our external USB device probably does not handle some OS disk functions properly. In this case, copy the installation files to a temporary folder on your hard disk and retry the installation from this drive. You can also use the option "Install Now" from your Autodesk Account.
An alternative option (for advanced users) is adding an option to the SETUP.INI file (on your USB media) via Notepad. To the section [SETUP] add a line with the parameter USE_REMOVABLE_DRIVE=YES - i.e: