Fix: This Blu-ray Disc Needs a Library for AACS Decoding

Windows Troubleshooting
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Originally published at: Fix: This Blu-ray Disc Needs a Library for AACS Decoding

Some Windows users are getting the “This Blu-Ray Disc needs a library for AACS decoding” error when trying to play a Blu-ray disk via the VLC media player. The issue is not specific to a certain Windows version as it’s reported to occur on Windows 7, Windows 8 and Windows 10. Also, the error message…

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if you still get the same error, Install Java. it works now…but you need to check no menus or else vlc crAshes

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Check this:
http://fvonline-db.bplaced.net/

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Hy Guys
you need to reinstall your Java.
Go to: https://www.java.com/de/download/manual.jsp
Download the right version for your computer and system.

Enjoy and let me know.

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I’m having the same problem, so I opened the keydb file to see what’s in it and it appears to literally just be a list of key codes for every Blu Ray movie out there. The problem is, the latest version of this key database is from 2018 and a lot of movies have come out since then, including the one I’m trying to watch (Specifically Venom). So if you want to watch a movie that’s actually in this database, it’ll work. If your movie isn’t in this database, I guess we’re just screwed.

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Thanks. But I’m not going to use such an old version of VLC Player. But I found a better solution. I found a freeware program called “Xreveal” which is similar to AnyDVD HD. It makes so I can play Blu-ray discs on media player.

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Try it with the following version of VLC.

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I followed those instructions and still getting the same error message. VLC 3.0.8 x64 & Windows 10 x64

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Yea np, first of all, try to run them with a different media player to isolate the issue with either the software or the files. If they don’t work with another software it means that the files are corrupt.

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Check this guide out:

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Well, this didn’t work for me. The error said something about “no valid key found in aacs”, or something to that effect. This is frustrating. I had already closed that error window when I went to leave this comment, so when I went back into VLC to try and replicate the error message, it didn’t give me the same message; it just said there it couldn’t play the disc. The specific message it says now is “VLC is unable to open the MRL ‘dvd:///G:’. Check the log for details”. I hope someone sees this, and can help me.