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 by setting the TDWALLET_INTERACTIVE_INSTALL environment variable to 1 before installing Teradata Tools and Utilities. If the environment variable has been set to 1, you will be prompted to choose whether you want wallet data to be deleted during uninstallation.