# Intermittent networking failures across GitHub-hosted Actions runners

DevFeed: [Intermittent networking failures across GitHub-hosted Actions runners](<https://devfeed.tech/articles/intermittent-networking-failures-across-github-hosted-actions-runners-75952.md>)

Original publisher: [Read original article](<https://www.githubstatus.com/incidents/x696x0g4t85l>)

Published: 2025-12-18T16:33:00Z

Content type: news

Language: en

Sources: [GitHub Status - Incident History](<https://devfeed.tech/sources/github-status-incident-history.md>)

Topics: [intermittent failures](<https://devfeed.tech/topics/intermittent-failures.md>), [GitHub](<https://devfeed.tech/topics/github.md>), [Load Balancing](<https://devfeed.tech/topics/load-balancing.md>), [GCP outage lessons learned](<https://devfeed.tech/topics/gcp-outage-lessons-learned.md>)

Tags: [github-actions](<https://devfeed.tech/tags/github-actions.md>), [incident](<https://devfeed.tech/tags/incident.md>), [intermittent-failures](<https://devfeed.tech/tags/intermittent-failures.md>), [network](<https://devfeed.tech/tags/network.md>), [networking](<https://devfeed.tech/tags/networking.md>), [packet](<https://devfeed.tech/tags/packet.md>), [recovery](<https://devfeed.tech/tags/recovery.md>), [region](<https://devfeed.tech/tags/region.md>), [reports](<https://devfeed.tech/tags/reports.md>), [request](<https://devfeed.tech/tags/request.md>), [resolved](<https://devfeed.tech/tags/resolved.md>), [runner](<https://devfeed.tech/tags/runner.md>), [self-hosted](<https://devfeed.tech/tags/self-hosted.md>), [us](<https://devfeed.tech/tags/us.md>), [utc](<https://devfeed.tech/tags/utc.md>), [workflow](<https://devfeed.tech/tags/workflow.md>)

## AI overview

On December 18, 2025, packet loss between GitHub-hosted Actions runners in West US and a GitHub edge site caused intermittent GitHub API timeouts and failures in runner setup and workflow execution. About 1.5% of larger and standard hosted-runner jobs in the region, or 0.28% of all Actions jobs, were affected. GitHub routed traffic away from the edge site by 17:11 UTC and said it would improve early detection and mitigation of cross-cloud connectivity issues.

## Source excerpt

On December 18th, 2025, from 08:15 UTC to 17:11 UTC, some GitHub Actions runners experienced intermittent timeouts for Github API calls, which led to failures during runner setup and workflow execution. This was caused by network packet loss between runners in the West US region and one of GitHub's edge sites. Approximately 1.5% of jobs on larger and standard hosted runners in the West US region were impacted, 0.28% of all Actions jobs during this period. By 17:11 UTC, all traffic was routed away from the affected edge site, mitigating the timeouts. We are working to improve early detection of cross-cloud connectivity issues and faster mitigation paths to reduce the impact of similar issues in the future.