Enable-22H2.ps1

<#
    .SYNOPSIS
    Downloads and installs the Windows 10 22H2 enablement package.

    .DESCRIPTION
    Downloads and installs the Windows 10 22H2 enablement package for machines not managed by a patch management system that supports feature updates natively (e.g. Windows Update, WSUS, Intune).
    
    Requires Windows 10 build 2004 through 21H2.

    Author: James Schlackman <[email protected]>
    Last Modified: January 28, 2025

    .NOTES
    More information on Windows 10 feature enablement packages:
    https://support.microsoft.com/en-us/topic/kb5015684-featured-update-to-windows-10-version-22h2-by-using-an-enablement-package-09d43632-f438-47b5-985e-d6fd704eee61
#>

# Check if Windows 10 and currently running a valid build number to receive the enablement package
If (([Environment]::OSVersion.Version.Major -eq 10) -and ([Environment]::OSVersion.Version.Build -lt 19045)) {

    # Get OS architecture
    $arch = If ($env:PROCESSOR_ARCHITEW6432) {$env:PROCESSOR_ARCHITEW6432} Else {$env:PROCESSOR_ARCHITECTURE}
    Write-Output "$arch detected."
    $updatePath = 'https://catalog.s.download.windowsupdate.com/c/upgr/2022/07'

    # Download respective .msu
    Write-Host 'Downloading...'
    Switch ($arch)
    {
        AMD64 {
            $msu = "$env:TEMP\windows10.0-kb5015684-x64.msu"
            Invoke-WebRequest -Uri "$updatePath/windows10.0-kb5015684-x64_523c039b86ca98f2d818c4e6706e2cc94b634c4a.msu" -OutFile $msu
        }
        x86 {
            $msu = "$env:TEMP\windows10.0-kb5015684-x86.msu"
            Invoke-WebRequest -Uri "$updatePath/windows10.0-kb5015684-x86_556015f4260dd75ca30b3e84484ea5b3ec97fa08.msu" -OutFile $msu
        }
        ARM64 {
            $msu = "$env:TEMP\windows10.0-kb5003791-arm64.msu"
            Invoke-WebRequest -Uri "$updatePath/windows10.0-kb5015684-arm64_a4cc6e95084da14adb972e1d67cf573a244ed7a3.msu" -OutFile $msu
        }
    }

    # If a download was retrieved, install the .msu
    If (Test-Path $msu)
    {
        Write-Output "Installing $msu"
        Start-Process $env:SystemRoot\System32\wusa.exe -ArgumentList "$msu /quiet /norestart"
        Write-Output 'Enablement package install started, check Setup event log for progress.'
        Exit 0
    } Else {
        Write-Output 'Failed to download enablement package.'
        Exit 1
    }
} Else {
    Write-Output ('Windows build {0} not eligible for enablement package.' -f [Environment]::OSVersion.Version)
    Exit 0
}