Download macOS High Sierra 10.13.3 Combo Update
The macOS High Sierra 10.13.3 improves the security and stability of your Mac, and is recommended for all users.
This update:
• Addresses an issue that could cause Messages conversations to temporarily be listed out of order
For more detailed information about this update, please visit: https://support.apple.com/kb/HT208375
For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT201222
Which update should I install?
Choose the macOS High Sierra 10.13.3 update that corresponds to your Mac:
- If you have an iMac Pro, please install the macOS High Sierra 10.13.3 iMac Pro Update.
- If you have another Mac computer running macOS High Sierra 10.13.2, please install the macOS High Sierra 10.13.3 Update.
- If you have another Mac computer running macOS High Sierra 10.13 or 10.13.1, please install the macOS High Sierra 10.13.3 Combo Update.