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CIFS shares become inaccessible after disabling NTLM on AD Domain

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • CIFS/SMB
  • Kerberos
  • NTLM

Issue

  • After disabling NTLM on the storage and AD Domain multiple SMB shares became inaccessible.
  • The LDAP connection to the domain controller from the NetApp system failed, resulting in the following error:
Error: Validate the Ldap configuration procedure failed
[0ms] Hostname found in Name Service Cache
[1] Entry for host-address: 192.168.216.10 not found in the current source: FILES. Ignoring and trying next available source
[1] Source: DNS unavailable. Entry for host-address: 192.168.216.10 not found in any of the available sources
[1] Hostname found in Name Service Cache
[2] Entry for host-address: 192.168.216.9 not found in the current source: FILES. Ignoring and trying next available source
[2] Source: DNS unavailable. Entry for host-address: 192.168.216.9 not found in any of the available sources
[2] Resolved LDAP servers: 192.168.216.10, 192.168.216.9. Vserver: -1
[3] Failed to initiate Kerberos authentication. Trying NTLM.
[5] Unable to connect to LDAP (NIS & Name Mapping) service on (Error: Invalid credentials)
[6] Failed to initiate Kerberos authentication. Trying NTLM.
[8] Unable to connect to LDAP (NIS & Name Mapping) service on (Error: Invalid credentials)
[8] No servers available for LDAP_NIS_AND_NAME_MAPPING, vserver: -1, domain: .
**[8] FAILURE: Unable to make a connection (LDAP(NIS & Name Mapping):), Result: RESULT_ERROR_SECD_NO_SERVER_AVAILABLE.

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