What will be the crio-user password when I tried to change vsftp. conf to be run as root

What will be the crio-user password when I tried to change vsftp. conf to be run as root

When you start vm ,a workspace screen will be displayed with Login details such as machine’s IP address, user name , password .
use that password when you want change conf file permissions.

i am getting this error
500 OOPS: config file not owned by correct user, or not a file
please help me out