Incident with Actions

Final update

On February 23, 2026, between 15:00 UTC and 17:00 UTC, GitHub Actions experienced degraded performance. During the time, 1.8% of Actions workflow runs experienced delayed starts with an average delay of 15 minutes. The issue was caused by a connection rebalancing event in our internal load balancing layer, which temporarily created uneven traffic distribution across sites and led to request throttling. To prevent recurrence, we are tuning connection rebalancing behavior to spread client reconnections more gradually during load balancer reloads. We are also evaluating improvements to site-level traffic affinity to eliminate the uneven distribution at its source. We have overprovisioned critical paths to prevent any impact if a similar event occurs before those workstreams finish. Finally, we are enhancing our monitoring to detect capacity imbalances proactively.

1. Resolved · Feb 23, 17:03 UTC
   On February 23, 2026, between 15:00 UTC and 17:00 UTC, GitHub Actions experienced degraded performance. During the time, 1.8% of Actions workflow runs experienced delayed starts with an average delay of 15 minutes. The issue was caused by a connection rebalancing event in our internal load balancing layer, which temporarily created uneven traffic distribution across sites and led to request throttling. To prevent recurrence, we are tuning connection rebalancing behavior to spread client reconnections more gradually during load balancer reloads. We are also evaluating improvements to site-level traffic affinity to eliminate the uneven distribution at its source. We have overprovisioned critical paths to prevent any impact if a similar event occurs before those workstreams finish. Finally, we are enhancing our monitoring to detect capacity imbalances proactively.