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I have another 4K UHD disc that is unreadable. MakerMKV displays the following information: "The volume key for the DVD/Blu-ray is unknown - the video cannot be decrypted. Opening the disc failed." Please decrypt it once, or do I need to add another file to the folder?

I believe this disk was ...

I have another 4K UHD disc that is unreadable. MakerMKV displays the following information: "The volume key for the DVD/Blu-ray is unknown - the video cannot be decrypted. Opening the disc failed." Please decrypt it once, or do I need to add another file to the folder?

OS-Gerätename: E:
Aktuelles ...

Disk-Informationen
Label: SCARLET
Timestamp: 2026-03-26 13:02:05
Protection: AACS2.0/C v82
Data capacity: 72.42 Gb
Disk-Typ: BD-ROM UHD
Number of layers: 3
Bus encryption markings: 80

The latest KEYDB.cfg file already contains this disk. Have you tried downloading this file, copying it into ...

Hello,

I wanted to rip the movie Scarlet in 4K UHD, but it won't open in MKVmaker.

Drive information
OS-Device name: E:
Current profile: BD-ROM
Produzent: HL-DT-ST
Produkt: BD-RE BU40N
Revision: 1.03
Serial number: MOFP7J83721
Firmware-Date: 2118-10-24 19:34
Bus encryption markings: 17
Highest ...