Windows 10, Server 2012r2 cannot access NAS 204 as a drive, but can as a ping or HTTP.

 Model: ReadyNAS 204 Name: nas Status: Healthy Antivirus: 6/17/2017, 5:13:51 AM Firmware: 6.7.4 : June 17, 2017 12:33:01 PM

It's not a member of the domain?

 Running Diagnose:

The remote device or resource won't accept the connection Detected 
The device or resource (10.0.0.87) is not set up to accept connections on port "The File and printer sharing (SMB)".
The computer or device you are trying to reach is available, but it doesn’t support what you’re trying to do. This might be a configuration issue or a limitation of the device.

Tried refreshing the Active Directory Accounts (but they are listing correctly, so I'm of the opinion that it is communicating...)

Microsoft Windows [Version 10.0.15063]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\Users\Edmund>ping nas

Pinging nas.0EFBH.local [10.0.0.87] with 32 bytes of data
Reply from 10.0.0.87: bytes=32 time=1ms TTL=64
Reply from 10.0.0.87: bytes=32 time<1ms TTL=64
Reply from 10.0.0.87: bytes=32 time<1ms TTL=64
Reply from 10.0.0.87: bytes=32 time<1ms TTL=64

Ping statistics for 10.0.0.87:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 1ms, Average = 0ms

C:\Users\Edmund>ping nas.0efbH.local

Pinging nas.0efbH.local [10.0.0.87] with 32 bytes of data
Reply from 10.0.0.87: bytes=32 time<1ms TTL=64
Reply from 10.0.0.87: bytes=32 time<1ms TTL=64
Reply from 10.0.0.87: bytes=32 time<1ms TTL=64
Reply from 10.0.0.87: bytes=32 time<1ms TTL=64

Ping statistics for 10.0.0.87:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\Users\Edmund>net use \\nas
System error 53 has occurred.

The network path was not found.

C:\Users\Edmund>net use \\10.0.0.87
System error 53 has occurred.

The network path was not found.

C:\Users\Edmund>net use \\10.0.0.88
System error 53 has occurred.

The network path was not found.

C:\Users\Edmund>

 And yet using (Windows Media Connect compatible (ReadyNAS)):  

This PC\nas: ReadyNAS 204  gives 

+\Browse Folders

+\Music

+\Pictures

+\Video 

(But will NOT share all the folders)

But access via the IP or name...  doesn't work.

Deleting the Active Directory doesn't work.

Last time I reset to factory defaults, but I don't want to copy / safe / restore all that data.... again.

suggestions?