If you saw "10.13.99" in a download link or forum, it is likely or a typo for 10.13.6.
Since standard iTunes cannot be installed on modern versions like Monterey, Ventura, or Sonoma, use these built-in alternatives: iPhone/iPad Management : To sync, back up, or restore your devices, simply open and select your device from the sidebar. Music Library itunes macos 10.13.99 download
Note: macOS version 10.13.99 does not exist as an official Apple release. The final version of macOS High Sierra is 10.13.6. This article addresses the user intent behind the search (finding the last compatible iTunes for older macOS versions) and corrects the version number while providing safe download solutions. If you saw "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. The final version of macOS High Sierra is 10
It was a typical Wednesday morning for John, a freelance graphic designer working from his MacBook Pro. He was running macOS High Sierra 10.13.6, and his iTunes was due for an update. As he opened iTunes, the software nagged him to update to the latest version. John clicked on the "Update" button, only to be faced with an error message: "Cannot update. This version of iTunes cannot be updated. Please download iTunes 12.8 or later from the Mac App Store."