How to enable automatic updates on Windows 10?

I've been trying to set up automatic updates for Windows 10 across our office computers, but the settings keep reverting after a reboot. Has anyone experienced this? Any scripts or Group Policy tweaks that reliably enforce auto-updates?

Make sure the Windows Update service is set to Automatic (Delayed Start). Also, check the registry key HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate\AU and set AUOptions to 4. If you're in a domain, use the following GPO:

Computer Configuration → Administrative Templates → Windows Components → Windows Update → Configure Automatic Updates → Enabled → 4 – Auto download and schedule the install.

We use PowerShell to enforce the settings on all machines. Here's a simple script you can push via SCCM:

Set-ItemProperty -Path "HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate\AU" -Name "AUOptions" -Value 4
Set-Service -Name wuauserv -StartupType Automatic
Restart-Service wuauserv

That should keep the policy alive after reboots.