SolarWinds Orion does not support secure connections to Active Directory via MSAPI using SSL/TLS. Our computer security department is going to make this mandatory. According to SolarWinds Support, "LDAP over SSL is not yet supported. Feature Request was submitted to the Dev Team about LDAPS, but no official word when it will be added to the Orion Core Platform." It appears that LDAP using SSL is supported (at least there is an option to select SSL in the LDAP configuration under Advanced Active Directory Settings). Please add SSL/TLS to the default MSAPI.