Go to the Microsoft Windows Script update page for a download that will correct the Runtime Error 429.
Click "Download." There will be a slight pause, then a new window will appear which asks if you want to save the file to the computer. Select "Save File." The update will now download to the computer.
Double-click the downloaded files icon. This will open the Microsoft installation wizard.
Follow the steps in the installation wizard to complete the setup. Once the installation is finished, there should be no more Runtime 429 errors.