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Determine Windows Activation Status with PowerShell

Determine Windows Activation Status with PowerShell

function Get-ActivationStatus {
        [Parameter(ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]
        [string]$DNSHostName = $Env:COMPUTERNAME
    process {
        try {
            $wpa = Get-WmiObject SoftwareLicensingProduct -ComputerName $DNSHostName `
            -Filter "ApplicationID = '55c92734-d682-4d71-983e-d6ec3f16059f'" `
            -Property LicenseStatus -ErrorAction Stop
        } catch {
            $status = New-Object ComponentModel.Win32Exception ($_.Exception.ErrorCode)
            $wpa = $null    
        $out = New-Object psobject -Property @{
            ComputerName = $DNSHostName;
            Status = [string]::Empty;
        if ($wpa) {
            :outer foreach($item in $wpa) {
                switch ($item.LicenseStatus) {
                    0 {$out.Status = "Unlicensed"}
                    1 {$out.Status = "Licensed"; break outer}
                    2 {$out.Status = "Out-Of-Box Grace Period"; break outer}
                    3 {$out.Status = "Out-Of-Tolerance Grace Period"; break outer}
                    4 {$out.Status = "Non-Genuine Grace Period"; break outer}
                    5 {$out.Status = "Notification"; break outer}
                    6 {$out.Status = "Extended Grace"; break outer}
                    default {$out.Status = "Unknown value"}
        } else {$out.Status = $status.Message}

This function is designed to be compatible with Get-ADComputer  cmdlet. You can pipe cmdlet output to a function. For example, if you want to get activation status for all computers in the domain, you can use the following command sequence:

 Get-ADComputer -Filter * | Get-ActivationStatus

and here is example output:

PS C:\> Get-ADComputer -Filter * | Get-ActivationStatus ComputerName Status ———— —— Server Licensed TestPC1 Licensed TestPC2 The RPC server is unavailable TestPC3 Licensed TestPC4 Unlicensed PS C:\>

The RPC server is unavailable status means that WMI call was unsuccessfull (for example, remote computer is offline or unreachable due to network connectivity or firewall issues).

Enterprise customers may use Volume Activation Management Tool 2.0  .