Windows Update keeps Windows 10 updated by downloading and installing the latest updates, drivers, and hotfixes released by Microsoft.
Starting with Windows 10 version 1903, a new Specify deadlines for automatic updates and restarts group policy is available that lets you specify the number of days that a user has before quality and feature updates are installed on their devices automatically, and a grace period after which required restarts occur automatically. Updates and restarts will occur regardless of active hours, and the user will not be able to reschedule.
Deadlines for feature updates and quality updates can be up to 30 days. The auto-restart grace period can be from 0 to 7 days.
You can also disable auto-restarts until the end of the auto-restart grace period.
If you disable or do not configure this policy, devices will get updates and will restart according to the default schedule.
This policy will override the following policies:
1. Specify deadline before auto restart for update installation
2. Specify Engaged restart transition and notification schedule for updates
3. Always automatically restart at the scheduled time
4. No auto-restart with logged on users for scheduled automatic updates installation
This tutorial will show you how to specify deadlines for automatic updates and restarts for Windows Update in Windows 10.