Windows 10: Update Script

8/7/2020: there’s an updated version of this script here.

function updateWindows{
# Set PowerShell Gallery as Trusted to bypass prompts
$trustPSGallery=(Get-psrepository -Name 'PSGallery').InstallationPolicy
If($trustPSGallery -ne 'Trusted'){
Install-PackageProvider -Name Nuget -Force
Set-PSRepository -Name 'PSGallery' -InstallationPolicy Trusted -Confirm:$false
}

#Install the PowerShell Windows Update module
$checkModule=Get-Module -ListAvailable -Name PSWindowsUpdate
if(!($checkModule)){Install-Module PSWindowsUpdate -Confirm:$false;}

# Register Windows Update Service if it has not been registered
$MicrosoftUpdateID="7971f918-a847-4430-9279-4a52d1efe18d"
$registered=$MicrosoftUpdateID -in (Get-WUServiceManager).ServiceID
if (!($registered)){
Add-WUServiceManager -ServiceID 7971f918-a847-4430-9279-4a52d1efe18d -Confirm:$false
}

# Perform Updates
set-executionpolicy bypass -force
Get-WindowsUpdate -AcceptAll -MicrosoftUpdate -Install -IgnoreReboot;
"Done."; 
}

updateWindows;