macOS 10.13.3 was an update to macOS 10.13 released on January 23, 2018.
This update:
- Addresses an issue that could cause Messages conversations to temporarily be listed out of order
- Resolves an issue that could cause your Mac to stop responding when connected to an SMB server
See Apple Security Updates for detailed information about the security content of this update.
Learn how to get this macOS update.