Hello everyone.

We have decided to phase out the Mixed Reality Forums over the next few months in favor of other ways to connect with us.

The first way we want to connect with you is our mixed reality developer program, which you can sign up for at https://aka.ms/IWantMR.

The plan between now and the beginning of May is to clean up old, unanswered questions that are no longer relevant. The forums will remain open and usable.

On May 1st we will be locking the forums to new posts and replies. They will remain available for another three months for the purposes of searching them, and then they will be closed altogether on August 1st.

So, where does that leave our awesome community to ask questions? Well, there are a few places we want to engage with you. For technical questions, please use Stack Overflow, and tag your questions using either hololens or windows-mixed-reality. If you want to join in discussions, please do so in the HoloDevelopers Slack, which you can join by going to https://aka.ms/holodevelopers. And always feel free to hit us up on Twitter @MxdRealityDev.

unreal engine 4 and hololens

Hi. We are developing a game with Unreal Engine 4 UWP fork:


I want to use windows runtime components in my code, but I dont know how. Has anyone any experience in this?

Best Answer


  • Jimbohalo10Jimbohalo10 ✭✭✭
    edited January 2017

    This post should help you then Unreal Engine integration

    No doubt this link to Unreal support will get you started Unreal Engine 4 is available for Win10 UWP app dev now

    They all start somewhere code in language other than C#?

    These link were obtained just by typing "Unreal" into the search bar above at the top for more useful information.

    If it works in UWP it will probably work in HoloLens Emulator to

    Install the tools first they MUST be installed in SEQUENCE

    I don't have experience of this but UNREAL integration would be interesting project, BUT it would be using low level DirectX programming the Sharp DX

  • So Unreal Engine 4.14 has been running in UWP for nearly a week now, in fact this is documented in a posting on the Unreal Engine support forum

    The new problems moving onto HoloLens are the need launch into the HoloLens Emulator instead of install a Windows Store package on Windows 10 UWP.
    There is a further problem that the packager looks at your graphics card and configures this during package creation, this is because the NVidia graphics card is the standard for XBOX ONE.

    Please remember Unreal Engine is an Visual C++ project NOT C# as per Unity Engine.

    There is still a long way to go to get HolographicSpatialMapping in VC++ working.

    Finding a way to get a Unreal Engine (UE4Game in UWP) app to run in the HoloLens Emulator is the next big challenge


    To get his far you need to be invited to join Epic Games support group.
    Cross link your Epic invite to GitHub and wait for an invite from Epic Games Admin to be added to the developers group.

    1. GitHub clone into Visual Studio 2015, Compile the Unreal 4.14 engine from source apply patches.
    2. GitHub clone into Visual Studio 2015, MICROSOFT_UWP_UNREAL
    3. Use the just built Unreal Engine to supply the bootstrap code (100 dll)to install the MICROSOFT_UWP_UNREAL studio clone which is private and gives a 404 web page error if not invited
    4. Build the MICROSOFT_UWP_UNREAL clone in Visual Studio 2015.
    5. Sort out the VC++ assertion errors.
    6. Learn basic use of the Unreal Editor, that's how to select UWP Windows, Windows, Xbox platforms and Selecting the Windows 10 UWP SDK.
    7. Find at least 85GB each (190GB) for the GitHub clones when built
    8. Have patience each run can over 1 hour 30 minutes, during which the PC is CPU bound 95%

    The good this is you do not need to use any C++ Windows Runtime components (Windows 8.1and .Net 4.6) as the were obsoleted out of (UWP) .Net Foundation Core (.Net 5.2)

Sign In or Register to comment.