I've owned a few devices with Win8 on them and this is the first which is giving me troubles with XBL games. Whenever I attempt to log in, I get an error: "To use this app, you need to sign in with the Microsoft account that was used to download it." I'm not using a different account, never have, and even after following the directions in the message I still can't get XBL service to work. There's nothing wrong with the games but none of them will authenticate to XBL. Is anyone else seeing this? Is there a solution for this problem?