If you can't Sign in try this:
For anyone who is in the US or Canada and are seeing a region error on sign in and do not see quickplay or the social, try this:
Start the registry by going to start - run - regedit
Navigate to \HKEY_CURRENT_USER\Control Panel\International\Geo
Right click on Geo and select New - String Value
Call it Nation
Enter a value of 244 for the US or 39 for Canada
Relaunch the Zune application and see if you can sign in
* This posting is provided as-is with no warranties, and confers no rights. *