Please see the latest improvement at Set Mac updates on the target local day, local hours, and local timezone.

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Below is deprecated.

Here are the key features of the "Software Update at Night" policy for macOS devices:

• Purpose: Implement a Declarative Device Management (DDM) system to support a "Software Update at Night" policy for macOS devices.

  

• Scope:

  • Add a policy to schedule macOS software updates to occur overnight, minimizing user disruption.

  • Use the TargetLocalDateTime key in DDM to enforce updates at a specific local time (e.g., overnight).

  • Ensure updates are enforced by a deadline, with the OS prompting users to update now or defer until the scheduled time.

  • Address edge cases, such as what happens if the device is offline at the scheduled time (the update will apply as soon as the device is online, with a 1-hour grace period for the user).

Notable Tips:

• If the DDM OS update time has passed (e.g., the device was offline), the device gives the user 1 hour after receiving the update message before automatically updating.