The script below will let you quickly validate whether given computers exist in Active Directory. Please keep both script and Computer.txt in the same location. Add the computer NetBIOS name in the text file, separated by a new line. The result will be saved in the Output.csv file in the script folder.
$File = "$PSScriptRoot\Computers.txt"
$LogFile = "$PSScriptRoot\Output.csv"
# Function to WriteLog File
Function WriteLog($Msg)
{
$Text = $Msg
Add-Content -Path $LogFile $text
Write-Host $Text
}
$ComputerList = Get-Content -Path $File
$TotalRecord = ($ComputerList).Count
foreach ($computer in $ComputerList){
$error.clear()
try{$ADComputer = Get-ADComputer $computer -Properties *}
catch{ WriteLog "$computer,Does not Exists in AD"}
if (!$error) { WriteLog "$computer,Computer exists in AD"}
}
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