GitHub Enterprise Cloud - EU Outage History

GitHub Enterprise Cloud EU experienced a major incident where some data was missing from Elasticsearch indexes, causing degraded availability for the Issues component. The issue affected search functionality and overall performance for GitHub services in the EU region. The incident was resolved after 1.4 hours once the missing search data was identified and restored.

GitHub Enterprise Cloud EU experienced degraded performance for Pull Requests due to a regression in merge queue behavior affecting squash merging and rebasing operations. The incident lasted 1.9 hours and was resolved by reverting the problematic change. Pull Requests functionality returned to normal operation and the incident was fully resolved.

GitHub Enterprise Cloud EU experienced a 19-minute service disruption where users were unable to start Claude and Codex agent tasks from the web interface. The incident affected AI-powered coding assistant functionality for EU users. The issue was resolved after engineers identified the root cause and implemented mitigation measures.

GitHub Enterprise Cloud EU experienced a service disruption affecting Issues functionality and Copilot Coding Agent, with Copilot @-mentions on pull requests not being processed and degraded issue-related functionality. The incident lasted 2.9 hours before engineers identified the root cause, developed a fix, and successfully deployed it. The service has been fully restored with a detailed root cause analysis to follow.

GitHub Enterprise Cloud EU experienced a major disruption affecting Copilot chat and Copilot Coding Agent, with users encountering errors when trying to interact with these services. The incident lasted 3.7 hours while GitHub identified the root cause and implemented mitigations. Both Copilot chat and cloud agent services were fully restored, with recovery progressing gradually throughout the incident period.

GitHub Enterprise Cloud EU experienced a 3.9-hour service disruption affecting the Copilot Dashboard on the Insights tab, which became inaccessible to users. The issue was identified as degradation of the Insights page service and was successfully mitigated and resolved. GitHub monitored the system for stability before confirming full resolution of the incident.

GitHub Enterprise Cloud EU experienced issues where third-party Claude and Codex Agent sessions were not appearing in the agents tab dashboard. The incident lasted 22 minutes and has been resolved, with GitHub promising to share a detailed root cause analysis once available.

GitHub Enterprise Cloud EU experienced a 16-minute incident where Copilot Coding Agent jobs failed to start properly. Users attempting to assign tasks to Copilot Cloud Agent would see tasks appearing to work but not actually running. The issue was resolved and a root cause analysis was promised to follow.

GitHub Enterprise Cloud EU experienced a 6.4-hour incident where Pull Requests suffered from elevated 500 errors, timeouts, and degraded performance, with users experiencing intermittent failures when viewing or interacting with pull requests. The issue affected multiple pull request endpoints, with error rates remaining elevated throughout most of the incident period before being gradually mitigated. The incident was resolved after multiple mitigations were applied across GitHub's infrastructure, with the final fix addressing the remaining causes that were affecting under 1% of requests.

GitHub Enterprise Cloud EU experienced a major outage affecting notifications from GitHub to Microsoft Teams for 2.9 hours. The issue was caused by degraded availability from Azure Teams APIs, requiring collaboration with Azure to resolve. The incident was fully resolved with GitHub working alongside Azure to restore normal notification functionality.