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CIFS access using the format ".\user" fails with 0xC0000466

  1. Last updated
    Oct 15, 2024
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Votes:
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Category:
ontap-9
Specialty:
nas
Last Updated:
10/15/2024, 10:05:06 AM

Applies to

ONTAP 9

Issue

  • Unable to access CIFS share folders while using the format ".\user".
  • The Windows clients also do not prompt "Windows Security" table for re-entering user and password.
  • ONTAP responds 0xC0000466 error to the client Session Setup Request as below.
14424 2021-12-03 22:12:42.608893 0.000037 192.168.XXX.XXX 10.129.XXX.XXX SMB2 612 Session Setup Request, NTLMSSP_AUTH, User: .\user
14482 2021-12-03 22:12:42.614822 0.000010 10.129.XXX.XXX 192.168.XXX.XXX SMB2 77 Session Setup Response, Error: Unknown (0xC0000466)
 
  • EMS Log:

8/20/2024 15:28:09  node1-02 ERROR         secd.cifsAuth.problem: vserver (SVM) General CIFS authentication problem. Error: User authentication procedure failed
CIFS SMB2 Share mapping - Client Ip = 1.1.1.102
  [  0 ms] Login attempt by domain user '.\user' using NTLMv2 style security
  [     0] Using a cached connection to ad-kso11.cbtc.tw
  [     0] Authentication failed with DC AD-KSO11. Not retriable. (Status: 0xc0000064)
  [     0] Login attempt by local user '.\user' using NTLMv2 style security
  [     0] User is not known
  [     1] Using a cached connection to ad-kso12.cbtc.tw
  [     2] Unable to find the NetBIOS domain name for Active Directory '.'
**[     2] FAILURE: CIFS authentication failed
  [     2] Using a cached connection to ad-kso12.cbtc.tw
  [     3] Unable to find the NetBIOS domain name for Active Directory '.'

Note: Inconsistency of error code in packet trace and EMS logs

 

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