Learn what to do if you have trouble syncing music from iTunes or Finder on your Mac to your iPhone, iPad or iPod touch.
Update your Mac to the latest version of macOS.
Update your device to the latest version of iOS or iPadOS.
If you're using macOS Mojave or earlier, update to the latest version of iTunes.
Sync again.
Your music library might store media files in several locations. If you consolidate your files, you can correct permissions and simplify syncing.
Consolidate your files to store your content in one location.
Sync again.
Some third-party software, including security software, can interfere with the sync process between your computer and your device.
In some cases, there may be an issue with specific songs you're trying to sync.
Check if the error message names the songs causing the issue.
Sync only a few songs at a time. Add more until the issue happens again.
If you bought a song from the iTunes Store, delete it and redownload it. You can also get songs directly on your iPhone, iPad or iPod touch.
If you copied songs from a CD or didn't buy them from the iTunes Store, delete the songs. Import them again from the original source.