1. You probably use a more recent version of Windows. You should reinstall the game but instead of using the default install path you should install the game to a folder on your desktop or inside your user folder. In fact because of how all the pre-Robot Wants It All Hamumu games work you should just make a folder on your desktop or inside your user folder to install Hamumu games to.
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Try following the instructions on the page at https://www.cnet.com/how-to/always-run-a-program-in-administrator-mode-in-window...