When I build the MixedRealityToolkit-Unity sample project, I faced the following error

[tamizhuser]

Assets\MixedRealityToolkit.Providers\WindowsMixedReality\WindowsMixedRealityArticulatedHand.cs(418,73): error CS0246: The type or namespace name 'HandJointKind' could not be found (are you missing a using directive or an assembly reference?)

Assets\MixedRealityToolkit.Providers\WindowsMixedReality\WindowsMixedRealityArticulatedHand.cs(111,17): error CS0246: The type or namespace name 'HandMeshObserver' could not be found (are you missing a using directive or an assembly reference?)

Assets\MixedRealityToolkit.Providers\WindowsMixedReality\WindowsMixedRealityArticulatedHand.cs(382,33): error CS0246: The type or namespace name 'HandJointKind' could not be found (are you missing a using directive or an assembly reference?)

Assets\MixedRealityToolkit.Providers\WindowsMixedReality\WindowsMixedRealityArticulatedHand.cs(412,26): error CS0246: The type or namespace name 'JointPose' could not be found (are you missing a using directive or an assembly reference?)

[genereddick]

See @keveleigh's comment on #3844. Looks like you need to make sure you are on Windows 18362.

[Cris21395]

Hi @keveleigh

For Hololens 1, is it needed to be on Windows 18362?

[genereddick]

@Cris21395 I think it is a requirement for MRTK v2 -- at least as of the RC1 when they merged the code in for the HL2 -- so it impacts HoloLens 1 as well. I had the same issue and it was resolved by updating the Windows version.

But @keveleigh can weigh in if otherwise.

[Cris21395]

Thanks a lot @genereddick for your prompt reply. I thought that updating the windows version could resolve my problem, but I wanted to be sure before doing it.

[tamizhuser]

Hi @keveleigh

For Hololens 1, is it needed to be on Windows 18362?
Thankyou @keveleigh

[tamizhuser]

@Cris21395 I think it is a requirement for MRTK v2 -- at least as of the RC1 when they merged the code in for the HL2 -- so it impacts HoloLens 1 as well. I had the same issue and it was resolved by updating the Windows version.

But @keveleigh can weigh in if otherwise.

Thank you @genereddick

[Avalin]

Same problem here on HoloLens 1 still, despite running on Windows 18362.30

[david-c-kline]

@genereddick is correct, the 18362 SDK is a compile time requirement for MRTK v2. This is necessary to enable support for HoloLens 2 features.

At runtime, the applications will run on HoloLens 1 without need for a new operating system.

[tamizhuser]

See @keveleigh's comment on #3844. Looks like you need to make sure you are on Windows 18362.

Now, I am udate window 18875 but not solve the problem

[Ariel-Feldman]

So, installing the 18362 SDK using the insider program do make the build success. the problem now is that that the Hololns1 don't have this SDK version, an apparently can't download or install it.
Does anyone know what is the trick here?
we need to build using 18362 SDK and that's fine, but does the Hololens1 also need to have it install on it OS? if yes, how can we install it?

[david-c-kline]

@Ariel-Feldman, you should not need 18362 on the HoloLens 1. When you run your application, MRTK will ask Windows 10 if an API (ex: eye tracking) is supported on your version of Windows 10. If not, the API will not be called.

If you have any trouble or questions, please do not hesitate to ask on stack overflow (tag: mrtk).

[Ariel-Feldman]

the solutions in here, straight from the queen, mother of dragons and breaker of chains...of Hololens2 []-) Julia Schwarz
https://stackoverflow.com/a/55626479/10104036

[evilsly]

Assets\MRTK\Providers\WindowsMixedReality\Shared\WindowsMixedRealityArticulatedHandDefinition.cs(26,17): error CS0246: The type or namespace name 'HandMeshObserver' could not be found (are you missing a using directive or an assembly reference?)
Assets\MRTK\Providers\WindowsMixedReality\Shared\WindowsMixedRealityArticulatedHandDefinition.cs(29,17): error CS0246: The type or namespace name 'HandMeshVertex' could not be found (are you missing a using directive or an assembly reference?)
Build completed with a result of 'Failed' in 6 seconds (5770 ms)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
UnityEditor.BuildPlayerWindow+BuildMethodException: 3 errors
at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x002bb] in :0
at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x00080] in :0
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
3 Error in Unity2019.4.13 Build

[keveleigh]

Which SDK are you trying to build with in the Unity build settings? That looks like an issue with a too-old version. You'll want to use 18362 or higher.

[Manurocker95]

I got same issue with my hololense 2 (updated) and latest W11 update. Any idea?

I'm using 2020.3.26LTS with latest packages from MRTK Tools

[haibo839455603]

An error occurred while resolving packages:
Project has invalid dependencies:
com.atteneder.gltfast: Error when executing git command. fatal: unable to access 'https://github.com/atteneder/glTFast.git/': Failed to connect to github.com port 443 after 21097 ms: Couldn't connect to server

com.atteneder.ktx: Error when executing git command. fatal: unable to access 'https://github.com/atteneder/KtxUnity.git/': Failed to connect to github.com port 443 after 21110 ms: Couldn't connect to server

com.microsoft.mixedreality.visualprofiler: Error when executing git command. fatal: unable to access 'https://github.com/microsoft/VisualProfiler-Unity.git/': Failed to connect to github.com port 443 after 21092 ms: Couldn't connect to server

org.mixedrealitytoolkit.data: The file [E:\Unity\org.mixedrealitytoolkit.data\package.json] cannot be found