Hey, I have developed a VR environment using holotoolkit and thus have to build for UWP and use IL2CPP. I have no experience with either of these and am generally inexperienced when it comes to building and compiling as i normally didn’t see the need for it (mostly worked with unity for research purposes where building was never needed. With that in mind my issue is probably relatively straight forward:
I have build in unity opened the solution in VS and run and deployed it there. First everything runs fine and the app starts. However i cannot run the executable (" exe not working vccorlib140_app.dll was not found"). I have looked for a while now on how to fix this. At this point i am just blindly following things i pick up googling. I have tried to package my appx as mentioned here UWP / IL2CPP / Running .exe after build: The code execution cannot proceed but for that i’ll need some certificate(?). I mean i don’t even know what a powershell command is… 
Regardless, at least it wont let me install the appx afterwards by simply installing the “makeshift” certificate and double clicking the appx stating that
“Either a new certificate must be installed for this app package or you need a new app package with trusted certificates. Your system administrator or the app developer can help. A certificate chain was processed but terminated in a root certificate that isn’t trusted (0x800B0109)” …
I know this is probably more windows related rather than unity but I am a little over my head here and need to deliver the project i’d appreciate any insight 
thanks for your time and excuse my ignorance 