We been running Fusion 360 for the last couple of years, unfortunately there is no quick fix then downloading the file (Fusion 360 Admin Install) manually from the link provided in the second post on this third. Someone mentioned that when they run the batch file after 100% extraction it disappears. It does disappear but it is still working in the background you just need to be patient and let it finish. It is incredibly slow to install. We use CMS (AB Tutor) and run the update batch file through command feature.