www.makemkv.com

Thanks pyro.tokyo and Woodstock. I was using remote desktop, hence the problem. Looking back I think that this was the first time I tried it using RD. Both solutions worked:
Starting the exe with "run as administrator" AND

In the local Group Policy editor (run gpedit.msc), go into Computer ...

Hello,
I have a Windows 10 machine that gives the error "The program can't find any usable optical drives."
I have searched the forum to no avail for a solution. I am running version 1.14.5. I have ripped disks from this computer before. I have VLC installed and when I do a ctrl D the drive and DVD ...

Update:
I did some checking on the Vortexbox forum again(after switching drives) and found this post. Hopefully it will help others.

"Yes, look like they are using a new version of ffmpeg. This should resolve the problem.

Code:

rpm -e libswresample0 libswscale2 libpostproc52 ffmpeg libavfilter2 ...

Hello,
I am also having trouble with The Hobbit. I place the blu-ray in the drive and it will eject and reload every 10 seconds or so. I am using makemkv through a vortexbox.
FYI - I tried ripping "The Book Thief" a couple weeks ago and was unable to rip that disc also. I am using makemkv.i686 0:1.8 ...