On the server, in pappserver.cfg, make following entries:

[FileSystemModule]
PrefixAllow="$CADENAS_DATA","$CADENAS_UPLOAD"
WriteAllow="$CADENAS_UPLOAD"

In the start.env, specify the environment variable CADENAS_UPLOAD.

CADENAS_UPLOAD=$CADENAS/../upload

On the client, in filesystem.cfg make following entry:

[FILESYSTEMS]
$CADENAS/upload="m","wfs://<hostname>:9020/CADENAS_UPLOAD"

In PARTadmin -> AppServer Service -> tabbed page Assign rights enter the desired user as Appserver Administrator (appserver-admin).

Note It has to be a Windows user.

On the tabbed page Rights (psolrights.cfg), assign the right "appserver-writefs" to the user.

"User is allowed to write to writeable filesystems on the server."

Copy, delete and list should work now.

File upload via scripting should work as well now:

dim fso=createobject("scripting.filesystemobject")
stdprint(fso.copyfile("pappserver.exe","$CADENAS/upload/pappserver.exe",1))
stdprint(fso.copyfile("I:\\WEBNLS_DATABASE_BACKUPS\\WEBNLS.bak","$CADENAS/upload/
 WEBNLS.bak",1))

The content is chunked in 1MB steps... Theoretically possible would be as well:

fso.copyfile("<localfile>","wfs://<server>:<port>/CADENAS_UPLOAD/targetfile.ext")

NTLM authentication is only requested if write operations shall be performed. Otherwise it remains with anonymous access for service/fs...