Install RSAT Tools on Windows 10
From DFWLPiki
This script will temporarily disable using WSUS settings as update source and switch to online. After completion, it switches back to WSUS Source.
$currentWU = Get-ItemProperty -Path “HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU” -Name “UseWUServer” | select -ExpandProperty UseWUServer Set-ItemProperty -Path “HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU” -Name “UseWUServer” -Value 0 Restart-Service wuauserv Get-WindowsCapability -Name RSAT* -Online | Add-WindowsCapability –Online Set-ItemProperty -Path “HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU” -Name “UseWUServer” -Value $currentWU Restart-Service wuauserv
No idea why WSUS Feature on Demand isnt working, but it is what it is.