Linux client to Windows server

Is linux client compatible with windows urbackup server?

I have linux server with no GUI that needs to do backup, atm in LAN i only have windows urbackup server

When i compiled linux client i configured with command

./configure --enable-headless

I get this error when typing this command

urbackupclientbackend -i - v debug

image
Linux client successfully connect to Windows server, but Windows server is reporting Unknown client on my Linux client machine.

EDIT:

problem is when i added new client on servers web, i used Discover new client via IP/hostname hint instead Add new Internet client/client behind NAT

Now i must find a way how to setup backup directory on linux client, is it done on settings.cfg ?