Incident with Copilot agent sessions
This summary is created by Generative AI and may differ from the actual content.
Overview
Copilot agent sessions experienced elevated errors and degraded functionality for approximately 53 minutes on February 27, 2026, between 22:53 UTC and 23:46 UTC, with around 87% of attempts to start or interact with agent sessions encountering errors.
Impact
Approximately 87% of attempts to start or interact with agent sessions encountered errors during this period.
Trigger
An expired authentication credential for an internal service component prevented Copilot agent session operations from completing successfully.
Detection
The incident was investigated after reports of degraded performance for Copilot and a spike in errors in Copilot agent sessions.
Resolution
The incident was mitigated by rotating the expired credential and deploying the updated configuration to production.
Root Cause
The root cause of the incident was an expired authentication credential for an internal service component.