Incident with Copilot
GitHub · Last saved provider status: resolved
The last saved event status is not the current service status. Source lists can be incomplete, and disappearance from a source does not confirm recovery. Open the current report or the official source for newer evidence.
Saved event details
- Provider status
- resolved
- Provider impact
- minor
- Provider record created
- 03 Aug 2026, 09:53:27 UTC
- Provider record updated
- 12 Aug 2026, 15:00:05 UTC
- Explicit provider start
- 03 Aug 2026, 09:53:27 UTC
- Explicit provider end
- 03 Aug 2026, 11:25:12 UTC
Affected components reported by the provider
- Copilot
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These associations describe this event’s reported scope. They do not establish current component availability or verified dependencies.
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Provider updates in saved revisions
Latest first. We show up to 100 distinct updates from the latest 20 saved content revisions. Revised wording at the same provider time is retained separately.
- resolved
On 2026-08-03, between 06:52 and 11:25 UTC, some GitHub Copilot users experienced errors when using chat and agent features. Requests to list the available models failed, and because every chat or agent interaction begins by retrieving the list of models, affected users saw their requests fail. On average about 3% of these model-listing requests failed during the incident (roughly 97% succeeded), but failures were significantly higher during peak-traffic periods, at times approaching 100% for the affected internal lookups. Approximately 4,066 users were affected in a single 60-minute window, concentrated among IDE-based clients. The underlying AI models themselves remained healthy throughout.<br /><br />The incident was caused by an increase in how often clients requested the model list, which pushed an internal user-authorization lookup past a rate limit; the rate-limited responses were surfaced to users as errors. We mitigated the impact by increasing how long Copilot caches that authorization lookup, which reduced load on the internal service, and we have additional capacity and rate-limit changes in progress. To prevent recurrence we are improving monitoring for this class of failure, adjusting cache and rate-limit settings, and coordinating with client teams on request patterns.
Seen in a saved revision at 06 Oct 2026, 13:58:39 UTC - monitoring
The degradation affecting Copilot has been mitigated. We are monitoring to ensure stability.
Seen in a saved revision at 06 Oct 2026, 13:58:39 UTC - investigating
We are still seeing intermittent errors with Copilot, and are continuing to investigate and consider mitigations.
Seen in a saved revision at 06 Oct 2026, 13:58:39 UTC - investigating
We are experiencing degraded availability for chat & agent models in Copilot. Multiple models are impacted and customers may experience requests failing. We are investigating and will provide an update as soon as possible.
Seen in a saved revision at 06 Oct 2026, 13:58:39 UTC - investigating
We are investigating reports of degraded performance for Copilot
Seen in a saved revision at 06 Oct 2026, 13:58:39 UTC