Xerox Workcentre 7830 Scan to File via SMB

This is a small office with 4 Windows 10 computers and a Xerox Workcentre 7830 Printer, Scanner, Fax machine.
The office practice is to scan documents into a "scans" file folder on each computer.
The address book lists each computer.
They are generally addressed via their fixed IP address on the LAN subnet.
As nearly as I can tell, the Sharing, Security settings for the folders are the same.
The file sharing SMB IN and OUT port 443 are the same on the Windows firewalls.
File sharing and security is generally for Everyone and Guest.  I don't think that Everyone would help but it's there.
Networking is set to not require passwords for file shares.

Some computers have been having intermittent scan results.
Some scans (or today, almost all scans) are failing on 3 out of the 4 computers.
One computer continues to work.
There is nothing much to say about the physical network - all the computers are homed into a single router as is the printer.

The printer controls and tools seem to be failry simple and I haven't found any logs to examine, etc.

What should I be using and looking for to fix this?
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Fred MarshallPrincipalAsked:
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Jason JohanknechtIT ManagerCommented:
Make sure the Network type is not set to PUBLIC.  They must be PRIVATE.  Also check your antivirus/firewall.  Try disabling the firewall for testing purposes.  I have never tried working with Windows 10 and disabling the password requirement, so not sure if that is a concern.  Can each computer that fails ping and bring up the web interface of the Xerox?
Fred MarshallPrincipalAuthor Commented:
Yes, the network type is PRIVATE.  
I've not tried disabling the firewall but have checked the port rules are enabled.  Not a bad idea though...
All of the computers can ping and open the web interface of the Xerox.

I'm doing this remotely now so would like a way to test the file transfer without loading paper.
Jason JohanknechtIT ManagerCommented:
What antivirus/firewall are you using?  I have not had any issues with Xerox with most common AV suites.
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Jason JohanknechtIT ManagerCommented:
Except Symantec End Point for scanning.  I will get you that information if that is your AV.
Fred MarshallPrincipalAuthor Commented:
It appears that the issue here was file sharing and settings.
We had been using the Guest account on all the computers and now it seems that's gone.
Why it took so long to encounter this (many scans each day) is a mystery to me!

Anyone know how to test from a remote connection / no paper handling?
How about faxes?

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Jason JohanknechtIT ManagerCommented:
Asker, resolved his own question.
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