineers restore stability

Microsoft faced fresh scrutiny after a temporary outage disrupted its popular collaboration platform, Microsoft Teams, impacting users in the United States and parts of Europe.

The issue, which began earlier in the day, caused delays in sending and receiving chat messages, especially those containing images, videos, or code snippets. Some users also reported trouble signing into the app and joining meetings through the desktop client. According to outage-tracking platform DownDetector, complaints quickly surfaced as businesses struggled to connect during working hours.

Microsoft identified the disruption as a “service degradation” incident and confirmed that engineers were reviewing system data to pinpoint the cause. The company later explained that a portion of the service infrastructure responsible for caching performance had fallen below acceptable thresholds.

“A subsection of service infrastructure… fell below our manageable service performance thresholds,” Microsoft stated in an update, adding that engineers reverted a recent configuration change to restore normal operations. After monitoring system performance, the company confirmed that the issue had been resolved.

The outage comes as Teams continues to serve a massive global user base. Microsoft revealed last year that more than 320 million people rely on the platform every month for meetings, messaging, and collaboration.

Although the disruption lasted only about an hour, it once again highlighted how deeply businesses depend on cloud-based communication tools, and how even brief technical hiccups can ripple across continents.