The recommended way of getting all the needed drivers installed is to use the all-in-one Spice guest tools installer which can be found on spice-space.org.

To get USB redirection working on Windows, you need to ...

If you want to manually install them, the QXL driver can be downloaded from this location , agent builds can be found here . You also need the vioserial driver which is distributed with the other virtio-win drivers.