I am uploading a latest version of my app to the Windows store but my app is throwing the error:
Package acceptance validation error: We encountered a
One workaround I have found is to get rid of the ARM configuration.
So you build with just x86|x64
instead of x86|x64|ARM
obviously this doesn't help if you need to build for ARM
But I think this is a bug in a recent update to MsBuild which you can see reported by other people here: https://developercommunity.visualstudio.com/content/problem/107928/get-merge-failure-for-shared-merged-pri-file-0x800.html?