Microsoft Teams and M365 related issues – see AWS Outage

Affected services: Microsoft Teams
Status: Service degradation

Microsoft reports, “Oct 20, 2025, 6:24 AM CDT
We’ve identified that a section of the service infrastructure supporting Microsoft Teams features is performing below acceptable performance thresholds, resulting in service impact. Our automated recovery systems have detected the issue and initiated corrective actions. We’re actively monitoring the situation, and early telemetry shows positive signs of recovery.”

Scope of impact
Some users located in United Kingdom and United States that are trying to utilize Microsoft Teams features may be intermittently impacted.

Root cause
A third-party outage is causing impact in Microsoft Teams.

Users may encounter intermittent issues when using Microsoft Teams features.

10/20/2025 8:14 AM - Microsoft reports, “After further investigation, we’ve identified that a third-party outage is causing impact in Microsoft Teams. Monitoring shows positive signs of recovery, and we’ll continue to monitor until the issue is fully resolved.”

10/20/2025 10:21 AM - Microsoft reports, “We’re continuing to closely monitor the third-party outage as the service slowly recovers, and we’ll share any remediation timeline details as they become available.”

10/20/2025 12:30 PM - Microsoft reports, “More info: Impact includes, but may not be limited to, the following issues:

10/20/2025 12:30 PM - – Server connection errors resulting in Teams clients disconnecting
– Joining conference calls
– Calls dropping

10/20/2025 12:30 PM - Additionally, Amazon devices may not receive notifications for calls and messages in Teams.

10/20/2025 12:30 PM - Current status: While our monitoring of the third-party outage is ongoing, our telemetry has pinpointed another scenario that’s affected and we’ve updated the More info with these details.

10/20/2025 12:30 PM - Scope of impact: Some users located in United Kingdom and United States that are trying to utilize Microsoft Teams features may be intermittently impacted.

10/20/2025 12:30 PM - Start time: Monday, October 20, 2025, at 7:30 AM UTC

10/20/2025 12:30 PM - Root cause: A third-party outage is causing impact in Microsoft Teams.

10/20/2025 4:00 PM - Microsoft continues to experience issues related to the AWS outages. This outage will be closed and please continue to watch the overall AWS Outage in the notifications on this page.