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Excpetion while Deploying to HoloLens

I try to use the spatial mapping script for Hololens in the MixedRealityToolkit-Unity-2018.9.0-Beta.unitypackage using Unity 2018.2.18f.

=> Create a Gameobject (cube)
=> Add component (Spatial Mapping Renderer)

After successfully Build Unity Project and opening in Visual Studio and trying to deply on the Device:


Exception thrown at 0x7720F2B2 in Working.exe: Microsoft C++ exception: Platform::COMException ^ at memory location 0x026DF7E0. HRESULT:0x80072EE7 The text associated with this error code could not be found. WinRT information: The server name or address could not be resolved

Keeps throwing several times... No occolusion or spatial mapping visualisation visible.

Also did clean solution and redeploy. The exception is thrown on line 579 in excptptr.cpp file.

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