On May 27, 2026, between 18:49 and 19:23 UTC in the West EU region of GitHub Enterprise Cloud, webhooks and actions customers experienced delays. Over the 34m incident, 18.76% of external webhook deliveries exceeded latency thresholds, and Actions run start delays peaked at 42% of workflow jobs taking longer than 5 minutes to begin execution.
The delays were caused by a planned operating system upgrade which updated too many nodes at once, creating excess latency which caused request-timeout errors for the duration of the upgrade. This upgrade process was automated, and all services recovered upon completion.
To prevent future recurrence, we have slowed our process to upgrade a safer number of nodes at a time.
Posted May 27, 2026 - 19:28 UTC
The degradation affecting Actions has been mitigated. We are monitoring to ensure stability.
Posted May 27, 2026 - 19:23 UTC
Issues is operating normally.
Posted May 27, 2026 - 19:23 UTC
Webhooks is operating normally.
Posted May 27, 2026 - 19:23 UTC
Actions is experiencing degraded availability. We are continuing to investigate.
Posted May 27, 2026 - 19:06 UTC
Webhooks is experiencing degraded availability. We are continuing to investigate.
Posted May 27, 2026 - 19:05 UTC
We are investigating reports of degraded performance for Actions, Issues and Webhooks
Posted May 27, 2026 - 19:05 UTC
This incident affected: Webhooks, Issues, and Actions.
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