Motivation:

You have a server with Windows Server 2016. The server Windows updates are being downloaded and installed automatically. This may affect your customers’ usage. You want to disable it so that you can install Windows updates when you find most appropriate.

Solution:

1. Open Command Prompt (Admin).
2. Type sconfig and press Enter.
3. Press 5 (Windows Update Settings:), then press Enter.
4. Press D (to select DownloadOnly option), then press Enter.
5. Click OK button.
6. Press 13 (Restart Server), then press Enter.
7. Click Yes button to restart your server.

To disable automatic reboots in inactive hours, you can try the steps below.

1. Click Start and type Task Scheduler.
2. Expand Task Scheduler Library >> Microsoft >> Windows .
3. Click  UpdateOchestrator.
4. Right-click on Reboot and select Disable.