1. If you are running a single user RunTime, follow the instructions for Uninstallation from the Server.
2. Delete the NIAKSER.DAT if a local copy was made. Optionally remove settings for the NIAKWA_RUNTIME environment variable.
3. In the Control Panel | Add/Remove Programs dialog, select and remove "NPL". Choose the "Remove" option. If after removing it, "NPL" is no longer shown in that dialog, uninstallation has succeeded.