The script will receive a path to a text file containing one GUID per line, loop over each line and search for the user info (Full Name) then generate a CSV file with the user info

GetLDAPUserInfo.ps1

param(
    [Parameter(Mandatory=$true)]
    $filePath
)

$accountsFilter= ""

Get-Content -Path $filePath | ForEach-Object {
    if($_.Trim()){
        $accountsFilter += "(sAMAccountName=$_)"
    }
}

$resultFile = Join-Path (Split-Path $filePath -Parent) "$([io.path]::GetFileNameWithoutExtension($filePath))_Completed.csv"

$strDomain = [System.DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain()
$strRoot = $strDomain.GetDirectoryEntry()

$adoConnection = New-Object -comObject "ADODB.Connection"
$adoCommand = New-Object -comObject "ADODB.Command"
$adoConnection.Open("Provider=ADsDSOObject;")
$adoCommand.ActiveConnection = $adoConnection
$adoCommand.Properties.Item("Page Size") = 100
$adoCommand.Properties.Item("Timeout") = 30
$adoCommand.Properties.Item("Cache Results") = $False

$strBase = $strRoot.distinguishedName
$strAttributes = "sAMAccountName,displayname"
$strScope = "subtree"

$strFilter = "(&(objectCategory=person)(|$accountsFilter))"
$strQuery = "<LDAP://$strBase>;$strFilter;$strAttributes;$strScope"
$adoCommand.CommandText = $strQuery
$adoRecordset = $adoCommand.Execute()

$result = @()

Do
{

    $object = New-Object -TypeName Object
    $object | Add-Member -MemberType NoteProperty -Name Guid -Value ($adoRecordset.Fields.Item("sAMAccountName") | Select-Object -ExpandProperty Value) -PassThru |
              Add-Member -MemberType NoteProperty -Name FullName -Value ($adoRecordset.Fields.Item("displayname") | Select-Object -ExpandProperty Value)
    
    $result += $object   
    
    $adoRecordset.MoveNext()
} Until ($adoRecordset.EOF)

$result | Export-Csv -Path $resultFile -NoTypeInformation

$adoRecordset.Close()
$adoConnection.Close()