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Thanks in advance. John kernel 5.14.0-611.30.1.el9_7.x86_64 =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D smbclient command (v4.22.4) smbclient -A /etc/silomountuserpw //silo-azwest-fs.verqhaus.com/Invoices works! =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D mount command (v7.2) mount --verbose -t smb3 //silo-azwest-fs.verqhaus.com/Invoices /mnt -o cred= =3D/etc/silomountuserpw returns: Host "silo-azwest-fs.verqhaus.com" resolved to the following IP addresses: = 10.4.0.37 mount.smb3 kernel mount options: ip=3D10.4.0.37,unc=3D\\silo-azwest-fs.verq= haus.com\Invoices,user=3Dsilomountuser@verqhaus.com,domain=3Dverqhaus.com,p= ass=3D******** mount error(95): Operation not supported Refer to the mount.smb3(8) manual page (e.g. man mount.smb3) and kernel log= messages (dmesg) dmesg output with debuggin turned on: [ 9733.032860] CIFS: fs/smb/client/fs_context.c: CIFS: parsing cifs mount o= ption 'source' [ 9733.032902] CIFS: fs/smb/client/fs_context.c: CIFS: parsing cifs mount o= ption 'ip' [ 9733.032914] CIFS: fs/smb/client/fs_context.c: CIFS: parsing cifs mount o= ption 'unc' [ 9733.032919] CIFS: fs/smb/client/fs_context.c: CIFS: parsing cifs mount o= ption 'user' [ 9733.032922] CIFS: fs/smb/client/fs_context.c: CIFS: parsing cifs mount o= ption 'domain' [ 9733.032925] CIFS: fs/smb/client/fs_context.c: Domain name set [ 9733.032928] CIFS: fs/smb/client/fs_context.c: CIFS: parsing cifs mount o= ption 'pass' [ 9733.032931] CIFS: fs/smb/client/cifsfs.c: cifs_smb3_do_mount: devname=3D= //silo-azwest-fs.verqhaus.com/Invoices flags=3D0x0 [ 9733.032937] CIFS: fs/smb/client/connect.c: file mode: 0755 dir mode: 07= 55 [ 9733.032942] CIFS: fs/smb/client/connect.c: VFS: in cifs_mount_get_sessio= n as Xid: 105 with uid: 0 [ 9733.032947] CIFS: fs/smb/client/connect.c: UNC: \\silo-azwest-fs.verqhau= s.com\Invoices [ 9733.032951] CIFS: fs/smb/client/connect.c: generic_ip_connect: connectin= g to 10.4.0.37:445 [ 9733.032963] CIFS: fs/smb/client/connect.c: Socket created [ 9733.032966] CIFS: fs/smb/client/connect.c: sndbuf 16384 rcvbuf 131072 rc= vtimeo 0x1b58 [ 9733.035235] CIFS: fs/smb/client/connect.c: VFS: in cifs_get_smb_ses as X= id: 106 with uid: 0 [ 9733.035241] CIFS: fs/smb/client/connect.c: Existing smb sess not found [ 9733.035244] CIFS: fs/smb/client/connect.c: Demultiplex PID: 97842 [ 9733.035251] CIFS: fs/smb/client/smb2pdu.c: Negotiate protocol [ 9733.035259] CIFS: fs/smb/client/transport.c: wait_for_free_credits: remo= ve 1 credits total=3D0 [ 9733.035271] CIFS: fs/smb/client/transport.c: Sending smb: smb_len=3D260 [ 9733.035925] CIFS: fs/smb/client/connect.c: RFC1002 header 0x134 [ 9733.035937] CIFS: fs/smb/client/smb2misc.c: SMB2 data length 120 offset = 128 [ 9733.035940] CIFS: fs/smb/client/smb2misc.c: SMB2 len 248 [ 9733.035944] CIFS: fs/smb/client/smb2misc.c: length of negcontexts 60 pad= 0 [ 9733.035948] CIFS: fs/smb/client/smb2ops.c: smb2_add_credits: added 1 cre= dits total=3D1 [ 9733.035973] CIFS: fs/smb/client/transport.c: cifs_sync_mid_result: cmd= =3D0 mid=3D0 state=3D64 [ 9733.035986] CIFS: fs/smb/client/misc.c: Null buffer passed to cifs_small= _buf_release [ 