FAQ

After building the project from Unity Editor open it with Visual Studio
In the solution explorer, right click on the project
Store -> Create App Packages
Do you want to build packages to upload to the Windows Store? Choose No, then Next
Pick appropriate platform, for ex., ARM Release
Don’t include public symbol files, this will make package smaller
Create
Locate folder which is named something like YourApp_1.0.0.0_ARM_Test, check that it has Add-AppDevPackage.ps1 file
Copy the folder contents to the target machine, then on the target machine right click on Add-AppDevPackage.ps1 -> Run with PowerShell
Follow the steps, you might need an internet connection to install Developper License, this will require for you to have Microsoft account
If everything is okay, your app should appear on the start menu

Open Windows PowerShell from start menu, navigate to your appx file, execute Add-AppxPackage <yourappx>.appx, if the appx was signed, it will be installed on your machine. Note: if you’re installing appx file again, you have to uninstall the previous one, simply right-click on the icon, and click Uninstall.

Something is wrong with your certificate, try creating a new by clicking on Package.appxmanifest -> Packaging -> Choose Certificate -> Configure Certificate -> Create Test Certificate

Read this post http://msdn.microsoft.com/en-us/library/hh780905(v=vs.110).aspx . You will need to create a WinRT component, and reference it from main module.

You can find a log in <user>\AppData\Local\Microsoft\AppCertKit which might contain additional information about the failure.

No worries. Here’s all of them:

UNITY_WINRT	Defined on all scriptsA piece of code that allows you to create your own Components, trigger game events, modify Component properties over time and respond to user input in any way you like. More info See in Glossary
UNITY_WSA	Defined on all scripts
UNITY_WINRT_10_0	Defined on all scripts
UNITY_WSA_10_0	Defined on all scripts
ENABLE_IL2CPP	Defined on all scripts when using IL2CPPA Unity-developed scripting back-end which you can use as an alternative to Mono when building Projects for some platforms. More info See in Glossary scripting backendA framework that powers scripting in Unity. Unity supports three different scripting backends depending on target platform: Mono, .NET and IL2CPP. Universal Windows Platform, however, supports only two: .NET and IL2CPP. More info See in Glossary
NETFX_CORE	Defined on C# scripts that are compiled using Microsoft C# compiler when using .NET scripting backend
WINDOWS_UWP	Defined on C# scripts when using .NET 4.6 or .NET Standard 2.0 compatibility level
ENABLE_WINMD_SUPPORT	Defined on C# scripts when using .NET 4.6 or .NET Standard 2.0 compatibility level

• 2017–05–16 Page amended with no editorial review

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Universal Windows Platform: Debugging on IL2CPP Scripting Backend

Universal Windows Platform: Examples

Unity Manual