LDAP port 389 will no longer be allowed to use

Please take note, that in the second half of 2020, Microsoft will apply a new security patch, after which not encrypted or not signed LDAP request to a domain controller will be blocked. 

Please make sure, that the connection over the LDAPs protocol is working with SSL/TLS and the fitting certificate. If everything is prepared, you can contact our Support.

Further information can be found at Microsofts blog.