How to Download KEYDB.cfg and Fix VLC Blu-ray Playback If you’ve ever tried to play a Blu-ray disc on your computer using VLC Media Player, you’ve likely run into the dreaded "AACS decoding" error. Unlike DVDs, Blu-rays are heavily encrypted, and VLC doesn't come with the native keys to unlock them.
folder does not exist in these locations, you must create it manually before moving the file. Additionally, you may need to download the libaacs.dll (for Windows) or libaacs.dylib
Alternatively, many users visit the VLC Blu-ray Wiki to download both the database file and the necessary dynamic library ( libaacs.dll ). Step-by-Step Installation Guide