If you have received a license file for use with your computer (node-locked), you can verify your license as follows. Open up a windows command shell and type:
> echo %RTDYNAMICS_LICENSE_FILE%
if you have correctly defined the environment variable, this should print the path your license, e.g. c:\RTDynamics\my-license-file.lix
If the path is correctly printed, you can check if the file is really at the given location by typing:
> more %RTDYNAMICS_LICENSE_FILE%
You should see the content of the license file. If not the environment variable is not pointing to the correct file location.