Log into your dedicated or cloud server as administrator.

Start
Click on: Server Manager

Click on: Local Server (On left pane)
Click on: Windows Update (Install updates automatically using Windows Update)
Under: Windows Update
Click on: Change settings (Right Pane)
Under: Choose your Windows Update settings
Click on Drop down box: Important updates
Choose:
1. Install updates automatically (recommended)
2. Download updates but let me choose whether to install them
3. Check for updates but let me choose whether to download and install them
4. Never check for updates(not recommended)
Click on: OK
Restart to apply