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ONTAP is unable to authenticate CIFS users

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Category:
ontap-9
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nas
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Applies to

  • ONTAP 9
  • CIFS

Issue

  • CIFS users are unable to connect to a share due to netlogon authentication failure  with domain controller
    • secd logs
      info :  Cannot contact any KDC for requested realm (KRB5_KDC_UNREACH) Failed to initiate Kerberos authentication. Trying NTLM.
      ERR  :  SMB2 response has NT error 0xc0000016  { in ParseSmb2HeaderResponse()
      ERR  :  Encountered NT error (NT_STATUS_AUTH_LOGON_FAILURE) for SMB command SessionSetup
      ERR  :  SMB2 response has NT error 0xc000006d
      debug:  Connected but failed to authenticate with DC <dc_name>
      info :  Unable to connect to LSA service on <dc_name>
    • Wireshark Capture:
      Microsoft Network Logon, NetrServerAuthenticate2 Return code: STATUS_ACCESS_DENIED (0xc0000022)

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