[Samba] error when trying to copy file from samba share to old Windows CE share

[Rowland penny]

On 18/06/2019 14:55, Dan Arena via samba wrote:
> Hello,
>
> This error started after upgrading my distro(did a fresh install of
> fedora 30 server edition), which upgraded samba from 4.1.20 to 4.10.4.
> If I try to copy a file using a Windows 7 PC from the samba share to
> an old Windows CE share (on a CNC router table, so can't upgrade it)
> it tells me:
>
> An unexpected error is keeping you from copying the file. If you
> continue to receive this error, you can use the error code to search
> for help with this problem.
>
> Error 0x8007007C: The system call level is not correct.
>
> It shows this every time and refuses to copy the file. I am able to
> copy the file from the samba share to the Windows PC just fine, and I
> can read the file contents. I also tried then copying the file from
> the Windows 7 PC to the Windows CE share and it still gives the error.
> I am able to copy any other file from the Windows 7 PC to the Windows
> CE share as long as it didn't originate from the samba share. The
> smb.conf is almost exactly the same on the new server as my old server
> that didn't have this issue. The only thing I had to add to get it
> working with some of the windows PCs was "ntlm auth =
> ntlmv1-permitted". This is a simple file share, no DC/AD setup.
>
> Searching online for information about this error code did not turn up
> much. Only interesting thing I found was at
> https://docs.microsoft.com/en-us/windows/desktop/adsi/win32-error-codes-for-adsi-2-0
> where it mentions 0x8007007C could also be "LDAP_PROTOCOL_ERROR".
>
> Here is my smb.conf:
>
> [global]
>          workgroup = MYGROUP
>          server string = Main File Server
>          security = user
>          passdb backend = tdbsam
>          ntlm auth = ntlmv1-permitted
>          local master = yes
>          os level = 66
>          preferred master = yes
>          wins support = yes
>
>          load printers = no
>
>          log file = /var/log/samba/log.%m
>          # maximum size of 10MB per log file, then rotate:
>          max log size = 10000
>
> [homes]
>          comment = Home Directories
>          valid users = %S, %D%w%S
>          browseable = No
>          read only = No
>          inherit acls = Yes
>
> [fileshare]
>     comment = Public Share
>     path = /share/fileshare
>     public = no
>     writable = yes
>     valid users= @fileshare
>     printable = no
>     force create mode = 0660
>     force directory mode = 0770
>     force group = fileshare
>
>
> Thanks,
> Dan
>
Try adding 'client max protocol = NT1' to [global] in your smb.conf

Rowland