User Profile Home Directory

Re-installed a server recently that had \\Servername\Shared\Home\%username% that would map a U: drive to the users desktop when they logged in. I used robocopy to keep the files/folders intact and that was fine, I was able to copy them back without any issues. However, when I'm on the server and user profile to set the U: drive to map and load \\ServerName\Shared\Home%username% i get an error that it cannot be found on the network.

I had no issues setting this up the very first time so I'm guessing I am missing a simple step some place. Anyone have experience in setting up a home directory that is mapped to the desktop like this?