On Windows, we are able to use Chocolatey to install Toolbox. Execute the following command and then launch the app:

choco install jetbrainstoolbox

Our ultimate goal when installing the Toolbox was to install WebStorm. So, with the Toolbox open, either sign in if you have purchased any JetBrains products or skip the sign in if you just want to try them out. Next, find WebStorm in the products list and click the button to install it. Once the install has finished, you will be able to click a Launch button that will replace the Install button.