WSE folder access from non-domain PC

Question

I have a Windows Server 2016 Essentials computer in place named "TheServer" with domain name "TheDomain". All is working well when accessed from a Domain-Joined computer.
Through Server Manager, I've created a shared folder named "Scans" and a user named "TheCopier".
Read/write permission is explicitly given to TheCopier for that folder.
Firewall is turned off for all three zones.

In the Sharp copier, I've added an entry "Scan to server" that points to \TheServer\scans\ and uses the credentials for Mydomain\TheCopier.
When somebody walks up to the copier and attempts a scan, the result is "Not Authorized" in the log.

When I go to a non-domain-joined computer and enter \TheServer, I'm asked for credentials so I enter TheDomain\AnAdmin, who is a full domain admin.
Then I get the classic message: "TheServer is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions."

What am I doing wrong?
What else can I try?

Answer 1

I am able to successfully ping TheServer and it resolves to the correct IP address.
I just need to understand why the server will not allow me to log in using TheDomain\AnAdmin or TheDomain.local\AnAdmin or TheDomain\TheCopier.

Can anybody suggest something I should look at?

Answer 2

HI

1.Which disk did the scan file store, is it disk C?

2.If we access below location on domain joined PC by using "thecopieer" account, will the same issue happen?
\TheServer\scans\

3.Please add "everyone" for your shared folder "scan",then check if same issue happen on domain joined computer and san printer.

4.Please check if the resolution in below document can help you.
Can't access shared folders from File Explorer in Windows 10
https://learn.microsoft.com/en-us/troubleshoot/windows-client/networking/cannot-access-shared-folder-file-explorer

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Answer 3

When accessed from a domain-joined computer, everything works normally.
The group Everyone is already given share and read-write permissions.

Anything else I can try?

Answer 4

HI

For example ,the ip address of wse2016 is 192.168.2.20, if we enter below location in explorer on workgroup pc, will the same issue happen?
\192.168.2.20\sharedfolder

Answer 5

I don't understand what you mean by "which disk did the file scan store".
On the server, my C-drive is a small SSD, only for the OS. All data is on the large D-drive.

Yes. The same thing happens when the IP address is used. There are no problems with DNS name resolution.