The Non-Commercial RenderMan (NCR) is provided to artists wanting to experiment with or learn RenderMan in a bridge application.
These licenses are timed to expire every 120 days and can be renewed once the license expires.
To renew your license, visit the renewal page and complete the survey as directed by the link in your LicenseApp.
Be sure you are logged into the forums before updating the license, this is how the system knows who you are and your available license options.
After completing the survey, you can re-open the licensing application (as an Administrator or it cannot write the new license) in your bridge product to install the new license or alternatively you can re-run the installer and upgrade to the latest version if you have not already with user permissions.