Incident with Actions - Larger hosted runners

Final update

On October 23, 2025, between 15:54 UTC and 19:20 UTC, GitHub Actions larger hosted runners experienced degraded performance, with 1.4% of overall workflow runs and 29% of larger hosted runner jobs failing to start or timing out within 5 minutes. The full set of contributing factors is still under investigation, but the customer impact was due to database performance degradation, triggered by routine database changes causing a load profile that triggered a bug in the underlying database platform used for larger runners. Impact was mitigated through a combination of scaling up the database and reducing load. We are working with partners to resolve the underlying bug and have paused similar database changes until it is resolved.

1. Resolved · Oct 23, 20:25 UTC
   On October 23, 2025, between 15:54 UTC and 19:20 UTC, GitHub Actions larger hosted runners experienced degraded performance, with 1.4% of overall workflow runs and 29% of larger hosted runner jobs failing to start or timing out within 5 minutes. The full set of contributing factors is still under investigation, but the customer impact was due to database performance degradation, triggered by routine database changes causing a load profile that triggered a bug in the underlying database platform used for larger runners. Impact was mitigated through a combination of scaling up the database and reducing load. We are working with partners to resolve the underlying bug and have paused similar database changes until it is resolved.