Xbox Insiders are reporting that the latest console update is wiping their profiles and restoring the console's factory settings.

Missing profiles and bugs galore with Xbox Alpha Skip-Ahead and Alpha Insiders update. Profile data loss, system settings wiped, and Xbox gamers frustrated by latest preview update. Impact of bugs ...

Select your profile and press the A button ... From your Xbox One's Home screen, press the Xbox button on your controller, and navigate to the "System" tab on the far right of the menu.