After the utilities are installed, start Fiddler and in Tools menu select Win8 Loopback Exemptions (you can do the same, if you click the first Windows 8 button in the toolbar).You can remove this restriction (Loopback Restriction) in the program container AppContainers for a certain Metro app using Fiddler extension - Windows 8 AppContainer Loopback Utility ( enableloopbackutility.exe). By default, Modern Apps cannot be debugged using Fiddler, since it works as a local proxy server on your computer (Metro Apps cannot send traffic through local proxy interface by default).Install Fiddler with the standard settings.NETv4 Framework installed on your computer) For Windows 8 or later you’ll need Fiddler for. Download Fiddler Web Debugger from this webpage ( ).To implement a workaround, we’ll use a free HTTP/HTTPS proxy server Fiddler, meant for web apps debugging and inspecting all HTTP traffic between a computer and Internet servers (in particular, it can be used to get a direct link to download an installation APPX file of any Metro app from Windows Store). While the tunnel interfaces on Windows are loopbacks, you will have either to ask developers to modify the apps or to use a workaround solution to make Metro Apps work correctly. 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.
0 kommentar(er)
