My solution was to create a user account named ‘anonymous’. I then simply had to share the folder and give permisions to the anonymous user. Verify that “Turn off password protected sharing” is selected in the Network and Sharing Center. Located at Control Panel\Network and Internet\Network and Sharing Center\Advanced sharing settings.
Also have the auto logon turned on on the WDTV.
I had found this problem and seveal suggestions for correcting the issue, but none of them fixed my issue. I am attempting to share files from a second internal drive on a Windows 7 computer. I have a Windows home server which stores most of my movies, which is working great.