Naveed, License borrowing will not work unless it is enabled. When PTC sent you your license pack, you actually received 2 license files. One with borrowing enabled, one without. You must have installed the license file that did not have borrowing enabled. This is very common. Remember though, license borrowing only works for a maximum of 14 days (5 by default). If you need a longer period, you will have to use the licensing web tools to "de-install" 1 license from your set of 500. Then you will assign that single license to your laptop's Host ID. You will actually then receive a license file for the laptop and also, a license file that contains the remaining 499 licenses (for the server). If this does not make sense and you need more info, please email me, -. Thanks, Adam