networking - Windows 10 Sharing - Clients ask for Password when password protected sharing turned off?

I hope this is a simple issue for someone to just point me at the right setting, but i'm having issues getting sharing working between PCs on my network. The issue is if any clients try and connect to my server, they're prompted for a username and password despite password-protected sharing being off, and even if i put in the server's username and password, won't allow the clients to connect.

• The Server (called "Ravnica") runs Win 10 Home 1903, is a desktop tower connected via Ethernet.



• The primary Client (called "Innistrad") runs Win 10 Home 1809, is a laptop and can be connected by either Wireless or Ethernet depending on location


• The secondary Client (called "Ixalan") runs Win 10 Home 1903, is a desktop tower connected via Ethernet.

The issue is if either Innistrad or Ixalan try and connect to Ravnica, they're prompted for a username and password, which is both undesirable (as Ixalan is my housemate's PC) and even if Ravnica's admin username and password are put in, it'll not allow access. This is despite all PCs having all of the following set:

• Private network


• Network discovery on


• File and printer sharing on



• Password-protected sharing off


• 128-bit encryption


• Public folder sharing on


• Same Workgroup (called "Multiverse")

All the folders (and printer) i need to share on Ravnica are shared, with Read permissions for "Everyone", with the Microsoft-account-linked user as an admin (which is the only named user on Ravnica)

Why are the clients being prompted for a password in this situation?

Extra data that may help, but i doubt it's relevant

The network is as follows:

{ISP wireless AP/switch/router} <-> {gigabit switch A} <-> {Powerline Adpator} ~~

~~ {Powerline Adpator} <-> {gigabit switch B} <-> {Ravnica}

~~ {Powerline Adpator} <-> {Ixalan}

{Innistrad} is either connected by wireless to {ISP wireless AP/switch/router}, or by a wire to {gigabit switch A}
There are a variety of other non-PC devices attached to all three switches, including the TV, games consoles, a raspberry Pi, etc, but none are configured to use the network share.

EDIT: Just to clarify if either client types \\RAVNICA into an explorer address bar, then it is prompted for a password. I do not even get to see the shared folders.

The folders in question are not under {insert any drive letter here}:/users. The folders are all on the root of a secondary hard disk, and are not considered system folders

the following is set ravnica: