I just noticed that upgrading from 7 to 10 broke the USB-connection with my Nikon D5100. I can't access or transfer the files on my memory card from Windows Exploder or Lightroom 5 when the camera is connected to the computer. Csr Bluetooth Radio Driver Windows 10. A workaround would be to use a card reader or Nikon software to transfer the files but there's also a more serious issue: tethering. Obviously without working USB-connection wired shooting doesn't work and that pretty much messes up my studio work flow.
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The problem seems to be that Microsoft did some changes to MTP-protocol and that was enough to confuse some older cameras. AFAIK Nikon don't deliver USB-drivers so it's up to Microsoft to fix what they broke. Or maybe Nikon could do a firmware update to address this issue of handling the changed transfer protocol. So, heads up if you are considering the upgrade.
I seriously regret that I did. Nothing gained but stupid issues like this. Satyaa wrote: Create a shortcut to 'explorer.exe' (or LR), edit the properties of that shortcut, and try to run it in compatibility mode to simulate a Windows version that worked for you.