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SMB1 client using NTLM authentication is unable to access ONTAP CIFS share

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • SMB/CIFS
  • NTLM

Issue

  • The problem impacts SMB clients that rely on SMB1 connectivity and NTLM authentication to access the ONTAP CIFS share
  • Network traces capturing the connection attempt from the client show NTLM authentication is failing:

Session Setup AndX Request, User: DOMAIN\USER1

Session Setup AndX Response, Error: STATUS_WRONG_PASSWORD

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