Test windows user credentials

testUserCredentials.ps1

# 
# Returns True if Password matches, False otherwise
#
Function Test-UserCredential { 
    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-UserCredential -username SvcAc_Workflows -password Password