My Apple TV was using home sharing perfectly fine. At some point my home computer simply stopped showing up. I tried rebooting it and my computer and nothing made it show up. I then tried turning off Home Sharing with the intent of turning it back on again. I put in my password, hit the button and it just goes to "Accessing iTunes Store..." forever. It never turns it on successfully. Now I can't stream anything. I also tried uninstalling and re-installing the latest iTunes but I get the same result.