#Requires -RunAsAdministrator
$clientKeys = @{
    'Microsoft Windows 10 Enterprise' = 'NPPR9-FWDCX-D2C8J-H872K-2YT43'
    'Microsoft Windows 10 Enterprise LTSC' = 'M7XTQ-FN8P6-TTKYV-9D4CC-J462D'
    'Microsoft Windows 10 Enterprise N LTSC' = '92NFX-8DJQP-P6BBQ-THF9C-7CG2H'
    'Microsoft Windows 10 Pro' = 'W269N-WFGWX-YVC9B-4J6C9-T83GX'
    'Microsoft Windows 7 Enterprise' = '33PXH-7Y6KF-2VJC9-XBBR8-HVTHH'
    'Microsoft Windows 7 Professional' = 'FJ82H-XT6CR-J8D7P-XQJJ2-GPDD4'
    'Microsoft Windows Server 2008 R2 Standard' = 'YC6KT-GKW9T-YTKYR-T4X34-R7VHC'
    'Microsoft Windows Server 2012 R2 Standard' = 'D2N9P-3P6X9-2R39C-7RTCD-MDVJX'
    'Microsoft Windows Server 2016 Datacenter' = 'CB7KF-BWN84-R7R2Y-793K2-8XDDG'
    'Microsoft Windows Server 2016 Standard' = 'WC2BQ-8NRM3-FDDYY-2BFGV-KHKQY'
}
$osVersion = (Get-WmiObject -Class Win32_OperatingSystem).Caption
$osVersion = $osVersion.Trim()
if ($clientKeys.ContainsKey($osVersion)) {
    $kmsKey = $clientKeys[$osVersion]
    Set-Location c:\windows\system32
    cscript slmgr.vbs -ipk $kmsKey
    cscript slmgr.vbs -ato
}else{
    Write-Error "No KMS client key found for $osVersion"
    exit 1
}