Update-ADPassword.ps1

function Update-ADPassword
{
  param(
    [string]$Domain = $env:USERDOMAIN
  )

  try {
    Add-Type -AssemblyName System.DirectoryServices.AccountManagement
    $ctx = [System.DirectoryServices.AccountManagement.PrincipalContext]::new('Domain', $Domain)
    $acc = [System.DirectoryServices.AccountManagement.UserPrincipal]::FindByIdentity($ctx, ($currCred = Get-Credential -Message 'Input your current credentials').UserName)
    if($? -and @($acc.Count) -eq 1) {
      $acc.ChangePassword($currCred.GetNetworkCredential().Password, $(Get-Credential -UserName $currCred.UserName -Message "Input your new password").GetNetworkCredential().Password)
      Write-Host "Password successfully changed for $($currCred.UserName) in $Domain"
    }
    else {
      if(@($acc).Count){
        Write-Warning "No unambiguous account match found in $Domain"
      }
      else {
        Write-Warning "No user account found in $Domain"
      }
    }
  }
  catch {
    throw
    return
  }
  finally {
    Clear-Variable 'currCred' -PassThru |Remove-Variable
  }
}