this service is on automatic it syncs many things but the only thing i care is windows spot light the lockscreen picture that keeps changing at boot on lockscreen wich is called windows spotlight. i want to set it to manual. but how to i activate it so it runs it syncs and downloads and changes picture. where can i run this option run once then run it when i wanted it to change the picture?? This service synchronizes mail, contacts, calendar and various other user data. Mail and other applications dependent on this functionality will not work properly when this service is not running. i only care for it to change the lockscreen picture sont use the rest like calendar mail ect.