RN104 - Windows 8.1

I have my RN104 on wired network with every PC in our business. We currently have 2 Windows 8 PC's, 15-20 Windows 7 PC's that all connect without issue.

I recently built a new 8.1 Pro x64 machine that cannot connect to the server via explorer or map the network drive directly.

I have searched and tried most of the available "fixes" available online without any luck including the credentials management, registry modification, private network, home network, etc.

I can currently ping the server and can connect via the web admin login.

My login to win 8.1 is a Microsoft account that has a user name that does not exist on the server but I always try to connect with different credentials. 8.1 machine is a member of "Workgroup" domain by default.

I did update the server to the newest version 6.1.9 firmware today with no change. RAIDar sees the RN104 and when trying to "BROWSE" I receive the error code "The operation being requested was not performed because the user has not been authenticated"

Any help is appreciated!!!