“This submission failed with error code(s) 1004” when upploading app to Windows Store

Question

I'm trying to upload my UWP app updated package (.appxupload) to the Windows Store and it tells me "This submission failed with error code(s) 1004.". My app has only one warning with the Windows App Cert Kit, because it needs the Enterprise Authentication capability. Does anyone know what the error code 1004 means and how I can find more information what went wrong?

I read that there were some problem when using the Microsoft.NETCore.UniversalWindowsPlatform 6.2 package, so I changed it to Version 6.1.12 already.

Answer 1

I figured out what the problem was. The package is build on a windows docker container. But there is the windows.winmd file missing in the package. That's why the error is. When building the package on the local machine, everything works.