Unity Build Automation: Planned Vendor Maintenance impacting macOS runners in our AMER region (August 22, 2025)

Planned Vendor Maintenance in the AMER Region (macOS Runners)

Date: Friday, August 22, 2025 22:00 - Saturday, August 23, 2025 04:00 UTC

What’s Happening:
We are conducting a planned hardware vendor maintenance for macOS runners in the AMER region after AMER normal business hours, aimed at delivering improvements in build startup times and build stability.

:alarm_clock: Schedule Overview ( UTC)

Event UTC
macOS EU runner incoming job pause begins 22:00 UTC
End all runner executions in the region 01:00 UTC
Maintenance completion (expected within ~3–4 hrs) ~04:00–04:30 UTC

Customer Guidance - AMER-bound Organizations

  1. AMER region new macOS Jobs will pause and queue beginning Friday, August 22, at 22:00 UTC,
    MacOS runner capacity in the AMER region will be paused 3 hours in advance of maintenance.
    (In-progress jobs will continue to run during the cool-down period)
  2. Runners will be shut down fully at 01:00 UTC
    Any running jobs will be aborted to start maintenance.
  3. Customer Job’s submission planning:
  • Please ensure all macOS AMER-targeted jobs are fully completed before Aug 23, 01:00 UTC.
  • New Jobs submitted after 01:00 UTC will be automatically queued and resumed once maintenance is complete (expected between 04:00–04:30 UTC).
  1. Real-time updates: If maintenance concludes earlier than expected or for progress updates, you can subscribe or monitor here:

FYI: Cool Down Period has begun any new AMER mac Runner jobs will queue until maintenance is complete.