We are seeing elevated errors with Next Edit Suggestions and Completions
This summary is created by Generative AI and may differ from the actual content.
Overview
GitHub Copilot Completions and Next Edit Suggestions were degraded for users in all regions on June 23, 2026, between 22:45 and 23:29 UTC, resulting in failed or missing code completions and Next Edit Suggestions for approximately 25% of requests, peaking at roughly 27%.
Impact
About 25% of Completions and Next Edit Suggestions requests failed during the impact window, peaking at roughly 27%.
Trigger
A configuration change prevented the Copilot service from obtaining the authentication tokens it needs to reach its model backends.
Detection
GitHub engineers detected the elevated error rate within minutes.
Resolution
The issue was mitigated at 23:22 UTC by redeploying the service with a known-good configuration, which restored normal operation. As a follow-up, the team disabled the affected authentication path to prevent a future deployment from re-introducing the problem, and is making the change rollout safer.
Root Cause
The cause was a configuration change that prevented the Copilot service from obtaining the authentication tokens it needs to reach its model backends, which both failed requests directly and caused the service to temporarily remove backends from rotation.