GitHub Enterprise Cloud US Outage History

GitHub Enterprise Cloud US experienced degraded performance for Pull Requests due to a high percentage of 500 errors caused by timeouts across GitHub services. The incident lasted 10 minutes and was classified as minor. The team deployed a potential mitigation while investigating the timeout issues.

GitHub Enterprise Cloud US experienced a major outage affecting notifications from GitHub to Microsoft Teams for 3 hours. The issue was caused by degraded availability from Azure Teams APIs, which prevented GitHub notifications from reaching Microsoft Teams channels. The incident was resolved after GitHub worked with Azure to restore the API functionality.

GitHub Enterprise Cloud US experienced a major disruption affecting Copilot Coding Agent sessions, preventing users from starting and viewing agent sessions. The incident lasted 1 hour, with GitHub identifying the root cause and implementing a mitigation that restored service functionality.

GitHub Enterprise Cloud US experienced a major incident affecting Copilot services for 3.9 hours. Users encountered errors accessing Copilot Coding Agent features, including inability to view or start coding agent tasks, session logs not loading, sessions intermittently failing to start, and some tasks not completing successfully. The incident was resolved after engineers identified and fixed an underlying credential issue across impacted environments.

GitHub Enterprise Cloud US experienced a service disruption lasting 31 minutes that primarily affected Codespaces, with users experiencing errors when starting or connecting to their development environments. Some users were unable to access their development environments during the incident. The issue has been resolved and GitHub is preparing a detailed root cause analysis.

GitHub Enterprise Cloud US experienced service degradation affecting live updates and performance across some GitHub services for 3.8 hours. The incident impacted user experience with reduced performance during the outage period. The service was fully restored and GitHub indicated a detailed root cause analysis would be provided.

GitHub Enterprise Cloud US experienced a 20-minute service disruption where users were temporarily unable to see tasks listed in mission control surfaces. The ability to submit new tasks, view existing tasks via direct links, and manage tasks remained functional throughout the incident. The issue was resolved by deploying a revert, with full service restoration confirmed.

GitHub Copilot experienced degraded performance due to issues with the gpt-5.3-codex model from an upstream provider, affecting Copilot Chat, VS Code, and other Copilot products. The incident lasted 26 minutes and impacted users' ability to access AI-powered coding assistance features. GitHub worked with the upstream model provider to resolve the issue and restore full service.

GitHub Enterprise Cloud US experienced an incident where Claude Opus 4.6 Fast was not appearing for some Copilot users, causing degraded performance. The issue affected the Copilot service but did not result in any users losing access to Claude Opus 4.6. The incident was resolved after 42 minutes with normal service restored.

GitHub Enterprise Cloud US experienced degraded performance affecting Copilot services for 1.2 hours. The issue was identified and mitigated, with services showing recovery before full resolution. The incident was resolved with Copilot returning to normal operations.