Outage in Expel

Failures sending messages to Microsoft Teams channels

Resolved Major
October 17, 2025 - Started 3 days ago - Lasted about 1 hour
Official incident page

Incident Report

At 01:09UTC Oct 17th 2025, we began experiencing a problem with an upstream messaging provider that is preventing Workbench from sending automated messages to Microsoft Teams channels. We escalated the incident to the provider. They identified the cause of the problem and are working on a fix. We will provide an update by 06:30am UTC.
Components affected
Expel Teams

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Latest Updates ( sorted recent to last )
RESOLVED 3 days ago - at 10/17/2025 06:59AM

The incident has been resolved, and all systems are once again fully available. All Microsoft Teams messages from Workbench that failed during the incident have been successfully delivered.

MONITORING 3 days ago - at 10/17/2025 06:32AM

We are continuing to monitor. Workbench continues to successfully send MS Teams messages. We will post the next update at 07:00am UTC.

MONITORING 3 days ago - at 10/17/2025 06:13AM

The upstream provider confirmed that they resolved the problem. Workbench is now successfully sending messages to Microsoft Teams channels. We will continue to monitor as Workbench retries to send messages that failed because of this issue. We will post an update at 06:30UTC.

IDENTIFIED 3 days ago - at 10/17/2025 05:56AM

The issue has been identified and a fix is being implemented.

INVESTIGATING 3 days ago - at 10/17/2025 05:55AM

At 01:09UTC Oct 17th 2025, we began experiencing a problem with an upstream messaging provider that is preventing Workbench from sending automated messages to Microsoft Teams channels. We escalated the incident to the provider. They identified the cause of the problem and are working on a fix. We will provide an update by 06:30am UTC.

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