FTP authorization with asp.net

I try to publish an FTP site based on asp.net 4 through IIS. I enabled basic Authentification and disable Anonymous Authentification.  in FTP authorization I enabled a windows acount (which I created) named:FTP.

when I try to log in thruogh cmd I get an error. This is the code in cmd:

"C:\Windows\system32>ftp 10.100.101.100 Connected to 10.100.101.100.

220 Microsoft FTP Service User (10.100.101.100:(none)): FTP

331 Password required for FTP. Password:

530-User cannot log in. Win32 error: Logon failure: unknown user name or bad password.

Error details: Anonymous authentication is not allowed.

530 End

Login failed. "

any ideas why doesn't it succeed login?

thank you!