When i try to create an app-package:
"From the Store menu item, select Create App Packages..."
I need an account for store, because always give me :
"Your Microsoft account is not registered to submit apps to the store.
To register or check yout registration, go to the windows developer portal."
And the site says:
" We're sorry, but the Windows Store is currently closed to general registration. "
UPDATE:
In this article i found my problem for app package:
Sara Silva