The change in the defaults for LDAP Channel Binding and LDAP Signing Requirements originally announced by Microsoft for March 2020 has been postponed by Microsoft until the second half of 2020.
Customers who operate an AEB Engine, such as for Trade Compliance Management or Carrier Connect, in their own data center with LDAP are advised by AEB of this upcoming change. As a result, plain LDAP (TCP 389) will no longer work. AEB recommends that these customers change from LDAP to LDAPS. As a customer in the AEB data center, you have no need for action.