www.makemkv.com

"The volume key is unknown for this disc - video can't be decrypted
Failed to open disc"

Has anyone else seen the same? Any ideas to update/work around?

Thank you.

Bluray or UHD disk? "Volume key unknown" is rare on non-UHD disks, unless you were trying to open an ISO of a BD.

If it's a UHD, the UHD FAQ covers this.

Thanks for the quick response. I tried both ways, direct from disc and creating an ISO of it (on Mac). It is a regular Blu-Ray as far as I know ~33 GB

Will try on PC next time I have one booted.

Thanks again.