Function Test-UserCredentials {
Param($username, $password)
Add-Type -AssemblyName System.DirectoryServices.AccountManagement
$ct = [System.DirectoryServices.AccountManagement.ContextType]::Machine, $env:computername
$opt = [System.DirectoryServices.AccountManagement.ContextOptions]::SimpleBind
$pc = New-Object System.DirectoryServices.AccountManagement.PrincipalContext -ArgumentList $ct
$Result = $pc.ValidateCredentials($username, $password).ToString()
$Result
}
Test-UserCredentials -username DOMAIN\USER -password (Read-Host)