I have been attempting to upgrade my 4.2.e instance to 5.0.a. I am running in to an issue when attempting to configure the Authentication Subsystem to enable passthru authentication to my AD server. I noticed after the install that ldap, ldap-ad and passthru folders were missing from the Authentication folder. I copied over the Authentication folder from my 4.2.e instance, but still receive Failed to communicate with the ldap://domaincontroller.company.com.
I am uncertain were to configure the ldap subsystems in the new 5.0.a instance.