Disruption with Copilot next edit suggestions

Severity: Minor
Category: Misconfiguration
Service: GitHub

This summary is created by Generative AI and may differ from the actual content.

Overview

Disruption with Copilot next edit suggestions between 16:57 UTC and 19:14 UTC on June 17, 2026, due to a configuration change that caused the service's routing layer to incorrectly discard all Next Edit Suggestion model endpoints as invalid.

Impact

Users were unable to receive Next Edit Suggestions, but standard ghost text code completions were not affected.

Trigger

A configuration change caused the service's routing layer to incorrectly discard all Next Edit Suggestion model endpoints as invalid.

Detection

The incident was detected when users reported impacted performance for some GitHub services, prompting an investigation.

Resolution

A corrected configuration change was deployed at 18:55 UTC, with full recovery observed at 19:14 UTC.

Root Cause

The root cause of the incident was a configuration change that caused the service's routing layer to incorrectly discard all Next Edit Suggestion model endpoints as invalid.