Hi @Greg - Just trying to clarify, are you referring to the installer downloading the newest version of .NET?
The reason it takes so long is because .NET is really big. I haven't heard about not being able to move it off screen, and I'm not sure why it would take 4 hours, that seems unusual. If you want to give us more detail in a ticket by emailing support@repairtechsolutions.com, we can look into improving this.