Disruption with Copilot next edit suggestions

Resolved

On June 17, 2026, between 16:57 UTC and 19:14 UTC, Copilot code completions were degraded and users were unable to receive Next Edit Suggestions. Standard ghost text code completions were not affected. This was due to a configuration change that caused the service's routing layer to incorrectly discard all Next Edit Suggestion model endpoints as invalid.We mitigated the incident by deploying a corrected configuration change at 18:55 UTC, with full recovery observed at 19:14 UTC.We are working to improve the resilience of our routing layer to limit impact due to a subset of invalid configurations, and to improve our alerting to detect sudden traffic changes that are not captured by standard error rate monitors.

Update

The degradation has been mitigated. We are monitoring to ensure stability.

Investigating

We have applied mitigation and are seeing recovery

Investigating

We have identified a likely cause and are applying a mitigation

Investigating

We are investigating reports of impacted performance for some GitHub services.