While there is no official version of iTunes titled "10.13.99," this specific keyword often appears in error messages on newer macOS versions (like Monterey or Ventura) stating that a legacy installer requires "macOS version 10.13.99 or earlier" to run. This usually happens when users try to install older iTunes versions on systems where it has been replaced by the standalone Apple Music and TV apps.
Follow these steps precisely:
Official downloads for version 10.1.3 are no longer prominently featured on Apple’s main site, as they have shifted support to iTunes 12.8.3 download itunes 101399 for mac 39link39 new
Time Machine or Backup
If you previously had the desired iTunes version on an old Mac, restore it from a Time Machine backup. Copy the iTunes.app from /Applications and the frameworks from /System/Library/PrivateFrameworks (though this requires careful handling). While there is no official version of iTunes titled "10
If you manage to find a safe download link, follow these steps to install it on a supported Mac: If you have a modern iTunes library (12