如果你的 Mac 上已经安装了较旧版本的 iTunes，也可以通过 App Store 进行更新。
Before downloading, ensure your system is updated.
Legacy software comes with maintenance hurdles. If you experience errors after installing, try these proven workarounds:
The version number "10.13.99" is likely a placeholder used by Apple's installers to denote the absolute final limit of the macOS High Sierra (10.13) series. Since High Sierra actually ended with version 10.13.6
Historically, the last compatible version of iTunes for High Sierra was iTunes 12.8.2. This version represented a twilight era for the software. On modern macOS (Catalina and later), Apple replaced iTunes with three separate apps: Apple Music, Apple TV, and Apple Podcasts, while device syncing moved to Finder. Therefore, downloading iTunes for macOS 10.13.99 would mean capturing a snapshot of digital media management just before the schism. It would be the version that still managed a local iPod Classic without complaining, allowed manual drag-and-drop of MP3s, and featured the visualizer full-screen without cloud subscription pop-ups. For purists, this hypothetical download is the Holy Grail. itunes macos 10.13.99 download
Go to the App Store and click the Updates tab. If an iTunes update is available, it will appear there.
Provide your Mac's administrator password when requested to finalize the installation. Method 2: The macOS High Sierra Combo Update
Ideal if you only need a local media player to organize and play music or video files without device syncing.
Finally, after several attempts, John managed to download the iTunes installer. He ran the package, and iTunes 12.7.5 installed smoothly on his MacBook. The iTunes icon refreshed on his dock, and he could now sync his iPhone without any issues. Since High Sierra actually ended with version 10
Some users search for “10.13.99” because they are confused about their OS version. To check your real version:
| 功能 | 替代方式 | | -------------- | ------------------------------------------------------------------------------------------------------ | | | 将 iPhone/iPad 连接到 Mac，打开 “访达”（Finder） ，在侧边栏中选择你的设备即可。 | | 播放音乐 | 使用 “音乐”（Apple Music） App | | 观看视频 | 使用 “电视”（Apple TV） App | | 收听播客 | 使用 “播客”（Apple Podcasts） App |
Apple also released a specialized version, iTunes 12.6.5 , which retained the ability to download App Store apps directly inside the desktop interface.
Click the blue button to grab the iTunes12.8.3.dmg file (approximately 275.9 MB). Therefore, downloading iTunes for macOS 10
Once you get iTunes 12.8.3 working, disable automatic updates in System Preferences. Apple will never push a new feature to you, but they might push a certificate revocation that breaks your connection. Turn off “Install system data files and security updates” if iTunes stability is your priority.
| Updated: 2026
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