UWP : PRI277: 0xdef00532 - Conflicting values for resource ''

Question

As a part of the Visual Studio 2017 UWP build process, an app called MakePri.exe is run. It is throwing an error in my project but I have no idea why. The command line call is:

C:\Program Files (x86)\Windows Kits\10\bin\10.0.16299.0\x64\MakePri.exe New -ProjectRoot C:\AdaptSource\src\Xivic\Adapt.Presentation.XamarinForms\Adapt.Presentation.Xivic.UWP\ -ConfigXml obj\x86\Debug\priconfig.xml -OutputFile C:\AdaptSource\src\Xivic\Adapt.Presentation.XamarinForms\Adapt.Presentation.Xivic.UWP\bin\x86\Debug\resources.pri -IndexName AdaptSolutionsPty.Ltd.Xivic-Helpdesk -Verbose -Overwrite

The error that it returns is:

error PRI175 : 0x80073b0f - Processing Resources failed with error : Duplicate Entry.

GENERATEPROJECTPRIFILE : error PRI277: 0xdef00532 - Conflicting values for resource ''

I have no idea what it is talking about. There is no useful information in the error message. After sifting through a lot of google results, I see that the problem seems to come up when there are references to certain or duplicate DLLs in referenced .NET Standard / PCL projects.

For example: https://forums.xamarin.com/discussion/103956/strange-build-error-xamarin-uwp

UWP unit test compile errors

But in other threads, at least people are getting a resource name to work with. I've removed as many references as I can. I've used resharper to help. I really need to get a useful error message out of MakePri. Does anyone know anything about this? Is there a way to see what it is stumbling on?

Edit: The issue was that my solution was using two versions of Xamarin.Forms. Once I consolidated the NuGet packages, the problem went away. But, I feel like this is a bug because the error message should be more descriptive. It wastes a lot of time. So, I've logged the issue here: https://github.com/dotnet/buildtools/issues/1912 I'll leave this open until there is some kind of response at Microsoft.

Answer 1

Consolidate both Xamarin.Forms and Microsoft.NETCore.UniversalWindowsPlatform version for all the dependency projects will resolve the issue. It is mainly due to the Xamarin.Forms latest stable version requires higher version of Microsoft.NETCore.UnivesalWindowsPlatform nuget i.e.,(6.0.1).