Widespread Microsoft Teams Outage Impacts Users Across the United States and Europe

Microsoft Teams Outage Resolved After Causing Delays for Users

Microsoft has successfully resolved an ongoing outage that was impacting Microsoft Teams users, leading to delays and hindering access to the service.

Users reported issues on the outage-tracking platform DownDetector, stating that they were experiencing problems with joining meetings using the Teams desktop client, accessing the Teams app, and signing in.

According to Microsoft’s incident report tracked under TM1233974, users were facing delays and failures when sending and receiving chat messages that included inline media such as images, code snippets, and videos.

The impact was specific to users in Europe and the United States who were served through the affected infrastructure and were attempting to send and receive chat messages with inline media.

While the exact number of affected users was not disclosed, the ongoing issue was classified as causing “service degradation” and was flagged as an incident, indicating a critical service issue with noticeable user impact.

Microsoft’s engineers are currently analyzing service monitoring telemetry data to identify the root cause of the incident and develop a remediation plan.

Additionally, Microsoft is addressing an incident that was preventing users from joining some Microsoft Teams meetings via the “Join” button in the meeting chat (TM1231009) and another incident that was hindering users from adding or updating Copilot Studio agents to Microsoft Teams (TM1218513).

In a previous outage in October 2025, multiple Microsoft 365 services, including Microsoft Teams, were affected. This incident also caused Multi-Factor Authentication (MFA) issues for users attempting to access Microsoft 365 services via Microsoft Entra single sign-on (SSO).

During the 2024 Enterprise Connect conference, Microsoft revealed that more than 320 million people use Teams each month.

Update February 17, 10:46 EST: Microsoft has confirmed that the Teams delays and access issues have been resolved. The issue was attributed to a subsection of service infrastructure related to caching in Microsoft Teams falling below manageable performance thresholds. By reverting the configuration change to the last healthy version, Microsoft remediated the impact after monitoring service telemetry.