GitHub Enterprise Cloud EU incident

Incident with GitHub.com

Major Resolved View vendor source →

GitHub Enterprise Cloud EU experienced a major incident on August 17, 2026 affecting prod-weu-01 - Actions (Actions) and prod-weu-01 - Issues (Issues) and 1 more component, lasting 7h 21m. The incident has been resolved; the full update timeline is below.

Started
Aug 17, 2026, 01:54 PM UTC
Resolved
Aug 17, 2026, 09:15 PM UTC
Duration
7h 21m
Detected by Pingoru
Aug 17, 2026, 01:54 PM UTC

Affected components

prod-weu-01 - Actions (Actions)prod-weu-01 - Issues (Issues)prod-weu-01 - API Requests (API Requests)prod-weu-01 - Pull Requests (Pull Requests)

Update timeline

  1. investigating Aug 17, 2026, 01:54 PM UTC

    We are investigating reports of degraded performance for Actions and Actions

  2. investigating Aug 17, 2026, 01:58 PM UTC

    Pull Requests and Pull Requests are experiencing degraded performance. We are continuing to investigate.

  3. investigating Aug 17, 2026, 02:45 PM UTC

    Pull Requests and Pull Requests are operating normally.

  4. investigating Aug 17, 2026, 03:08 PM UTC

    We are currently investigating an issue affecting some GitHub Enterprise Cloud (GHEC) with data residency customers. Workflows that resolve Actions hosted on GitHub.com may fail to successfully download actions.

  5. investigating Aug 17, 2026, 04:59 PM UTC

    The degradation affecting Actions and Actions has been mitigated. We are monitoring to ensure stability.

  6. investigating Aug 17, 2026, 05:36 PM UTC

    Issues and Issues are experiencing degraded performance. We are continuing to investigate.

  7. investigating Aug 17, 2026, 05:50 PM UTC

    Issues and Issues are operating normally.

  8. investigating Aug 17, 2026, 06:11 PM UTC

    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.

  9. investigating Aug 17, 2026, 06:48 PM UTC

    API Requests and API Requests are experiencing degraded performance. We are continuing to investigate.

  10. investigating Aug 17, 2026, 07:01 PM UTC

    API Requests and API Requests are operating normally.

  11. investigating Aug 17, 2026, 07:13 PM UTC

    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.

  12. investigating Aug 17, 2026, 08:08 PM UTC

    We are continuing to investigate sporadic failures affecting Copilot authentication in some applications. Copilot usage via the GitHub CLI and GitHub App are unaffected.

  13. investigating Aug 17, 2026, 08:45 PM UTC

    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.

  14. resolved Aug 17, 2026, 09:15 PM UTC

    This incident has been resolved. Thank you for your patience and understanding as we addressed this issue. A detailed root cause analysis will be shared as soon as it is available.