I am not sure sorry, but my guess is that your headset is not properly detected by your pc. If you try to switch and use another usb 2.0 or 3.0 port in your pc it might detect better. Especially if you are using extensions to lengthen your vr cable this could be the case. Us Windows Mixed Reality HMD users using the Oculus store and playing although not owning an Oculus Rift, get a message similar to this one you are getting, every time we forget that we can't launch games from Oculus store due to no (Oculus)headset connected. So we launch it through another program and it works. Hope you solve your problem.