1. 到"開始" -> "控制台"
    Start Menu

     

  2. 點選"程式集"
    Control Panel Main

  3. 點選 "開啟或關閉Windows功能"
    Control Panel Programs
  4. 點選 "Microsoft .NET Framework 3.5.1"
    Turn Windows features on or off
  5. "Microsoft .NET Framework 3.5.1核取方塊填滿或打勾
    Turn Windows features on or off
  6. 點選"確定"
    Turn Windows features on or off click OK
  7. 等待系統作業完成