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NFS access is getting denied after enabling "auth-sys-extended-groups"

Last Updated:

Applies to

  • ONTAP 9
  • NFS 


  • After enabling the NFS option  auth-sys-extended-groups, the NFS access from client is getting denied
  • EMS error about unix credential reported
secd.authsys.lookup.failed:error: Unable to retrieve credentials for UNIX user with UID (x) on Vserver (SVM) for client with IP address (y).
  • Packet trace shows:
816053 NFS 124 16 V3 ACCESS Call (Reply In 816054), FH: 0x552b00cd, [Check: RD LU MD XT DL]
816054 NFS  24 16 V3 ACCESS Reply (Call In 816053) RPC Auth Error: (client must begin new session)
  • Packet trace RPC details:

Reject State: AUTH_ERROR (1)

Auth State: client must being new session (2)


  • UserID cannot be resolved:

::> set -privilege advanced

::*> vserver services name-service getxxbyyy getpwbyuid -vserver svm1_ontap91 -userID 998

Error: command failed: Failed to resolve 998. Reason: Entry not found for "userid: 998".

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