hi , just a question, as i didn’t came to the point on installing samba on my “supervised”, before i dumped it in a closet 
… but what happens if you in windows open file explore,
rightclick “map network drive” then \ipnumber\share … or \config etc. ? … weird should be 2 backslash, first, but 1 vanish when i click save
edit 2: rightclick network icon
Never mind, as i assume you already are authenticated
But the right method is to map network-drive, at least first time( from a windows machine ) … the other method described, in the doc you want to add, lower security on peoples windows machine, is not a desired method, thou as it’s “supervised” users, i guess they are a minority
By “map network” drive you get another authentication process, where you shall click “sign in with different credentials”, there are “multiple” ways/api’s to “login” to a network share from windows.
click the “search” … right-click M-icon in left corner, the click run… type in in file-explore … type in browser, and yes they do use various “protocol” as Webdav, netbios to mention 2 “desired” for Windows … and when you first authenticated, u can use all ( thou some dont accept netbiosname …
We want to log in to Samba Share ! (mountpoint) … there is the “preferred” way " Map Network Drive" / Change Credential most other places you try to log in with your windows account( and there comes windows-pro as “game-changer” as many running on Admin-account, windows-home has restricted user), and a restricted user-interface, meaning many API’s “home” you have to run as admin (to get full access-rights to etc), therefore you have to right-click it and choose “run-as admin”
Last but not least ( thou i could keep on , but , how should windows knows you want to log into a "Network"smb Share, if you just type the ip \192.168.1.50 ? … it wil try in netbios, webdav, what ever …
Right-click Network icon, choose “Map-Network-Drive” tells windows what to do(what u want access to), which authentication criteria s, and protocol to use , and depending on how the Linux-server/samba is configured, you have to ad \192.168.1.50\sharename (SMB-Mountpoint)… (atleast first time, then your authenticated in Samba, correct , and get whats given to you (all shares) … then you can access it how ever you want, and when authenticated u can either Mapp_shares type ipnummer, where ever you want, and even just “homeassistan-name” few places … felt like i wanted to tell … lol