9733.035995] CIFS: fs/smb/client/smb2pdu.c: mode 0x3 [ 9733.035997] CIFS: fs/smb/client/smb2pdu.c: negotiated smb3.1.1 dialect [ 9733.036006] CIFS: fs/smb/client/asn1.c: Decoding negTokenInit: unsupport= ed OID 1.3.6.1.4.1.311.2.2.30 [ 9733.036015] CIFS: fs/smb/client/smb2pdu.c: decoding 2 negotiate contexts [ 9733.036020] CIFS: fs/smb/client/smb2pdu.c: decode SMB3.11 encryption neg= context of len 4 [ 9733.036034] CIFS: fs/smb/client/smb2pdu.c: SMB311 cipher type:2 [ 9733.036046] CIFS: fs/smb/client/connect.c: cifs_setup_session: channel c= onnect bitmap: 0x1 [ 9733.036052] CIFS: fs/smb/client/connect.c: Security Mode: 0x3 Capabiliti= es: 0x300067 TimeAdjust: 0 [ 9733.036055] CIFS: fs/smb/client/smb2pdu.c: Session Setup [ 9733.036060] CIFS: fs/smb/client/smb2pdu.c: sess setup type 2 [ 9733.036064] CIFS: fs/smb/client/smb2pdu.c: Fresh session. Previous: 0 [ 9733.036068] CIFS: fs/smb/client/transport.c: wait_for_free_credits: remo= ve 1 credits total=3D0 [ 9733.036076] CIFS: fs/smb/client/transport.c: Sending smb: smb_len=3D136 [ 9733.036557] CIFS: fs/smb/client/connect.c: RFC1002 header 0x11c [ 9733.036581] CIFS: fs/smb/client/smb2misc.c: SMB2 data length 212 offset = 72 [ 9733.036597] CIFS: fs/smb/client/smb2misc.c: SMB2 len 284 [ 9733.036613] CIFS: fs/smb/client/smb2ops.c: smb2_add_credits: added 1 cre= dits total=3D1 [ 9733.036655] CIFS: fs/smb/client/transport.c: cifs_sync_mid_result: cmd= =3D1 mid=3D1 state=3D64 [ 9733.036678] CIFS: Status code returned 0xc0000016 STATUS_MORE_PROCESSING= _REQUIRED [ 9733.036694] CIFS: fs/smb/client/smb2maperror.c: Mapping SMB2 status code= 0xc0000016 to POSIX err -5 [ 9733.036704] CIFS: fs/smb/client/misc.c: Null buffer passed to cifs_small= _buf_release [ 9733.036709] CIFS: fs/smb/client/sess.c: decode_ntlmssp_challenge: negoti= ate=3D0xe2088235 challenge=3D0xe2898235 [ 9733.036715] CIFS: fs/smb/client/smb2pdu.c: rawntlmssp session setup chal= lenge phase [ 9733.036719] CIFS: fs/smb/client/smb2pdu.c: Fresh session. Previous: 0 [ 9733.036762] CIFS: fs/smb/client/transport.c: wait_for_free_credits: remo= ve 1 credits total=3D0 [ 9733.036777] CIFS: fs/smb/client/transport.c: Sending smb: smb_len=3D508 [ 9733.041144] CIFS: fs/smb/client/connect.c: RFC1002 header 0x48 [ 9733.041219] CIFS: fs/smb/client/smb2misc.c: SMB2 data length 0 offset 0 [ 9733.041224] CIFS: fs/smb/client/smb2misc.c: SMB2 len 73 [ 9733.041249] CIFS: fs/smb/client/smb2ops.c: smb2_add_credits: added 1 cre= dits total=3D1 [ 9733.041294] CIFS: fs/smb/client/transport.c: cifs_sync_mid_result: cmd= =3D1 mid=3D2 state=3D64 [ 9733.041315] CIFS: Status code returned 0xc00000bb STATUS_NOT_SUPPORTED [ 9733.041330] CIFS: fs/smb/client/smb2maperror.c: Mapping SMB2 status code= 0xc00000bb to POSIX err -95 [ 9733.041334] CIFS: fs/smb/client/misc.c: Null buffer passed to cifs_small= _buf_release [ 9733.041339] CIFS: VFS: \\silo-azwest-fs.verqhaus.com Send error in SessS= etup =3D -95 [ 9733.041345] CIFS: fs/smb/client/connect.c: VFS: leaving cifs_get_smb_ses= (xid =3D 106) rc =3D -95 [ 9733.041367] CIFS: fs/smb/client/connect.c: VFS: leaving cifs_mount_put_c= onns (xid =3D 105) rc =3D 0 [ 9733.041371] CIFS: VFS: cifs_mount failed w/return code =3D -95