In my lumia 830, the mail and calender app won't update after the windows 10 update. But the version which I had works fine. So I waited hoping that this problem will be solved with the anniversary update. Yesterday I update my phone to w10m anniversary update and then hard reset twice. But still I can't update the mail and calendar app, and the worse thing is the app shows it won't open until the update. The app downloading just stops after reaching 12mb. An error code 0x80200056 is showing. Please help me.