Windows 8 CP–using Metro App with proxy

Sometime I use my windows 8 tablet on a network with a proxy. If I set a proxy inside IE in the desktop I can navigate without problem. But when I go to the Metro app some apps appear to run corretly (email) but other fails (Store). In the Store sometime I can see the apps but I can’t download them.

It looks like the Metro apps can’t use the proxy inserted in the desktop IE.

The solution I found is to use netsh. Here it is: open a command promt with Admin privileges and write the following command:

   1: netsh winhttp set proxy <proxy-addr:Port>

Sometime I need to reboot to activate it.