If you are referring to a check for updates window, that can be cancelled. Installing vs 2017.02 should not have any other updates available right now. If you are referring to the last window of the installation before logging into your Trimble Ag account, then what ever the default shows would be okay. This does not mean it is installing several times and using more space on your computer. The new version should be trying to install right on top of the existing install Directory, such as C:\farmproj which is also the default install location. Hope this makes sense.