Incident with Actions and Pages

What to do

• Check whether you use GitHub Webhooks, Actions, Pages. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 56m it lasted.

  Anything that failed between 2026-11-04 16:05 UTC and 2026-11-04 17:01 UTC may need a replay.

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Root cause

This incident was caused by a configuration change to an internal event-routing service that unexpectedly paused delivery of several event streams.

Category: Deploy or config change

Updates from GitHub 9

1. investigatingNov 4, 2026, 4:05 PM UTC

   We are investigating reports of degraded performance for Actions and Pages

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2. investigatingNov 4, 2026, 4:11 PM UTC

   We are investigating reports of issues with Actions and Pages. We will continue to keep users updated on progress towards mitigation.

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3. investigatingNov 4, 2026, 4:12 PM UTC

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

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4. investigatingNov 4, 2026, 4:17 PM UTC

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

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5. investigatingNov 4, 2026, 4:34 PM UTC

   We have identified an issue with events that might trigger Actions. We have applied mitigations and are monitoring for recovery at this point. Customers may observe delayed status updates for their jobs.

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6. investigatingNov 4, 2026, 4:45 PM UTC

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

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7. monitoringNov 4, 2026, 4:48 PM UTC

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

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8. monitoringNov 4, 2026, 4:49 PM UTC

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

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9. resolvedNov 4, 2026, 5:01 PM UTC

   On November 4, 2026, between 15:49 UTC and 16:48 UTC, and again between 17:20 UTC and 17:55 UTC, GitHub Actions, Pages, Webhooks, Code Scanning, and Copilot coding agent experienced delays. During this time, Actions workflow runs and job status updates were delayed by up to 25 minutes. Pages deployments dropped to about 4% of normal volume, webhook deliveries dropped to about 58% of normal volume, and Code Scanning analyses and Copilot coding agent sessions were delayed. Delayed events were processed after mitigation. This incident was caused by a configuration change to an internal event-routing service that unexpectedly paused delivery of several event streams. The change depended on feature flags that were not set up as intended, which the service did not handle gracefully. We mitigated the first period by rolling back the configuration change at 16:14 UTC. The code change itself was not reverted by the rollback, so a subsequent deployment reintroduced it. We mitigated the second period at 17:40 UTC by rolling back again, then processed queued events and cleared backlogs. We are taking several steps to prevent a repeat. The routing service will keep its existing behavior when a feature toggle is missing, so a misconfigured flag can no longer pause delivery. We are adding a pre-deploy check that each routing flag exists and is registered under the correct owning service, and we are making flag ownership less error-prone to set. We are also improving alerting so we detect paused event delivery sooner.

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Corrections

None so far.

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