Get-AutoPilotDeviceMultiTenant.ps1

#Set executionPolicy
Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope Process -Force

#Install or update Microsoft Graph Intune module
try {
    Write-Verbose -Message "Attempting to locate Microsoft.Graph.Intune module on local system"
    $GraphModule = Get-Module -Name "Microsoft.Graph.Intune" -ListAvailable -ErrorAction Stop -Verbose:$false
    if ($GraphModule -ne $null) {
        Write-Verbose -Message "Microsoft.Graph.Intune module detected, checking for latest version"
        $LatestModuleVersion = (Find-Module -Name Microsoft.Graph.Intune -ErrorAction Stop -Verbose:$false).Version
        if ($LatestModuleVersion -gt $GraphModule.Version) {
            Write-Verbose -Message "Latest version of Microsoft.Graph.Intune module is not installed, attempting to install: $($LatestModuleVersion.ToString())"
            $UpdateModuleInvocation = Update-Module -Name Microsoft.Graph.Intune -Scope AllUsers -Force -ErrorAction Stop -Confirm:$false -Verbose:$false
        }
    }
}
catch [System.Exception] {
    Write-Warning -Message "Unable to detect Microsoft.Graph.Intune module, attempting to install from online repository"
    try {
        # Install NuGet package provider
        $PackageProvider = Install-PackageProvider -Name NuGet -Force -Verbose:$false

        # Install Microsoft.Graph.Intune module
        Install-Module -Name Microsoft.Graph.Intune -Scope AllUsers -Force -ErrorAction Stop -Confirm:$false -Verbose:$false
        Write-Verbose -Message "Successfully installed Microsoft.Graph.Intune"
    }
    catch [System.Exception] {
        Write-Warning -Message "An error occurred while attempting to install Microsoft.Graph.Intune module. Error message: $($_.Exception.Message)"; break
    }
}


#Get device serial number
#$Serial = (Get-WmiObject -Class Win32_BIOS).SerialNumber

#Device Serial number, change this!
$Serial = "PC03SVKGXXX"


$Tenants = @("tenant1.onmicrosoft.com", "tenant2.onmicrosoft.com", "tenant3.onmicrosoft.com") #List here your tenants
$AppID = "10f9be91-4c9b-4427-aa71-143d18abafb5" #Change this to your own app ID
$AppSecret = "vJctTjssIeidhuzNQDkfWUIF/Pe+ae+adfafafafaf" #Change this to your own App Secret

foreach ($Tenant in $Tenants) {

    Write-Host "checking from tenant : $Tenant" -ForegroundColor Yellow
    
    #Update Intune Graph Schema to beta, because Autopilot graph is in beta Schema, update    
    Update-MSGraphEnvironment -SchemaVersion "beta" -AppId "$AppID" -AuthUrl "https://login.microsoftonline.com/$Tenant" -Quiet

    #Connect to Graph with App Secret
    Connect-MSGraph -ClientSecret "$AppSecret" -Quiet

    #URL for query autopilot device, always use filter, this moment only support contains as filter
    $url = "https://graph.microsoft.com/beta/deviceManagement/windowsAutopilotDeviceIdentities?`$filter=contains(serialNumber,'$Serial')"
    $AutopilotDevice = Invoke-MSGraphRequest -HttpMethod GET -Url $url -ErrorAction Continue
    if ($AutopilotDevice.'@odata.count' -eq "1")
    {
        write-host "found device serial $Serial in tenant $Tenant" -ForegroundColor Green
    }
}