I downloaded iOS 6 to my iPhone 4S yesterday when the new OS was released. While checking out the new features in iOS 6, I tapped on the new “Passbook” app on my home screen, then the “App Store” button, and I got the error message “Cannot connect to iTunes Store”. I got this error both on wifi and 4G. Apparently a lot of people had the same experience.
Here’s the solution for iPhones:
Go to Settings>General>Date and Time>Set Automatically>Off. Set the date one year ahead to 2013. Try to update the apps again from Passbook. The iTunes store should load this time. You can then go back to Settings and change it back to Set Automatically “On”.
Weird bug! And very blatant! But I’m glad there was a remedy.
Some other sites that talked about this: