www.makemkv.com

Thank you Billy! The drive was shipped promptly after the payment had processed and it arrived quickly. Tested it with a 4K Blu-Ray of Everything Everywhere All at Once and it works perfectly!

I am also having an issue with MKB20_v77_Barbie_5BD50 not having a known volume key, so I emailed the dump file. Anyone having success with this particular disc?

EDIT: Something on my network was blocking the automatic SDF downloading. I installed a VPN and had no further trouble ripping this disk.