macOS 10.13.5 was an update to macOS 10.13 (High Sierra) released on June 1, 2018.
- Adds support for Messages in iCloud, which lets you store messages with their attachments in iCloud and free up space on your Mac. To enable Messages in iCloud, go to Preferences in Messages, click Accounts, then select ”Enable Messages in iCloud.”
- Variables used in SCEP payloads now expand properly.
- Configuration profiles containing a Wi-Fi payload and SCEP payload install as expected when the KeyIsExtractable key of the SCEP payload is set to false.
See Apple Security Updates for detailed information about the security content of this update.
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