Can I Uninstall a Maintenance Release?

Because of the dependencies between SAS products, you cannot uninstall a maintenance. However, when applying a maintenance release, SAS automatically backs up any files that are modified in the SAS installation directory. It does not back up any changes that you made to the SAS configuration directory.
Therefore, before installing a maintenance release, it is recommended that you back up all of the files in your SAS deployment. If you need to restore a previous deployment of SAS, it is recommended that you use these backup copies.
For more information, see Creating and Removing Backup Files.