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MakeMKV v1.18.3 win(x64-release) started
Debug logging enabled, log will be saved as C:\Users\[redacted].txt
Using LibreDrive mode (v06.3 id=7FA2657C7667)
Using direct disc access mode
Loaded content hash table, will verify integrity of M2TS files.
DEBUG: Code 0 at 3FirBS;l\AtCiaA}:121268443
Saved AACS dump file as C:[redacted]/.MakeMKV/MKB20_v82_Grapes_of_Death_UHD_0A0D.tgz
The volume key is unknown for this disc - video can't be decrypted
DEBUG: Code 0 at [~^tn^s^5yv"y#^.:213132721
DEBUG: Code 0 at [~^tn^s^5yv"y#^.:213131341
Failed to open disc

tomatosynth wrote: Mon May 11, 2026 10:20 pm Saved AACS dump file as C:[redacted]/.MakeMKV/MKB20_v82_Grapes_of_Death_UHD_0A0D.tgz

Have you tried downloading the latest KEYDB.cfg file, copying it into MakeMKV's data directory (i.e. where MAkeMKV also writes its TGZ dump files) and restarting MakeMKV?