Roon won't play through Kef ls50w on the PC

Roon won’t play through Kef ls50w on the PC, it plays fine on Mac.
I have the same machine (hackintosh) playing Roon through the Mac os to the Kef’s just fine.
However, when I boot into Windows 10 Pro it wont. Roon sees the speakers but wont play any sound. Roon plays fine through the PC output.

I uninstalled Roon and reinstalled. Restarted the machine still no audio to the Kef ls50w.
Roon lost control of device.