Applies to Ontap 9 CIFS/SMB Kerberos Issue All client authentication with Kerberos fails Errors observed in EMS logs : [node-01: secd: secd.conn.auth.failure:debug]: Vserver (svm1) could not authentic...Applies to Ontap 9 CIFS/SMB Kerberos Issue All client authentication with Kerberos fails Errors observed in EMS logs : [node-01: secd: secd.conn.auth.failure:debug]: Vserver (svm1) could not authenticate over the network to server (dcname). Error: Invalid credentials (Service: LDAP (Active Directory), Operation: SiteDiscovery). [node-01: secd: secd.kerberos.tktnyv:debug]: Kerberos client ticket not yet valid for vserver (svm1).