@rkdk: hab ich auch schon gehört - bin dann aber auf das hier gestossen:
Delta44 is now working with Windows 10 64 bit as well as 32 bit. I had started with 6.0.8 driver, tried various older drivers, did several rounds of Windows 10 updates, went back to 6.0.8 driver [which is where I started], and after rebooting system Delta44 is present in both Device Manager and M-Audio Delta Control Panel, without errors.
LG