When you uninstall Teradata Tools and Utilities, by default the data associated with Teradata Wallet is retained (not deleted). You can choose to have wallet data deleted by the uninstallation process. You do this by setting the TDWALLET_INTERACTIVE_INSTALL environment variable to 1 before you install Teradata Tools and Utilities. If the environment variable has been set to 1, you will be prompted during installation of Teradata Tools and Utilities to choose whether you want wallet data to be deleted during uninstallation.