I tried all recommended steps, different cable, camera firmware update, different usb ports, restarting program and computer etc. Camera is detected and visible under devices when connected but tethering refuses to work. Any help would be greatly appreciated as I am working on portraits and a tether would be invaluable
In order to perform tether in Lightroom with Nikon D7100, you need to have atleast Lightroom 5.2 installed on the computer.
Please check the list of Camera Supported for Tethered Shooting in Lightroom : A list of cameras that can be tethered to Lightroom.
Let me know if it helps.
Thank you for all the assistance - I am researching upgrade options or alternative tethering software