Right-click on the Rhino5LicenseReset.exe and select Run as administrator.
Run Rhino 5.
Use one of the options below: a) If you have a Rhino 5 license and would like to install the license on this computer, click Enter a License and enter your license. b) If you have a Rhino 5 license and the license is installed on the Zoo license server, select Use a Zoo and set the Zoo server name/IP. c) If you don't have a Rhino 5 license and you are evaluating Rhino 5, click Evaluate.