Incident with Actions - Larger hosted runners
Incident
Report for GitHub
Resolved
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.
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.
Update
Actions is operating normally.
Update
Actions larger runner job start delays and failure rates are recovering. Many jobs should be starting as normal. We're continuing to monitor and confirm full recovery.
Update
We continue to investigate problems with Actions larger runners. We're continuing to see signs of improvement, but customers are still experiencing jobs queueing or failing due to timeout.
Update
We continue to investigate problems with Actions larger runners. We're seeing limited signs of recovery, but customers are still experiencing jobs queueing or failing due to timeout.
Update
We continue to investigate problems with Actions larger runners. Some customers are experiencing jobs queueing or failing due to timeout.
Update
We're investigating problems with larger hosted runners in Actions. Our team is working to identify the cause. We'll post another update by 17:03 UTC.
Investigating
We are investigating reports of degraded performance for Actions
This incident affected: Actions.
Subscribe to our developer newsletter
Get tips, technical guides, and best practices. Twice a month. Right in your inbox.
Subscribe