I've been using the Windows mounting (sounds wrong) for a long time I don't remember when they added it to Windows Vista or 8 maybe but it's been really nice for work stuff. I used to install VCD all the time way back when there were more CDs and ISOs and I needed to mount them even more than I do now. If the Scanner can't work without it, maybe it can check to see if it's there? I install tons of stuff on VMs, servers, workstations, laptops and so on and I just mount the ISO and go. AnyDVD is doing something more specialized or whatever but it's not the norm for me not by a very very long shot. Everything else I do with ISOs works fine mounting with Windows and I don't have to remember if I've installed something first. That's a big deal for me I'll never remember anyway.Virtual CloneDrive understands what it's mounting. Windows ISO doesn't. AnyDVD can't discern the type of disc that's loaded from Windows ISO mounting, so when you say "everything else works" that's only if they don't care what disc type it is. When looking at the protection, we do care.