Pursuant to US Customs’ CSMS# 11-000088 – ACE TSL Implementation, CBP is making a security update to the ACE Secure Data Portal this week.
Customs is discontinuing the use of the SSL protocol while maintaining the use of the TSL protocol, and advises that ACE users ensure that their browsers are TSL compliant. Changing your browser settings is very easy, and illustrated step-by-step instructions can be found here.
CBP strongly recommends that users effect this change by April 28th to avoid interruption of service. If you have any problem connecting to ACE on April 29th, double-check the browser settings to ensure they meet the TSL requirement.
CBP’s official notification is here.