After creating "Blank App(Windows Universal)" targeting Windows Phone 10 in Visual Studio 2015 RC and tried to deploy it to the device (and have changed configuration to ARM for that exactly purpose) I've got the erro as shown below:

Error: DEP0001 : Unexpected Error: A Prerequisite for an install could not be satisfied. (Exception from HRESULT: 0x80073CFD)

Solution:

In Package.appxmanifest, change the TargetDeviceFamily to the following:

<TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.1.0" MaxVersionTested="10.0.1.0" />