Use cases
Software Products E-commerce MSPs Schools Development & Marketing DevOps Agencies Help Desk
Company
Internet Status Blog Pricing Log in Get started free

Outage in CircleCI

Mac jobs failing to start

Resolved Minor
May 31, 2026 - Started 9 days ago - Lasted about 7 hours
Official incident page

Incident Report

We have identified a network outage that is preventing Mac jobs from starting. This include m4pro.medium and m4pro.large resource types. We are working with our infrastructure provider to restore service. We will update this incident as we work to resolve the issue.
Components affected
CircleCI macOS Jobs

Trusted by 1,000+ teams

The Status Page Aggregator with Early Outage Detection

Stop finding out about outages from your users. Monitor 6,320+ cloud services and get alerted the second something breaks.

IsDown status aggregator dashboard
Latest Updates ( sorted recent to last )
RESOLVED 9 days ago - at 06/01/2026 12:45AM

Mac jobs have now fully recovered.

Thank you for your patience during this incident.

MONITORING 9 days ago - at 06/01/2026 12:24AM

We are seeing Mac jobs starting successfully and improved network connectivity to the Mac fleet. We will continue to monitor the recovery.

IDENTIFIED 9 days ago - at 05/31/2026 10:38PM

Mac jobs are continuing to experience failures. Our infrastructure provider is reporting they are experiencing a DDoS attack causing high network latency and packet loss for our Mac fleet. We are working to bring up additional capacity to restore service.

We will continue to update as more information is available.

IDENTIFIED 9 days ago - at 05/31/2026 09:24PM

We are continuing to investigate failures with Mac jobs starting due to high network latency and packet loss. Our engineers remain engaged with our infrastructure provider to restore service.

We will provide another update within the hour, or sooner if circumstances change. We thank you for your patience while our engineers work to resolve this.

IDENTIFIED 9 days ago - at 05/31/2026 08:05PM

We are still seeing failures with Mac jobs starting due to high network latency and packet loss. We will continue to update as we have more information on a resolution.

IDENTIFIED 9 days ago - at 05/31/2026 07:09PM

We are continuing to work on resolving the networking issue for Mac jobs.

IDENTIFIED 9 days ago - at 05/31/2026 06:15PM

We have identified a network outage that is preventing Mac jobs from starting. This include m4pro.medium and m4pro.large resource types.

We are working with our infrastructure provider to restore service.

We will update this incident as we work to resolve the issue.

The Status Page Aggregator with Early Outage Detection

With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.

Start free trial

No credit card required · Cancel anytime · 6320 services available

Integrations with Slack Microsoft Teams Google Chat Datadog PagerDuty Zapier Discord Webhook