Outage in Microsoft Copilot
Users may be unable to use Microsoft Copilot
Resolved Major
May 29, 2026 - Started 2 days ago
- Lasted about 3 hours
Incident Report
Summary AI Generated
Microsoft Copilot experienced a major outage lasting 3.2 hours due to high utilization on the underlying LLM API infrastructure. Users reported complete unresponsiveness, extremely slow performance taking several minutes instead of seconds, and frequent "high demand" error messages preventing normal usage. Microsoft resolved the issue by applying infrastructure mitigations and adjusting service-level routing, throttling, and retry configurations.
We've identified high utilization on the underlying infrastructure that the Copilot LLM APIs use and are applying mitigations. Additionally, at the Copilot service level, we're reviewing options to change routing paths, throttling rules and retry logic to allow the underlying infrastructure to recover.
Components affected
Microsoft CopilotLatest Updates ( sorted recent to last )
2 days ago - at 05/29/2026 05:01PM
Title: Users may be unable to use Microsoft Copilot
User impact: Users may be unable to use Microsoft Copilot.
Current status: We've identified high utilization on the underlying infrastructure that the Copilot LLM APIs use and are applying mitigations. Additionally, at the Copilot service level, we're reviewing options to change routing paths, throttling rules and retry logic to allow the underlying infrastructure to recover.
Next update by: Friday, May 29, 2026, at 6:30 PM UTC
2 days ago - at 05/29/2026 03:50PM
Title: Users may be unable to use Microsoft Copilot
User impact: Users may be unable to use Microsoft Copilot.
Current status: We're reviewing service telemetry to isolate the source of the issue.
Next update by: Friday, May 29, 2026, at 5:30 PM UTC
source IsDown
Service outage affecting copilot responses
Reports started about 1 hour before official outage was reported
Users report slow or non-functional copilot, stuck on 'Lining Things Up'. Likely due to an AI loop or service issue.
Latest Microsoft Copilot outages
We're looking into a potential problem impacting Microsoft 365 Copilot chat - about 1 month ago
Users may see intermittent issues with the Microsoft Copilot service - about 1 month ago
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