When the administrator configures the Active Directory on Pulse Connect Secure and the domain join fails and below logs can be seen in Events Logs :
Active Directory authentication server: Domain join failed
Following Kerberos related logs may appear :
Operation not permitted gss_init_sec_context failed with [Unspecified GSS failure. Minor code may provide more information: Clock skew too great]
An internal error occurred. Failed to join domain: failed to connect to AD: An internal error occurred.