I am shooting tethered to a Windows 8 laptop which worked great until this morning when the tethered capture stopped working. The computer itself can view the D800 under "Portable Devices" in the Device Manager but Lightroom 5 cannot.

My guess is that Windows is somehow taking control of the camera and not allowing Lightroom 5 to access it.

We tried to tether using different USB ports, different USB cables, and a separate D800 camera all with no luck. Also, the tethers work fine on another Mac. We also tried to restart the Windows laptop with no luck.

How might this be fixed?