Microsoft Teams outage affects users in United States, Europe

Source: Bleeping Computer

Outage Overview

Microsoft is working to resolve an ongoing outage affecting Microsoft Teams users, causing delays and preventing some from accessing the service.

According to user reports on the outage‑tracking platform DownDetector, the incident is causing problems when joining meetings with the Teams desktop client, accessing the Teams app, and signing in.

“Users may experience delays and failures when sending and receiving chat messages that include inline media (images, code snippets, videos),” Microsoft said in an incident report tracked under TM1233974.

Impact

The impact is specific to some users located in Europe and the United States who are served through the affected infrastructure and are attempting to send and receive chat messages that include inline media (images, code snippets, videos).

While Microsoft has not disclosed how many users are affected, the issue is tagged as causing service degradation and has been flagged as an incident—a term commonly used for critical service issues with noticeable user impact.

Ongoing Investigation

Microsoft added that its engineers are reviewing service monitoring telemetry data to isolate the root cause and develop a remediation plan.

Additional Incidents

• A problem that blocks users from joining some Microsoft Teams meetings via the “Join” button in the meeting chat (tracked as TM1231009).
• An issue that prevents some users from adding or updating Copilot Studio agents to Microsoft Teams (TM1218513).

Past Outage (October 2025)

A previous outage in early October 2025, also tagged as a critical service issue, took down multiple Microsoft 365 services, including Microsoft Teams. That incident caused Multi‑Factor Authentication (MFA) issues for users attempting to access Microsoft 365 services via Microsoft Entra single sign‑on (SSO). See the coverage here.

Usage Statistics

As Microsoft revealed at its 2024 Enterprise Connect conference, more than 320 million people use Teams each month (source).

This is a developing story…