Arduino Leonardo ETH - Driver Installation Issues

Hello Forum,

I have a problem when I try to install the driver for my Leo ETH on an old Win XP PC.
When I try to install them with the *.exe in the drivers-Directory of the IDE (1.6.5-r2), I get numerous errors and the setup fails to install the drivers.

If i try to do it manually, i get the error message "A service installation section in the INF is invalid", and it also can't install the driver.

I already tried older version of the IDE, but I get either the same error or this one: "the specified driver does not contain information about your hardware".

Can anyone help?

Could you provide a link to this board please?