Hololens bootstrapping failed on specific Hololens device

This error only occurs on one out of the three Hololenses we have available here, and it also only appears to be only on my PC.

   Error        DEP6200: Bootstrapping failed. Device cannot be found. 
   SmartDeviceException - Deployment failed because no device was detected. Make 
   sure a device is connected and powered on.  [0x80131500] Dura Demo           

This is a Unity project build using Unity 2017.3.06b with VS15.4.1, Windows SDK 10.16299.15.

Experimental .NET 4.6

Build type XAML

Using the latest Holotoolkit, HUX MRDesignlabs.

So in my experience the HL2 also has this problem sometimes the only thing you can do is use another USB port, use another cable or try to sideload a package from the portal.