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Outage in GitHub

Incident with GitHub.com

Resolved Major
August 17, 2026 - Started about 15 hours ago - Lasted about 8 hours
Official incident page

Incident Report

Summary AI Generated

GitHub experienced a major 7.7-hour outage on August 17, 2026, affecting nearly all core services including API Requests, Pull Requests, Issues, Actions, Git Operations, Webhooks, GitHub Pages, and Copilot. At peak impact, web and API traffic saw ~20% error rates, archive and raw content downloads hit ~50% error rates, and SAML/OIDC authentication, SCIM, and Team Sync were also disrupted. GitHub identified and corrected the root cause, applied mitigations including partially disabling authentication token retries to address residual sporadic auth failures, and fully resolved the incident by 21:15 UTC.

We are investigating reports of impacted performance for some GitHub services.

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Latest Updates ( sorted recent to last )
RESOLVED about 8 hours ago - at 08/17/2026 09:15PM

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.

INVESTIGATING about 8 hours ago - at 08/17/2026 08:45PM

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.

INVESTIGATING about 8 hours ago - at 08/17/2026 08:22PM

Issues is operating normally.

INVESTIGATING about 9 hours ago - at 08/17/2026 08:08PM

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

INVESTIGATING about 10 hours ago - at 08/17/2026 07:13PM

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.

INVESTIGATING about 10 hours ago - at 08/17/2026 07:01PM

API Requests is operating normally.

INVESTIGATING about 10 hours ago - at 08/17/2026 06:48PM

API Requests is experiencing degraded availability. We are continuing to investigate.

INVESTIGATING about 10 hours ago - at 08/17/2026 06:23PM

The degradation affecting Git Operations has been mitigated. We are monitoring to ensure stability.

INVESTIGATING about 11 hours ago - at 08/17/2026 06:11PM

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.

INVESTIGATING about 11 hours ago - at 08/17/2026 05:36PM

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

INVESTIGATING about 11 hours ago - at 08/17/2026 05:34PM

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.

INVESTIGATING about 11 hours ago - at 08/17/2026 05:30PM

Git Operations is experiencing degraded performance. We are continuing to investigate.

INVESTIGATING about 12 hours ago - at 08/17/2026 04:59PM

The degradation affecting API Requests, Actions, Git Operations, Issues, Pages, Pull Requests and Webhooks has been mitigated. We are monitoring to ensure stability.

INVESTIGATING about 12 hours ago - at 08/17/2026 04:36PM

We identified the problematic component and have taken corrective actions. There are strong signs of recovery but we are still working to completely restore service, with error rates still remaining slightly elevated. We will post further updates as recovery continues.

INVESTIGATING about 13 hours ago - at 08/17/2026 04:16PM

We are experiencing high error rates around 20% for web experiences and api traffic. Archive downloads and raw repository content downloads are experiencing an approximate 50% error rate. SAML and OIDC authentication, SCIM, and Team Sync are also impacted. We are still working to identify the root cause and will continue to post updates as we learn more and perform mitigation.

INVESTIGATING about 13 hours ago - at 08/17/2026 03:42PM

We are experiencing high error rates around 20% for web experiences and api traffic. Archive downloads and raw repository content downloads are experiencing an approximate 50% error rate. SAML and OIDC authentication, SCIM, and Team Sync are also impacted. We are currently performing mitigations and will post updates as we progress.

INVESTIGATING about 13 hours ago - at 08/17/2026 03:40PM

Webhooks is experiencing degraded performance. We are continuing to investigate.

INVESTIGATING about 13 hours ago - at 08/17/2026 03:21PM

Git Operations is experiencing degraded performance. We are continuing to investigate.

INVESTIGATING about 14 hours ago - at 08/17/2026 03:10PM

Pages is experiencing degraded performance. We are continuing to investigate.

INVESTIGATING about 14 hours ago - at 08/17/2026 03:01PM

API Requests is experiencing degraded availability. We are continuing to investigate.

INVESTIGATING about 14 hours ago - at 08/17/2026 02:58PM

Webhooks is experiencing degraded availability. We are continuing to investigate.

INVESTIGATING about 14 hours ago - at 08/17/2026 02:58PM

We are experiencing high error rates around 20% for web experiences and api traffic. Archive downloads and raw repository content downloads are experiencing an approximate 50% error rate. SAML and OIDC authentication, SCIM, and Team Sync are also impacted. We are currently performing mitigations based on our investigation thus far and are monitoring for improvement.

INVESTIGATING about 14 hours ago - at 08/17/2026 02:58PM

Actions is experiencing degraded availability. We are continuing to investigate.

INVESTIGATING about 14 hours ago - at 08/17/2026 02:54PM

Pull Requests is experiencing degraded availability. We are continuing to investigate.

INVESTIGATING about 14 hours ago - at 08/17/2026 02:49PM

Issues is experiencing degraded availability. We are continuing to investigate.

INVESTIGATING about 14 hours ago - at 08/17/2026 02:45PM

Pull Requests is experiencing degraded availability. We are continuing to investigate.

INVESTIGATING about 14 hours ago - at 08/17/2026 02:31PM

Copilot is experiencing degraded availability. We are continuing to investigate.

INVESTIGATING about 14 hours ago - at 08/17/2026 02:24PM

We are experiencing high error rates around 20% for web experiences and api traffic. Archive downloads and raw repository content downloads are experiencing an approximate 50% error rate. SAML and OIDC authentication, SCIM, and Team Sync are also impacted. Investigations are on-going and we will continue to provide updates as we discover more information.

INVESTIGATING about 15 hours ago - at 08/17/2026 02:04PM

We are experiencing high error rates around 20% for web experiences and api traffic. Archive downloads and raw repository content downloads are experiencing an approximate 50% error rate. Investigations are on-going into the root cause, and updates will continue to be provided as we investigate.

INVESTIGATING about 15 hours ago - at 08/17/2026 01:58PM

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

INVESTIGATING about 15 hours ago - at 08/17/2026 01:46PM

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

INVESTIGATING about 15 hours ago - at 08/17/2026 01:45PM

We are seeing an approximate 20% error rate across numerous experiences including Pull Requests, Issues, and others. Investigations are currently under way and we will be posting updates as they become available

INVESTIGATING about 15 hours ago - at 08/17/2026 01:44PM

Webhooks is experiencing degraded performance. We are continuing to investigate.

INVESTIGATING about 15 hours ago - at 08/17/2026 01:42PM

Actions is experiencing degraded performance. We are continuing to investigate.

INVESTIGATING about 15 hours ago - at 08/17/2026 01:41PM

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

INVESTIGATING about 15 hours ago - at 08/17/2026 01:40PM

We are investigating reports of impacted performance for some GitHub services.

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