FreeBSD 16 nfsd: Unexpected NFS error 'NFS4ERR_NOFILEHANDLE' while probing named attr support

From: Dan Shelton <dan.f.shelton_at_gmail.com>
Date: Tue, 10 Mar 2026 22:38:00 UTC
Hello,

some odd issue with ms-nfs41-client: when connecting to a FreeBSD
16.0-CURRENT main-n284403-895a97c875a0 (installed from
FreeBSD-16.0-CURRENT-amd64-20260224-16822dac32ab-284159-disc1.iso) NFS server:

Windows side:
$ /sbin/nfs_mount -o rw 'F:' 'nfs://42.28.16.228//nfsdata'
Successfully mounted '42.28.16.228@NFS@2049' to drive 'F:'

ms-nfs41-client prints this warning:
204c: nfs41_superblock_getattr: Unexpected NFS error
'NFS4ERR_NOFILEHANDLE' while probing named attr support
(the warning comes from
https://github.com/kofemann/ms-nfs41-client/blob/master/daemon/nfs41_ops.c#L1394)

The Windows "FILE_NAMED_STREAMS" support is OFF then, which breaks our
applications.

Dan
-- 
Dan Shelton - Cluster Specialist Win/Lin/Bsd