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secd.cifsAuth.problem error due to Kerberos authentication problem

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • CIFS/SMB
  • Kerberos

Issue

  • CIFS authentication events where the error KRB5KDC_ERR_PREAUTH_FAILED were logged frequently:
[node-01: secd: secd.cifsAuth.problem:error]: 
vserver (svm1) General CIFS authentication problem. 
Error: Ontap admin cifs authentication basic procedure failed   
[ 27 ms] Successfully connected to ip 10.xx.xx.xx, port 88 using TCP   
[   214] Successfully connected to ip 10.yy.yy.yy, port 88 using TCP 
**[   283] FAILURE: Could not authenticate as 'USER.DOMAIN': Invalid Credentials (KRB5KDC_ERR_PREAUTH_FAILED).   
[   285] Kerberos authentication failed. Skipping NTLM   [   285] Ontap-admin-login-cifs failed
  • On the domain, windows event 4771 is logged:
LogName=Security
EventCode=4771
EventType=0
SourceName=Microsoft Windows security auditing.
Type=Information
RecordNumber=19229734798
Keywords=Audit Failure
TaskCategory=Kerberos Authentication Service
OpCode=Info
Message=Kerberos pre-authentication failed.
  • AIQUM systems do a frequent zapi requests with the wrong user/password every 1 to 5  minutes:
zapi.png
  • End users do not report any functional issues

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