When I try to install the migration tool for being able to migrate on-prem shared files to Sharepoint Online, it asks for my M364 user name and password, and then comes up and says install failed. I haven't used this tool before, so it is the latest version of the tool, though it hasn't actually tried to install anything.
I am the global admin for the M365 account, so am also the Sharepoint Admin. I am also the global domain admin on the server, though it hasn't got that far yet. I also have admin rights on my computer. The error isn't to helpeful, and the website just says to make sure you have the latest version of the program.

