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secd.cifsAuth.problem for NULL user due to misconfigured win-name-for-null-user

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590
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • CIFS

Issue

Events logged for secd.cifsAuth.problem due to failed authentication for NULL user
 
Tue May 24 15:48:47 -0500 [cluster-01: secd: secd.cifsAuth.problem:error]: vserver (svm1) General CIFS authentication problem. Error: User authentication procedure failed CIFS SMB2 Share mapping - Client Ip = 10.100.1.101 
   [  0 ms] Login by NULL user 
   [     0] Successfully connected to ip 10.1.1.2, port 445 using TCP 
   [     7] Successfully authenticated with DC dc1.mydomain.local 
   [    22] Encountered NT error (NT_STATUS_PENDING) for SMB command Read 
   [    61] Could not find Windows name '-' 
 **[    61] FAILURE: Unable to lookup Windows User or group '-' set via cifs server option 'win-name-for-null-user' 
   [    61] CIFS authentication failed

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