First thing you need to do is go to your activation software. (factory talk activation manager). Next you need to find the right serial #. Click on rehost activation, select the activation for RSLogix 500. It will take you through a series of steps. Follow each step carefully. After that go to rockwells web site and find rehost activation. Follow the steps. Write down all numbers that are given. Then stay on the same web site and push get activation. Make sure your dongle is plugged in to your computer and then select download activation to dongle.