ACE Modernized Portal Production Maintenance Window from September 8 at 5:00am to September 9 at 7:00am ET

CSMS # 53185931 - ACE Modernized Portal Production Maintenance Window from September 8 at 5:00am to September 9 at 7:00am ET U.S. Customs and Border Protection sent this bulletin at 09/06/2022 05:22 PM EDT CSMS # 53185931 - ACE Modernized Portal Production Maintenance Window from September 8 at 5:00am to September 9 at 7:00am ET There will be an ACE Modernized Portal Production Maintenance Window from September 8 at 5:00am to September 9 at 7:00am ET. You may be unable to access the Modernized Portal during this time. If after the window you are unable to access the portal, please close your browser, clear your cache, and try again.