When developing applications in Visual Studio, this access is enabled, but after the app has been published in Windows Store, the developer has to enable this feature manually in the manifest file. To give a Metro app full network access, you have to add privateNetworkClientServer to APPX manifest. The same is applies to local proxy servers (from the simplest ad removers, like Privoxy, to full-fledged proxy servers).

Since all tunnel interfaces ( pptp, l2tp, pppoe), which use VPN, are loopback interfaces, the majority of Metro Apps cannot send network traffic to them, and, consequently, to access the Internet. In this context, we are interested in the fact that they are run in an isolated environment with the access to the loopback computer interface disabled by default. In this article, we’ll examine the reason why it appears and how to solve it.Īs you know, Modern Windows 8 Apps differ from classic Windows apps. The problem is quite old, but there is no official Microsoft solution so far (At least, I wasn’t able to find it). It means that the problem occurs only in Windows 8 which has to set up a VPN tunnel itself.

If you place a hardware router that initiates VPN connection to the provider before the computer, the issue doesn’t occur.

My metro app not working