Keydbcfg Makemkv Jun 2026

Blu-ray keys are tied to specific disc pressings. A key for a US retail version of a movie may not decrypt a UK retail version or a boutique label re-release of the exact same movie.

The file acts as a local decryption database that enables software to bypass AACS protection on Blu-ray and 4K Ultra HD (UHD) discs. While MakeMKV primarily functions using its own automated cloud-based "hashed keys" mechanism, integrating a manual keydb.cfg file serves as a crucial workaround when your ripping machine is offline, the primary servers experience downtime, or a new disc remains unsupported by official channels.

Double-check that it is in the aacs folder within the roaming (Windows) or .config (Linux) directory.

The file is a community-driven database containing these VUKs. By feeding this file to MakeMKV, you can decrypt, rip, and back up your discs without waiting for official software updates.

If you have tried to rip a 4K UHD Blu-ray recently and met a "disk not decrypted" error, you aren't alone. Even with a "friendly" flashed drive, MakeMKV often needs a little extra help to unlock the latest movies. That help comes in the form of a tiny but powerful file: 🔍 What is KeyDB.cfg? keydbcfg makemkv

This is also the same folder where MakeMKV writes its .tgz dump files when it fails to open a disc. If you see any files starting with MKB_vXX in that folder, you are in the right place.

The keydb.cfg file is a plain-text configuration file containing a crowd-sourced database of known VUKs (Volume Unique Keys) and Unit Keys for thousands of Blu-ray and UHD discs.

At its core, keydb.cfg is a community-driven database file containing decryption keys (Volume Unique Keys or VUKs) for thousands of Blu-ray and 4K UHD discs. It serves as a "fall-back" database that can be used when MakeMKV or other playback software like VLC cannot automatically retrieve the necessary keys. To ensure compatibility, the file is often renamed to uppercase ( KEYDB.cfg ).

: If MakeMKV's central servers are down, or if you are working on an air-gapped machine, having a local KEYDB.cfg can sometimes serve as a manual fallback for decryption keys. Blu-ray keys are tied to specific disc pressings

MakeMKV is incredibly smart and has its own built-in methods for calculating and decrypting keys. It also utilizes an automated online database look-up system. However, there are two main scenarios where a local keydb.cfg file becomes mandatory: 1. 4K UHD Blu-ray Decryption

Because new discs are released weekly, your KEYDB.cfg file needs regular updates. Need help understanding key extraction - MakeMKV Forum

r = redis.Redis(host='localhost', port=6379, decode_responses=True)

: For 4K UHD discs, keydb.cfg is particularly useful if you have a "friendly" drive and want to rip a brand-new title before the developer adds it. Where to Download KeyDB.cfg While MakeMKV primarily functions using its own automated

Copy the downloaded keydb.cfg file and paste it directly into this .MakeMKV folder.

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If you are seeing "The volume key is unknown" errors in MakeMKV even after trying to use a KEYDB.cfg file, consider these steps:

The official beta keys are posted on the in the "Announcements" section. The thread is usually titled "MakeMKV is free while in beta" .