Incident with Copilot

Final update

On February 11, 2025, between 14:30 UTC and 15:30 UTC, the Copilot service experienced degraded availability for requests to Claude Haiku 4.5. During this time, on average 10% of requests failed with 23% of sessions impacted. The issue was caused by an upstream problem from multiple external model providers that affected our ability to serve requests. The incident was mitigated once one of the providers resolved the issue and we rerouted capacity fully to that provider. We have improved our telemetry to improve incident observability and implemented an automated retry mechanism for requests to this model to mitigate similar future upstream incidents.

1. Resolved · Feb 11, 15:46 UTC
   On February 11, 2025, between 14:30 UTC and 15:30 UTC, the Copilot service experienced degraded availability for requests to Claude Haiku 4.5. During this time, on average 10% of requests failed with 23% of sessions impacted. The issue was caused by an upstream problem from multiple external model providers that affected our ability to serve requests. The incident was mitigated once one of the providers resolved the issue and we rerouted capacity fully to that provider. We have improved our telemetry to improve incident observability and implemented an automated retry mechanism for requests to this model to mitigate similar future upstream incidents.