UsersManager.IsSomeoneSignedIn always returns true. IL2CPP LdrpReportError IsSignedInW failed

I'm having a problem when using IL2CPP using the XboxOne Users in my game. Even using the example Xbox One - Users Example.unitypackage and setting to IL2CPP causes the same problem and I get the following error:

0128:0148 @ 00029406 - LdrpReportError - Warning: Locating export "IsSignedInW" for DLL "Unknown" failed with status 0xc0000139

UsersManager.IsSomeoneSignedIn always returns true. When no one is signed in it still returns true, but only when IL2CPP has been used, the default Mono build is fine and recognises correctly when someone is signed in or not.

Using Mono is not an option.

Setup: IL2CPP and .Net2 Unity 5.4.5p4 XboxOne_PlatformPlugins_4.09.00_Oct16QFE2 VisualStudio 2015

I've just updated to the more recent versions: Unity 5.4.6f3 UnitySetup-Xbox-One-Support-for-Editor-5.4.6f3 XboxOne_PlatformPlugins_5.00.00_Mar17QFE2 XboxOneXDK_03_2017_qfe2 VisualStudio 2015

When running Xbox One - Users Example.unitypackage as IL2CPP I get the following and the sign in does not display:

0124:0150 @ 00006031 - LdrpNameToOrdinal - WARNING: Procedure "IsSignedInW" could not be located in DLL at base 0x00000107BB6C0000. 0124:0150 @ 00006031 - LdrpReportError - WARNING: Locating export "IsSignedInW" for DLL "Unknown" failed with status: 0xc0000139.

It all works fine when using Mono but that is not an option, and need to use IL2CPP