4 points to create a user to uploade to ftproot..
this user must be an administrator,
and be able to login into the Server as the user with privilidge of write & read..
but that is not enough, need to get the priviledge of write & read of the ftproot folder ..
after all of that, keep in mind that the ftp service shall be set enabled in the firewall..
Configuring FTP server users..
原文：http://www.cnblogs.com/sansna/p/5768498.html