Are you running 8.1 or holding off until you have confirmed that it works? I would try it but I pulled the HD from my latest laptop that came with 8.0 and put in a SSD running Win7 (which I prefer). At some point, when time allows, i may clone the 8.0 drive, poop it back in and download 8.1 to see what all the fuss is about. At that time I will test out the 3CX PBX. But, it may be a while.