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Windows client unable to access an NTFS resource when UID is not configured in ONTAP

Last Updated:

Applies to

  • ONTAP 9
  • NFS
  • Windows


  • On a new NTFS volume for testing NFS access, when attempting to mount from Windows OS it works fine, but trying to access the network resource fails.
  • The following command is used:

U:\>mount -o mtype=hard -u:UnixUser xx.xx.8.19:/Vol1 z:\

z: is now successfully connected to xx.xx.8.19:/Vol1

  • Trying to access the volume on the z: disk fails with:

Windows cannot access \\xx.xx.8.19\Vol1\

You do not have permission to access \\xx.xx.8.19\Vol1\. Contact your network administrator to request access.

  • There is no Unix host available on the environment, all NFS access is being tested directly from a Windows host.
  • There are no LDAP or NIS servers available in the environment, only the "files" source can be used on the ns-switch.
  • Creating the Unix user on the NFS server and setting up appropriate mapping to a valid Windows user doesn't fix the issue.
  • Capturing a packet trace shows that a different UID is being advertised rather than the one specified on the NFS server.

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