# Список компов
$computerNameList = Get-ADComputer -Filter '(samAccountName -like "RND*")' -Properties @('DNSHostName') |
    ForEach-Object { return $_.DNSHostName } |
    Sort-Object -Descending


# Обработка компов
$count_max = $computerNameList.Count
$count_cur = 0
$resultList = @()   
ForEach ($computerName in $computerNameList) 
{
    $count_cur++
    Write-Host "$($count_cur) of $($count_max) : $($computerName)"
    $computerStatus = '<Unknown>'
    if ( -not (Test-Connection -ComputerName $computerName -Count 2 -Quiet) )
    {
        $computerStatus = 'Unavailable'
    }
    else
    {
        try
        {
            $products = $null
            $products = @( Get-WmiObject -ComputerName $computerName -Class 'Win32_Product' -Filter "NAME LIKE 'ESET Management Agent%'" -ErrorAction Stop )
            if ($products.Count -ne 0)
            {
                $computerStatus = 'Installed'
            }
            else
            {
                $computerStatus = 'Not_installed'
            }
        }
        catch
        {
            $computerStatus = 'Error_connecting'
        }
    }

    $resultObject = $null
    $resultObject = New-Object -TypeName 'PSObject' -Property @{
        'ComputerName' = $computerName
        'Status' = $computerStatus
        }
    $resultList += @($resultObject)
}

# Выгрузка результатов
    $resultList |
        Where-Object { $_.Status -eq 'Not_installed' } |
        Export-Csv -LiteralPath 'C:\2\result.csv' -NoTypeInformation -Delimiter ([System.Char]0x09) -Encoding UTF32

@{
    'ProductList' = @( Get-WmiObject -Class 'Win32_Product' | Select-Object @('Name', 'Vendor', 'Version', 'Caption', 'IdentifyingNumber'))
    'ComputerName'  = $env:COMPUTERNAME
    'DateTime'      = [DateTime]::UtcNow
} | Export-Clixml -LiteralPath "\\server.domain.local\dataCollector\computer\Win32_Product.$([System.Guid]::NewGuid().ToString()).dat" -Depth 5

$computerDataList = Get-ChildItem -LiteralPath '\\server.domain.local\share\computer\' -Filter 'Win32_Product.*.dat' | ForEach-Object { return Import-Clixml -LiteralPath $_.FullName }
$computerDataList | 
    Where-Object { $_.ComputerName -like 'RNG*' } |
    Where-Object { @($_.ProductList | Where-Object { $_.Caption -like 'Eset*' }).Count -eq 0 } |
    Export-Csv -LiteralPath 'C:\2\Results.csv'  -NoTypeInformation -Delimiter ([System.Char]0x09) -Encoding UTF32