Secure Input won't compile because it cannot find dlls - Where can I get these DLLs?

[Presinator]

The DLLs that are reuqired are Windows.dll and Windows.ApplicationModel.AppService.dll.
I cannot find these DLLs anywhere on my system. I am updated to build 17134 of the SDK.

[aalmada]

I was able to fix it by editing PasswordInputProtection.csproj and adding the version number to the Windows Kits path:

    <Reference Include="Windows">
      <HintPath>$(SystemDrive)\Program Files (x86)\Windows Kits\10\UnionMetadata\10.0.17763.0\Windows.winmd</HintPath>
    </Reference>