Actions Larger Runner Jobs for some customers may be slow to start
On September 14, 2026, between 16:10 and 19:01 UTC, some customers using GitHub Actions larger runners experienced longer-than-normal wait times for jobs to start. During this period, 5.7% of larger-runner jobs were affected. A routine expansion of our compute capacity exposed a bug in how our provisioning system handled capacity records when selecting where to create runner virtual machines. This slowed the creation of new runners, leaving insufficient runner capacity to start affected jobs promptly. We restored normal provisioning by correcting the affected capacity records. We have fixed the underlying capacity-selection bug to prevent this failure from recurring. We have also added alerts for VM-record creation failures associated with this capacity issue.
The latest update from GitHub.
State
Resolved
Started
48 d ago
2026-09-14 18:40 UTC
Lasted
55 min
until 2026-09-14 19:35 UTC
Worst impact
Degraded
Timeline
3 updatesInvestigating
21 min 39%
Monitoring
34 min 61%
Updates
Times in UTCAs posted by GitHub
On September 14, 2026, between 16:10 and 19:01 UTC, some customers using GitHub Actions larger runners experienced longer-than-normal wait times for jobs to start. During this period, 5.7% of larger-runner jobs were affected. A routine expansion of our compute capacity exposed a bug in how our provisioning system handled capacity records when selecting where to create runner virtual machines. This slowed the creation of new runners, leaving insufficient runner capacity to start affected jobs promptly. We restored normal provisioning by correcting the affected capacity records. We have fixed the underlying capacity-selection bug to prevent this failure from recurring. We have also added alerts for VM-record creation failures associated with this capacity issue.
The degradation has been mitigated. We are monitoring to ensure stability.
We are investigating reports of impacted performance for some GitHub services.
GitHub in the last 90 days
Full historyIncidents in 90 days
46
Days with an incident
34
Median duration
1 h 29 min
This incident
38% shorter than the median
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