ACE Certification Out-of-Cycle Extended Maintenance Window – October 17, 2026, 8:00 AM–9:00 PM ET
CBP has announced an extended, out-of-cycle invasive maintenance window for the ACE Certification environment on October 17, 2026, running from 8:00 AM to 9:00 PM ET — a 13-hour outage. The extended duration signals more substantive system work than a routine window.
We view the length of this window as notable; our position is that any ACE certification or integration testing dependent on that environment should be rescheduled away from October 17.
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