hi I have the same problem, but nothing answer...
Have you find anything? how do you resolve the problem?
I've just installed the ultimate version of lightroom CC (6), but nothing.
Make sure to have the the MTP/PTP transfer protocol selected in your camera.
My Nikon D810 connects instantly.
Has your combination of Lightroom and Nikon camera ever worked for you?
I found that my D800 wouldn't tether on one PC but would on another. After a bit of Googling and comparing configurations, I found that a number of services need to be running for tethering to work:
- Windows Image Aquisition (WIA)
- Remote Procedure Call (RPC)
- Remote Procedure Call (RPC) Locator (this was manual, and not running)
- RPC Endpoint Mapper
- DCOM Service Process Launcher
- Shell Hardware Detection]
Run the "Services" tool (fron Control Panel -> Administrative Tools, or maybe All Apps -> Windows Administrative Tools) and check that those services are not disabled or manual, and if so try setting them to automatic.
In my case, changing "Remote Procedure Call (RPC) Locator" from manual to automatic fixed the problem.