If you are using external devices or folders (other than "Music") to synchronise music to your phone, you have to enable access on a Mac software. To do this, go to File > Allow Access to Folder.
- Can I get a notification if I receive call or text messages from blocked numbers?
- How can I block phone calls and text messages on my Lumia using the call+SMS filter app?
- What can I do if the screen on my Lumia will no longer rotate?
- I cannot send or receive text messages on my Lumia phone
- How do I get week numbers to my Lumia calendar?