unknown error 11556
my iPad shows "cannot connect to iTunes Store". My PC shows "iTunes could not connect to the iTunes Store. An unknown error occured (11556). Make sure your network connection is active and try again.".
I think that it will be helpfull if there was an app that is able to find issues. This app makes log and forwards it securely to Apple Tech Team or generates a solution.
iPad 2, iOS 5.0.1, PC with MS Vista