UWP hosted web app for a localhost web app

Question

I'm trying to create a hosted web app for Windows 10 for a web app hosted on the local machine (localhost), but the resulting windows 10 app is always empty (it shows a blue screen with a big white box with a cross in the middle).

I followed this tutorial to create the web hosted app. The web app at localhost is a .NET MVC 4 web app with HTML5, CSS3 and Bootstrap. And here is my manifest:

Not quite impressive... but i think that should work... while it doesn't

Answer 1

After some experimentation, and based on my experience, it seems that if the app doesn't get past the splash screen it's because there are no valid Content URIs that can be used.

These should be specified in the package.appxmanifest file.

There are a couple of potential gotchas

1. If you've added an extra entry it will default to a WinRT Access value of 'None' and so won't be used. Change this if it's the case.
2. Visual Studio seems to cache the contents of the appxmanifest file and doesn't pick up changes immediately. Even if the changes have been saved to disk and even if you rebuild the project. Closing and restarting VS seems to be the only way to flush this.