All the machines I use for ripping in my house have a Windows 8 Pro license so that I can use remote desktop to perform tasks on them without having to sit down in front of them. For some reason, with DVDFab I'm unable to read a disk when viewing the desktop from a remote session, DVDfab sees the DVD/BD drive but will read the disk. With other ripping tools I have no problem using remote desktop so it's something unique to DVDfab.