How to Fix Error 9815 iTunes
For best performance, make sure your computer’s date and time settings are correct when you use iTunes.
Purchases from the iTunes Store do not play as expected.
An alert with a -9800, -9815 or -9814 error may appear when you try to connect to the iTunes Store.
- Quit iTunes.
- Set the correct date on your computer. If you need help doing this, check your computer’s built-in help system.