Toolbox is intended to be installed and activated on a single system. Toolbox is not designed to be installed on multiple systems using a single license or to be installed and activated on multiple different systems in a short amount of time.
If you are interested in running diagnostics and troubleshooting multiple systems at a time please take a look at our product offerings such as Service Center or reach out to our sales team.
Note: We understand that users often upgrade or replace their systems. As such, if you have replaced or upgraded your system and are having issues with activating Toolbox, please open a support ticket for assistance with activation.