Some users have experienced errors when registering their FORScan License Keys in their local computer. This happens even after they have successfully registered in the FORScan Forum and have fully installed the FORScan in the C:/Program Files or /User folders of their computer. Both of these locations in the computer require admin permissions in order to make changes in the hard drive.

So, to successfully register the FORScan Extended Licence, you need to do the following steps:

1. Uninstall FORScan.
2. Then re-install the FORScan by right-clicking and selecting "Run as Administrator".

 After this, you should be able to continue and finish the license registration process.