PI AF and Kerberos

Kerberos is a secure method for authenticating requests for a service on a computer in a network. By default, PI System Explorer and other PI AF clients attempt to connect to the PI AF server (machine hosting PI AF Application Service) using Kerberos authentication. If the PI AF clients cannot connect to the PI AF server using Kerberos security, the authentication method rolls back to the less-secure Windows Challenge/Response (NTLM) authentication.