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Outage in Circle CI

Issues with network routing for Mac jobs

Resolved Major
June 24, 2026 - Started 23 days ago - Lasted about 4 hours
Official incident page

Incident Report

Summary AI Generated

CircleCI experienced a 4-hour major incident where network routing issues caused Mac jobs to fail on outbound requests, including GitHub checkouts. The problem was intermittent and persistent, requiring escalation to their infrastructure provider after initial monitoring showed continued failures. A fix was confirmed by the infrastructure provider and validated through testing, with CircleCI advising affected customers to re-run any failed jobs.

What's happening Our engineers are investigating network routing issues for some Mac jobs. What's impacted Mac jobs that make outbound requests, including checking out from GitHub.
Components affected
Circle CI macOS Jobs

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Latest Updates ( sorted recent to last )
RESOLVED 23 days ago - at 06/25/2026 03:06AM

We are concluding this incident based on a confirmed fix with our infrastructure provider and successful tests. For any customers seeing failed runs, please run again for a successful connection.

MONITORING 23 days ago - at 06/25/2026 02:58AM

A fix has been implemented and we are monitoring the results.

INVESTIGATING 23 days ago - at 06/25/2026 02:54AM

Due to continued reports of intermittent failures and a lack of sustained improvement while in monitoring status, this incident is elevated back to investigating to escalate with our infrastructure provider.

MONITORING 23 days ago - at 06/25/2026 02:20AM

We are continuing to monitor. We still observe a low percentage of intermittent failures. The failure rate is trending down as we continue to monitor. We advise customers to contact CircleCI Support if they see a change in degraded services and increased failure rate.

MONITORING 23 days ago - at 06/25/2026 01:22AM

We are continuing to monitor for any further issues.

MONITORING 23 days ago - at 06/25/2026 01:13AM

Our team is moving this incident to Monitoring status based on significant improvement seen in our tests and low error rate. We are seeing improvement in network routing for Mac jobs and are actively engaged with our infrastructure provider. If your Mac jobs experience network-related failures or degraded service please reach out to CircleCI support.

IDENTIFIED 23 days ago - at 06/25/2026 12:39AM

We are seeing improvement in Mac job network routing.

We will continue to monitor for signs of recovery.

IDENTIFIED 23 days ago - at 06/24/2026 11:56PM

Mac jobs are still seeing intermittent failures with network routing.

We are working with our infrastructure provider to address the networking issues.

IDENTIFIED 23 days ago - at 06/24/2026 11:33PM

We have implemented a change to address the routing issues and are monitoring the results.

INVESTIGATING 23 days ago - at 06/24/2026 11:13PM

What's happening
Our engineers are investigating network routing issues for some Mac jobs.

What's impacted
Mac jobs that make outbound requests, including checking out from GitHub.

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