Incident with GitHub.com

Timeline

1. 13:40 UTC GitHub status page · Reported Incident with GitHub.com
2. 17:30 UTC GitHub status page · Investigating Git Operations is experiencing degraded performance. We are continuing to investigate.
3. 17:34 UTC GitHub status page · Investigating We identified the problematic component and have taken corrective actions, but we are seeing residual impact across numerous services. We are continuing to apply additional mitigations and investigate the remaining impact.
4. 17:36 UTC GitHub status page · Investigating Issues is experiencing degraded performance. We are continuing to investigate.
5. 18:11 UTC GitHub status page · Investigating We identified the problematic component and have taken corrective actions, but we are seeing residual impact in the form of sporadic authentication failures. We are continuing to apply additional mitigations and investigate the remaining impact.
6. 18:23 UTC GitHub status page · Investigating The degradation affecting Git Operations has been mitigated. We are monitoring to ensure stability.
7. 18:48 UTC GitHub status page · Investigating API Requests is experiencing degraded availability. We are continuing to investigate.
8. 19:01 UTC GitHub status page · Investigating API Requests is operating normally.
9. 19:13 UTC GitHub status page · Investigating We are continuing to investigate sporadic authentication failures. We have partially disabled authentication token retries and have seen improvement, and we are monitoring impact before fully applying this mitigation.
10. 20:08 UTC GitHub status page · Investigating We are continuing to investigate sporadic failures affecting Copilot authentication in some applications. Copilot usage via the GitHub CLI and GitHub App are unaffected.
11. 20:22 UTC GitHub status page · Investigating Issues is operating normally.
12. 20:45 UTC GitHub status page · Investigating We are continuing to apply mitigations to address sporadic Copilot authentication failures in some applications. We expect full recovery within the next 30 minutes. Copilot usage via the GitHub CLI and GitHub App are unaffected.
13. 21:15 UTC GitHub status page · Resolved On August 17, 2026, from 13:28–21:15 UTC (7h 47m), GitHub.com experienced elevated errors and latency across Issues, Pull Requests, APIs, Actions, and Copilot. At peak, web/API error rates were approximately 20%, while archive and raw-content downloads reached approximately 50%. SAML/OIDC authentication, SCIM, and Team Sync were also affected, as well as Actions workflows in GHEC with Data Residency that depend on public workflow step definitions hosted on GitHub.com. Most services recovered by 16:36 UTC as our Central US datacenter recovered; Actions was degraded until approximately 18:03…