FTP and Virtual Directories

Hi There,

I have a IIS 7 site running on server 2012. IIS is working great for annonomous FTP connections. However, I want to use user isolation with "User name Directory (disable global virtual directories"

I have setup my virtual directory and given it the name "triumphadmin" and pointed this to a physical directory. However when the FTP conncetion comes in i get "530 user cannot login"

My question is where is IIS authenticating the "triumphadmin" user with. I read that it was a local account in computer management but no local accounts are being created in here.

Any help would be much appreciated.

Thanks

Dave