Claude Opus 4.6 Fast not appearing for some Copilot users

lowGitHubCopilotMar 3, 2026 20:31Duration: 40m

computeauthenticationconfiguration

Configuration ErrorCapacity IssueAuthentication Issue

Summary

On March 3, 2026, between 19:44 UTC and 21:05 UTC, some GitHub Copilot users reported that the Claude Opus 4.6 Fast model was no longer available in their IDE model selection. After investigation, we confirmed that this was caused by enterprise administrators adjusting their organization's model policies, which correctly removed the model for users in those organizations. No users outside the affected organizations lost access.<br /><br />We confirmed that the Copilot settings were functioning a

Impact

minor

Timeline

Mar 3, 2026 20:31

[investigating] We are investigating reports of degraded performance for Copilot

via statuspage

+34m

Mar 3, 2026 21:05

[investigating] We believe that all expected users still have access to Claude Opus 4.6. We confirm that no users have lost access.

via statuspage

+6m

Mar 3, 2026 21:11

[resolved] On March 3, 2026, between 19:44 UTC and 21:05 UTC, some GitHub Copilot users reported that the Claude Opus 4.6 Fast model was no longer available in their IDE model selection. After investigation, we confirmed that this was caused by enterprise administrators adjusting their organization's model policies, which correctly removed the model for users in those organizations. No users outside the affected organizations lost access.<br /><br />We confirmed that the Copilot settings were functioning as designed, and all expected users retained access to the model. The incident was resolved once we verified that the change was intentional and no platform regression had occurred.

via statuspage

Lessons Learned

⚠GitHub has experienced 39 incidents in the past year. This frequency suggests systemic reliability challenges that may warrant additional monitoring.

📊Incidents related to compute, authentication, configuration have occurred 58 times across all providers in the past year. This is one of the most common failure categories in cloud infrastructure.

💡This incident is categorized as: Configuration Error, Capacity Issue, Authentication Issue. Consider implementing preventive measures specific to this failure category.