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Certain unix users with many groups unable to access data in ONTAP 9

Last Updated:

Applies to

  • ONTAP 9
  • Unix Security Style


  • AUTH_SYS extended groups is enabled and correctly configured
  • Unix user with more than groups than the configured limit of extended groups fails to access data
  • Alternatively, Windows user maps to a Unix user with more than the configured limit of extended groups and fails to access data
  • On MacOS, the error observed is There was a problem connecting to the server
  • Access works for other users belonging to fewer groups
  • Packet trace shows STATUS_UNSUCCESSFUL on the tree connect for CIFS access


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