LDAP_STRONG_AUTH_REQUIRED is an LDAP Result Code that Indicates one of the following:
  • In Bind Requests, the LDAP server accepts only strong authentication.
  • In a client request, the client requested an operation such as delete that requires strong authentication.
  • In an Unsolicited Notification of disconnection, the LDAP server discovers the security protecting the communication between the client and server has unexpectedly failed or been compromised.
  • Microsoft Active Directory returns this when LDAP Signing is required and not using TLS

JNDI Clients might see Authentication Not Supported Exception

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