Exception calling "FindAll" with "0" argument(s) - Trusted Domains LDAP Search

My approach is to get the latest ModifyTimeStamp after scanning on all DC's. The scenario in my code is:

First, I scan on the PDC to get the distinguishedName values, and after that I scan on all DC's also to get distinguishedName values, if they are -eq to each other, it will print the ModifyTimeStamp which means all ModifyTimeStamp values on each DC's will be stored in an arraylist. The arraylist will print the maximum values then on. As the following:

$TrustedDomain = "test.com"
$context = new-object System.DirectoryServices.ActiveDirectory.DirectoryContext("domain",$TrustedDomain)
$D = [System.DirectoryServices.ActiveDirectory.Domain]::GetDomain($context)
$PDC = $D.PdcRoleOwner 
$ADSearch = New-Object System.DirectoryServices.DirectorySearcher 
$ADSearch.SearchRoot ="LDAP://$PDC"
$ADSearch.SearchScope = "subtree"
$ADSearch.PageSize = 100
$ADSearch.Filter = "(&(objectCategory=person)(objectClass=user))"
foreach($pro in $properies)
{
    $ADSearch.PropertiesToLoad.add($pro)| out-null
}
$userObjects = $ADSearch.FindAll()

$dnarr = New-Object System.Collections.ArrayList
Function modiScan{
    $Searcher = New-Object System.DirectoryServices.DirectorySearcher 
    $Searcher.PageSize = 100 
    $Searcher.SearchScope = "subtree" 
    $Searcher.Filter = "(&(objectCategory=person)(objectClass=user))"
    $Searcher.PropertiesToLoad.Add("distinguishedName")|Out-Null
    $Searcher.PropertiesToLoad.Add("modifyTimeStamp")|Out-Null
    forEach ($users In $userObjects) 
    { 

            $DN = $users.Properties.Item("distinguishedName")[0]
            $dnarr.add($DN)|Out-Null
    }
    #$dnarr
    foreach($dnn in $dnarr){
                $lastmd = New-Object System.Collections.ArrayList
                ForEach ($DC In $D.DomainControllers){

                    $Server = $DC.Name
                    $Base = "LDAP://$Server/"+$dnn
                    $Searcher.SearchRoot = $Base 
                    $Results2 = $Searcher.FindAll()
                    ForEach ($Result2 In $Results2) 
                    {                          
                        $DN2 = $Result2.Properties.Item("distinguishedName")[0]
                        if($DN2 -eq $dnn){
                            $modi = $Result2.Properties.Item("modifyTimeStamp")[0]
                            $lastmd.Add($modi)|Out-Null
                        } 
                    } 
                }
      $lastModi = ($lastmd |measure -max).maximum      
      if($lastModi -ne $null){   
            $lastModi = $lastModi.ToString("yyyy/MM/dd")               
        }
        else{
            $lastModi = "N/A"
        }


        $lastModi
   }
}
modiScan

The error I've got is:

Exception calling "FindAll" with "0" argument(s): "Unknown error (0x80005000)"
At C:\Users\Ender\trustedScan.ps1:40 char:21
+                     $Results2 = $Searcher.FindAll()
+                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : COMException

I have executed on current Domain it worked like a charm. But when I try to put a trusted domain, it throws me that error.